CN112350041A - 90-degree electric bridge and electronic equipment - Google Patents
90-degree electric bridge and electronic equipment Download PDFInfo
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- CN112350041A CN112350041A CN202011192079.4A CN202011192079A CN112350041A CN 112350041 A CN112350041 A CN 112350041A CN 202011192079 A CN202011192079 A CN 202011192079A CN 112350041 A CN112350041 A CN 112350041A
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- microstrip line
- coupler
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
- H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
- H01P5/18—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers
- H01P5/184—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers the guides being strip lines or microstrips
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Abstract
The invention relates to a 90-degree electric bridge and electronic equipment, wherein a coupler is bent and folded to be arranged on a first medium substrate, so that the size of the 90-degree electric bridge is effectively reduced, and the miniaturization design of the 90-degree electric bridge is realized, wherein the number of sections of the coupler is determined according to the working frequency range, the working frequency range is larger while the size of the 90-degree electric bridge is reduced, the 90-degree electric bridge is suitable for the working frequency range which is less than 1GHz and the ratio of the highest frequency to the lowest frequency is more than 5 times, and experiments prove that under the condition that the ratio of the highest frequency to the lowest frequency is 10 times, the amplitude balance is less than +/-1.0 dB, the phase balance is less than +/-5 degrees, the insertion loss is less than 1.0dB, the output port isolation is less than-17.0 dB, the maximum standing wave ratio is less than 1.3, the use requirement of high power such as 100W can be met, the processing precision is low, and the performance is, no iterative debugging is required.
Description
Technical Field
The invention belongs to the technical field of microwave devices, and particularly relates to a 90-degree electric bridge and electronic equipment.
Background
The 90-degree bridge is used as an important microwave passive device and widely applied to radio frequency, microwave communication, radar systems and the like, at present, two multiple couplers with the same coupling degree of 8.34dB are connected in series in a crossed mode to form the 90-degree bridge, the number of sections of the couplers and the length of each section of the couplers are determined according to the working frequency range, but when the working frequency is smaller than 1GHz and the ratio of the highest frequency to the lowest frequency of the working frequency range is larger than 5 times, the length of each section of the couplers is relatively long, the number of sections of the couplers is increased, the volume of the 90-degree bridge is too large, and the use requirements cannot be met.
Disclosure of Invention
The invention provides a 90-degree electric bridge and electronic equipment, aiming at the defects of the prior art.
The technical scheme of the 90-degree bridge is as follows:
includes a first dielectric substrate and a plurality of lengths of coupler arranged in a serpentine arrangement on the first dielectric substrate.
The 90-degree bridge has the following beneficial effects:
the size of the 90-degree electric bridge is effectively reduced by arranging the first medium substrate after bending and folding the multiple sections of couplers, and the miniaturization design of the 90-degree electric bridge is realized, wherein the number of the sections of the couplers is determined according to the working frequency range, the working frequency range of the 90-degree electric bridge is larger while the size of the 90-degree electric bridge is reduced, the 90-degree electric bridge is suitable for the working frequency range which is smaller than 1GH and the ratio of the highest frequency to the lowest frequency is larger than 5 times, and experiments prove that under the condition that the ratio of the highest frequency to the lowest frequency is 10 times, the amplitude balance is smaller than +/-1.0 dB, the phase balance is smaller than +/-5 degrees, the insertion loss is smaller than 1.0dB, the isolation of an output port is smaller than-17.0 dB, the maximum standing wave ratio is smaller than 1.3, the use requirement of high power such as 100W can be met, the processing precision is low, the performance is stable.
On the basis of the above scheme, the 90-degree bridge of the present invention can be further improved as follows.
Further, an upper surface microstrip line and a lower surface microstrip line are respectively arranged on two surfaces of the first medium substrate, the upper surface microstrip line and the lower surface microstrip line are respectively formed by sequentially connecting multiple sections of microstrip lines end to end, the specifications of every two adjacent sections of microstrip lines are different, the upper surface microstrip line and the lower surface microstrip line are arranged in a bending and folding mode, and the multiple sections of microstrip lines arranged in parallel on the upper surface microstrip line and the lower surface microstrip line form multiple sections of couplers.
The beneficial effect of adopting the further scheme is that: the coupler is formed by multiple sections of microstrip lines which are arranged in parallel on the upper surface microstrip line and the lower surface microstrip line, so that the coupler obtains corresponding coupling degree and phase value.
