CN206163675U - Waveguide microstrip transform structure is presented to small -size ka wave band broadband end - Google Patents
Waveguide microstrip transform structure is presented to small -size ka wave band broadband end Download PDFInfo
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- CN206163675U CN206163675U CN201621218940.9U CN201621218940U CN206163675U CN 206163675 U CN206163675 U CN 206163675U CN 201621218940 U CN201621218940 U CN 201621218940U CN 206163675 U CN206163675 U CN 206163675U
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Abstract
The utility model relates to a waveguide microstrip transform structure is presented to small -size ka wave band broadband end has combined semicircle electric current loop and gradual change ridge waveguide two kinds of field coupling forms, and the magnetic coupling mixes with the electric coupling and exists in the changeover portion, and the two coupling forms of this kind have guaranteed that it can a half -size scale littleer than other structures, only the highest frequency of operation wavelength 80% to working frequency band covers 30~43GHz.
Description
Technical field
Invention category field of circuit technology, specifically realizes waveguide transitions section using waveguide and microstrip circuit, realizes Ka wave bands
The micro-strip waveguide transitions function of wideband band edge input.
Background technology
And with the functions such as the continuous development of solid state technology and MMIC technologies, frequency conversion, amplification, the gating of millimeter wave frequency band electricity
Road adopts planar circuit form, and the transmission of each intermodule adopts microstrip structure, can be difficult to stand because loss is bigger than normal, so
Micro-strip waveguide transitions circuit becomes indispensable unit.Although the middle conversion section of most of millimeter-wave systems or module is all used
Be the conversion section of 90 ° of E faces probe geometries, but still have mass part it is particularly limited need use end present form.Conventional end
Feedback structure, be used mostly the ridge waveguide of impedance step transition, the fin line of symmetrical arc transition, quasi- yagi Directional Antennas probe or
Waveguide gradual transition transition form, but these are either the hanging sections of micro-strip from the structure that micro-strip is converted directly into waveguide or are ripple
Transition segment length is led, it is long to ultimately result in whole conversion portion size, or being exactly that microstrip circuit needs positive and negative graphic printing.And
With developing rapidly for science and technology, the miniaturization of circuit and the continuous promotion of simplification demand, this all prints single sided circuits, Yi Ding
The more compact end feedback formula broadband conversion section of position assembling, size becomes the development demand of many millimeter-wave systems.
The content of the invention
The technical problem to be solved
The present invention is primarily directed to that size in existing Ka wave bands end feedback Waveguide-microbelt change-over circuit is long, printed circuit is multiple
Miscellaneous, assembly precision requires high defect, have devised that a kind of hanging section is short, is printed on one side, overall size is little, the waveguide that is easily assembled
Microstrip transformation structure.Its bandwidth of operation covers 30～43GHz, and in this frequency range, its port standing wave is good, and insertion loss is low, and
Assembling uniformity is good, and without the need for debugging, damascene structures also have certain vibration resistance.
Technical scheme
A kind of small size Ka wide waveband band edge presents Waveguide-microbelt transformational structure, including micro-strip dielectric-slab and waveguide, its feature
It is micro-strip dielectric-slab to be inserted in waveguide, described micro-strip dielectric-slab is constituted by 3 sections：First paragraph is and device or planar circuit
The impedance of connection is the microstrip transmission line of 50 Ω；Second segment is high resistant line, i.e. quarter-wave impedance transformation line, along waveguide
Heart line straight line is entered in waveguide cavity, in order to the micro-strip plate and wire chamber that adapt to the change high resistant line both sides of impedance line need to be while contract
Narrow, first paragraph and second segment are located in wire chamber, and wire chamber is connected as one with waveguide；3rd section is to stretch into inside waveguide cavity
Point, the top of the quasi- triangular form figure of metal that feed-in is printed, described after deflecting to side into the micro-strip high resistant line in waveguide cavity
Metal edges near the side of waveguide short end face of metal quasi- triangle be arc structure, near the side at waveguide transmission end
Metal edges are linear structure, in the embedded waveguide broadside metallic walls of metal edges on its summit opposite, by conductive adhesive together,
Micro-strip metal level is on the center line of waveguide broadside；The edge outside waveguide cavity is stretched out metal aperture is provided with for adjusting edge
The short-circuit face at place.
