TWI629829B - A waveguide transition structure for receiving satellite signals - Google Patents

Abstract

The present disclosure provides a waveguide conversion structure for receiving satellite signals, which can be implemented in a low noise downconverter. In an embodiment of the present disclosure, the low noise downconverter includes a first angular feed structure having at least one first waveguide extending along a first direction; and an outer casing having a second direction At least one second waveguide extending and in communication with the first waveguide; and a circuit board disposed within the housing. The second direction is substantially non-parallel to the first direction. The circuit board has a receiving leg configured to receive a microwave signal propagating in the second waveguide.

Description

Waveguide conversion structure for receiving satellite signals

The present disclosure relates to a waveguide conversion structure for receiving a satellite signal, and more particularly to a low noise downconverter having a waveguide conversion structure for receiving a satellite signal, comprising a housing having a waveguide, the waveguide being different from the outer casing The microwave signal is propagated in the direction of the upper horn feed horn.

Satellite connectivity requires equipment such as ground stations, low noise downconverters, transmission cables, and modulators/demodulators. The ground station receives a microwave signal from a satellite; the low noise down converter amplifies the received microwave signal and converts the amplified microwave signal into an intermediate frequency signal; and the transmission cable transmits the intermediate frequency signal to the modulation / demodulator.

Typically, the low noise downconverter can include a microwave circuit and an intermediate circuit electrically coupled to the microwave circuit. The microwave circuit receives the microwave signal, converts the microwave signal into an intermediate frequency signal, and transmits the intermediate frequency signal to the intermediate frequency circuit.

The above "previous technical" description is merely for providing background information, and does not recognize that the "previous technical" description above discloses the subject matter of the disclosure, and does not constitute the disclosure. The prior art, and any description of the "prior art" above, should not be part of this case.

Some embodiments of the present disclosure provide a low noise downconverter having a waveguide conversion structure for receiving satellite signals, comprising a housing having a waveguide that propagates microwaves in a direction different from a horn shaped feed on the housing signal.

In some embodiments of the present disclosure, a low noise downconverter having a waveguide conversion structure for receiving a satellite signal includes an horn shaped feed structure having at least one first waveguide extending along a first direction; An outer casing having at least one second waveguide extending along a second direction and in communication with the first waveguide, wherein the second direction is substantially non-parallel to the first direction; and a circuit board located at the Within the housing, wherein the circuit board has a receiving leg configured to receive a microwave signal propagating in the second waveguide.

In some embodiments of the present disclosure, an outdoor unit includes a dish antenna and a low noise downconverter at a focus of the dish antenna having a waveguide conversion structure for receiving satellite signals. The low noise downconverter includes a first angular feed structure having at least one first waveguide extending along a first direction, an outer casing having a second direction extending and communicating with the first waveguide Connecting at least a second waveguide, wherein the second direction is substantially non-parallel to the first direction; and a circuit board located within the housing, wherein the circuit board has a receiving leg configured to receive A microwave signal propagating in the second waveguide.

In some embodiments of the present disclosure, the housing includes: a base, It has an upper surface, a bottom surface, and a recess recessed from the bottom surface to the upper surface; and a metal plate substantially covering the recess to implement the second waveguide.

In some embodiments of the present disclosure, the metal plate has an opening that exposes at least a portion of the second waveguide, the circuit board has a slot portion corresponding to the opening, and the receiving leg extends to the slot portion in.

In some embodiments of the present disclosure, the housing includes a first conversion structure configured to direct the microwave signal from the first waveguide to the second waveguide.

In some embodiments of the present disclosure, the first conversion structure has a multi-level object.

In some embodiments of the present disclosure, the first conversion structure has a first portion in the horn shaped feed structure and a second portion disposed in the recess.

In some embodiments of the present disclosure, the housing includes a second conversion structure configured to direct the microwave signal from the second waveguide to the circuit board.

In some embodiments of the present disclosure, the second conversion structure has a multi-level object.

In some embodiments of the present disclosure, the housing includes a base having an upper surface, a bottom surface, and a recess recessed from the bottom surface toward the upper surface; wherein the circuit board includes a metal layer, The metal layer covers at least a portion of the recess to achieve at least a portion of the second waveguide.

In some embodiments of the present disclosure, the housing includes a metal plate covering at least a portion of the recess to implement at least a portion of the second waveguide to And the metal plate and the metal layer substantially cover the recess.

In some embodiments of the present disclosure, the housing includes: a base having an upper surface, a bottom surface, and a first recess recessed from the bottom surface toward the upper surface; and a metal portion, the essence thereof The first recess is covered to implement the second waveguide, wherein the metal portion has a second recess that is in communication with the first recess.