Furthermore, two ends of the upper surface microstrip line and the lower surface microstrip line are respectively connected with a radio frequency coaxial connector.
The beneficial effect of adopting the further scheme is that: the two ends of the upper surface microstrip line and the lower surface microstrip line are respectively connected with the radio frequency coaxial connector, so that signals can be conveniently input and received through the radio frequency coaxial connectors.
The first dielectric substrate is arranged in the shell, and each radio frequency coaxial connector is fixed on the outer surface wall of the shell and is respectively connected with two ends of the upper surface microstrip line and the lower surface microstrip line.
The beneficial effect of adopting the further scheme is that: by disposing the first dielectric substrate within the housing and securing the rf coaxial connectors to the outer surface wall of the housing, a 90 degree bridge of the present application is more structurally stable.
The second dielectric substrate, the first dielectric substrate and the third dielectric substrate are arranged in parallel in sequence.
The beneficial effect of adopting the further scheme is that: the first dielectric substrate is clamped between the second dielectric substrate and the third dielectric substrate, so that the microstrip line and the radio frequency coaxial connector can be matched conveniently.
Further, the first medium substrate is made of glass fiber cloth.
The beneficial effect of adopting the further scheme is that: when the first medium substrate is made of glass fiber cloth, the upper surface microstrip line and the lower surface microstrip line have small loss during signal transmission, and the amplitude phase of a transmission signal is stable.
Further, the second medium substrate and the third medium substrate are made of glass fiber cloth.
The beneficial effect of adopting the further scheme is that: when the second medium substrate and the third medium substrate are made of glass fiber cloth, the loss of the upper surface microstrip line and the lower surface microstrip line during signal transmission is further reduced, and the amplitude phase of the transmission signal is stable.
The technical scheme of the electronic equipment comprises the following steps: comprising a 90 degree bridge as described in any of the above.
The electronic equipment has the following beneficial effects:
because the 90-degree electric bridge of the application is formed by bending and folding a plurality of sections of couplers and arranging a first medium substrate, the size of the 90-degree electric bridge is effectively reduced, and the miniaturization design of the 90-degree electric bridge is realized, wherein the number of the sections of the couplers is determined according to the working frequency range, the working frequency range is larger while the size of the 90-degree electric bridge is reduced, the 90-degree electric bridge is suitable for the working frequency range which is less than 1GHz and the ratio of the highest frequency to the lowest frequency is more than 5 times, and experiments prove that under the condition that the ratio of the highest frequency to the lowest frequency is 10 times, the amplitude balance is less than +/-1.0 dB, the phase balance is less than +/-5 degrees, the insertion loss is less than 1.0dB, the output port isolation is less than-17.0 dB, and the maximum standing wave ratio is less than 1.3, the use requirement of high power such as 100W can be met, the processing precision is low, and the performance is, repeated debugging is not needed, so that the size of the electronic equipment can be reduced, the working frequency range of the electronic equipment is wider, and the performance is stable.
Drawings
FIG. 1 is an exploded view of a 90-degree bridge according to an embodiment of the present invention;
FIG. 2 is an external structural view of a 90-degree bridge according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an upper surface microstrip line and a lower surface microstrip line of a 90-degree bridge according to an embodiment of the present invention;
FIG. 4 is an output phase performance curve for a 90 degree bridge according to an embodiment of the present invention;
FIG. 5 is a graph of the output phase performance of the same 90 degree bridge as in FIG. 3;
FIG. 6 is a graph of bridge isolation performance for the same 90 degree bridge as in FIG. 3;
FIG. 7 is a standing wave ratio performance curve for the same 90 degree bridge as in FIG. 3;
in the drawings, the components represented by the respective reference numerals are listed below:
1. a first dielectric substrate; 2. a second dielectric substrate; 3. a third dielectric substrate; 4. a first radio frequency coaxial connector; 5. a second radio frequency coaxial connector; 6. a third radio frequency coaxial connector; 7. a fourth radio frequency coaxial connector; 8. a first coupler; 9. a second coupler; 10. a third coupler; 11. a fourth coupler; 12. a fifth coupler; 13. a sixth coupler; 14. a seventh coupler; 15. an eighth coupler; 16. a first microstrip line; 17. a second microstrip line; 18. a third microstrip line; 19. a fourth microstrip line; 20. a fifth microstrip line; 21. a sixth microstrip line; 22. a cover plate; 21. a housing;
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
As shown in fig. 1 to 3, a technical solution of a 90-degree bridge according to an embodiment of the present invention is as follows:
comprises a first dielectric substrate 1 and a plurality of lengths of couplers arranged on the first dielectric substrate 1 in a bent and folded manner.