Described metal aperture is 4-8.
Described waveguide is BJ100.
The sheet material of described micro-strip dielectric-slab is Roger 5880.
Described wire chamber and the material of waveguide is aluminium, and surface is using electric conductive oxidation process.
Beneficial effect
A kind of small size Ka wide waveband band edge proposed by the present invention presents Waveguide-microbelt transformational structure, has the beneficial effect that：
[1] micro-strip plate is employed in the design and is inserted directly into waveguide cavity, printed using impedance transformation line and quasi- triangle shaped microstrip
Line processed, realizes the double coupled modes of magnetic, electricity and the conversion deposited so as in 30～43GHz frequency ranges, with good resistance
Match somebody with somebody, low insertion loss and port standing wave.
[2] high resistant line part micro-strip plate and air chamber narrow process in the design, not only improve micro-strip and enter waveguide
The discontinuity of the impedance conversion of section, and the broadening to transformation segment bandwidth of operation has played certain effect；Furthermore its sheet material
Change in size also plays the effect of assembling positioning, improves the uniformity of its assembling, reduces assembly difficulty.
[3] in the design quasi- triangle short-circuit side, embedded in metal wave guide wall, by conductive adhesive process.This
Planting structure can not only play a part of dielectric-slab positioning in assembling, improve assembling uniformity, reduce assembly difficulty；And it is embedding
Enter formula structure also play ensure dielectric-slab stable effect so as to can under certain Vibration Condition will not warpage become
Shape.
Description of the drawings
Fig. 1 Waveguide-microbelts change top view
Fig. 2 Waveguide-microbelts change side view
Fig. 3 Waveguide-microbelts change three-dimensional perspective
Fig. 4 Waveguide-microbelt conversion testing result figures
Specific embodiment
In conjunction with embodiment, accompanying drawing, the invention will be further described：
Small size Ka wide waveband band edge of the present invention presents Waveguide-microbelt transformational structure, is from rectangular waveguide end by microstrip probe
Face is inserted, and through quarter-wave impedance transformation line matching transition is carried out, and turns port by the air chamber of constriction, is connected to
One quasi- triangular form micro-strip radiation probe with arc-shaped edges, triangle radiation fin is only machined in the one side of dielectric-slab and by connecing
Ground hole is connected to wave guide wall.The conversion section of this one side etched features is different from general fin line, and it is a magnetic coupling and electricity
The mixture of coupling, arc-shaped edges produce magnetic coupling similar to electric current loop, in waveguide cavity, and the triangular form of bevel edge type similar to
The ridge waveguide of form, therefore this hybrid-type conversion are electrically coupled, not only cause this probe face band wide, insertion loss
It is low, and due to its damascene structures thus with good resistance to shock, it is adaptable to various kinds of equipment and system.
The conversion of this Waveguide-microbelt combines two kinds of field coupled modes of semi arch electric current loop and gradual change ridge waveguide, designs one
The Ka wave band micro-strip waveguide transitions of quasi- triangle microstrip transition section, magnetic coupling is mixed with being electrically coupled in changeover portion, this double
Coupled mode ensure that its can size more half as large than other structures, only the 80% of maximum operating frequency wavelength, and work
Frequency range covers 30～43GHz.
In this structure, its impedance of the microstrip transmission line being connected with device or planar circuit is 50 Ω, after a segment length
Transformer section is proceeded to, high resistant line, i.e. quarter-wave impedance transformation line is transformed to, along waveguide core line straight line waveguide is entered
In chamber；The micro-strip plate of high resistant line both sides and air chamber need constriction simultaneously, adapt to the change of impedance line；Into the micro-strip in waveguide cavity
The top of the quasi- triangular form figure of metal that high resistant line is printed to feed-in after the deflection of side；The embedded waveguide of the metal edges on its summit opposite
In broadside metallic walls, micro-strip metal level is on the center line of waveguide broadside, the gold of edge by conductive adhesive together
Category hole is used for adjusting the short-circuit face of edge；Metal edges of the quasi- triangle of metal near the side of waveguide short end face are circular arc knot
Structure, the surface current that FD feed is produced flows along metal edges, produces around the magnetic field of triangle, realizes magnetic coupling conversion；Gold
It is linear structure to belong to the metal edges in quasi- triangle near waveguide transmission end, this to be similar to that the ridge ripple that highly linear changes
Lead, be electrically coupled change and turn to its leading form.The double coupled modes of this magnetic, electricity not only shorten the length of group section, also widen
Its bandwidth of operation.