In some embodiments of the present disclosure, the circuit board is located between the base and the metal portion.

In some embodiments of the present disclosure, the metal portion has a first bevel configured to direct the microwave signal from the first waveguide to the second waveguide.

In some embodiments of the present disclosure, the metal portion has a second bevel configured to direct the microwave signal from the second waveguide to the circuit board.

In some embodiments of the present disclosure, the receiving foot extends into the second waveguide.

In some embodiments of the present disclosure, the second waveguide has a first end that is in communication with the first waveguide, and the location of the circuit board does not substantially overlap the first end.

In some embodiments of the present disclosure, the second waveguide has a second end that is in communication with the circuit board, and the circuit board substantially overlaps the second end.

In some embodiments of the present disclosure, the first waveguide has a bottom that is in communication with the second waveguide, and the housing includes a first recess extending from a first side of the bottom, and a first portion from the bottom a second recess extending from the second side.

In some embodiments of the present disclosure, the horn shaped electrical structure package A first horn feed and a second horn feed parallel to the first horn feed are disposed.

In the low noise downconverter of the comparative example, the horn shaped feeds need to be separated by a certain distance and separate electronic components are used to implement the microwave receiving system. The low noise downconverter of this comparative example uses a circuit board having a large layout size (space) to conform to the position of the separated horn feeder and the position of the separated electronic components. In this prior art, it is known that a circuit board implementing a microwave receiving system is very expensive, and thus the overall cost of the low noise downconverter of this comparative example is also very expensive.

As the industry trend realizes the function of several separate electronic components in a single integrated circuit device, the low noise downconverter having the waveguide conversion structure for receiving satellite signals disclosed herein uses a waveguide in the outer casing to form a horn shaped feeder. Direct the microwave signal to the input port of the board (such as the input 低 of the low noise amplifier). Therefore, the low noise down-converter having the waveguide conversion structure for receiving satellite signals of the present disclosure can use an integrated circuit device for realizing the functions of a plurality of separate electronic components on the circuit board, thereby enabling the technique of the present disclosure to reduce the circuit. The layout size of the board significantly reduces the cost of the low noise downconverter.

The technical features and advantages of the present disclosure have been broadly described above, and the detailed description of the present disclosure will be better understood. Other technical features and advantages of the subject matter of the claims of the present disclosure will be described below. It will be appreciated by those skilled in the art that the present invention may be practiced with the same or equivalents. Those with ordinary knowledge in the technical field of the disclosure also It should be understood that such equivalent constructions are not limited to the spirit and scope of the disclosure as defined by the appended claims.

10‧‧‧Low noise downconverter

10A‧‧‧Low noise downconverter

10B‧‧‧Low noise downconverter

11‧‧‧Shell

11A‧‧‧Shell

11B‧‧‧ Shell

15‧‧‧Metal sheet

15A‧‧‧Metal sheet

17‧‧‧Circuit board

17A‧‧‧Circuit board

19‧‧‧ Spacer

19B‧‧‧Metal sheet

100‧‧‧Outdoor unit

101‧‧‧ dish antenna

102‧‧‧ satellite

111‧‧‧Base

111A‧‧‧ upper surface

111B‧‧‧ bottom surface

113A‧‧‧ recess

113B‧‧‧ recess

115A‧‧‧Band

115B‧‧‧Band

117A‧‧‧ recess

117B‧‧‧ recess

119A‧‧‧Band

119B‧‧‧Band

Angled feeder structure 120‧‧

121‧‧‧The first angle feeder

Angular recess 1211‧‧

1213‧‧‧Band

1215‧‧‧ bottom

123‧‧‧2nd angle feeder

Angular recess 1231‧‧

1233‧‧‧Band

1235‧‧‧ bottom

130‧‧‧ wall

131‧‧‧ housing recess

141‧‧‧ first conversion structure

1411‧‧‧ boards

1413‧‧‧Multi-level objects

142‧‧‧Second conversion structure

143‧‧‧ first conversion structure

1431‧‧‧plate

1433‧‧‧Multi-level objects

144‧‧‧Second conversion structure

151‧‧‧ openings

153‧‧‧ openings

155‧‧‧ recess

171‧‧‧ slot department

172‧‧‧ Receiving feet

172A‧‧‧ Receiving feet

172B‧‧‧ Receiving feet

173‧‧‧ slot department

175‧‧‧metal layer

190‧‧‧Second recess

193‧‧‧ first slope

195‧‧‧second slope

210‧‧‧First recess

The disclosure of the present application is more fully understood by reference to the appended claims.