The size of the 90-degree electric bridge is effectively reduced by arranging the multi-section coupler on the first medium substrate 1 after bending and folding, and the miniaturization design of the 90-degree electric bridge is realized, wherein the number of the sections of the coupler is determined according to the working frequency range, the working frequency range of the 90-degree electric bridge is larger while the size of the 90-degree electric bridge is reduced, the 90-degree electric bridge is suitable for the working frequency range which is less than 1GHz and the ratio of the highest frequency to the lowest frequency is more than 5 times, and experiments prove that under the condition that the ratio of the highest frequency to the lowest frequency is 10 times, the amplitude balance is less than +/-1.0 dB, the phase balance is less than +/-5 degrees, the insertion loss is less than 1.0dB, the isolation of an output port is less than-17.0 dB, the maximum standing wave ratio is less than 1.3, the use requirement of high power such as 100W can be met, the processing precision is low, the performance is stable.
The first medium substrate 1 is made of glass fiber cloth, such as Teconly TLX-8PTFE glass fiber cloth. The number of sections of the coupler and the length of each section of the coupler can be determined according to the operating frequency range, and the specific technical details thereof are known to those skilled in the art and will not be described herein.
Preferably, in the above technical solution, two surfaces of the first dielectric substrate 1 are respectively provided with an upper surface microstrip line and a lower surface microstrip line, the upper surface microstrip line and the lower surface microstrip line are respectively formed by sequentially connecting multiple sections of microstrip lines end to end, and each two adjacent sections of microstrip lines have different specifications, the upper surface microstrip line and the lower surface microstrip line are arranged in a bending and folding manner, and multiple sections of microstrip lines arranged in parallel on the upper surface microstrip line and the lower surface microstrip line form multiple sections of the coupler.
Preferably, in the above technical solution, two ends of the upper surface microstrip line and the lower surface microstrip line are respectively connected to a radio frequency coaxial connector. The two ends of the upper surface microstrip line and the lower surface microstrip line are respectively connected with the radio frequency coaxial connector, so that signals can be conveniently input and received through the radio frequency coaxial connectors.
Taking fig. 2 as an example for explanation, the upper surface of the first dielectric substrate 1 facing the screen, the lower surface of the first dielectric substrate 1 facing away from the screen, the solid line represents the upper surface microstrip line, and the dotted line represents the lower surface microstrip line, wherein, in order to ensure that each rf coaxial connector is on the same plane, so as to make the housing, etc., the second microstrip line 17 of the lower surface microstrip line is led to the upper surface of the first dielectric substrate 1 through the metalized via hole provided on the first dielectric substrate 1, and is connected with the second rf coaxial connector 5; similarly, a sixth microstrip line 21 of the microstrip line on the lower surface is led to the upper surface of the first dielectric substrate 1 through a metalized via hole arranged on the first dielectric substrate 1, and is connected with the fourth radio frequency coaxial connector 7;
the upper surface microstrip line and the lower surface microstrip line are respectively formed by sequentially connecting multiple sections of microstrip lines end to end, and the specifications of every two adjacent sections of microstrip lines are different, so that signals can be transmitted between every two adjacent sections of microstrip lines, and the multiple sections of microstrip lines arranged in parallel on the upper surface microstrip line and the lower surface microstrip line form multiple sections of couplers, for example, a first coupler 8, a second coupler 9, a third coupler 10, a fourth coupler 11, a fifth coupler 12, a sixth coupler 13, a seventh coupler 14 and an eighth coupler 15, it can be understood that the specifications of the two sections of microstrip lines forming each coupler are the same, so that better coupling can be performed;
since the microstrip line arranged in parallel with the first microstrip line 16 in the upper surface microstrip line is absent in the lower surface microstrip line, the first microstrip line 16 cannot constitute a coupler, and similarly, the second microstrip line 17, the third microstrip line 18, the fourth microstrip line 19, the fifth microstrip line 20, and the sixth microstrip line 21 also cannot constitute a coupler.
