CN109326862A - A kind of combined type millimeter wave narrow side power splitter and power combining methods - Google Patents
A kind of combined type millimeter wave narrow side power splitter and power combining methods Download PDFInfo
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- CN109326862A CN109326862A CN201811261289.7A CN201811261289A CN109326862A CN 109326862 A CN109326862 A CN 109326862A CN 201811261289 A CN201811261289 A CN 201811261289A CN 109326862 A CN109326862 A CN 109326862A
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- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
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Abstract
The invention discloses a kind of combined type millimeter wave narrow side power splitter and power combining methods, the combined type millimeter wave narrow side power splitter, including for being synthesized in standard waveguide full frequency band and exporting the transmission cavity of broadband power, cover board at the top of transmission cavity is set and the radiator of transmission cavity bottom is set, the two sides of the transmission cavity are provided with standard rectangular waveguide input port and standard rectangular output waveguide port, there are four amplification transmission cavitys for setting in the transmission cavity body, first face E waveguide power divider, 2nd face E waveguide power divider, E surface wave leads microstrip probe transformational structure, E surface wave leads double probes and the face E waveguide combiner.The present invention uses novel waveguide transmission structure, and power combining efficiency is high, and working band is wide, and radiating efficiency is high, and productibility is strong, strong antijamming capability, is easy to extend integrated.
Description
Technical field
This disclosure relates to power synthetic technique field, and in particular to a kind of combined microwave millimeter wave narrow side power splitter and function
Rate synthetic method.
Background technique
With the development of microwave and millimeter wave technology, requirements at the higher level are proposed to power amplifier output power, in existing function
In the limited situation of rate amplification chip output power, carrying out multichannel power combing using power synthetic technique is that raising system exports
A kind of effective means of power capability.At home and abroad efficient power distribution synthetic technology is always badly in need of the technology captured hardly possible
Topic, the common problem encountered are how effectively further to improve power distribution/combined coefficient, reduce loss, increase work
Make bandwidth and improve power capacity etc..
Currently, power synthetic technique is broadly divided into planar power synthesis and two kinds of space power synthesis, planar power synthesis
Although technology structure type is simple, and its combined coefficient and receiving power capability are unsatisfactory.And space power synthesis technology phase
To with planar power synthetic technology, have many advantages, such as that path loss is low big with power capacity, but its common problem for being encountered
Be how effectively further to improve power combining efficiency, reduce loss, increase bandwidth of operation, improve power capacity, improve dissipate
The thermal efficiency and reduction processing, rigging error etc..Space power synthesis technology based on radial waveguide is a kind of common space conjunction
At technological means, overall structure is that space is radial, but its processing hardly results in guarantee with rigging error, and often puts all the way
Effective heat dissipation area of big unit is smaller, and radiating efficiency is low, is difficult suitable for the synthesis system of more high power capacity；In addition,
Waveguide and waveguide crotch are easy to evoke higher mode, deteriorate the echo reflection of input port, to leverage its insertion damage
The efficiency of consumption and power combing equally has certain limitation.Existing power combiner has the disadvantage that
In terms of work bandwidth, conventional planar power combiner and it is common based on radial waveguide spatial power combiner all
There is certain limitation, can not work in complete broad frequency range；
In terms of radiating efficiency, conventional planar power combiner is complete in dielectric material with synthesis due to its power distribution
At, heat dissipation and power capacity problem are always insurmountable problem, and the spatial power combiner based on radial waveguide,
Overall structure is that radiation is discoid, and effective heat dissipation area per amplifying unit all the way is limited, and radiating efficiency is also unable to get effectively
Raising；
In terms of combined coefficient, conventional planar synthesizer path loss is big, phase equalization is poor, it is difficult to ensure that it has very
High combined coefficient, and when the work of the power combiner based on radial waveguide, waveguide and waveguide turnoff are easy to evoke higher mode,
The echo reflection for deteriorating input port, to leverage the efficiency of its insertion loss and power combing；
In terms of productibility, traditional its overall structure of radial waveguide spatial power combiner is radial for space, but
Its is maximum the disadvantage is that high to processing and the requirement of build-up tolerance.
