CN205264857U - Millimeter wave microstrip pectination array antenna - Google Patents
Millimeter wave microstrip pectination array antenna Download PDFInfo
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- CN205264857U CN205264857U CN201521089972.9U CN201521089972U CN205264857U CN 205264857 U CN205264857 U CN 205264857U CN 201521089972 U CN201521089972 U CN 201521089972U CN 205264857 U CN205264857 U CN 205264857U
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- waveguide
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- array antenna
- microstrip
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/20—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/206—Microstrip transmission line antennas
Abstract
The utility model discloses a millimeter wave microstrip pectination array antenna, array antenna mainly comprises waveguide microstrip transition part, pectination radiation array antenna and medium base plate, waveguide microstrip transition part mainly comprises waveguide short circuit face, paster unit and WR12 standard waveguide feed interface, the front at the medium base plate is pasted to waveguide short circuit face, waveguide short circuit face is equipped with the plated -through hole, and the plated -through hole runs through the medium base plate not to be connected with ground, and the paster unit bonds at the back of medium base plate, WR12 standard waveguide feed interface covers the paster unit, pectination radiation array antenna includes straight feeder of a microstrip and radiation paster, radiation paster array is connected to the one end of the straight feeder of microstrip, cover on the other end of the straight feeder of microstrip current microstrip array antenna can be overcome in the lower shortcoming of millimeter wave band efficiency to the paster unit.
Description
Technical field
The utility model belongs to antenna technical field, is specifically related to a kind of millimeter wave microstrip comb arrays antenna.
Background technology
Microstrip antenna is due to its low section, feature cheaply, so it is widely used in various trailer-mounted radarsOn. But at millimeter wave frequency band, micro-strip array antenna is because feeding network loss is larger, so general efficiencyLow, see document " Microstripantennatheoryanddesign " (Peterperegrinus, 1981, James, J.R.,AndHall, P.S.) and " millimeter wave theory and technology " (publishing house of University of Electronic Science and Technology, 2000, Ruan Chengli).In " millimeter wave theory and technology ", enumerate a micro-strip array antenna example, when operating frequency isWhen 6.14GHz, antenna measurement efficiency is up to 81%, but in the time that operating frequency is brought up to 38.4GHz, antennaTesting efficiency only has 19%. Hence one can see that, and at millimeter wave frequency band, the loss of conductor and medium all be can not ignore,The characteristic of micro-band itself comprises appearance, the parasitic radiation of feed, machine error, the electrical error of Surface wave modeWith high-order mode etc., these characteristics have all limited the upper frequency limit of microstrip antenna.
In order to overcome these restrictions, can adopt advanced low-k materials, very thin dielectric substrate and metal surfaceNeed special processing, as document " Millimeter-wavemicrostriparrayantennawithhighefficiencyf orautomotiveradarsystems(R&DReviewofToyotaCRDLVol.37No.2,2002,Hideo" and document " StudyofAntennaDesignTechniquesforuse IizukaandKunioSakakibara)inautomotiveenviroment(DoctoralDissertationofNIT，2007，HideoIizuka)”。
The utility model is except adopting advanced low-k materials, thin-medium substrate and the gold-plated processing of copper foil surface,The also feeding network to micro-strip array antenna, Waveguide-microbelt transition portion has been done optimization. Applicable polytypeRadar antenna, is specially adapted to the application scenarios of 77GHz frequency range automobile collision avoidance radar and the low section of low cost.
Utility model content
In view of this, the utility model provides a kind of millimeter wave microstrip comb arrays antenna, can overcome existingThere is micro-strip array antenna in the lower shortcoming of millimeter wave frequency band efficiency.
Realization the utlity model has following scheme:
A kind of millimeter wave microstrip comb arrays antenna, described array antenna mainly by Waveguide-microbelt transition portion,Pectination radiant array antenna and medium substrate composition, described Waveguide-microbelt transition portion mainly by waveguide short face,Chip unit and WR12 standard waveguide feeding interface composition, described waveguide short face sticks on medium substrateFront, described waveguide short face is provided with plated-through hole, and plated-through hole runs through medium substrate and is connected with ground,Chip unit is bonded in the back side of medium substrate, described WR12 standard waveguide feeding interface covering plaster blade unit;Pectination radiant array antenna comprises a straight feeder line of micro-band and radiation patch, and one end of the straight feeder line of described micro-band connectsConnect radiation patch array; On the other end of the straight feeder line of described micro-band, cover described chip unit.
Further, the length of radiation patch is 1/2nd resonance wavelengths, and the spacing between radiation patch approximatelyBe 1/2nd waveguide wavelengths.