1 is a three-dimensional diagram illustrating an outdoor unit of some embodiments of the present disclosure.

2 and 3 are exploded views illustrating the low noise downconverter of some embodiments of the present disclosure from the top and bottom surfaces, respectively.

Figure 4 is a cross-sectional full view showing the outer casing of Figure 2 of some embodiments of the present disclosure along one direction.

Figure 5 is a cross-sectional full view illustrating the outer casing of Figure 2 of some embodiments of the present disclosure along the other direction.

6 and 7 are full views, illustrating waveguides corresponding to the first horn feed horn of some embodiments of the present disclosure.

8 and 9 are full views illustrating the waveguides of the second horn feed horn of some embodiments of the present disclosure.

Figure 10 is a graph showing the frequency response of a waveguide between a first horn feeder and a circuit board of some embodiments.

Figure 11 is a schematic diagram illustrating a comparison circuit board.

Figure 12 is a schematic illustration of a housing and circuit board of some embodiments of the present disclosure.

Figure 13 and Figure 14 are exploded views, illustrating the disclosure from the top and bottom surfaces respectively. The low noise downconverter of the embodiment.

Fig. 15 and Fig. 16 are exploded views showing low noise downconverters from the top and bottom surfaces, respectively.

The following description of the disclosure is accompanied by the accompanying drawings which are incorporated in and constitute a Further, the following embodiments may appropriately integrate the following embodiments to complete another embodiment.

The "embodiment", "embodiment", "exemplary embodiment", "other embodiment", "another embodiment" and the like means that the embodiments described in the present disclosure may include specific features, structures or characteristics. Not every embodiment must include that particular feature, structure, or characteristic. Furthermore, the repeated use of the phrase "in the embodiment" does not necessarily mean the same embodiment, but may be the same embodiment.

The present disclosure relates to a low noise downconverter having a waveguide conversion structure for receiving satellite signals, comprising a housing having a waveguide along a horn different from a feed horn on the housing The direction propagates the microwave signal. In order that the disclosure is fully understood, the following description provides detailed steps and structures. It is apparent that the implementation of the present disclosure does not limit the specific details known to those skilled in the art. In addition, the known structures and steps are not described in detail to avoid unnecessarily limiting the disclosure. Preferred embodiments of the present disclosure are detailed below. However, the disclosure may be embodied in other embodiments in addition to the detailed description. The scope of the disclosure is not limited to the details of the description, but is defined by the scope of the patent application.

Figure 1 is a three-dimensional schematic diagram illustrating an outdoor embodiment of the present disclosure. Unit 100. In some embodiments of the present disclosure, the outdoor unit 100 includes a dish antenna 104 to receive microwave signals from the satellite 102, and a low noise block located at the focus of the dish 101 (low noise block) (LNB) down-converter 10 having a waveguide conversion structure for receiving satellite signals. In some embodiments of the present disclosure, the LNB downconverter 10 receives the microwave signal from the satellite antenna 12, converts the received microwave signal to an intermediate frequency (IF) signal, and amplifies the IF signal to an acceptable level of output. Furthermore, the LNB downconverter 10 removes unwanted components and noise from the received satellite signals.

2 and 3 are exploded views, respectively illustrating the LNB downconverter 10 of some embodiments of the present disclosure from the top and bottom surfaces; FIG. 4 is a cross-sectional full view, illustrating a certain embodiment of the present disclosure along a direction The outer casing 11; and the fifth drawing are a cross-sectional full view, illustrating the outer casing 11 of some embodiments of the present disclosure along the other direction.

In some embodiments of the present disclosure, the LNB downconverter 10 includes a housing 11, a metal plate 15, and a circuit board 17. In some embodiments of the present disclosure, the outer casing 11 includes a base 111 having an upper surface 111A, a bottom surface 111B, and a recess 113A recessed in a direction from the bottom surface 111B to the upper surface 111A; a number protruding from the upper surface 111A a feed horn structure 120; a wall portion 130 protruding from the bottom surface 111B, the wall portion 130 forming a housing recess 131 below the bottom surface 111B; and a first transforming structure at the first end of the recess 113A And a second transforming structure 142 at a second end of the recess 113A.

Referring to Figure 2, in some embodiments of the present disclosure, the horn shaped feed The device structure 120 can implement a plurality of horn shaped feeds to receive microwave signals from a plurality of satellites; for example, two first horn shaped feeds 121 and a second parallel arrangement between the two first horn shaped feeds 121 A second angle feed 123. In some embodiments, the horn feeder structure 120 can implement a single horn feeder to receive microwave signals from a single satellite. In some embodiments of the present disclosure, the horn shaped feed structure 120 can implement two horn shaped feeds to receive microwave signals from different satellites; for example, a first horn shaped feed 121 and a first horn shaped feed A second horn shaped feed 123 in a flat configuration.