Fig. 1 gives the top view and side view of conversion portion.Bright gray parts are micro-strip dielectric-slab in figure, and sheet material is
Roger 5880, dark gray section is the metal wire of etching, and metal layer thickness is t, and sheet metal thickness is h3；Grey figure is printing
The microstrip transmission line etched on plate, wide transmission line is 50 Ω impedance lines, width w0, its length can adjust according to design requirement；
Narrow transmission line be high impedance line, width w1, its length is l4；50 ohm line region strip widths on the left of dielectric-slab are w3, it is high
The width constriction of impedance line part is w4, its length is l5；The dielectric-slab upper air chamber of the bonding housing in left side is highly
h4.It is waveguide cavity that the part increased is widened on right side, and waveguide is BJ100, and its width is respectively a and b with height.Containing high impedance line
Right side waveguide cavity, and embedded downside metallic walls are vacantly inserted with the dielectric-slab of quasi- triangle.High impedance line is entered in waveguide cavity, to
Upside straight-line bending, hundred arrive away from left side short circuit end face l1, away from top surface h1Position；The left side of quasi- triangle be arc structure, its chi
It is very little for r3, the size being embedded in wall is h2, the radius of 6 plated through-holes is all r2；The length of wave-guide cavity wave can be wanted according to design
Ask adjustment.
The synthesizer dimensional parameters list (unit of table 1：mm)
| a | b | r1 | r2 | r3 | l1 | l2 | l3 | l4 | l5 |
| 7.112 | 3.556 | 0.4 | 0.2 | 1.506 | 0.3 | 0.2 | 3.5 | 1.1 | 0.6 |
| t | w0 | w1 | w2 | w3 | w4 | h1 | h2 | h3 | h4 |
| 0.03 | 1.58 | 0.3 | 0.3 | 2.8 | 1.4 | 0.988 | 0.6 | 0.254 | 2.5 |
Fig. 2 gives the threedimensional model cavity figure of a Ka wave bands Waveguide-microbelt conversion, the metal for etching of Dark grey
Track and figure, light gray is dielectric-slab, and remaining blank parts is air chamber and waveguide cavities.Micro-strip is to the left, and waveguide is inclined
It is right.Fig. 3 is back-to-back module measured result, and the material of modular converter is duralumin, and surface is led to using electric conductive oxidation process, dielectric-slab
Cross on the housing and side wall of conductive adhesive, in 30GHz～43GHz full bandwidths, insertion loss is less than 0.8dB for it, and port is returned
Ripple loss is less than -8.5dB, and 30GHz is most not good enough for it, after frequency increases, respectively less than -14.3dB.From test result as can be seen that
Monolateral absolute insertion losses are less than 0.4dB, and more than 31GHz is more excellent.
Claims (5)
1. a kind of small size Ka wide waveband band edge presents Waveguide-microbelt transformational structure, including micro-strip dielectric-slab and waveguide, and its feature exists
In micro-strip dielectric-slab is inserted in waveguide, described micro-strip dielectric-slab is constituted by 3 sections：First paragraph is to connect with device or planar circuit
The impedance for connecing is the microstrip transmission line of 50 Ω；Second segment is high resistant line, i.e. quarter-wave impedance transformation line, along waveguide core
Line straight line is entered in waveguide cavity, in order to the micro-strip plate and wire chamber that adapt to the change high resistant line both sides of impedance line need constriction simultaneously,
First paragraph and second segment are located in wire chamber, and wire chamber is connected as one with waveguide；3rd section is to stretch into waveguide cavity interior part,
The top of the quasi- triangular form figure of metal that feed-in is printed, described gold after into the micro-strip high resistant line in waveguide cavity to side deflection
It is arc structure to belong to metal edges of the quasi- triangle near the side of waveguide short end face, near the metal of the side at waveguide transmission end
While be linear structure, in the embedded waveguide broadside metallic walls of metal edges on its summit opposite, by conductive adhesive together, micro-strip
Metal level is on the center line of waveguide broadside；The edge outside waveguide cavity is stretched out metal aperture is provided with for adjusting edge
Short-circuit face.