In conclusion how to solve above-mentioned existing power combiner, still lack effective solution
Scheme.
Summary of the invention
In order to overcome the above-mentioned deficiencies of the prior art, present disclose provides a kind of combined type millimeter wave narrow side power splitter and function
Rate synthetic method, using novel waveguide transmission structure, power combining efficiency is high, and working band is wide, and radiating efficiency is high, productibility
By force, strong antijamming capability is easy to extend integrated.
Technical solution used by the disclosure is:
A kind of combined type millimeter wave narrow side power splitter, including for being synthesized in standard waveguide full frequency band and exporting broadband power
Transmission cavity, be arranged in transmission cavity at the top of cover board and be arranged in transmission cavity bottom radiator.
Further, the transmission cavity is rectangular configuration, and the two sides of the transmission cavity are provided with standard rectangular waveguide
Input port and standard rectangular output waveguide port, and standard rectangular waveguide input port and standard rectangular output waveguide port position
In in same horizontal line.
Further, solid on the outer lateral edge wall of the standard rectangular waveguide input port and standard rectangular output waveguide port
Surely it is provided with sealed batten.
Further, the side in the transmission cavity body close to standard rectangular waveguide input port is provided with for that will pass through
The input signal of standard rectangular waveguide input port input is divided into the first face the E wave guide power point of the first signal of two-way constant amplitude reverse phase
Device, the both ends of the first face E waveguide power divider are connected separately with for the first signal to be divided into the second of two-way constant amplitude reverse phase
2nd face E waveguide power divider of signal.
Further, there are four press the equally distributed amplification transmission cavity of planar array mode for setting in the transmission cavity body
Body, four amplification transmission cavity bodies are located between two the 2nd face E waveguide power dividers, are provided with spiral shell dress on each amplification transmission cavity
Formula molybdenum copper backing, is welded with amplification chip on spiral assembly type molybdenum copper backing, and the amplification chip is used for the 2nd face E wave guide power
Divide the second signal power amplification of device output at third signal.
Further, E surface wave is further fixedly arranged on two amplification transmission cavitys being located in same horizontal line lead-micro-strip
Double probe transformational structures, the E surface wave lead the-double probe transformational structures of micro-strip, the two-way etc. for generating two amplification chips
The third signal of width reverse phase synthesizes signal all the way.
Further, the face E waveguide combiner is additionally provided in the transmission cavity body, the face E waveguide combiner is located at two
A E surface wave leads-the double probe transformational structures of micro-strip between, two E surface waves lead-the double probe transformational structures of micro-strip pass through E surface wave respectively
It leads double probes and the signal of synthesis is sent into the face E waveguide combiner, the face E waveguide combiner synthesizes the two paths of signals received
Signal all the way, the signal after synthesis are exported by standard rectangular output waveguide port.
Further, the one side of the cover board towards transmission cavity is panelized structure, and another side is provided with for placing
The positive pressure biasing cabling channel of positive crimping, the negative pressure for placing negative pressure line bias cabling channel and three-dimensional offset line transmission hole.
A kind of power combining methods based on combined type millimeter wave narrow side power splitter as described above, this method includes following
Step:
Input signal is entered in cavity by transmitting the standard rectangular waveguide input port of cavity, by the face E wave guide power point
Device is divided into the first signal of two-way constant amplitude reverse phase；
The first signal of two-way after second face E waveguide power divider, is further divided into four tunnel second signals respectively,
The middle same phase of two-way second signal constant amplitude, two-way second signal constant amplitude reverse phase；
After four tunnel second signals carry out power amplification by amplification chip respectively, four tunnel third signals of formation, wherein two
Road third signal phase is identical, and two-way third signal phase is opposite；
In four tunnel third signals, the third signal of every two-way opposite in phase leads the-double probe Change-over knots of micro-strip by E surface wave
The two-way third signal of constant amplitude reverse phase is carried out first time power combing by structure, is led double probes by E surface wave and is closed first time power
Signal after is sent into the face E waveguide combiner；
The signal after two-way first time power combing is synthesized into signal all the way by the face E waveguide combiner, after synthesis
Signal is exported by standard rectangular output waveguide port, realizes the constant amplitude reverse phase power distribution and synthesis of four road signals.