Two ends of the upper surface microstrip line and the lower surface microstrip line are respectively connected with a radio frequency coaxial connector, namely, a first microstrip line 16 of the upper surface microstrip line is connected with a first radio frequency coaxial connector 4, a second microstrip line 17 is connected with the first radio frequency coaxial connector 4, a fifth microstrip line 20 is connected with a third radio frequency coaxial connector 6, and a sixth microstrip line 21 is connected with a fourth radio frequency coaxial connector 7.
Then the signal transmission process has the following two ways:
1) when a signal is input from the first radio frequency coaxial connector 4, at this time, the port of the second radio frequency coaxial connector 5 is an isolation port, and when the signal is transmitted to the first coupler 8, the signal is divided into a first part and a second part through the coupling effect between the first couplers 8, the first part is coupled to the microstrip line of the first coupler 8, which is located on the microstrip line on the lower surface, and then transmitted to the third microstrip, and further transmitted through the third microstrip, then the first part is continuously divided into two parts under the coupling effect of the eighth coupler 15, and so on, and after passing through the seventh coupler 14, the sixth coupler 13, the fifth coupler 12, the fourth coupler 11, the third coupler 10 and the second coupler 9, the first signal is output from the fourth radio frequency coaxial connector 7;
the second part is directly transmitted to a fourth microstrip line 19 through a microstrip line of the first coupler 8 positioned on the upper surface microstrip line, and is continuously transmitted through the fourth microstrip, then the second part is continuously divided into two parts under the action of the second coupler 9, and by analogy, a second signal is output at a third radio frequency coaxial connector 6 through a third coupler 10, a fourth coupler 11, a fifth coupler 12, a sixth coupler 13, a seventh coupler 14 and an eighth coupler 15;
at this time, the phase of the second signal output by the third rf coaxial connector 6 lags behind the phase of the first signal output by the third rf coaxial connector 6 by 90 degrees;
it can be understood that the second signal output by the third rf coaxial connector 6 and the first signal output by the third rf coaxial connector 6 both include a through signal and a coupling signal, where the through signal refers to a signal directly transmitted through a microstrip line, and the coupling signal refers to a signal coupled by the coupling action of the first coupler 8, the second coupler 9, the third coupler 10, the fourth coupler 11, the fifth coupler 12, the sixth coupler 13, the seventh coupler 14 and the eighth coupler 15;
2) when a signal is input from the second radio frequency coaxial connector 5, the signal is transmitted to the first coupler 8, the signal is divided into a first part and a second part through the coupling effect between the first couplers 8, the first part is coupled to a microstrip line of the first coupler 8, which is positioned on a microstrip line on the upper surface, then is transmitted to a fourth microstrip, and is continuously transmitted through the fourth microstrip, then under the coupling effect of the second coupler 9, the first part is continuously divided into two parts, and so on, and after passing through the seventh coupler 14, the sixth coupler 13, the fifth coupler 12, the fourth coupler 11, the third coupler 10 and the second coupler 9, the first signal is output from the third radio frequency coaxial connector 6;
the second part is directly transmitted to a third microstrip line 18 through a microstrip line of the first coupler 8, which is positioned on the lower surface microstrip line, and is continuously transmitted through the third microstrip line, then the second part is continuously divided into two parts under the action of the second coupler 9, and by analogy, a second signal is output at a fourth radio frequency coaxial connector 7 through a third coupler 10, a fourth coupler 11, a fifth coupler 12, a sixth coupler 13, a seventh coupler 14 and an eighth coupler 15;
at this time, the phase of the second signal output by the third rf coaxial connector 6 is advanced by 90 degrees compared with the phase of the first signal output by the third rf coaxial connector 6;
it will be appreciated that the first signal output by the third rf coaxial connector 6 and the second signal output by the fourth rf coaxial connector 7 also comprise a through signal and a coupled signal, respectively.
The upper surface microstrip line and the first medium substrate 1, and the lower surface microstrip line and the first medium substrate 1 can be fixed by fixing methods such as gluing;
the connection between the first microstrip line 16 and the first radio frequency coaxial connector 4, the connection between the second microstrip line 17 and the second radio frequency coaxial connector 5, the connection between the fifth microstrip line 20 and the third radio frequency coaxial connector 6, and the connection between the sixth microstrip line 21 and the fourth radio frequency coaxial connector 7 can be performed in a soldering manner, so that the interference on the output or input signal and the distortion caused by the interference can be avoided, and the performance of the 90-degree bridge of the present application can be affected.