2. a kind of small size Ka wide waveband band edge according to claim 1 presents Waveguide-microbelt transformational structure, it is characterised in that
Described metal aperture is 4-8.
3. a kind of small size Ka wide waveband band edge according to claim 1 presents Waveguide-microbelt transformational structure, it is characterised in that
Described waveguide is BJ100.
4. a kind of small size Ka wide waveband band edge according to claim 1 presents Waveguide-microbelt transformational structure, it is characterised in that
The sheet material of described micro-strip dielectric-slab is Roger 5880.
5. a kind of small size Ka wide waveband band edge according to claim 1 presents Waveguide-microbelt transformational structure, it is characterised in that
Described wire chamber and the material of waveguide is aluminium, and surface is using electric conductive oxidation process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621218940.9U CN206163675U (en) | 2016-11-11 | 2016-11-11 | Waveguide microstrip transform structure is presented to small -size ka wave band broadband end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621218940.9U CN206163675U (en) | 2016-11-11 | 2016-11-11 | Waveguide microstrip transform structure is presented to small -size ka wave band broadband end |
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| CN206163675U true CN206163675U (en) | 2017-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621218940.9U Withdrawn - After Issue CN206163675U (en) | 2016-11-11 | 2016-11-11 | Waveguide microstrip transform structure is presented to small -size ka wave band broadband end |
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Cited By (5)
| 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 |
| CN108879056A (en) * | 2018-06-29 | 2018-11-23 | 北京星网锐捷网络技术有限公司 | microwave transmission circuit |
| CN110112570A (en) * | 2019-05-08 | 2019-08-09 | 陕西天鼎无线技术股份有限公司 | A kind of method and device of specific direction that realizing wave beam |
| CN111164825A (en) * | 2017-05-24 | 2020-05-15 | 伟摩有限责任公司 | Broadband waveguide launch design on single layer PCB |
| CN114566778A (en) * | 2022-01-20 | 2022-05-31 | 电子科技大学 | Straight-through waveguide microstrip transition structure based on wide conduction band |
-
2016
- 2016-11-11 CN CN201621218940.9U patent/CN206163675U/en not_active Withdrawn - After Issue
Cited By (9)
| 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 |
| CN106450632B (en) * | 2016-11-11 | 2021-08-10 | 西安电子工程研究所 | Small-size Ka-band broadband end-fed waveguide microstrip conversion structure |
| CN111164825A (en) * | 2017-05-24 | 2020-05-15 | 伟摩有限责任公司 | Broadband waveguide launch design on single layer PCB |
| CN111164825B (en) * | 2017-05-24 | 2022-08-16 | 伟摩有限责任公司 | Broadband waveguide launch design on single layer PCB |
| CN108879056A (en) * | 2018-06-29 | 2018-11-23 | 北京星网锐捷网络技术有限公司 | microwave transmission circuit |
| CN110112570A (en) * | 2019-05-08 | 2019-08-09 | 陕西天鼎无线技术股份有限公司 | A kind of method and device of specific direction that realizing wave beam |
| CN110112570B (en) * | 2019-05-08 | 2020-08-21 | 陕西天鼎无线技术股份有限公司 | Method and device for realizing specific pointing of beam |
| CN114566778A (en) * | 2022-01-20 | 2022-05-31 | 电子科技大学 | Straight-through waveguide microstrip transition structure based on wide conduction band |
| CN114566778B (en) * | 2022-01-20 | 2023-03-10 | 电子科技大学 | Through type waveguide microstrip transition structure based on wide conduction band |
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Granted publication date: 20170510 Effective date of abandoning: 20210810 |
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| AV01 | Patent right actively abandoned |
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