CN108172962A - A kind of broadband circular waveguide directional coupler for microwave power measurement - Google Patents
A kind of broadband circular waveguide directional coupler for microwave power measurement Download PDFInfo
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- CN108172962A CN108172962A CN201711390327.4A CN201711390327A CN108172962A CN 108172962 A CN108172962 A CN 108172962A CN 201711390327 A CN201711390327 A CN 201711390327A CN 108172962 A CN108172962 A CN 108172962A
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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
- H01P5/181—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 hollow waveguides
- H01P5/182—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 hollow waveguides the waveguides being arranged in parallel
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/24—Terminating devices
- H01P1/26—Dissipative terminations
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Abstract
A kind of broadband circular waveguide directional coupler for microwave power measurement of the disclosure of the invention, is related to microwave and millimeter wave device arts.Compared with tradition crosses mould circular waveguide directional coupler, the present invention is novel to be introduced into the nonstandard standard rectangular waveguide for crossing mould rectangular waveguide tradition is replaced to cross in mould circular waveguide directional coupler.Change the cut-off wave number of its basic mode TE10 moulds by adjusting the nonstandard size for crossing mould rectangular waveguide, make the nonstandard cut-off wave number for crossing mould rectangular waveguide basic mode TE10 moulds identical with the cut-off wave number for crossing operating mode TEmn moulds in mould circular waveguide, in this way so that propagation (phase) constant of TE10 moulds is identical with the propagation constant of operating mode TEmn at arbitrary frequency point, so that the forward-wave of coupler can meet superposition condition in the same direction at arbitrary frequency point, achieve the purpose that propagate through mould circular waveguide directional coupler bandwidth of operation and reduce to fluctuate with the interior degree of coupling.
Description
Technical field
The present invention relates to microwave and millimeter wave device arts, specifically a kind of to propagate, measure gyrotron traveling wave tube, speed
Adjust the High-Power Microwave of the High-Power Microwaves Millimeter-Wave Sources such as pipe output, the Circular waveguides of millimeter wave.
Background technology
Directional coupler be it is a kind of be widely used in microwave, millimeter wave measurement field microwave and millimeter wave device, its master
It acts on and exactly the high-power signal transmitted in microwave, millimeter-wave systems accurately being sampled, it is micro- to be coupled out sub-fraction
Wave, millimeter-wave signal, will pass through oscillograph, in terms of small-power, the measuring instruments such as frequency spectrograph are to the high-power letter that is transmitted in system
Number carry out temporal envelope monitoring, power measurement and spectrum measurement etc..
Most of traditional High Power Microwave System is using rectangular waveguide as transmission line, matched directional coupler
Generally all use Rectangular Waveguide Structure.But as a kind of higher microwave and millimeter wave source of output power magnitude-gyrotron is sent out
Exhibition starts largely to use microwave and millimeter wave system of the circular waveguide as transmission line in engineer application.In order to the microwave millimeter
The high power signals transmitted in wave system system are sampled measurement, a kind of traditional mould Circular waveguides directional couple excessively occur
Device.Cross that mould Circular waveguides directional coupler generally comprises a main waveguide (crossing mould circular waveguide) and a complementary wave leads (standard square
Shape waveguide), main waveguide is connected between being led with complementary wave by coupling aperture.Its operation principle is：When injection microwave, millimeter wave letter
During number by main waveguide, most of energy flows to main waveguide output end, has sub-fraction microwave, millimeter-wave signal to pass through coupling
Hole couples and flows to complementary wave and lead；And it is forward wave (with main waveguide microwave millimeter wave transmission direction that the energy stream led in complementary wave, which is divided into,
It is identical) and backward-wave (opposite with main waveguide microwave millimeter wave transmission direction).In being led by measuring directional coupler complementary wave just
Two important technologies that input energy into wave and reversed wave energy and main waveguide can calculate directional coupler refer to
Mark：The degree of coupling and isolation.
