CN107394329A - Ka wave band micro-strip waveguide transitions circuits - Google Patents
Ka wave band micro-strip waveguide transitions circuits Download PDFInfo
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- CN107394329A CN107394329A CN201710479958.7A CN201710479958A CN107394329A CN 107394329 A CN107394329 A CN 107394329A CN 201710479958 A CN201710479958 A CN 201710479958A CN 107394329 A CN107394329 A CN 107394329A
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- 230000007704 transition Effects 0.000 title claims abstract description 37
- 239000000523 sample Substances 0.000 claims description 12
- 239000000758 substrate Substances 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 7
- 229910000679 solder Inorganic materials 0.000 claims description 4
- 230000037431 insertion Effects 0.000 abstract description 6
- 238000003780 insertion Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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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
- H01P5/08—Coupling devices of the waveguide type for linking dissimilar lines or devices
- H01P5/10—Coupling devices of the waveguide type for linking dissimilar lines or devices for coupling balanced lines or devices with unbalanced lines or devices
- H01P5/107—Hollow-waveguide/strip-line transitions
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Abstract
The present invention relates to millimeter-wave technology field, discloses a kind of Ka wave bands micro-strip waveguide transitions circuit, including：Micro belt board, square wave guide cavity and microstrip circuit board slot；Wherein, the micro belt board is placed in the microstrip circuit board slot, and the broadside of the waveguide mouth perpendicular to the square wave guide cavity stretches into square wave guide cavity；Described micro belt board one end is input port, and the other end stretches into the rectangular waveguide intracavitary.The Ka wave band micro-strip waveguide transitions circuits have the following advantages that：1) broadband, Ka frequency range 12GHz bandwidth is covered；2) low-loss transition, Insertion Loss is less than 0.4dB in full frequency band；3) it is simple in construction, compact, it is easily integrated.
Description
Technical field
The present invention relates to millimeter-wave technology field, in particular it relates to a kind of Ka wave bands micro-strip waveguide transitions circuit.
Background technology
In modern millimeter-wave technology field, microstrip line is easy to the characteristics of integrated linear as highly important transmission with it
Formula.But with the continuous research and development in high band field, microstrip line can not meet the requirement for low transmission loss.Cause
This metal waveguide has been increasingly becoming the principal mode of millimeter-wave systems use, and as the mistake between microstrip line and metal waveguide
Cross, micro-strip-waveguide transitions circuit undoubtedly becomes the popular research field of comparison.It is simple in construction, Insertion Loss is small, standing-wave ratio is small,
The features such as broadband is the most basic requirement to such product.
Conventional micro-strip-waveguide transitions mode has ridge waveguide conversion, the conversion of transition fin line, coupling probe to change three kinds.
Millimeter wave frequency band, microstrip probe conversion in coupling probe conversion regime because its in the advantage of physical dimension, Insertion Loss etc. and
Obtain more being widely applied.
The content of the invention
It is an object of the invention to provide a kind of Ka wave bands micro-strip waveguide transitions circuit, the Ka wave band micro-strip waveguide transitions circuits
Have the following advantages that：1) broadband, Ka frequency range 12GHz bandwidth is covered；2) low-loss transition, Insertion Loss is less than 0.4dB in full frequency band；
3) it is simple in construction, compact, it is easily integrated.
To achieve these goals, the present invention provides a kind of Ka wave bands micro-strip waveguide transitions circuit, the Ka wave band micro-strip ripples
Leading change-over circuit includes：Micro belt board, square wave guide cavity and microstrip circuit board slot；Wherein, the micro belt board is placed on
In the microstrip circuit board slot, and the broadside of the waveguide mouth perpendicular to the square wave guide cavity stretches into square wave guide cavity；It is described micro-
Band circuit board one end is input port, and the other end stretches into the rectangular waveguide intracavitary.
Preferably, the micro belt board includes：Medium substrate and the micro-strip transmission being arranged on the medium substrate
Line, impedance transformer, probe, ground hole and ground area.
Preferably, the model Rogers RT5880 of the medium substrate.
Preferably, the square wave guide cavity is model BJ320 square wave guide cavity.
Preferably, the length of the square wave guide cavity is 7.112mm；The width of the square wave guide cavity is 3.556mm.