Further, the dielectric constant of described medium substrate is 2.2, and thickness is 0.127mm, and model is Luo JieThis substrate of 5880.
Further, the diameter of described plated-through hole is 0.2mm.
Beneficial effect:
(1) antenna in the utility model is on a straight microstrip line, directly to connect rectangular radiation patch listUnit, it is simple in structure, and the netted merit of having abandoned in traditional microstrip feed network is divided feeding network and impedanceConverter is to reduce feeder loss.
(2) micro-strip array antenna of this structure is owing to having reduced a lot of merits point minor matters and impedance transformation minor matters,Thereby greatly reduce feeder loss, especially at millimeter wave frequency band, improved the efficiency of antenna.
(3) radiation coefficient of rectangular radiation patch unit is unit paster radiant power and the ratio of input power,Wherein radiant power is that input power deducts reflection power and through-put power, the radiation of rectangular radiation patch unitCoefficient can be determined by the wide variety of each rectangular patch in a wider scope, to meet given pairThe amplitude weighting that lobe requires.
(4) the millimeter wave frequency band micro-strip array antenna the utility model proposes have section low, simple in structure,Efficiency high, is applicable to automobile collision avoidance radar and needs the application scenarios of higher gain low profile antenna,There is very strong engineering using value.
Brief description of the drawings
Fig. 1 is the front of 77GHz band microstrip comb arrays antenna structure view antenna.
Fig. 2 is the back side of 77GHz band microstrip comb arrays antenna structure view antenna.
Fig. 3 is the front of 77GHz band microstrip comb arrays antenna structure view Waveguide-microbelt transition portion.
Fig. 4 is the back side of 77GHz band microstrip comb arrays antenna structure view Waveguide-microbelt transition portion.
Fig. 5 is broad beam microband antenna unit standing wave simulation result.
Fig. 6 is the H face directional diagram at center of antenna frequency 76.5GHz place.
Fig. 7 is the E face directional diagram at center of antenna frequency 76.5GHz place.
Fig. 8 is the H face directional diagram at antenna lower side frequency 76GHz place.
Fig. 9 is the E face directional diagram at antenna lower side frequency 76GHz place.
Figure 10 is the H face directional diagram at antenna upper side frequency 77GHz place.
Figure 11 is the E face directional diagram at antenna upper side frequency 77GHz place.
1-Waveguide-microbelt transition portion; 2-Waveguide-microbelt transition portion; 3-medium substrate; 11-waveguide short face;12-chip unit; 13-WR12 standard waveguide feeding interface; 14-plated-through hole; The straight feeder line of the micro-band of 21-; 22-Rectangular radiation patch.
Detailed description of the invention
Below in conjunction with the accompanying drawing embodiment that develops simultaneously, the utility model is described in detail.
The utility model provides a kind of millimeter wave microstrip comb arrays antenna, a kind of millimeter wave microstrip pectination battle arrayArray antenna, as Figure 1-4, described array antenna is mainly by Waveguide-microbelt transition portion 1, pectination radiation battle arrayArray antenna 2 and medium substrate 3 form, described Waveguide-microbelt transition portion 1 mainly by waveguide short face 11,Chip unit 12 and WR12 standard waveguide feeding interface 13 form, and described waveguide short face 11 sticks on JieThe front of matter substrate 3, described waveguide short face 11 is provided with plated-through hole 14, and plated-through hole 14 runs throughMedium substrate 3 is connected with ground, and chip unit 12 is bonded in the back side of medium substrate 3, described WR12 standardWaveguide feed interface 13 covering plaster blade units 12; Pectination radiant array antenna 2 comprises a straight feeder line 21 of micro-bandWith radiation patch 22, one end of the straight feeder line 21 of described micro-band connects radiation patch 22 arrays; Described micro-band is straightOn the other end of feeder line 21, cover described chip unit 12. The work wave mode of being expert at, main beam pointing departs from methodLine direction (because each chip unit presents little discontinuity in array, therefore produces incidence waveA little reflection. If require the normal direction of beam position in battle array, need ask the spacing between unit to be/ 2nd waveguide wavelengths, the mirror field of each paster will be at input with superimposed. For fear of inputEnd reflectance factor is excessive, conventionally requires spacing between the unit of row ripple battle array to be greater than or less than waveguide wavelength half.At this moment the main beam pointing of antenna array is by the normal direction at array not); On medium substrate, covering copper adds gold-plated thickDegree is 50 microns; Radiating curtain adopts and is uniformly distributed.
The length of described rectangular radiation patch 22 is 1/2nd resonance wavelengths, and the spacing between unit is about two/ mono-waveguide wavelength, so that antenna element is identical.