Compared with prior art, the beneficial effect of the disclosure is:
(1) disclosure uses the face E waveguide power divider and E surface wave and leads double probes as power distribution and synthesis unit, excellent
In the traditional face H power distribution and synthesizer, working frequency range can the direct corresponding full operating frequency range of coverage criteria waveguide；
(2) the transmission cavity of the disclosure is designed as regular rectangular shape structure, uses the arrangement amplification of planar array distribution mode
Cavity is transmitted, heat source is evenly distributed, and the amplifying unit of inside cavity is all placed in cavity bottom, and cavity bottom is provided with high efficiency and heat radiation
Device, heat can be transmitted directly to substantially increase the radiating efficiency of synthesizer, simultaneously with the close-connected radiator of lower chamber
Amplification chip is welded on molybdenum copper pad using eutectic Welding, is then screwed in lower transmission cavity, improve assembly and
Maintenance efficiency, and increase heat conduction efficiency；
(3) input terminal of the transmission cavity of the disclosure and output end waveguide are placed on same horizontal line, and E surface wave is utilized
Power splitter and the double probes of waveguide E face are led as power distribution and synthesis unit, optimization layout carries out signal synthesis output channel
The processing of most shortization, meanwhile, in transmission channel other than microstrip probe, then without other media materials, greatly reduce access damage
Consumption, improves the synthesis and efficiency of transmission of signal.
(4) disclosure uses integration cutting and processing technology production transmission cavity and cover board, entire power combiner
Only it is divided into lower transmission cavity and upper cover plate double-layer structure, it is compact-sized, it is easy to process, build-up tolerance is reduced, total
Assembling fitting surface is planar configuration, and assembling process is simple, and technical requirements are low, substantially increases its productibility.
(5) DC bias networks of the disclosure use the form coplanar with microwave circuit, positive pressure and negative pressure offset line point
It is placed in different cabling channels, effectively prevents the interference between positive and negative current voltage, the electromagnetism for substantially increasing module itself is simultaneous
Capacitive, and mutual-inserting type connector and extraneous interconnection are used, convenient for the replacement and repair of module, greatly reduce the processing of structure
With assembly difficulty, the technical requirements of broadband, high-power, small size and high reliability can be met, be microwave and millimeter wave space function
Rate synthesis provides a kind of effective technological means.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.
Fig. 1 is the structure chart of spatial power combiner of existing 8 roadbed in radial waveguide；
Fig. 2 is the millimeter wave narrow side power splitter overall structure figure of the disclosure；
Fig. 3 is transmission inside cavity structure chart；
Fig. 4 is covering plate structure and embedded offset line cabling channel distribution map.
Specific embodiment
The invention will be further described with embodiment with reference to the accompanying drawing.
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
Currently, power synthetic technique is broadly divided into planar power synthesis and two kinds of space power synthesis.Planar power synthesis
Although technology structure type is simple, and its combined coefficient and receiving power capability are unsatisfactory.Skill is synthesized compared to planar power
Art, space power synthesis technology have many advantages, such as that insertion loss is low, combined coefficient is high, and diameter is based in space power synthesis technology
It is a kind of common technological means to the synthetic technology of waveguide, is as shown in Figure 1 a kind of 8 roadbeds in the power combing of radial waveguide
Device, input signal are entered by standard coaxial 1-1, and the signal of standard coaxial transmitting enters rectangular ridge by ladder gradual change disk 1-2
In the disk 1-3 of waveguide composition, 8 tunnels then are equally assigned into via gradual change ridge waveguide 1-4, the signal after distribution is micro- using waveguide
Band probe 1-5 is entered to be amplified per in amplification access 1-6 all the way, and amplified signal recycles perfectly sound symmetrical with distributor
Structure carry out power combing output, the final power combing for realizing 8 road signals.