Referring to FIG. 3, in some embodiments of the present disclosure, corresponding to the first horn-shaped feeder 121, the susceptor 111 includes a recess 113A and a recess 113B, wherein the recess 113A extends from the first side of the first conversion structure 141. And the recess 113B extends from the second side of the first conversion structure 141. In some embodiments of the present disclosure, the bottom portion of the first conversion structure 141 is substantially at the same level as the bottom surface 111B. In some embodiments of the present disclosure, the recess 113A extends from one side of the first conversion structure 141 to one of the second conversion structures 14, and the recess 113B extends from the other side of the first conversion structure to another second Conversion structure 142. In some embodiments of the present disclosure, the second conversion structure 142 has a multi-step object that extends from the bottom of the recess 117A (or recess 117B) to the bottom surface 11B.

Referring to FIG. 3, in some embodiments of the present disclosure, corresponding to the second horn-shaped feed 123, the susceptor 111 includes a recess 117A and a recess 117B, wherein the recess 117A extends from the first side of the first conversion structure 143, and The recess 117B extends from the second side of the first conversion structure 143. In some embodiments of the present disclosure, the first conversion structure The bottom of 143 is substantially the same level as the bottom surface 111B. In some embodiments of the present disclosure, the recess 117A extends from one side of the first conversion structure 143 to one of the second conversion structures 144, and the recess 117B extends from the other side of the first conversion structure 143 to another second Conversion structure 144. In some embodiments of the present disclosure, the second conversion structure 144 has a multi-step object that extends from the bottom of the recess 117A (or recess 117B) to the bottom surface 111B.

In some embodiments of the present disclosure, corresponding to the first horn feeder 121, the metal plate 15 substantially covers the recesses 113A, 113B to implement the waveguides 115A, 115B to propagate microwave signals, respectively. In some embodiments of the present disclosure, the metal plate 15 has an opening 151 that exposes at least a portion of the second conversion structure 142, and the opening 151 acts as a transmission port to propagate microwave signals between the waveguides 115A, 115B and the circuit board 17. In some embodiments of the present disclosure, the metal plate 15 covers the recess 113A to implement an E-plane waveguide to propagate microwave signals.

In some embodiments of the present disclosure, corresponding to the second horn feeder 123, the metal plate 15 substantially covers the recesses 117A, 117B, implementing the waveguides 119A, 119B to propagate microwave signals. In some embodiments of the present disclosure, the metal plate 15 has an opening 153 that exposes at least a portion of the second conversion structure 144, and the opening 153 serves as a transmission port for propagating microwave signals between the waveguides 119A, 119B and the circuit board 17. .

In some embodiments of the present disclosure, the circuit board 17 is located within the housing recess 131, wherein the circuit board 17 has a groove portion 171 corresponding to the opening 151, a groove portion 173 corresponding to the opening 153, and a groove portion 171 and groove extending a receiving leg 172 in portion 173, wherein receiving leg 172 is configured to receive propagation through waveguides 115A, 115B, 119A, The microwave signal in 119B and the received signal is passed to the input of an amplifier on circuit board 17. In some embodiments of the present disclosure, the outer casing 11 further includes a spacer 19 covering the circuit board 17 on the metal plate 15. In some embodiments of the present disclosure, the circuit board 17 is smaller than the metal plate 15. In some embodiments of the present disclosure, the receiving leg 172 can be implemented with a transmission line for the E-plane waveguide.

In some embodiments of the present disclosure, the horn-shaped feed structure 120 can be implemented by a single horn feeder, such as a first horn feeder 121 (or a second horn feeder 123), and correspondingly has a A conversion structure (in the outer casing 11), a pair of recesses (in the outer casing 11), a pair of second conversion structures (in the outer casing 11), and a pair of openings (in the circuit board 17). In some embodiments of the present disclosure, the horn shaped feed structure 120 is implemented as three horn shaped feeds (two first horn shaped feeds 121 and one second horn shaped feed 123) and has three pairs of recesses (in the outer casing 11), three pairs of second conversion structures (in the outer casing 11), and three pairs of openings in the circuit board 17.

In some embodiments of the present disclosure, the opening 17 of the metal sheet 15 is rectangular, and other shapes (e.g., semi-circular) may also be used to implement the opening 151. Similarly, in some embodiments of the present disclosure, the groove portion 171 of the circuit board 17 is rectangular, and other shapes (e.g., semi-circular) may be used to implement the groove portion 171.