Preferably, the micro belt board stretches into the part and the short-circuit face of the square wave guide cavity of the square wave guide cavity
The distance between be equal to a quarter waveguide wavelength odd-multiple.
Preferably, it is provided with lead-free solder between the micro belt board and the microstrip circuit board slot.
Pass through above-mentioned technical proposal, in present invention design, using Ansoft HFSS Electromagnetic Simulations environment to the micro-strip-ripple
Lead change-over circuit to be modeled, emulate and optimization design, its threedimensional model is as shown in figure 3, micro-strip-waveguide transitions electricity after emulation
The insertion loss and return loss on road are as shown in Figure 4.Simulation result shows that the micro-strip-waveguide transitions circuit is 28-40GHz's
Insertion Loss is less than 0.15dB in broadband range, and return loss is less than -28dB.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Brief description of the drawings
Accompanying drawing is for providing a further understanding of the present invention, and a part for constitution instruction, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the micro belt board for the preferred embodiment for illustrating a kind of Ka wave bands micro-strip waveguide transitions circuit of the present invention
Structure positive structure schematic；
Fig. 1 ' is the microstrip circuit for the preferred embodiment for illustrating a kind of Ka wave bands micro-strip waveguide transitions circuit of the present invention
Harden structure reverse structure schematic；
Fig. 2 is the structure chart for the preferred embodiment for illustrating a kind of Ka wave bands micro-strip waveguide transitions circuit of the present invention；
Fig. 2 ' is the A-A ' section views for the preferred embodiment for illustrating a kind of Ka wave bands micro-strip waveguide transitions circuit of the present invention
The structure chart in face；And
Fig. 3 is the three-dimensional artificial mould for the preferred embodiment for illustrating a kind of Ka wave bands micro-strip waveguide transitions circuit of the present invention
Type structure chart；
Fig. 4 is the preferred embodiment three-dimensional artificial result for illustrating a kind of Ka wave bands micro-strip waveguide transitions circuit of the present invention
Schematic diagram.
Description of reference numerals
The square wave guide cavity of 1 micro belt board 2
The microstrip transmission line of 3 microstrip circuit board slot 11
The probe of 12 impedance transformer 13
The ground area of 14 ground hole 15
16 medium substrate, 21 short-circuit face
Embodiment
The embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this place is retouched
The embodiment stated is merely to illustrate and explain the present invention, and is not intended to limit the invention.
In the present invention, in the case where not making opposite explanation, the noun of locality such as " upper and lower, left and right " used typically refers to
As shown in Figure 1 up and down." inside and outside " refer in specific profile it is interior with it is outer." remote, near " refers to relative to some part
Far with closely.
The present invention provides a kind of Ka wave bands micro-strip waveguide transitions circuit, and the Ka wave band micro-strip waveguide transitions circuits include：It is micro-
Band circuit board 1, square wave guide cavity 2 and microstrip circuit board slot 3；Wherein, the micro belt board 1 is placed on the micro belt board
In groove 3, and the broadside of the waveguide mouth perpendicular to the square wave guide cavity 2 stretches into square wave guide cavity 2；The micro belt board 1 one
Hold and stretched into for input port, the other end in the square wave guide cavity 2.Square wave guide cavity and microstrip circuit board slot are to connect together
, but size is different, purposes is different.Square wave guide cavity is standard rectangular waveguide mouth, and microstrip circuit board slot is used to install micro-strip
Circuit board, size match with microstrip circuit board size.
Operation principle of the present invention：The transition structure is coupled based on waveguide E face probe 13, and micro-strip is realized using microstrip probe 13
To rectangular waveguide main mould TE10 conversion, millimeter-wave signal inputs, become by impedance the quasi- TEM moulds of line from 50 ohm microstrip one end
Thread-changing and microstrip probe 13 carry out patten transformation, are exported finally by rectangular waveguide.Impedance transformer 12 and probe 13 are located at square
On shape waveguide E face center, the not only effect of impedance conversion, and make the quasi- TEM moulds signal in microstrip circuit smoothly turn very much
Change the TE10 mould signals in rectangular waveguide into.
In a kind of embodiment of the present invention, in order to realize the realization of the function of micro belt board 1, the micro-strip electricity
Road plate 1 includes：Medium substrate 16 and the microstrip transmission line 11 being arranged on the medium substrate 16, impedance transformer 12, visit
Pin 13, ground hole 14 and ground area 15.