The technical solution of space power synthesis shown in FIG. 1, can by input signal constant amplitude same-phase be allocated with
Synthesis, but be difficult to realize Broadband Matching in all-wave pilot, and waveguide and waveguide turnoff are easy to evoke higher mode, deteriorate defeated
The echo reflection of inbound port, to leverage the efficiency of its insertion loss and power combing；Meanwhile the technical solution is whole
Structure be space it is radial, it is processed it is more demanding with assembly technology, processing with rigging error hardly result in guarantee, and
Effective heat dissipation area per amplifying unit all the way is smaller, and radiating efficiency is low, is difficult the synthesis system suitable for more high power capacity
In, therefore, technical solution has certain limitation.
In order to solve deficiency present in current power synthetic technique, the present disclosure proposes what is processed based on integrated design
A kind of combined type millimeter wave narrow side power splitter and power combining methods.
The present embodiment provides a kind of combined type millimeter wave narrow side power splitters, as shown in Fig. 2, the combined type millimeter wave narrow side function
The overall structure of point device is divided into upper layer and lower layer, it is main include transmission cavity 2-1, the cover board 2-2 being arranged on transmission cavity 2-1 and
The radiator 2-3 of transmission cavity bottom is set.
Fig. 3 is the schematic diagram of internal structure for transmitting cavity 2-1.As shown in figure 3, the two sides of the transmission cavity are provided with mark
Quasi-retangular wave leads input port 3-1 and standard rectangular output waveguide port 3-8, and standard rectangular waveguide input port 3-1 with
Standard rectangular output waveguide port 3-8 is located in same horizontal line, it is easier to assembly and integrated, raising with external microwave module
Efficiency of transmission after power combing；The outer lateral edge of the standard rectangular waveguide input port and standard rectangular output waveguide port
It is fixedly installed sealed batten on wall, sealed batten is fixed on transmission cavity by intensive rigging screw, is further increased
Shielding properties；Two groups of symmetrically arranged amplification storage devices, the first face E waveguide power divider 3- are provided in the transmission cavity body
2, the 2nd face E waveguide power divider 3-11, E surface wave, which leads microstrip probe transformational structure 3-3, E surface wave and leads double probe 3-6 and E surface waves, leads
Synthesizer 3-7.
Specifically, every group of amplification storage device includes two amplification transmission cavity 3-4 arranged symmetrically；Four amplification transmission
Cavity 3-4 is evenly distributed in transmission cavity by planar array mode；Each amplification transmission cavity row is provided with spiral assembly type molybdenum
Copper backing 3-5 is welded with amplification chip on spiral assembly type molybdenum copper backing 3-5；The side of two groups of amplification storage devices is provided with
The middle part of one face E waveguide power divider 3-2, the first face the E waveguide power divider 3-2 and standard rectangular waveguide input port 3-1 connect
Logical, the both ends of the first face the E waveguide power divider 3-2 are connected separately with the 2nd face E waveguide power divider 3-11, amplification chip storage
Device is located in the 2nd face E waveguide power divider 3-11, and it is anti-that the first face E waveguide power divider 3-2 part input signal is divided into two-way constant amplitude
To the first signal, the phase angle of the first signal is θ all the way, and the phase angle of the first signal of another way is θ+π, and phase angle is θ's
After first signal passes through one the 2nd face E waveguide power divider 3-11, the first signal, which is divided into phase angle, isSecond signal and
Phase angle isSecond signal；This two-way second signal is put by two be located in the 2nd face E waveguide power divider 3-11
After amplification chip on big storage cabinet carries out power amplification, forming third signal that phase angle is ω+π and phase angle is ω's
Third signal；The first signal that phase angle is θ+π is by the way that after another 2nd face E waveguide power divider 3-11, the first signal is divided into
Phase angle isSecond signal and phase angle beSecond signal；This two-way second signal is by being located at the 2nd face E
After the amplification chip of amplification chip storage device in waveguide power divider 3-11 carries out power amplification, forms phase angle as the of ω
The third signal that three signals and phase angle are ω+π；Be fixedly installed respectively on every group of amplification chip storage device E surface wave lead-it is micro-