Referring to FIG. 4, in some embodiments of the present disclosure, the first horn-shaped feedthrough 121 includes a horn-shaped recess 1211 through which the waveguide 1213 is communicated with the waveguide 115A implemented in the recess 113A via the first conversion structure 141. In some embodiments of the present disclosure, the first conversion structure 141 has a first corresponding to the first horn feeder 121 The portion and the second portion extend into the horn-shaped recess 1211 of the first horn feeder 121, and the second portion extends into the recesses 113A, 113B. In some embodiments of the present disclosure, the first conversion structure 141 has a plate member 1411 that extends into the horn-shaped recess 1211 of the first horn-shaped feedthrough 121, and a multi-step object 1413 that extends into the recesses 113A, 113B. Referring to FIG. 3, the second conversion structure 142 corresponding to the first horn feeder 121 has a multi-stage object at the end of the recess 113A. In some embodiments of the present disclosure, from the top of the panel 1411, the horn-shaped recess of the first horn-shaped feedthrough 121 is divided into two compartments, and the multi-stage object 1413 has two multi-step sections corresponding to two compartments. between.

Referring to FIG. 5, in some embodiments of the present disclosure, the second horn-shaped feedthrough 123 includes a horn-shaped recess 1231 through which the waveguide 1233 communicates with the waveguide 119A implemented in the recess 117A via the first conversion structure 143. In some embodiments of the present disclosure, corresponding to the second horn-shaped feed device 123, the first conversion structure 143 has a first portion and a second portion, and the first portion extends to the horn-shaped recess 1231 of the second horn-shaped feed device 123, The two portions extend into the recesses 117A, 117B. In some embodiments of the present disclosure, the first conversion structure 143 has a plate member 1431 that extends into the horn-shaped recess 1231 of the second horn-shaped feedthrough 123, and a multi-stage object 1433 that extends into the recesses 117A, 117B. Referring to FIG. 3, the second conversion structure 144 corresponds to the second horn feeder 123 having a multi-stage object at the end of the recess 117A. In some embodiments of the present disclosure, from the top of the plate member 1431, the horn-shaped recess of the second horn-shaped feedthrough 123 is divided into two compartments, and the multi-stage object 1433 has two multi-step portions corresponding to two Compartment.

6 and 7 are full views, illustrating waveguides 115A, 115B corresponding to the first horn feeder 121 of some embodiments of the present disclosure. As shown in Figures 6 and 7, in some embodiments of the present disclosure, the waveguide 1213 implemented in the horn shaped recess 1211 has a bottom portion 1215 that is in communication with the waveguide 115A implemented in the recess 113A; The conversion structure 141 is attached to the bottom portion 1215 of the horn-shaped recess 1211 of the first horn feeder 121; the recess 113A and the waveguide 115A extend from the first side of the bottom portion 1235 and are located on one side of the first conversion structure 141 and the second conversion structure Between one of the 142s; and the recess 113B and the waveguide 115B extend from the second side of the bottom portion 1235 and are located between the other side of the first conversion structure 141 and the other second conversion structure 142.

In some embodiments of the present disclosure, the first conversion structure 141 has a first multi-step portion facing the recess 113A and a second multi-step portion facing the recess 113B. In some embodiments of the present disclosure, the waveguide 1213 implemented in the horn shaped recess 1211 is substantially non-parallel to the waveguides 115A, 115B implemented by the recesses 113A, 113B, such as the waveguides 115A, 115B implemented perpendicular to the recesses 113A, 113B. . In some embodiments of the present disclosure, the waveguide 1213 implemented in the horn shaped recess 1211 is substantially oblique to the waveguides 115A, 115B implemented in the recesses 113A, 113B, and the angle of inclination is dependent on the position of the satellite transmitting the microwave signal.

8 and 9 are full views, illustrating waveguides 119A, 119B corresponding to the second horn shaped feed 123 of some embodiments of the present disclosure. As shown in FIGS. 8 and 9, in some embodiments of the present disclosure, the waveguide 1233 implemented in the horn-shaped recess 1231 has a bottom portion 1235 that is coupled to the wave implemented in the recess 113A. The first conversion structure 143 is attached to the bottom portion 1235 of the horn-shaped recess 1231 of the second horn-shaped feedthrough 123; the recess 117A and the waveguide 119A extend from the first side of the bottom portion 1235 and are located at the first conversion structure 143. Between one side and one of the second conversion structures 144; and the recess 117B and the waveguide 119B extend from the second side of the bottom 1235 and are located on the other side of the first conversion structure 143 and the other second conversion structure 144 between.