However unlike Rectangular Waveguide Structure directional coupler：It is crossed in mould Circular waveguides directional coupler in tradition
Microwave, the millimeter wave operating mode propagated in main waveguide (0) to be led in (rectangular waveguide) with complementary wave do not propagate by TEmn moulds, wherein n
The phase constant of operating mode (TE10 moulds) differ greatly, tradition is caused to cross mould circular waveguide directional coupler work frequency in this way
With narrow, it is difficult to realize broadband high directivity coupling, while coupler length is longer.To realize the coupling of broadband high directivity, complementary wave
It leads and bandwidth of operation is generally promoted using nonstandard mould rectangular waveguide of crossing, shorten the length of coupler.However nonstandard mould rectangle excessively
Waveguide uses, the complementary wave of coupler lead it is interior will encourage high-order mode (TEmn, wherein m ＞ 1), the higher order mode being primarily present is
TE20, TE30 etc..Traditional single armed directional coupler (only being led there are one complementary wave) is realizes the positive degree of coupling and reverse coupled degree
It measures, it is necessary to the nonstandard rectangular output mouth of forward and reverse be faded into standard rectangular port, then connect standard rectangular waveguide
Port converter carries out electromagnetic property measurement.It, will be but since high-order mode can not be transmitted in standard rectangular waveguide
Nonstandard rectangle complementary wave leads interior roundtrip；And high-order mode (such as TE20) content is higher, will influence complementary wave and leads interior operating mode
The transmission of (TE10 moulds), easily causes larger measurement error.
Invention content
In order to overcome tradition cross mould circular waveguide directional coupler working band relatively narrow (relative bandwidth is typically less than 10%),
It is poor with interior degree of coupling fluctuation larger (degree of coupling fluctuation is more than 5dB between frequency point in working band), directionality (isolation)
(its directionality of working band is less than 20dB) and nonstandard complementary wave lead influence of the interior high-order mode to measurement result.The present invention proposes
One kind is novel to cross mould circular waveguide braodband directional coupler technical solution.
The novel mould circular waveguide braodband directional coupler of crossing of the present invention is added using arm structure in nonstandard complementary wave is led
Add strip absorbing material, and side output port addition double-wedge absorbing load is led in complementary wave, so as to fulfill the object of the invention.
Thus technical solution of the present invention be a kind of broadband circular waveguide directional coupler for microwave power measurement, the directional coupler
Including：Cross mould circular waveguide (i.e. main waveguide), both arms complementary wave is led；The both arms complementary wave is led leads and lower wall complementary wave including upper arm complementary wave
Lead, upper arm complementary wave is led or lower wall complementary wave lead including：Non-standard rectangular waveguide, is absorbed and is born two nonstandard mould rectangle E waveguide bends excessively
It carries；Described two nonstandard mould rectangle E waveguide bends of crossing are respectively arranged at the both ends of non-standard rectangular waveguide, and with non-standard rectangle
Waveguide connects, one of them nonstandard mould rectangle E waveguide bend of crossing connects absorbing load；The non-standard rectangle that the upper arm complementary wave is led
The non-standard rectangular waveguide that waveguide and lower wall complementary wave are led was respectively arranged at mould circular waveguide about the symmetrical both sides of central axis
It is (180 ° are symmetrical) and parallel with mould circular waveguide microwave transmission direction excessively, between non-standard rectangular waveguide and excessively mould circular waveguide
It is connected by coupling circular hole.
Further, the nonstandard bending angle for crossing the curved rectangular waveguides of mould E is 90 degree, and bending radius is not less than nonstandard square
2 times of shape Narrow Wall of Waveguide edge lengths.The nonstandard effect for crossing the curved rectangular waveguides of mould E is to change the direction of propagation that complementary wave leads middle energy,
The convenient connection with external detection system；It just can guarantee that its standing-wave ratio is less than 1.05 in entire working band in this way.
Further, the non-standard rectangular waveguide and the Coupled Circle crossed between mould circular waveguide are two rows of symmetrical circles
Hole, circular hole orientation in main waveguide microwave, millimeter wave transmission direction it is consistent；The radius and height of coupling aperture are by fixed
It is determined to the degree of coupling of coupler, the spacing between coupling aperture and coupling aperture is by crossing the operating mode in mould circular waveguide, work frequency
Rate determines that the number of coupling aperture is determined by bandwidth of operation.
Further, the absorbing load is rectangle, and using metal material, inside is absorbing material for outside, and wave is inhaled in inside
Material is double-wedge.Purpose is that the energy reflection of microwave, millimeter wave is reduced to increase the suction corrugated of material product, improves complementary wave
Lead bandwidth of operation and job stability.
Further, far from setting strip mould on the waveguide inner wall for crossing mould circular waveguide side in the non-standard rectangular waveguide
Formula inhibition/absorption plant, bar like pattern inhibition/absorption plant installation direction is consistent with main waveguide, secondary wave guide direction, strip mould
Formula inhibition/absorption plant length is led unanimously with complementary wave, and the thickness of bar like pattern inhibition/absorption plant is by suppression mode, inhibition journey
Degree, degree of coupling fluctuation size determine.