The double probe transformational structure 3-3 of band, the E surface wave leads the-double probe transformational structure 3-3 of micro-strip, for the third for being ω by phase angle
The third signal that signal and phase angle are ω+π carries out power combing；Two E surface waves lead-the double probe transformational structure 3-3 of micro-strip it
Between be additionally provided with the face E waveguide combiner 3-7, two E surface waves lead-the double probe transformational structure 3-3 of micro-strip pass through respectively E surface wave lead it is double
The signal of synthesis is sent into the face E waveguide combiner by probe 3-6, the face the E waveguide combiner 3-7, for two E surface waves are led-
Two paths of signals after the double probe transformational structure 3-3 progress power combings of micro-strip synthesizes signal all the way, and the signal after synthesis is by standard
Rectangular waveguide output port 3-8 output, and then realize the constant amplitude reverse phase power distribution and synthesis of four road signals.
When work, input signal is first by utilizing E surface wave in standard rectangular waveguide input port 3-1 input transmission cavity body
It leads power splitter 3-2 and input signal is divided into constant amplitude reverse phase two paths of signals, the phase angle of two paths of signals is respectively θ and θ+π, two-way letter
Number respectively by second face E waveguide power divider 3-11 after, which is further divided into four road signals, wherein two-way is believed
Number phase angle beIn addition the phase angle of two paths of signals isThe four roads signal pass through respectively the amplification chip on each road into
After row power amplification, four road signals of formation are still the same phases of two-way, and two-way reverse phase, wherein the phase angle of two paths of signals is ω,
In addition the phase angle of two paths of signals is ω+π；In four road signals, (phase angle is respectively ω and ω to the signal of every two-way opposite in phase
The two paths of signals of+π)-double probe transformational structure the 3-3 of micro-strip are led by E surface wave again, the two paths of signals of constant amplitude reverse phase is subjected to power
Synthesis, thus by the realization shape of the constant amplitude reverse phase power combing of the double probes of waveguide-micro-strip and waveguide E face constant amplitude reverse phase power distribution
Formula dexterously combines, and realizes the constant amplitude reverse phase power distribution and constant amplitude reverse phase power combing of input signal.Complete two-way function
Signal after rate synthesis, then four road signals are finally synthesized by signal all the way by the face E waveguide combiner 3-7, the letter after synthesis
Number by standard rectangular output waveguide port 3-8 export, and then realize four road signals constant amplitude reverse phase power distribution and synthesis.
In the present embodiment, partially installing capacitor component 3-9 is additionally provided on the amplification transmission cavity 3-4.
The transmission cavity body structure proposed using the present embodiment, shortens the output of the face E waveguide combiner 3-7 to the full extent
Standard rectangular waveguide input port 3-1 and standard rectangular output waveguide port 3-8 are placed in same horizontal line by path length,
It is easier to and the assembly of external microwave module and integrated, after improving power combing efficiency of transmission；Overall structure is that rule is long
Cube, each amplification transmission cavity 3-4 is that planar array is evenly distributed in lower transmission cavity, effectively increases heat dissipation area,
Radiator below cooperation transmission cavity improves radiating efficiency, ensure that the high reliability under high power capacity, drops simultaneously
Low assembly and debugging difficulty, improve production efficiency；It is double with waveguide E face that power distribution and synthesis use the face E wave guide power point
The technical solution that probe combines better than the traditional face H power distribution and synthesizer, and may be implemented in standard waveguide full frequency band
Broadband power synthesis and output；In addition to microstrip probe is again without other media material in entire transmission channel, access is greatly reduced
Insertion loss, improve transmission and combined coefficient；Meanwhile input and output port are all standard rectangular waveguide, outside can be straight
It connects and carries out three-dimensional more multiples extensions using waveguide power divider and synthesizer, be easily integrated.
