CN109449550A - A kind of W frequency range waveguide-strip line transformational structure - Google Patents
A kind of W frequency range waveguide-strip line transformational structure Download PDFInfo
- Publication number
- CN109449550A CN109449550A CN201811436257.6A CN201811436257A CN109449550A CN 109449550 A CN109449550 A CN 109449550A CN 201811436257 A CN201811436257 A CN 201811436257A CN 109449550 A CN109449550 A CN 109449550A
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- strip line
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- frequency range
- waveguide
- transformational structure
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- 239000002184 metal Substances 0.000 claims abstract description 39
- 229910052751 metal Inorganic materials 0.000 claims abstract description 39
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 238000001465 metallisation Methods 0.000 claims abstract description 14
- 239000000919 ceramic Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 238000005530 etching Methods 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 238000003780 insertion Methods 0.000 abstract description 7
- 230000037431 insertion Effects 0.000 abstract description 7
- 230000008878 coupling Effects 0.000 abstract description 5
- 238000010168 coupling process Methods 0.000 abstract description 5
- 238000005859 coupling reaction Methods 0.000 abstract description 5
- 230000005672 electromagnetic field Effects 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 239000006185 dispersion Substances 0.000 description 3
- 239000000523 sample Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Waveguides (AREA)
Abstract
The present invention provides a kind of W frequency range waveguide-strip line transformational structures.By standard waveguide (1), microwave multi-layer boards, metal patch (2), coupling aperture (3), and the composition of the strip line (4) with metallic vias (5).Standard waveguide (1) can be directly fixedly connected on microwave multi-layer boards top layer (6), electromagnetic field passes through strip transmission, energy, is finally fed into standard waveguide (1) by the metal patch (2) for motivating top metal layer afterwards by coupling aperture (3).Metallization VIA (5) forms a rectangular cavity on perpendicular to microwave multi-layer boards direction, and limiting electromagnetic wave can only be entered in standard waveguide in the form of main mould.The present invention is low small with standing wave in the Insertion Loss of W frequency range (75GHz~81GHz).It is simple and compact for structure.The w frequency range waveguide-strip line conversion equipment that can be used as a kind of simplicity is widely used in W frequency range car radar, the equipment such as W frequency range safety check instrument.
Description
Technical field
The present invention relates to a kind of W frequency range millimeter wave transformational structures.
Background technique
With 77GHz automobile collision avoidance radar, the rise of W frequency range safety check instrument in recent years.W frequency is realized on microwave multi-layer boards
The demand of section multifunctional circuit is more and more.The microstrip line probe that excessive manner is mostly between existing printing board transmission line and waveguide
It is needed microstrip line insertion in the waveguide with transient modes, ordinary circumstances such as fin lines, often volume is larger, and can only be at edge
It realizes.
And for W frequency band signals, the length of feeder line is big to insertion loss Index Influence.Multi-antenna array array antenna, input terminal
Antenna array center is placed on compared with being placed on front edge, has feed line length short, Insertion Loss is small, and cabling is convenient, and can realize
The equal advantage of each road feed line length and phase of all antennas.Traditional micro-strip turns waveguiding structure and is difficult to realize.It needs
A kind of compact-sized W frequency range waveguide-transmission line transformational structure
Dispersion of the strip line in W frequency range is better than microstrip line (dispersion of TEM mould is better than quasi- TEM mould).Strip line electromagnetic screen
It covers and is better than microstrip line.The cabling of strip line can facilitate and dock with waveguiding structure in the middle layer of microwave multi-layer boards.Due to above
Some advantages, W frequency range waveguide-strip line transformational structure are highly suitable for the conversion of the energy between W frequency range microwave multi-layer boards and waveguide.
Summary of the invention
The technical problem to be solved by the present invention is it is big to overcome existing W band microstrip to turn waveguiding structure volume structure, in microwave
Multiple-level surface realizes the disadvantages of difficult.The present invention provides a kind of simple W frequency range waveguide-strip line transformational structures, can be by standard
Waveguide mouth is directly connected with microwave multi-layer boards top layer, by intermediate band-like lines matching circuit design, meets W frequency range strip line
To waveguide energy conversion requirements.It is small and exquisite with transition structure, realize simple, standing wave, the features such as insertion loss index is excellent.