The absorbing material is generally the solid materials such as silicon carbide, beryllium oxide, graphene, and the metal material is generally
Copper, aluminium etc..
Design principle：
Using the mode of porous coupling and Phase Stacking principle, the spacing between coupling aperture is calculated, is made during complementary wave leads
Forward-wave meets superposition condition, backward-wave in the same direction and meets reversed cancellation conditions, improves the work band of mould circular waveguide orientation coupling device
Wide and isolation, reduces it and is fluctuated with the interior degree of coupling.
Phase Stacking principle is as follows：
In the case of equidistant coupling, the phase of forward-wave and backward-wave：
In formula, spacing of the S between coupling aperture, β1Phase for operating mode TEmn moulds in main waveguide (crossing mould circular waveguide)
Constant, β2The phase constant of operating mode in (nonstandard rectangular waveguide) TE10 moulds is led for complementary wave；
As long as
The condition of forward-wave in-phase stacking can be met.
As long as
The condition of backward-wave reverse phase counteracting can be met.
Designing points：
2nd, the condition offset according to backward-wave reverse phase in formula (1) and formula (3) can be obtained and meet the counteracting of backward-wave reverse phase
The coupling aperture interval S of condition.
3rd, electric field distribution design bar like pattern inhibition/absorption plant of interior high-order mode is led according to complementary wave so that high-order mode declines
Subtract and decay much larger than secondary dominant waveguide mode.
Compared with tradition crosses mould circular waveguide directional coupler, the novel introducing of the present invention is nonstandard to cross mould rectangular waveguide to replace passing
The standard rectangular waveguide united in mould circular waveguide directional coupler.By adjust it is nonstandard cross mould rectangular waveguide size come
Change the cut-off wave number of its basic mode TE10 moulds, make the nonstandard cut-off wave number for crossing mould rectangular waveguide basic mode TE10 moulds with crossing mould circle wave
The cut-off wave number for leading middle operating mode TEmn moulds is identical, so that the propagation (phase) of TE10 moulds is normal at arbitrary frequency point
Number is identical with the propagation constant of operating mode TEmn, so that the forward-wave of coupler can meet at arbitrary frequency point
Superposition condition in the same direction reaches and propagates through mould circular waveguide directional coupler bandwidth of operation and reduce the mesh that is fluctuated with the interior degree of coupling
's.Complementary wave is led using both arms coupled structure, inhibits TEmn by leading interior addition bar like pattern inhibition/absorption plant in complementary wave
The generation and transmission of (m ＞ 1) pattern；Meanwhile double-wedge absorbing load is installed in secondary output waveguide port side, it reduces positive
Influencing each other between coupling port and reverse coupled port, and then reduce directional coupler measurement error.The present invention have with
Under major advantage：1. working band is wide；2. isolation is high in working band；3. degree of coupling fluctuation is small in working band.
Description of the drawings
Fig. 1 is novel to cross mould circular waveguide directional coupler axial direction schematic diagram；
Fig. 2 is novel to cross mould circular waveguide braodband directional coupler sectional view；
Fig. 3 double-wedges microwave, millimeter wave absorbing load sectional view；
Fig. 4 is novel to be crossed mould circular waveguide braodband directional coupler addition bar like pattern inhibition/absorption plant and is not added with strip
The degree of coupling of mode suppression/absorption plant；
Fig. 5 is novel to be crossed mould circular waveguide braodband directional coupler addition bar like pattern inhibition/absorption plant and is not added with strip
Complementary wave leads interior TE20 moulds transmission characteristic parameter figure during mode suppression/absorption plant；
The novel reflection parameters for crossing mould circular waveguide braodband directional coupler of Fig. 6 and configured transmission figure；
Fig. 7 is the novel degree of coupling and isolation for crossing mould circular waveguide braodband directional coupler of emulation gained.