In some embodiments of the present disclosure, the first conversion structure 143 has a first multi-step portion facing the recess 117A and a second multi-step portion facing the recess 117B. In some embodiments of the present disclosure, the waveguide 1233 implemented in the horn shaped recess 1231 is substantially non-parallel to the waveguides 119A, 119B implemented by the recesses 117A, 117B, such as the waveguides 119A, 119B implemented perpendicular to the recesses 117A, 117B. . In some embodiments of the present disclosure, the waveguide 1233 implemented in the horn shaped recess 1231 is substantially oblique to the waveguides 119A, 119B implemented in the recesses 117A, 117B, and the angle of inclination is dependent on the position of the satellite transmitting the microwave signal.

Figure 10 is a diagram showing the frequency response of the waveguide 115A between the first horn feeder 121 and the circuit board 17 of some embodiments. In some embodiments of the present disclosure, the waveguide (115A, 115B, 119A, 119B) between the horn shaped feed (121, 123) and the input of the circuit board 17 acts as a filter, such as a bandpass filter, high pass filtering , low pass filter, or band stop filter.

As shown in FIG. 10, in some embodiments of the present disclosure, the insertion loss (S ₂₁ ) is between -0.0037 and -0.0011 dB in the frequency range of 12.2 GHz to 12.7 GHz, and the reflection loss ( The return loss, S ₁₁ ) is between -30.4435 and -36.3456 dB in the range of 12.2 GHz to 12.7 GHz (Ku band); in other words, the waveguide 115A between the first horn feeder 121 and the circuit board 17 has Pass-band in the range of 12.2 GHz to 12.7 GHz (Ku band).

Fig. 11 is a schematic view showing a comparison circuit board 17'. As shown in Fig. 11, the comparison circuit board 17' uses a plurality of separate electronic components such as a low noise amplifier (LNA), a filter, an intermediate frequency amplifier (IFA), a mixer, and a local oscillator (Lo). In addition, horn feeders 121 and 123 (shown in dashed lines) that receive microwave signals from satellites need to be separated by a certain distance. Therefore, the comparison board requires a large layout size (space) to match the position of the separated horn feeder and the position of the separated electronic components.

Fig. 12 is a schematic view showing the outer casing 11 and the circuit board 17 of some embodiments of the present disclosure. In some embodiments of the present disclosure, the circuit board 17 includes integrated circuit means between the waveguides (115A, 115B, 119A, 119B) of the housing 11 and the output of the circuit board 17, such as a low noise amplifier (LNA) and Down conversion circuit. In some embodiments of the present disclosure, the waveguide (115A, 115B, 119A, 119B) between the horn shaped feed (121, 123) and the input of the circuit board 17 performs some of the functions of separate electronic components, such as in a comparison circuit. The filter on the board 17'; therefore, compared to the comparison board 17', the layout size of the board 17 can be correspondingly reduced and thus smaller than the size of the housing recess 131.

In some embodiments of the present disclosure, the waveguide 115A has a first end that is in communication with the waveguide 1213 implemented in the horn-shaped recess 1211 of the horn-shaped feeder 121, wherein the circuit board 17 is located in the housing 11, and substantially In addition, the waveguide has a second end that is connected to the circuit board 17, and the circuit board 17 is Substantially overlap the second end.

Fig. 13 and Fig. 14 are exploded views showing the low noise downconverter 10A of some embodiments of the present disclosure from the top and bottom surfaces, respectively. In some embodiments of the present disclosure, the LNB downconverter 10A has a waveguide conversion structure that receives satellite signals, including a housing 11A, a metal plate 15A, and a circuit board 17A. In some embodiments of the present disclosure, circuit board 17B includes a plurality of I-shaped receiving legs 172A each extending into the second waveguide.

In some embodiments of the present disclosure, the outer casing 11A includes a base 111 having an upper surface 111A, a bottom surface 111B, and a recess 113A recessed in a direction from the bottom surface 111B to the upper surface 111A; a number protruding from the upper surface 111A An angled feeder structure 120; a wall portion 130 projecting from the bottom surface 111B, the wall portion 130 forming a housing recess 131 below the bottom surface 111B; and a first conversion structure 141 at the first end of the recess 113A. The outer casing 11A in Fig. 14 is substantially the same as the outer casing 11 in Fig. 3, except that the outer casing 11A in Fig. 14 does not have the second conversion structure (located at the second end of the concave portion 113A). In some embodiments of the present disclosure, the metal plate 15A covers a portion of the recess 113A, and the metal layer 175 (eg, the ground layer of the circuit board 17A) covers a portion of the recess 113A to implement the waveguide 115A in the housing 11A.