The technical scheme adopted by the invention is that: a kind of W frequency range waveguide-strip line transformational structure, including waveguide and microwave
Multi-layer board；Microwave multi-layer boards are four laminates, are followed successively by TOP metal layer, strip line upper layer, strip line layer and band-like from top to bottom
Line lower layer is ceramic medium material, TOP metal layer, strip line upper layer, strip line layer, strip line lower layer and each layer between every layer
Between ceramic medium material press to form microwave multi-layer boards；Metal patch is formed by etching technics in the middle part of TOP metal layer；Band
Square groove is formed by etching in the middle part of shape line upper layer；Strip transmission line is etched on strip line layer；W frequency range millimeter wave energy is by band
Shape transmission line motivates metal patch by square groove, is transmitted in waveguide；It is arranged around square groove one week and metallized
Hole, metallization VIA run through and perpendicular to microwave multi-layer boards, form metal electricity wall, constrain microwave energy；Waveguide passes through
Flange is mounted on microwave multi-layer boards, is adjacent to TOP metal layer.
The TOP metal layer, strip line upper layer, strip line layer, strip line lower layer material be copper.
Medium between the TOP metal layer, strip line upper layer is rog4350B, with a thickness of 0.508mm.
Medium between the strip line layer, strip line lower layer is rog4350B, with a thickness of 0.168mm.
Medium between the strip line upper layer, strip line layer is prepreg rog4450, with a thickness of 0.1mm.
The waveguide model WR10.
The metal patch is located at right above rectangular groove center.
The strip transmission line passes through immediately below square groove, and distance of the end away from rectangular groove center is 1/4W frequency range millimeter
Wavelength X g of the wave energy centre frequency in ceramic dielectric.
Distance s < λ between described two adjacent metal via holesg/5。
The diameter d of the metallization VIA meets: s < 4d.
The advantages of the present invention over the prior art are that:
(1) compared with conventional waveguide-microstrip line probe structure, volume is smaller, more compact structure.Waveguide can directly be buckled in micro-
The multiple-plate top layer of wave designs without labyrinth, and connection is simple.
(2) insensitive to strip line dielectric thickness below, facilitate and carry out more multi-layer board pressings, is conducive to realize complicated
Circuit design.
(3) waveguide is directly transited into strip line and carries out energy transmission.In identical ceramic microwave multi-layer board medium, W frequency
The dispersion of strip transmission and insertion loss index are better than microstrip line in section.Isolation and shield effectiveness are also superior to microstrip line.
Detailed description of the invention
Fig. 1 is W frequency range waveguide-strip line transformational structure schematic diagram；
Fig. 2 is W frequency range waveguide-strip line transformational structure sectional view；
Fig. 3 is W frequency range waveguide-strip line transformational structure S parameter index.
Specific embodiment
In conjunction with attached drawing, invention is further explained.
W frequency range waveguide-strip line transformational structure described in Fig. 1, be one kind can be applied to W frequency range (75GHz~
Transformational structure 81GHz).As shown in Figure 1 and Figure 2, a kind of W frequency range waveguide-strip line transformational structure, including waveguide 1 and microwave it is more
Laminate；Microwave multi-layer boards are four laminates, are followed successively by TOP metal layer 6, strip line upper layer 7, strip line layer 8 and band from top to bottom
Zhuan Xian lower layer 9 is ceramic medium material, TOP metal layer 6, strip line upper layer 7, strip line layer 8, strip line lower layer 9 between every layer
And the ceramic medium material between each layer presses to form microwave multi-layer boards；Metal is formed by etching technics in the middle part of TOP metal layer 6
Patch 2；Square groove 3 is formed by etching in the middle part of strip line upper layer 7；Strip transmission line 4, W frequency range milli are etched on strip line layer 8
75~81GHz of metric wave energy is transmitted by strip transmission line 4, is motivated metal patch 2 by square groove 3, is transmitted in waveguide 1；?
One week metallization VIA 5 is arranged in 3 surrounding of square groove, and metallization VIA 5 runs through TOP metal layer 6, strip line upper layer 7, strip line layer
8 and strip line lower layer 9, metal electricity wall is formed, microwave energy is constrained；Waveguide 1 is mounted on microwave multilayer by flange
On plate, it is adjacent to TOP metal layer 6.
TOP metal layer 6, strip line upper layer 7, strip line layer 8, strip line lower layer 9 material be copper；
Medium between TOP metal layer 6, strip line upper layer 7 is rog4350B, with a thickness of 0.508mm.
Medium between strip line layer 8, strip line lower layer 9 is rog4350B, with a thickness of 0.168mm.
Medium between strip line upper layer 7, strip line layer 8 is prepreg rog4450, with a thickness of 0.1mm.
1 model WR10 of waveguide.
Metal patch 2 is located at right above 3 center of square groove.
Strip transmission line passes through immediately below square groove 3, and distance of the end away from 3 center of square groove is 1/4 centre frequency wave
It is long.