The present embodiment substantially increases transmission cavity 2-1 using integration cutting and processing technology production transmission cavity 2-1
With the stickiness and leakproofness of cover board 2-2, and sealed batten is devised in two lateral edge wall of waveguide, in conjunction with waveguide along the close of wall two sides
Collect rigging screw 3-10, further improves the shielding properties of module；Meanwhile the assembling fitting surface of entire transmission cavity 2-1 is equal
For planar configuration, assembling process is simple, and technical requirements are low.
The present embodiment using transmission cavity 2-1 be used as spatial power combiner, with power capacity is big, transmission loss is small,
Perfect heat-dissipating, combined coefficient be high, compact-sized, assembly is simple, and easy processing, the advantages that size is small are closed for multichannel spatial power
At providing a kind of effective technological means.
Fig. 4 is the structure and embedded offset line cabling channel distribution map, the cover board 2-2 and transmission cavity 2-1 of cover board 2-2
Using integration cutting and processing technology, its adaptation and leakproofness ensure that, entire power combiner is only divided into transmission cavity
Body and cover board double-layer structure, waveguide cavity are all placed in transmission cavity, and cover board is slab design, compact-sized, easy to process, are subtracted
Small build-up tolerance, improves productibility, simultaneously as cavity with cover board there is height to be closely bonded, therefore increases greatly
The strong electromagnetic leakage shield effectiveness of module；The one side of the cover board 2-2 towards transmission cavity 2-1 are panelized structure simultaneously,
Processing and fabricating is simple, and the cover board lateral surface has carried out Embedded design for the direct current biasing device cabling of amplification chip.Such as
Shown in Fig. 4, it is provided with positive pressure biasing cabling channel 4-1, negative pressure biasing cabling channel 4-2 and three-dimensional offset line on cover board lateral surface and passes
Positive pressure offset line is placed in positive pressure biasing cabling channel 4-1 by defeated hole 4-3, and negative pressure offset line is placed in negative pressure biasing cabling channel 4-2
Interior, shield effectiveness is good, improves the Immunity Performance of energized lines, and positive pressure and negative pressure offset line are placed in different cabling channels
In, the interference between positive and negative current voltage is effectively prevented, the Electro Magnetic Compatibility of module itself is substantially increased.
Millimeter wave narrow side power splitter disclosed in the present embodiment, using novel waveguide transmission structure, combined coefficient is high, work frequency
Bandwidth, radiating efficiency is high, and productibility is strong, strong antijamming capability, is easy to extend integrated.
The present embodiment also provides a kind of power combining methods, and this method is based on millimeter wave narrow side power splitter as described above
It realizes, method includes the following steps:
Input signal is entered in cavity by transmitting the standard rectangular waveguide input port 3-1 of cavity, by the face E wave guide power
The first signal for dividing device 3-2 to be divided into two-way constant amplitude reverse phase, phase angle is respectively θ and θ+π；
The first signal of two-way after second face E waveguide power divider 3-11, is further divided into four tunnels second letter respectively
Number, wherein the phase angle of two-way second signal isIn addition the phase angle of two paths of signals is
After four tunnel second signals carry out power amplification by the amplification chip on each road respectively, four tunnel third signals of formation are still
Old is the same phase of two-way, and two-way reverse phase, wherein the phase angle of two-way third signal is ω, and in addition the phase angle of two-way third signal is
ω+π；
In four tunnel third signals, (phase angle is respectively the two-way letter of ω and ω+π to the third signal of every two-way opposite in phase
Number)-double probe transformational structure the 3-3 of micro-strip are led by E surface wave again, the two-way third signal of constant amplitude reverse phase is subjected to first time power
Synthesis leads double probes by E surface wave and the signal after first time power combing is sent into the face E waveguide combiner；
Signal after completing the first power combing of two-way, then finally synthesized four road signals by the face E waveguide combiner 3-7
For signal all the way, the signal after synthesis is exported by standard rectangular output waveguide port 3-8, and then realizes that the constant amplitude of four road signals is anti-
Phase power distribution and synthesis.