Wherein：Number 1 represented mould circular waveguide (main waveguide) entry port in Fig. 1,2,3；2, which represent nonstandard, crosses mould rectangle
E waveguide bends (backward-wave)；3 represent double-wedge microwave, millimeter wave absorbing load；4, which represent nonstandard, crosses mould rectangle E waveguide bends (forward direction
Wave)；5 represented mould circular waveguide (main waveguide) entry port；6 represent non-standard rectangular waveguide (complementary wave is led)；7 coupling circular holes；8
Bar like pattern inhibition/absorption plant；9 double-wedge absorbent structures
Specific embodiment
A kind of broadband circular waveguide directional coupler for microwave power measurement, the directional coupler include：Cross mould circle wave
Lead (1) (i.e. main waveguide), both arms complementary wave is led；The both arms complementary wave is led to lead including upper arm complementary wave and be led with lower wall complementary wave, upper arm complementary wave
Lead or lower wall complementary wave lead including：Non-standard rectangular waveguide (6), two nonstandard mould rectangle E waveguide bends (2), absorbing loads (3) excessively；
Described two nonstandard mould rectangle E waveguide bends of crossing are respectively arranged at the both ends of non-standard rectangular waveguide, and with non-standard rectangular waveguide
Connection, one of them nonstandard mould rectangle E waveguide bend of crossing connect absorbing load (3)；The nonstandard quasi-retangular wave that the upper arm complementary wave is led
The non-standard rectangular waveguide led with lower wall complementary wave is led to be respectively arranged at the both sides of mould circular waveguide and passed with crossing mould circular waveguide microwave
Defeated direction is parallel, and non-standard rectangular waveguide is connected with crossing between mould circular waveguide by coupling circular hole；The upper arm complementary wave lead and under
Absorbing load during wall complementary wave is led is installed on not homonymy.The nonstandard bending angle for crossing the curved rectangular waveguides of mould E is 90 degree, curved
Bilge radius is not less than 2 times of nonstandard rectangular waveguide narrow side length.The nonstandard effect for crossing the curved rectangular waveguides of mould E is to change complementary wave
Lead the direction of propagation of middle energy, the convenient connection with external detection system；It just can guarantee its standing-wave ratio in entire work frequency in this way
Band is interior to be less than 1.05.The non-standard rectangular waveguide and the Coupled Circle crossed between mould circular waveguide are two rows of symmetrical circular holes, circle
Hole orientation in main waveguide microwave, millimeter wave transmission direction it is consistent；The radius and height of coupling aperture are by directional couple
The degree of coupling of device determines that the spacing between coupling aperture and coupling aperture is true by crossing the operating mode in mould circular waveguide, working frequency
Fixed, the number of coupling aperture is determined by bandwidth of operation.The absorbing load is rectangle, and outside is using metal material, and wave is is inhaled in inside
Material, internal absorbing material are double-wedge.Purpose is to increase the suction corrugated of material product, reduces the energy of microwave, millimeter wave
Reflection improves complementary wave and leads bandwidth of operation and job stability.Far from mould circular waveguide side excessively in the non-standard rectangular waveguide
Bar like pattern inhibition/absorption plant (8), bar like pattern inhibition/absorption plant installation direction and main wave are set on waveguide inner wall
Lead, secondary wave guide direction it is consistent, bar like pattern inhibition/absorption plant length is led unanimously with complementary wave, and bar like pattern inhibition/absorption fills
The thickness put is determined by suppression mode, inhibition level, degree of coupling fluctuation size.
It is real that Ka wave bands, the novel design for crossing mould circular waveguide braodband directional coupler of TE01 moulds are operated in reference to one
The present invention is further elaborated for example and attached drawing：
Ka wave bands are novel to cross mould circular waveguide braodband directional coupler technical requirement：
Main waveguide work pattern：TE01 moulds；
Working frequency range：Ka wave bands (26.5GHz-40GHz)；
Non-standard rectangular waveguide broadside size：13.04 millimeters, narrow side size：3.556 millimeter
The degree of coupling：-48dB；Isolation (directionality)：25dB；It is fluctuated with the interior degree of coupling：≤±0.5dB
Wherein：It crosses mould and crosses mould circular waveguide (main waveguide) (1)：16 millimeters of radius, length are 240 millimeters；In order to make orientation coupling
Clutch can effectively work in entire Ka wave bands, and the quantity for selecting coupling aperture is 32,1 millimeter of pore radius, 1 millimeter of hole height,
2.84 millimeters of pitch of holes；It is nonstandard to cross mould rectangular waveguide (complementary wave is led)：13.04 millimeters of broadside size, 3.556 millimeters of narrow side size；
It is nonstandard to cross mould rectangle E waveguide bends：8 millimeters of bending radius；Double-wedge microwave, millimeter wave absorbing load：90 millimeters of tapered length；
Bar like pattern inhibition/absorption plant：240 millimeters of length, 0.4 millimeter of thickness, 1 millimeter of width.