The dielectric constant of described medium substrate is 2.2, and thickness is 0.127mm, and model is Rogers 5880 baseSheet.
The diameter of described plated-through hole 15 is 0.2mm.
A kind of millimeter wave microstrip comb arrays antenna in example, is shown in Fig. 1-4. In figure, mark each portion of antennaThe physical dimension of dividing, unit is mm. This antenna is made up of Waveguide-microbelt transition portion and pectination radiating curtain.It is 2.2 that the radiation patch array of antenna is printed on a dielectric constant, the Rogers5880 that thickness is 0.127mmOn medium substrate. Covering copper, to add gold plating thickness be 50 microns. Radiating curtain adopts and is uniformly distributed. Waveguide-microbelt mistakeCross part, waveguide short face adopts plated-through hole to connect ground, through-hole diameter 0.2mm. Antenna adopts WR12Standard waveguide interface is from back feed.
Its test result is as follows:
Fig. 5 is the test result of antenna input port return loss, and-10dB input impedance bandwidth is 5.4GHz,Corresponding frequency band is 74GHz-79.4GHz.
Fig. 6-7 have provided E face and the H face directional diagram of antenna at center frequency point 76.5GHz place, H ground roll bundleWidth is 4.4 degree, and E ground roll beam width is 48 degree, and secondary lobe is-9.6dB. Fig. 8-9 have provided lower side frequency 76GHzE face and the H face directional diagram at place, H ground roll beam width is 4.4 degree, E ground roll beam width is 46 degree, secondary lobeFor-9.9dB. Figure 10-11 have provided E face and the H face directional diagram at upper side frequency 77GHz place, H ground roll beamwidthDegree is 4.5 degree, and E ground roll beam width is 45 degree, and secondary lobe is-10.5dB.
In sum, these are only preferred embodiment of the present utility model, be not intended to limit this practicalityNovel protection domain. All within spirit of the present utility model and principle, any amendment of doing, be equal toReplacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (4)
1. a millimeter wave microstrip comb arrays antenna, is characterized in that, described array antenna is mainly by waveguideMicrostrip transition part (1), pectination radiant array antenna (2) and medium substrate (3) composition, described waveguide is micro-Band transition portion (1) is mainly by waveguide short face (11), chip unit (12) and WR12 standard waveguide feedbackElectrical interface (13) composition, described waveguide short face (11) sticks on the front of medium substrate (3), described inWaveguide short face (11) is provided with plated-through hole (14), and plated-through hole (14) runs through medium substrate (3)Be connected with ground, chip unit (12) is bonded in the back side of medium substrate (3), described WR12 standard waveguideFeeding interface (13) covering plaster blade unit (12); Pectination radiant array antenna (2) comprises that a micro-band directly presentsLine (21) and radiation patch (22), one end of the straight feeder line of described micro-band (21) connects radiation patch (22)Array; On the other end of the straight feeder line of described micro-band (21), cover described chip unit (12).
2. a kind of millimeter wave microstrip comb arrays antenna as claimed in claim 1, is characterized in that, radiation is pastedThe length of sheet (22) is 1/2nd resonance wavelengths, and the spacing between adjacent radiation paster (22) is about two pointsOne of waveguide wavelength.
3. a kind of millimeter wave microstrip comb arrays antenna as claimed in claim 1, is characterized in that, institute gives an account ofThe dielectric constant of matter substrate is 2.2, and thickness is 0.127mm, and model is Rogers 5880 substrate.