Preferably, in the above technical solution, the antenna further includes a housing, the first dielectric substrate 1 is disposed in the housing, and each of the radio frequency coaxial connectors is fixed on an outer surface wall of the housing and is respectively connected to two ends of the upper surface microstrip line and the lower surface microstrip line.
By arranging the first dielectric substrate 1 in the housing and fixing the rf coaxial connectors on the outer surface wall of the housing, the structure of a 90-degree bridge of the present application is more stable.
Each radio frequency coaxial connector can be fixed on the outer surface wall of the shell through screws, wherein the shell can be designed according to actual conditions, such as a cubic box structure, the shell in fig. 2 and 3 comprises a cover plate 22 and a shell 23, the shell 23 is formed by surrounding four outer surface walls and two cover plates 22, the four outer surface walls are sequentially connected in an initial position and then surrounded, and the two cover plates 22 are arranged oppositely.
Preferably, in the above technical solution, the package further includes a second dielectric substrate 2 and a third dielectric substrate 3 disposed in the housing, and the second dielectric substrate 2, the first dielectric substrate 1 and the third dielectric substrate 3 are sequentially disposed in parallel.
The second medium substrate 2 and the third medium substrate 3 are made of glass fiber cloth, such as Taconly TLX-8PTFE glass fiber cloth. When the first dielectric substrate, the second dielectric substrate and the third dielectric substrate are made of glass fiber cloth, the loss of the upper surface microstrip line and the lower surface microstrip line during signal transmission is further reduced, and the amplitude phase of the transmission signal is stable.
The second dielectric substrate 2, the first dielectric substrate 1 and the third dielectric substrate 3 can be fixed by screws to fix the housing and the three dielectric substrates, and when the screws are fastened, the upper surface microstrip line and the lower surface microstrip line can be pressed to prevent the movement and deformation of the upper surface microstrip line and the lower surface microstrip line.
The performance of the 90-degree electric bridge is tested, and the working frequency range of the 90-degree electric bridge is 0.1 GHz-1 GHz;
as shown in fig. 4, the curves S31 and S41 show the test results of the amplitude values of the output signals at the two output ports when the input port inputs a signal of 0dB size when the bridge first rf coaxial connector 4 is used as the input port and the third rf coaxial connector 6 and the fourth rf coaxial connector 7 are used as the output ports. From the test result, in the working frequency band, the amplitude values of the two output signals are within the range of-3.3 +/-0.8 dB, and the amplitude balance performance is good.
As shown in fig. 5, the curve phase difference represents the phase difference test result of the output signals at the two output ports when the first rf coaxial connector 4 of the bridge is used as the input port and the third rf coaxial connector 6 and the fourth rf coaxial connector 7 are used as the output ports. From the test result, in the working frequency band, the phase difference is both positioned at 90 degrees +/-2.5 degrees, and the phase balance performance is good.
As shown in fig. 6, a curve S21 shows the amplitude value test result of the isolated port when the input port inputs a 0dB signal when the first rf coaxial connector 4 of the bridge is used as the input port and the second rf coaxial connector 5 is used as the isolated port. From the test results, it can be seen that, within the working frequency band, the output amplitude values of the isolation ports are all below-17 dB, and the isolation performance is good.
As shown in fig. 7, the curves VSWR1 and VSWR2 represent standing wave ratio test results when the first rf coaxial connector 4 and the second rf coaxial connector 5 are respectively used as input ports. From the test result, in the working frequency band, the standing-wave ratios are all below 1.2, and the standing-wave ratio performance is good.
An electronic device according to an embodiment of the present invention includes a 90-degree bridge according to any one of the above embodiments.
Since the 90-degree electric bridge of any of the above embodiments is configured by bending and folding a plurality of couplers on the first dielectric substrate 1, the size of the 90-degree electric bridge is effectively reduced, and the miniaturized design of the 90-degree electric bridge is realized, wherein the number of the couplers is determined according to the working frequency range, and the working frequency range is larger while the size of the 90-degree electric bridge is reduced, the 90-degree electric bridge is suitable for the working frequency less than 1GH and/or the working frequency range in which the ratio of the highest frequency to the lowest frequency is greater than 5 times, and experiments prove that, under the condition that the ratio of the highest frequency to the lowest frequency is 10 times, the phase balance is less than ± 5 degrees, the insertion loss is less than 1.0dB, the isolation of the output port is less than-17.0 dB, the maximum standing wave ratio is less than 1.3, and the use requirement of high power such as 100W can be satisfied, the processing precision is low, and the performance is stable, repeated debugging is not needed, so that the size of the electronic equipment can be reduced, the working frequency range of the electronic equipment is wider, and the performance is stable.