The diameter of metallization VIA 5 is 0.2mm, and the spacing of adjacent two metallization VIA 5 is less than 0.6mm.
The characteristic impedance of strip transmission line 4 is 50 Ω.
Distance s < λ between two adjacent metal via holes 5g/5。
The diameter d of metallization VIA 5 meets: s < 4d.
The working principle of the invention: the stripline end open circuit in strip line layer 8 motivates 3 He of coupling aperture by upper layer
The match circuit for the vertical direction that metal patch 2 forms, so that electromagnetic field transmits the TEM mould by being parallel to microwave multi-layer boards direction
Formula becomes perpendicular to microwave multi-layer boards direction TE10 mode.Metallization VIA 5 forms a Rectangular Enclosure with Participating Media chamber, ensure that electromagnetism
Wave will not generate the higher modes other than main mould, and it is intracavitary that energy of electromagnetic field constrained in Rectangular Enclosure with Participating Media.Waveguide 1 passes through positioning dress
It sets for screw to be screwed on microwave multi-layer boards and be fitted closely with TOP metal layer 6.Since the dielectric of microwave multi-layer boards medium and air is normal
Number is different, and the outline for the Rectangular Enclosure with Participating Media chamber that metallization VIA 5 is formed is less than standard waveguide mouth, to guarantee that electromagnetic field is situated between from multi-layer board
Matter is transferred to the impedance matching in air.
In entire invention, the match circuit that coupling aperture 3 and metal patch 2 are formed plays the role of frequency tuning, coupling aperture 3
The size of opening size and metal patch 2, which rises, influences transmission frequency and bandwidth.Medium substrate and prepreg thickness effect arrive
Insertion Loss.W frequency range waveguide-strip line transformational structure performance is above several parameter comprehensive functions as a result, finally by emulation
So that W frequency range waveguide-strip line transformational structure has preferable differential loss and standing wave at (75GHz~81GHz).As shown in Figure 3.
Unspecified part of the present invention belongs to technology well known to those skilled in the art.
Claims (10)
1. a kind of W frequency range waveguide-strip line transformational structure, it is characterised in that: including waveguide (1) and microwave multi-layer boards；Microwave is more
Laminate is four laminates, is followed successively by under TOP metal layer (6), strip line upper layer (7), strip line layer (8) and strip line from top to bottom
Layer (9), is ceramic medium material between every layer, under TOP metal layer (6), strip line upper layer (7), strip line layer (8), strip line
Ceramic medium material between layer (9) and each layer presses to form microwave multi-layer boards；Pass through etching technics in the middle part of TOP metal layer (6)
It is formed metal patch (2)；Square groove (3) are formed by etching in the middle part of strip line upper layer (7)；Strip line layer etches band on (8)
Shape transmission line (4)；W frequency range millimeter wave energy is transmitted by strip transmission line (4), motivates metal patch (2) by square groove (3),
It is transmitted in waveguide (1)；One week metallization VIA (5) is set around square groove (3), and metallization VIA (5) is through simultaneously vertical
In microwave multi-layer boards, metal electricity wall is formed, microwave energy is constrained；Waveguide (1) is mounted on microwave multi-layer boards by flange
On, it is adjacent to TOP metal layer (6).
2. a kind of W frequency range waveguide-strip line transformational structure according to claim 1, it is characterised in that: the TOP metal
Layer (6), strip line upper layer (7), strip line layer (8), strip line lower layer (9) material be copper.
3. a kind of W frequency range waveguide-strip line transformational structure according to claim 1 or 2, it is characterised in that: the TOP gold
The medium belonged between layer (6), strip line upper layer (7) is rog4350B, with a thickness of 0.508mm.
4. a kind of W frequency range waveguide-strip line transformational structure according to claim 3, it is characterised in that: the strip line layer
(8), the medium between strip line lower layer (9) is rog4350B, with a thickness of 0.168mm.
5. a kind of W frequency range waveguide-strip line transformational structure according to claim 4, it is characterised in that: on the strip line
Medium between layer (7), strip line layer (8) is prepreg rog4450, with a thickness of 0.1mm.
6. a kind of W frequency range waveguide-strip line transformational structure according to claim 1, it is characterised in that: the waveguide (1)
Model WR10.
7. a kind of W frequency range waveguide-strip line transformational structure according to claim 1, it is characterised in that: the metal patch
(2) it is located at right above square groove (3) center.
8. a kind of W frequency range waveguide-strip line transformational structure according to claim 1, it is characterised in that: the band-like transmission
Line passes through immediately below square groove (3), and distance of the end away from square groove (3) center is 1/4W frequency range millimeter wave center of energy frequency
Wavelength X g in ceramic dielectric.