4. a kind of millimeter wave microstrip comb arrays antenna as claimed in claim 1, is characterized in that described goldThe diameter of genusization through hole is 0.2mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201521089972.9U CN205264857U (en) | 2015-12-24 | 2015-12-24 | Millimeter wave microstrip pectination array antenna |
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| CN201521089972.9U CN205264857U (en) | 2015-12-24 | 2015-12-24 | Millimeter wave microstrip pectination array antenna |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107317097A (en) * | 2017-07-03 | 2017-11-03 | 昆山睿翔讯通通信技术有限公司 | A kind of millimeter wave array and non-millimeter wave integration antenna |
| CN108267721A (en) * | 2016-12-30 | 2018-07-10 | 北京行易道科技有限公司 | Radar and the vehicles |
| CN109428151A (en) * | 2017-08-21 | 2019-03-05 | 比亚迪股份有限公司 | Antenna element, trailer-mounted radar and automobile |
| CN109428162A (en) * | 2017-08-21 | 2019-03-05 | 比亚迪股份有限公司 | Antenna element, trailer-mounted radar and automobile |
| CN109428150A (en) * | 2017-08-21 | 2019-03-05 | 比亚迪股份有限公司 | Antenna element, trailer-mounted radar and automobile |
| CN109428175A (en) * | 2017-08-21 | 2019-03-05 | 比亚迪股份有限公司 | Antenna element, trailer-mounted radar and automobile |
| CN109428163A (en) * | 2017-08-21 | 2019-03-05 | 比亚迪股份有限公司 | Antenna element, trailer-mounted radar and automobile |
| CN109428165A (en) * | 2017-08-21 | 2019-03-05 | 比亚迪股份有限公司 | Antenna element, trailer-mounted radar and automobile |
| CN109428154A (en) * | 2017-08-21 | 2019-03-05 | 比亚迪股份有限公司 | Antenna element, trailer-mounted radar and automobile |
| CN109428152A (en) * | 2017-08-21 | 2019-03-05 | 比亚迪股份有限公司 | Antenna element, trailer-mounted radar and automobile |
| CN109428176A (en) * | 2017-08-21 | 2019-03-05 | 比亚迪股份有限公司 | Antenna element, trailer-mounted radar and automobile |
| CN109428153A (en) * | 2017-08-21 | 2019-03-05 | 比亚迪股份有限公司 | Antenna element, trailer-mounted radar and automobile |
| CN110741273A (en) * | 2016-12-29 | 2020-01-31 | 雷达视科技有限公司 | Antenna array |
| CN111755819A (en) * | 2019-03-29 | 2020-10-09 | 通用汽车环球科技运作有限责任公司 | Inverted microstrip traveling wave patch array antenna system |
| CN113690605A (en) * | 2021-08-24 | 2021-11-23 | 上海莫吉娜智能信息科技有限公司 | Microstrip array antenna system based on 77GHz millimeter wave radar |
-
2015
- 2015-12-24 CN CN201521089972.9U patent/CN205264857U/en active Active
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110741273B (en) * | 2016-12-29 | 2024-02-02 | 雷达视科技有限公司 | Antenna array |
| CN110741273A (en) * | 2016-12-29 | 2020-01-31 | 雷达视科技有限公司 | Antenna array |
| CN108267721A (en) * | 2016-12-30 | 2018-07-10 | 北京行易道科技有限公司 | Radar and the vehicles |
| CN107317097B (en) * | 2017-07-03 | 2020-01-17 | 昆山睿翔讯通通信技术有限公司 | Millimeter wave array and non-millimeter wave integrated antenna |
| CN107317097A (en) * | 2017-07-03 | 2017-11-03 | 昆山睿翔讯通通信技术有限公司 | A kind of millimeter wave array and non-millimeter wave integration antenna |
| CN109428150A (en) * | 2017-08-21 | 2019-03-05 | 比亚迪股份有限公司 | Antenna element, trailer-mounted radar and automobile |
| CN109428163A (en) * | 2017-08-21 | 2019-03-05 | 比亚迪股份有限公司 | Antenna element, trailer-mounted radar and automobile |
| CN109428165A (en) * | 2017-08-21 | 2019-03-05 | 比亚迪股份有限公司 | Antenna element, trailer-mounted radar and automobile |
| CN109428154A (en) * | 2017-08-21 | 2019-03-05 | 比亚迪股份有限公司 | Antenna element, trailer-mounted radar and automobile |
| CN109428152A (en) * | 2017-08-21 | 2019-03-05 | 比亚迪股份有限公司 | Antenna element, trailer-mounted radar and automobile |
| CN109428176A (en) * | 2017-08-21 | 2019-03-05 | 比亚迪股份有限公司 | Antenna element, trailer-mounted radar and automobile |
| CN109428153A (en) * | 2017-08-21 | 2019-03-05 | 比亚迪股份有限公司 | Antenna element, trailer-mounted radar and automobile |
| CN109428175A (en) * | 2017-08-21 | 2019-03-05 | 比亚迪股份有限公司 | Antenna element, trailer-mounted radar and automobile |
| CN109428162A (en) * | 2017-08-21 | 2019-03-05 | 比亚迪股份有限公司 | Antenna element, trailer-mounted radar and automobile |
| CN109428151A (en) * | 2017-08-21 | 2019-03-05 | 比亚迪股份有限公司 | Antenna element, trailer-mounted radar and automobile |
| CN111755819A (en) * | 2019-03-29 | 2020-10-09 | 通用汽车环球科技运作有限责任公司 | Inverted microstrip traveling wave patch array antenna system |
| CN113690605A (en) * | 2021-08-24 | 2021-11-23 | 上海莫吉娜智能信息科技有限公司 | Microstrip array antenna system based on 77GHz millimeter wave radar |
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