It can be seen from the above description that disclosure the above embodiments realize following technical effect:
First, in terms of work bandwidth, the synthesizer that the disclosure proposes is led double using the face E waveguide power divider and E surface wave
Probe is as power distribution and synthesis unit, and better than the traditional face H power distribution and synthesizer, working frequency range can directly cover mark
The corresponding full operating frequency range of Quasi-Waveguide.
Second, in terms of radiating efficiency, the transmission cavity of the disclosure is designed as regular rectangular parallelepiped structure, uses planar array
Column distribution mode arranges that amplification transmission cavity, heat source are evenly distributed, and the amplifying unit of inside cavity is all placed in cavity bottom, cavity
Bottom is provided with high-efficiency radiator, and heat can be transmitted directly to substantially increase conjunction with the close-connected radiator of lower chamber
The radiating efficiency grown up to be a useful person, while amplification chip being welded on molybdenum copper pad using eutectic Welding, then it is screwed on lower transmission
In cavity, assembly and maintenance efficiency are improved, and increase heat conduction efficiency.
Third, in terms of combined coefficient, the input terminal of the transmission cavity of the disclosure and output end waveguide are placed in same water
On horizontal line, the face E waveguide power divider and the double probes of waveguide E face is utilized as power distribution and synthesis unit, optimization layout will letter
Number synthesis output channel carried out most shortization processing, meanwhile, in transmission channel other than microstrip probe, then without other media material
Material, greatly reduces path loss, improves the synthesis and efficiency of transmission of signal.
4th, in terms of productibility, the disclosure uses integration cutting and processing technology production transmission cavity and lid
Plate, entire power combiner is only divided into lower transmission cavity and upper cover plate double-layer structure, compact-sized, easy to process, reduces dress
With tolerance, the assembling fitting surface of total is planar configuration, and assembling process is simple, and technical requirements are low, is substantially increased
Its productibility.
5th, for the problem of power combiner bias circuit, the direct current biasing device of the disclosure uses and microwave
The coplanar form of circuit, positive pressure are placed in different cabling channels from negative pressure offset line, effectively prevent between positive and negative current voltage
Interference, substantially increase the Electro Magnetic Compatibility of module itself, and use mutual-inserting type connector and it is extraneous interconnect, be convenient for module
Replacement and repair, greatly reduce processing and the assembly difficulty of structure, can meet broadband, high-power, small size and height can
By the technical requirements of property, a kind of effective technological means is provided for microwave and millimeter wave space power synthesis.
6th, it is regular rectangular shape structure that the disclosure proposed, which attacks point device, and input and output port are all standard rectangular waveguide,
Outside directly can carry out three-dimensional multiple using waveguide power divider and synthesizer and extend, and it is even more to be directly extended to 8 tunnels, 16 tunnels,
Form is simple, is easily integrated.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (9)
1. a kind of combined type millimeter wave narrow side power splitter, characterized in that including for synthesizing and exporting in standard waveguide full frequency band
The transmission cavity of broadband power, the cover board being arranged at the top of transmission cavity and the radiator that transmission cavity bottom is set.
2. combined type millimeter wave narrow side power splitter according to claim 1, characterized in that the transmission cavity is rectangle knot
The two sides of structure, the transmission cavity are provided with standard rectangular waveguide input port and standard rectangular output waveguide port, and standard
Rectangular waveguide input port and standard rectangular output waveguide port are located in same horizontal line.