In some embodiments of the present disclosure, the metal plate 15A has a recess 155, and the size of the circuit board 17A is substantially the same as the size of the recess 155, so that the metal layer 175 of the metal plate 15A and the circuit board 17A substantially covers the entire recess 113A. To implement the waveguide 115A. In some embodiments of the present disclosure, the size of the circuit board 17A may be arbitrarily increased such that the metal layer 175 is correspondingly enlarged to substantially cover the entire recess 113A, and thus the metal plate 15A may be omitted.

Fig. 15 and Fig. 16 are exploded views showing the low noise downconverter 10B of some embodiments of the present disclosure from the top and bottom surfaces, respectively. In some embodiments of the present disclosure, the LNB downconverter 10B has a waveguide conversion structure that receives satellite signals, including a housing 11B, a circuit board 17B, and a metal portion 19B, wherein the housing 11B and the metal portion 19B form an H-plane waveguide to propagate microwaves. signal.

In some embodiments of the present disclosure, the outer casing 11B includes a base 111 having an upper surface 111A, a bottom surface 111B, and a recess 113A recessed in a direction from the bottom surface 111B to the upper surface 111A; a number protruding from the upper surface 111A An angled feeder structure 120; and a wall portion 130 protruding from the bottom surface 111B, the wall portion 130 forming a housing recess 131 below the bottom surface 111B.

In some embodiments of the present disclosure, the metal plate 19B substantially covers the first recess 210 and has a second recess 190 that is in communication with the first recess 210. In some embodiments of the present disclosure, the horn-shaped feedthrough 121 has a first waveguide implemented in a horn-shaped recess 121 having a first waveguide 210 and a second waveguide implemented in the second recess 190, and a microwave signal It is transmitted from the satellite to the circuit board via the first waveguide and the second waveguide. In some embodiments of the present disclosure, the second waveguide system is substantially non-parallel to the first waveguide. In some embodiments of the present disclosure, the second waveguide is substantially oblique to the first waveguide and the angle of inclination is dependent on the position of the satellite transmitting the microwave signal.

In some embodiments of the present disclosure, the circuit board 17B is located between the base 111 and the metal plate 19B. In some embodiments of the present disclosure, circuit board 17B includes a plurality of L-shaped receiving legs 172B each having a lateral segment on circuit board 17B and a vertical segment extending into the second waveguide.

In some embodiments of the present disclosure, the metal plate 19B has a first bevel 193 configured to direct microwave signals from the first waveguide to the second waveguide. In some embodiments of the present disclosure, metal portion 19B further has a second ramp 195 configured to direct microwave signals from the second waveguide to circuit board 17B. In some embodiments of the present disclosure, an H-plane waveguide is implemented in the first recess 210 and the second recess 190 to propagate microwave signals.

In some embodiments of the present disclosure, a low noise downconverter having a waveguide conversion structure for receiving a satellite signal includes an horn shaped feed structure having at least one first waveguide extending along a first direction; An outer casing having at least one second waveguide extending along a second direction and in communication with the first waveguide, wherein the second direction is substantially non-parallel to the first direction; and a circuit board Within the housing, wherein the circuit board has a receiving leg configured to receive a microwave signal propagating in the second waveguide.

In some embodiments of the present disclosure, an outdoor unit includes a dish antenna and a low noise downconverter having a waveguide conversion structure for receiving satellite signals at a focus of the dish antenna. In some embodiments of the present disclosure, the low noise downconverter includes an horn shaped feed structure having at least one first waveguide extending along a first direction; a housing having a second And at least one second waveguide extending in a direction and communicating with the first waveguide, wherein the second direction is substantially non-parallel to the first direction; and a circuit board disposed within the housing, wherein the circuit board has A receiving leg configured to receive a microwave signal propagating in the second waveguide.

In the low noise downconverter of the comparative example, the horn shaped feeds need to be separated by a certain distance and separate electronic components are used to implement the microwave receiving system. The low noise downconverter of this comparative example uses a circuit board having a large layout size (space) to conform to the position of the separated horn feeder and the position of the separated electronic components. In this prior art, it is known that a circuit board implementing a microwave receiving system is very expensive, and thus the overall cost of the low noise downconverter of this comparative example is also very expensive.

As the industry trend realizes the function of several separate electronic components in a single integrated circuit device, the low noise downconverter having the waveguide conversion structure for receiving satellite signals disclosed herein uses a waveguide in the outer casing to form a horn shaped feeder. Direct the microwave signal to the input port of the board (such as the input 低 of the low noise amplifier). Therefore, the low noise down-converter having the waveguide conversion structure for receiving satellite signals of the present disclosure can use an integrated circuit device for realizing the functions of a plurality of separate electronic components on the circuit board, thereby enabling the technique of the present disclosure to reduce the circuit. The layout size of the board significantly reduces the cost of the low noise downconverter.