Fig. 4 is novel mould circular waveguide braodband directional coupler addition bar like pattern inhibition/absorption plant of crossing with being not added with item
The degree of coupling comparison diagram of shape mode suppression/absorption plant.The degree of coupling characterized mould circular waveguide by coupling Small aperture coupling to rectangle
The energy size of forward-wave in waveguide.As seen from the figure：It is not added with the coupling of bar like pattern inhibition/absorption plant directional coupler
Right about -46dB, fluctuation range are about ± 1.5dB；Add the coupling of bar like pattern inhibition/absorption plant directional coupler
Degree is about -48.6dB, and fluctuation range is about ± 0.2dB.It therefore can be effective by adding bar like pattern inhibition/absorption plant
Reduce the fluctuation of the directional coupler degree of coupling.The novel directional coupler of the design can effectively realize design object, with interior coupling
Right fluctuation is better than design initial target.
Fig. 5 is novel mould circular waveguide braodband directional coupler addition bar like pattern inhibition/absorption plant of crossing with being not added with item
Complementary wave leads interior TE20 moulds transmission characteristic parameter figure during shape mode suppression/absorption plant.As seen from the figure, addition bar like pattern inhibit/
The directional coupler complementary wave of absorption plant leads interior TE20 moulds forward-wave (about -75dB) ratio and is not added with bar like pattern inhibition/suction
It is about 25dB, therefore bar like pattern presses down that the directional coupler complementary wave of receiving apparatus, which leads interior TE20 mould forward-waves (- 50dB) attenuation,
System/absorption plant can effectively absorb complementary wave and lead interior TE20 moulds.
Fig. 6 is the novel reflection parameters (S11) and configured transmission for crossing mould circular waveguide braodband directional coupler of emulation gained
(S21).S11 expressions are reflected back the energy of microwave entry port and the logarithm ratio of input energy, and it is defeated that S21 expressions are transferred to microwave
The energy of exit port and the logarithm ratio of input port energy generally require reflection parameters to be less than -30dB, transmission in engineer application
Parameter is more than -0.2dB.It will be appreciated from fig. 6 that the S11 parameters of directional coupler are less than -55dB in this emulation, configured transmission is big
In -0.02dB, simulation result fully meets job applications target.
Fig. 7 is the novel degree of coupling and isolation for crossing mould circular waveguide braodband directional coupler of emulation gained.As seen from the figure should
The novel degree of coupling for crossing mould circular waveguide braodband directional coupler in working frequency range 26.5-40GHz is about -48.6dB, with interior coupling
Right fluctuation is less than ± 0.2dB, and isolation is more than 25dB, meets design objective requirement.
Above example is only of the invention novel for convenience of description, and mould circular waveguide is crossed present invention may apply to other frequency ranges
The different modes such as TE01-TE10 (rectangular waveguide), TE21-TE10, TE11-TE10, different frequency range directional coupler on, coupling
The spacing closed between hole is determined by corresponding frequency range and operating mode.
Claims (5)
1. a kind of broadband circular waveguide directional coupler for microwave power measurement, which includes：Cross mould circular waveguide
(1), both arms complementary wave is led；The both arms complementary wave is led to lead including upper arm complementary wave and be led with lower wall complementary wave, and upper arm complementary wave is led or lower wall complementary wave
Lead including：Non-standard rectangular waveguide (6), two nonstandard mould rectangle E waveguide bends (2), absorbing loads (3) excessively；It is described two nonstandard
It crosses mould rectangle E waveguide bends and is respectively arranged at the both ends of non-standard rectangular waveguide, and connect with non-standard rectangular waveguide, one of them
It is nonstandard to cross mould rectangle E waveguide bends connection absorbing load (3)；The non-standard rectangular waveguide and lower wall complementary wave that the upper arm complementary wave is led are led
Non-standard rectangular waveguide be respectively arranged at mould circular waveguide about the symmetrical both sides of central axis and with crossing mould circular waveguide microwave
Transmission direction is parallel, and non-standard rectangular waveguide is connected with crossing between mould circular waveguide by coupling circular hole.
2. a kind of broadband circular waveguide directional coupler for microwave power measurement as described in claim 1, it is characterised in that
The nonstandard bending angle for crossing the curved rectangular waveguides of mould E is 90 degree, and bending radius is not less than the 2 of nonstandard rectangular waveguide narrow side length
Times.