3. combined type millimeter wave narrow side power splitter according to claim 2, characterized in that the standard rectangular waveguide input
Sealed batten is fixedly installed on the outer lateral edge wall of port and standard rectangular output waveguide port.
4. combined type millimeter wave narrow side power splitter according to claim 2, characterized in that close to mark in the transmission cavity body
The side that quasi-retangular wave leads input port is provided with the input signal point for will input by standard rectangular waveguide input port
For the first face E waveguide power divider of the first signal of two-way constant amplitude reverse phase, the both ends of the first face E waveguide power divider connect respectively
It is connected to the 2nd face E waveguide power divider of the second signal for the first signal to be divided into two-way constant amplitude reverse phase.
5. combined type millimeter wave narrow side power splitter according to claim 4, characterized in that be provided in the transmission cavity body
Four transmit cavity by the equally distributed amplification of planar array mode, and four amplification transmission cavity bodies, which are located at two the 2nd E surface waves, leads
Between power splitter, it is provided with spiral assembly type molybdenum copper backing on each amplification transmission cavity, is welded with and puts on spiral assembly type molybdenum copper backing
Large chip, the amplification chip, the second signal power amplification for exporting the 2nd face E waveguide power divider is at third signal.
6. combined type millimeter wave narrow side power splitter according to claim 5, characterized in that two are located in same horizontal line
Amplification transmission cavity on be further fixedly arranged on E surface wave and lead-double probe the transformational structures of micro-strip, the E surface wave leads the-double probes of micro-strip
The third signal of transformational structure, the two-way constant amplitude reverse phase for generating two amplification chips synthesizes signal all the way.
7. combined type millimeter wave narrow side power splitter according to claim 6, characterized in that also set up in the transmission cavity body
Have the face an E waveguide combiner, the face E waveguide combiner be located at two E surface waves lead-the double probe transformational structures of micro-strip between, two E
Surface wave leads-and the double probe transformational structures of micro-strip pass through E surface wave respectively and lead double probes the signal of synthesis is sent into the face E waveguide combiner,
Signal, the signal after synthesis are defeated by standard rectangular waveguide all the way by the two paths of signals received synthesis for the face E waveguide combiner
Exit port output.
8. combined type millimeter wave narrow side power splitter according to claim 1, characterized in that the cover board direction transmission cavity
One side be panelized structure, another side be provided with the positive pressure for placing positive crimping biasing cabling channel, for placing negative pressure line
Negative pressure biasing cabling channel and three-dimensional offset line transmission hole.
9. a kind of power combining methods, real based on combined type millimeter wave narrow side power splitter of any of claims 1-8
It is existing, characterized in that method includes the following steps:
Input signal is entered in cavity by transmitting the standard rectangular waveguide input port of cavity, by the face E waveguide power divider quilt
It is divided into the first signal of two-way constant amplitude reverse phase；
The first signal of two-way after second face E waveguide power divider, is further divided into four tunnel second signals, wherein two respectively
The same phase of road second signal constant amplitude, two-way second signal constant amplitude reverse phase；
After four tunnel second signals carry out power amplification by amplification chip respectively, four tunnel third signals of formation, wherein two-way the
Three signal phases are identical, and two-way third signal phase is opposite；
In four tunnel third signals, the third signal of every two-way opposite in phase leads the-double probe transformational structures of micro-strip by E surface wave, will
The two-way third signal of constant amplitude reverse phase carries out first time power combing, and leading double probes by E surface wave will be after first time power combing
Signal be sent into the face E waveguide combiner；
The signal after two-way first time power combing is synthesized into signal all the way by the face E waveguide combiner, the signal after synthesis
It is exported by standard rectangular output waveguide port, realizes the constant amplitude reverse phase power distribution and synthesis of four road signals.
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