Wherein, the electronic device can be: a circular polarizer of an antenna, a power detection device in a power meter, a phase control device in a radio frequency signal link, and the like.
In the present invention, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (8)
1. A 90 degree electrical bridge comprising a first dielectric substrate and a plurality of lengths of coupler arranged in a meandering fold on said first dielectric substrate.
2. The 90-degree bridge according to claim 1, wherein an upper surface microstrip line and a lower surface microstrip line are respectively arranged on two surfaces of the first dielectric substrate, the upper surface microstrip line and the lower surface microstrip line are respectively formed by sequentially connecting multiple sections of microstrip lines end to end, the specifications of every two adjacent sections of microstrip lines are different, the upper surface microstrip line and the lower surface microstrip line are arranged in a bending and folding manner, and the multiple sections of microstrip lines arranged in parallel on the upper surface microstrip line and the lower surface microstrip line form multiple sections of the coupler.
3. The 90-degree bridge according to claim 2, wherein two ends of the upper surface microstrip line and the lower surface microstrip line are respectively connected with a radio frequency coaxial connector.
4. The 90-degree bridge according to claim 3, further comprising a housing, wherein the first dielectric substrate is disposed in the housing, and each of the rf coaxial connectors is fixed on an outer surface wall of the housing and is connected to two ends of the upper surface microstrip line and the lower surface microstrip line, respectively.
5. A90 degree electrical bridge according to claim 4 further comprising a second dielectric substrate and a third dielectric substrate disposed within said housing, said second dielectric substrate, said first dielectric substrate and said third dielectric substrate being disposed in parallel in that order.
6. A90 degree electrical bridge according to any one of claims 1 to 5 wherein the first dielectric substrate is of fiberglass cloth.
7. A90 degree electrical bridge according to claim 5 wherein the second dielectric substrate and the third dielectric substrate are made of fiberglass cloth.
8. An electronic device comprising a 90 degree bridge as claimed in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011192079.4A CN112350041A (en) | 2020-10-30 | 2020-10-30 | 90-degree electric bridge and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011192079.4A CN112350041A (en) | 2020-10-30 | 2020-10-30 | 90-degree electric bridge and electronic equipment |
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| CN112350041A true CN112350041A (en) | 2021-02-09 |
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| CN202011192079.4A Pending CN112350041A (en) | 2020-10-30 | 2020-10-30 | 90-degree electric bridge and electronic equipment |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104300195A (en) * | 2014-10-13 | 2015-01-21 | 世达普(苏州)通信设备有限公司 | Surface-mounted ultra-wideband 3dB electric bridge |
| CN108879057A (en) * | 2018-06-14 | 2018-11-23 | 杭州维慕德科技有限公司 | A kind of high degree of balance distributor of minimized wide-band |
| CN110797620A (en) * | 2019-10-22 | 2020-02-14 | 中国电子科技集团公司第十三研究所 | 3dB bridge and preparation method thereof |
| CN211700527U (en) * | 2020-05-14 | 2020-10-16 | 中国人民解放军91977部队 | 3dB 90-degree electric bridge based on 4-layer PCB structure |
-
2020
- 2020-10-30 CN CN202011192079.4A patent/CN112350041A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104300195A (en) * | 2014-10-13 | 2015-01-21 | 世达普(苏州)通信设备有限公司 | Surface-mounted ultra-wideband 3dB electric bridge |
| CN108879057A (en) * | 2018-06-14 | 2018-11-23 | 杭州维慕德科技有限公司 | A kind of high degree of balance distributor of minimized wide-band |
| CN110797620A (en) * | 2019-10-22 | 2020-02-14 | 中国电子科技集团公司第十三研究所 | 3dB bridge and preparation method thereof |
| CN211700527U (en) * | 2020-05-14 | 2020-10-16 | 中国人民解放军91977部队 | 3dB 90-degree electric bridge based on 4-layer PCB structure |
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