3. a kind of broadband circular waveguide directional coupler for microwave power measurement as described in claim 1, it is characterised in that
The non-standard rectangular waveguide and the Coupled Circle crossed between mould circular waveguide are two rows of symmetrical circular holes, circular hole orientation and master
Microwave, millimeter wave transmission direction in waveguide is consistent；The radius of coupling aperture and height determine by the degree of coupling of directional coupler,
Spacing between coupling aperture and coupling aperture is by crossing the operating mode in mould circular waveguide, working frequency determines, the number of coupling aperture by
Bandwidth of operation determines.
4. a kind of broadband circular waveguide directional coupler for microwave power measurement as described in claim 1,2 or 3, feature
It is the absorbing load for rectangle, using metal material, inside is absorbing material for outside, and internal absorbing material is double-wedge.
5. a kind of broadband circular waveguide directional coupler for microwave power measurement as described in claim 1,2 or 3, feature
It is in the non-standard rectangular waveguide far from setting bar like pattern inhibition on the waveguide inner wall for crossing mould circular waveguide side/absorption dress
It puts, bar like pattern inhibition/absorption plant installation direction is consistent with main waveguide, secondary wave guide direction, bar like pattern inhibition/absorption plant
Length is led unanimously with complementary wave, and the thickness of bar like pattern inhibition/absorption plant is fluctuated greatly by suppression mode, inhibition level, the degree of coupling
Small decision.
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Cited By (7)
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| CN109638403A (en) * | 2019-01-15 | 2019-04-16 | 电子科技大学 | A kind of bimodulus compact crosses mould directional coupler |
| CN109786920A (en) * | 2019-03-25 | 2019-05-21 | 北京无线电测量研究所 | A kind of circular polarisation TE21Mode coupler structure |
| CN110444847A (en) * | 2019-08-07 | 2019-11-12 | 深圳大学 | A kind of high-order based on multiple-limb waveguide crosses mould power coupler |
| CN110677137A (en) * | 2019-09-17 | 2020-01-10 | 淮安信息职业技术学院 | Broadband miniaturization forward wave directional coupler circuit unit topological structure |
| CN112103602A (en) * | 2020-11-05 | 2020-12-18 | 中国电子科技集团公司第九研究所 | Broadband high-frequency Faraday isolator |
| CN112597657A (en) * | 2020-12-29 | 2021-04-02 | 北京无线电计量测试研究所 | Method for designing millimeter wave S parameter transmission amplitude standard device |
| CN113437464A (en) * | 2021-08-27 | 2021-09-24 | 成都雷电微晶科技有限公司 | Double-waveguide/multi-waveguide channel structure working in W waveband and TR module |
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| CN109638403A (en) * | 2019-01-15 | 2019-04-16 | 电子科技大学 | A kind of bimodulus compact crosses mould directional coupler |
| CN109786920A (en) * | 2019-03-25 | 2019-05-21 | 北京无线电测量研究所 | A kind of circular polarisation TE21Mode coupler structure |
| CN110444847A (en) * | 2019-08-07 | 2019-11-12 | 深圳大学 | A kind of high-order based on multiple-limb waveguide crosses mould power coupler |
| CN110444847B (en) * | 2019-08-07 | 2021-07-20 | 深圳大学 | High-order over-mode power coupler based on multi-branch waveguide |
| CN110677137A (en) * | 2019-09-17 | 2020-01-10 | 淮安信息职业技术学院 | Broadband miniaturization forward wave directional coupler circuit unit topological structure |
| CN110677137B (en) * | 2019-09-17 | 2023-06-23 | 江苏电子信息职业学院 | Broadband miniaturized forward wave directional coupler circuit unit topological structure |
| CN112103602A (en) * | 2020-11-05 | 2020-12-18 | 中国电子科技集团公司第九研究所 | Broadband high-frequency Faraday isolator |
| CN112597657A (en) * | 2020-12-29 | 2021-04-02 | 北京无线电计量测试研究所 | Method for designing millimeter wave S parameter transmission amplitude standard device |
| CN112597657B (en) * | 2020-12-29 | 2024-04-16 | 北京无线电计量测试研究所 | Millimeter wave S parameter transmission amplitude standard design method |
| CN113437464A (en) * | 2021-08-27 | 2021-09-24 | 成都雷电微晶科技有限公司 | Double-waveguide/multi-waveguide channel structure working in W waveband and TR module |
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