In this kind of embodiment, the model Rogers RT5880 of the medium substrate 16.
In the above-described embodiment, the relative dielectric constant of medium substrate 16 is 2.22, and loss angle tangent 0.009 is thick
Spend for 0.5mil, by calculating, can to obtain 50 ohmage line line widths be W50=0.38mm
In a kind of embodiment of the present invention, to enable the transition structure to work in Ka frequency ranges, rectangular waveguide
Cut-off frequency must be less than working frequency, and the square wave guide cavity 2 is model BJ320 square wave guide cavity 2.
In this kind of embodiment, the length of the square wave guide cavity 2 is 7.112mm；The width of the square wave guide cavity 2
For 3.556mm.Wherein, a, b are rectangular waveguide broadside and narrow side in Fig. 2, and the cut-off frequency of its main mould TE10 moulds is about
21.08GHz。
In a kind of embodiment of the present invention, the micro belt board 1 stretches into the part of the square wave guide cavity 2
The distance between short-circuit face 21 of the square wave guide cavity 2 is equal to the odd-multiple of a quarter waveguide wavelength.
It can so ensure that probe 13 is maximum in voltage in waveguide cavity, i.e. the most strong position of electric field, to reach as far as possible
High coupling efficiency, reduce transmission loss.
In a kind of embodiment of the present invention, set between the micro belt board 1 and the microstrip circuit board slot 3
It is equipped with lead-free solder.
By adjusting following parameter：The length L1 and width W1 of the impedance transformer 12 of micro belt board 1, the length of probe 13
The distance between L2 and width W2, micro belt board 1 to the short-circuit face 21 of square wave guide cavity 2 d, the height h of microstrip circuit board slot 3,
It can make to obtain best match between microstrip line and rectangular waveguide, so as to realize millimeter-wave signal between microstrip line and rectangular waveguide
Low-loss, broadband transition.
Micro-strip-waveguide transitions circuit is modeled in high-frequency structure three-dimensional artificial software Ansoft HFSS and emulation is set
Meter, by accurately modeling and optimization Simulation, optimal solution is obtained, the parameter finally determined is：
W50=0.38mm；W1=0.2mm；W2=0.47mm；
L1=0.5mm；L2=1.8mm；D=2.3mm；H=0.8mm.
In order to verify the design theory, it is necessary to complete the assembling of micro-strip-waveguide transitions circuit.According to Fig. 2 assembly method,
The micro belt board 1 made is freezed in microstrip circuit board slot 3 with lead-free solder.Assemble the micro-strip-waveguide transitions completed
Circuit size is less than 12mm*16mm*6mm, if being integrated into millimeter wave product, its size can be smaller.Use vector network point
Analyzer is tested, as a result as follows：It is interior in 28GHz to 40GHz frequency range, is less than -25dB with interior return loss, inserts
Loss is less than 0.4dB.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, still, the present invention is not limited to above-mentioned reality
The detail in mode is applied, in the range of the technology design of the present invention, a variety of letters can be carried out to technical scheme
Monotropic type, these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (7)
1. a kind of Ka wave bands micro-strip waveguide transitions circuit, it is characterised in that the Ka wave band micro-strip waveguide transitions circuits include：Micro-strip
Circuit board (1), square wave guide cavity (2) and microstrip circuit board slot (3)；Wherein, the micro belt board (1) is placed on the micro-strip
In circuit board slot (3), and the broadside of the waveguide mouth perpendicular to the square wave guide cavity (2) stretches into square wave guide cavity (2)；It is described micro-
Band circuit board (1) one end is input port, and the other end is stretched into the square wave guide cavity (2).
2. Ka wave bands micro-strip waveguide transitions circuit according to claim 1, it is characterised in that the micro belt board (1)
Including：Medium substrate (16) and the microstrip transmission line (11) being arranged on the medium substrate (16), impedance transformer (12),
Probe (13), ground hole (14) and ground area (15).
3. Ka wave bands micro-strip waveguide transitions circuit according to claim 2, it is characterised in that the medium substrate (16)
Model Rogers RT5880.
4. Ka wave bands micro-strip waveguide transitions circuit according to claim 1, it is characterised in that the square wave guide cavity (2)
For model BJ320 square wave guide cavity (2).