9. a kind of W frequency range waveguide-strip line transformational structure according to claim 1, it is characterised in that: described two adjacent
Distance s < λ between metallization VIA (5)g/5。
10. a kind of W frequency range waveguide-strip line transformational structure according to claim 9, it is characterised in that: the metallization
The diameter d of via hole (5) meets: s < 4d.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811436257.6A CN109449550A (en) | 2018-11-28 | 2018-11-28 | A kind of W frequency range waveguide-strip line transformational structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811436257.6A CN109449550A (en) | 2018-11-28 | 2018-11-28 | A kind of W frequency range waveguide-strip line transformational structure |
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| Publication Number | Publication Date |
|---|---|
| CN109449550A true CN109449550A (en) | 2019-03-08 |
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| CN201811436257.6A Pending CN109449550A (en) | 2018-11-28 | 2018-11-28 | A kind of W frequency range waveguide-strip line transformational structure |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109818117A (en) * | 2019-03-29 | 2019-05-28 | 重庆思睿创瓷电科技有限公司 | For reducing the strip lines configuration of power consumption, low-pass filter, communication device and system |
| CN110261756A (en) * | 2019-05-31 | 2019-09-20 | 惠州市德赛西威汽车电子股份有限公司 | The transformational structure of millimetre-wave radar circuit board radio frequency testing |
| CN112103608A (en) * | 2020-09-29 | 2020-12-18 | 中国航空工业集团公司雷华电子技术研究所 | Power divider and power combiner with high isolation |
| CN114156620A (en) * | 2021-12-31 | 2022-03-08 | 北京无线电测量研究所 | Stripline matched load |
| US11406007B2 (en) | 2020-02-19 | 2022-08-02 | Raytheon Company | Radio frequency (RF) energy transmission line transition structure |
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|---|---|---|---|---|
| US7486156B2 (en) * | 2005-10-19 | 2009-02-03 | Electronics And Telecommunications Research Institute | Millimeter-wave band broadband microstrip-waveguide transition apparatus having a main patch and a parasitic patch on different dielectric substrates |
| CN102074772A (en) * | 2011-01-07 | 2011-05-25 | 中国电子科技集团公司第十研究所 | Strip line waveguide switch |
| DE102013219697A1 (en) * | 2013-09-30 | 2015-04-02 | Siemens Aktiengesellschaft | Radio frequency antenna |
-
2018
- 2018-11-28 CN CN201811436257.6A patent/CN109449550A/en active Pending
Patent Citations (3)
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|---|---|---|---|---|
| US7486156B2 (en) * | 2005-10-19 | 2009-02-03 | Electronics And Telecommunications Research Institute | Millimeter-wave band broadband microstrip-waveguide transition apparatus having a main patch and a parasitic patch on different dielectric substrates |
| CN102074772A (en) * | 2011-01-07 | 2011-05-25 | 中国电子科技集团公司第十研究所 | Strip line waveguide switch |
| DE102013219697A1 (en) * | 2013-09-30 | 2015-04-02 | Siemens Aktiengesellschaft | Radio frequency antenna |
Non-Patent Citations (1)
| Title |
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| JAN SVEDIN 等: "A direct transition from microstrip to waveguide for millimeter-wave MMICs usingLTCC", 《ASIA-PACIFIC MICROWAVE CONFERENCE 2011 》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109818117A (en) * | 2019-03-29 | 2019-05-28 | 重庆思睿创瓷电科技有限公司 | For reducing the strip lines configuration of power consumption, low-pass filter, communication device and system |
| CN110261756A (en) * | 2019-05-31 | 2019-09-20 | 惠州市德赛西威汽车电子股份有限公司 | The transformational structure of millimetre-wave radar circuit board radio frequency testing |
| US11406007B2 (en) | 2020-02-19 | 2022-08-02 | Raytheon Company | Radio frequency (RF) energy transmission line transition structure |
| CN112103608A (en) * | 2020-09-29 | 2020-12-18 | 中国航空工业集团公司雷华电子技术研究所 | Power divider and power combiner with high isolation |
| CN112103608B (en) * | 2020-09-29 | 2022-02-22 | 中国航空工业集团公司雷华电子技术研究所 | Power divider and power combiner with high isolation |
| CN114156620A (en) * | 2021-12-31 | 2022-03-08 | 北京无线电测量研究所 | Stripline matched load |
| CN114156620B (en) * | 2021-12-31 | 2022-10-04 | 北京无线电测量研究所 | Stripline matched load |
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Application publication date: 20190308 |
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