The foregoing is a summary of the features of the embodiments, and those skilled in the art can understand the various aspects of the disclosure. Those skilled in the art will appreciate that the disclosure of the present application can be readily utilized as a basis for designing or modifying other processes and structures to achieve the same objectives and/or the same advantages as the embodiments described herein. It should be understood by those skilled in the art that the present invention is not limited by the spirit and scope of the present disclosure, and that various changes, substitutions and substitutions can be made by those skilled in the art without departing from the spirit of the disclosure. range.

Claims (19)

A low noise downconverter having a waveguide conversion structure for receiving a satellite signal, comprising: a first angular feed structure having at least one first waveguide extending along a first direction; a housing having a At least one second waveguide extending in a second direction and in communication with the first waveguide, wherein the second direction is substantially non-parallel to the first direction; and a circuit board disposed within the housing, wherein the circuit The board has a receiving leg configured to receive a microwave signal propagating in the second waveguide; wherein the housing includes a first switching structure configured to direct the microwave signal from the first waveguide to the second waveguide . The low noise down converter of claim 1, wherein the outer casing comprises: a base having an upper surface, a bottom surface, and a recess recessed from the bottom surface toward the upper surface; A metal plate substantially covering the recess to implement the second waveguide. The low noise down converter of claim 2, wherein the metal plate has an opening exposing at least a portion of the second waveguide, the circuit board having a groove corresponding to the opening, and The receiving foot extends into the slot. The low noise down converter of claim 1, wherein the first conversion structure has a multi-level object. The low noise down converter of claim 1, wherein the first conversion structure has a first portion disposed in the horn feeder structure and a second portion disposed in the recess. The low noise downconverter of claim 1, wherein the housing includes a second conversion structure configured to direct the microwave signal from the second waveguide to the circuit board. The low noise down converter of claim 6, wherein the second conversion structure has a multi-level object. The low noise down converter of claim 1, wherein the outer casing comprises: a base having an upper surface, a bottom surface, and a recess recessed from the bottom surface toward the upper surface; And a metal layer on the circuit board, wherein the metal layer covers at least a portion of the recess to achieve at least a portion of the second waveguide. The low noise down converter of claim 8 wherein the outer casing comprises: a metal plate covering at least a portion of the recess to achieve at least a portion of the second waveguide, and the metal plate and the The metal layer substantially covers the recess. The low noise down converter of claim 1, wherein the housing comprises: a base having an upper surface, a bottom surface, and a first recessed from the bottom surface toward the upper surface Concave; and a metal portion substantially covering the first recess to implement the second waveguide, wherein the metal portion has a second recess that is in communication with the first recess. The low noise down converter of claim 10, wherein the circuit board is located between the base and the metal portion. The low noise downconverter of claim 10, wherein the metal portion has a first slope configured to direct the microwave signal from the first waveguide to the second waveguide. The low noise downconverter of claim 12, wherein the metal portion has a second bevel configured to direct the microwave signal from the second waveguide to the circuit board. The low noise down converter of claim 1, wherein the receiving leg extends into the second waveguide. The low noise down converter of claim 1, wherein the second waveguide has a first end that is in communication with the first waveguide, and the position of the circuit board is not substantially opposite to the first end overlapping. The low noise downconverter of claim 15 wherein the second waveguide has a second end in communication with the circuit board and the circuit board substantially overlaps the second end. The low noise down converter of claim 1, wherein the first waveguide has a bottom that is in communication with the second waveguide, and the housing includes a first one extending from a first side of the bottom a recess and a second recess extending from a second side of the bottom. The low noise down converter of claim 1, wherein the horn feeder structure comprises a first horn feeder and the configuration is parallel to the first A second horn feed of the horn feeder. An outdoor unit comprising: a dish antenna; a low noise downconverter having a waveguide conversion structure for receiving a satellite signal, the focus of which is located at a focus of the dish antenna, the low noise downconverter comprising: An angular feed structure having at least one first waveguide extending along a first direction; a housing having at least one second waveguide extending along a second direction and in communication with the first waveguide, wherein The second direction is substantially non-parallel to the first direction; and a circuit board is disposed within the housing, wherein the circuit board has a receiving leg configured to receive a microwave signal propagating in the second waveguide; The housing includes a first conversion structure configured to direct the microwave signal from the first waveguide to the second waveguide.