5. Ka wave bands micro-strip waveguide transitions circuit according to claim 1, it is characterised in that the square wave guide cavity (2)
Length be 7.112mm；The width of the square wave guide cavity (2) is 3.556mm.
6. Ka wave bands micro-strip waveguide transitions circuit according to claim 1, it is characterised in that the micro belt board (1)
Stretch into the distance between the part of the square wave guide cavity (2) and short-circuit face (21) of the square wave guide cavity (2) and be equal to four points
One of waveguide wavelength odd-multiple.
7. Ka wave bands micro-strip waveguide transitions circuit according to claim 1, it is characterised in that the micro belt board (1)
Lead-free solder is provided between the microstrip circuit board slot (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710479958.7A CN107394329A (en) | 2017-06-22 | 2017-06-22 | Ka wave band micro-strip waveguide transitions circuits |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710479958.7A CN107394329A (en) | 2017-06-22 | 2017-06-22 | Ka wave band micro-strip waveguide transitions circuits |
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| Publication Number | Publication Date |
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| CN107394329A true CN107394329A (en) | 2017-11-24 |
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| CN201710479958.7A Pending CN107394329A (en) | 2017-06-22 | 2017-06-22 | Ka wave band micro-strip waveguide transitions circuits |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109216847A (en) * | 2018-09-21 | 2019-01-15 | 成都博芯联科科技有限公司 | A kind of micro-strip vertical transition structure |
| CN110212277A (en) * | 2019-07-02 | 2019-09-06 | 电子科技大学 | A kind of waveguide in circuit with ground is to the face micro-strip E probe transitions structure |
| CN112397864A (en) * | 2020-10-21 | 2021-02-23 | 中国电子科技集团公司第二十九研究所 | Integrated waveguide microstrip probe transition structure |
| CN114899570A (en) * | 2022-06-13 | 2022-08-12 | 电子科技大学成都学院 | Microstrip-waveguide conversion structure with out-of-band suppression function |
| CN115133247A (en) * | 2022-07-20 | 2022-09-30 | 北京航天科工世纪卫星科技有限公司 | Ka frequency channel waveguide microstrip line transition structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106450632A (en) * | 2016-11-11 | 2017-02-22 | 西安电子工程研究所 | Small-size Ka waveband broadband-end waveguide feeding micro-strip conversion structure |
-
2017
- 2017-06-22 CN CN201710479958.7A patent/CN107394329A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106450632A (en) * | 2016-11-11 | 2017-02-22 | 西安电子工程研究所 | Small-size Ka waveband broadband-end waveguide feeding micro-strip conversion structure |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109216847A (en) * | 2018-09-21 | 2019-01-15 | 成都博芯联科科技有限公司 | A kind of micro-strip vertical transition structure |
| CN109216847B (en) * | 2018-09-21 | 2024-07-09 | 成都博芯联科科技有限公司 | Microstrip vertical transition structure |
| CN110212277A (en) * | 2019-07-02 | 2019-09-06 | 电子科技大学 | A kind of waveguide in circuit with ground is to the face micro-strip E probe transitions structure |
| CN110212277B (en) * | 2019-07-02 | 2020-11-06 | 电子科技大学 | Waveguide-to-microstrip E-plane probe transition structure with grounding loop |
| CN112397864A (en) * | 2020-10-21 | 2021-02-23 | 中国电子科技集团公司第二十九研究所 | Integrated waveguide microstrip probe transition structure |
| CN114899570A (en) * | 2022-06-13 | 2022-08-12 | 电子科技大学成都学院 | Microstrip-waveguide conversion structure with out-of-band suppression function |
| CN114899570B (en) * | 2022-06-13 | 2023-07-07 | 电子科技大学成都学院 | Microstrip-waveguide conversion structure with out-of-band suppression function |
| CN115133247A (en) * | 2022-07-20 | 2022-09-30 | 北京航天科工世纪卫星科技有限公司 | Ka frequency channel waveguide microstrip line transition structure |
| CN115133247B (en) * | 2022-07-20 | 2023-12-29 | 北京航天科工世纪卫星科技有限公司 | Ka frequency channel waveguide microstrip line transition structure |
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Application publication date: 20171124 |
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