CN112652884A - Novel millimeter wave anti-interference microstrip array antenna - Google Patents
Novel millimeter wave anti-interference microstrip array antenna Download PDFInfo
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- CN112652884A CN112652884A CN202010936226.8A CN202010936226A CN112652884A CN 112652884 A CN112652884 A CN 112652884A CN 202010936226 A CN202010936226 A CN 202010936226A CN 112652884 A CN112652884 A CN 112652884A
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- 239000011358 absorbing material Substances 0.000 claims abstract description 8
- 238000003491 array Methods 0.000 claims 2
- 230000005855 radiation Effects 0.000 abstract description 13
- 238000010168 coupling process Methods 0.000 abstract description 7
- 238000005859 coupling reaction Methods 0.000 abstract description 7
- 230000008878 coupling Effects 0.000 abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
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- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000012545 processing Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/526—Electromagnetic shields
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
- H01Q21/065—Patch antenna array
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
Abstract
The invention relates to the technical field of array antennas and discloses a novel millimeter wave anti-interference microstrip array antenna which comprises a series-fed receiving antenna array, a series-fed transmitting antenna array and a radiation unit, wherein the series-fed receiving antenna array and the series-fed transmitting antenna array are arranged outside an anti-interference shielding case, a radio frequency chip is arranged inside the anti-interference shielding case, the radio frequency chip is electrically connected with the transmitting antenna through a feed network and a feed line through hole, the radiation unit adopts a square microstrip patch, and the radiation units are connected in series to form a microstrip array. The invention forms absorption efficiency by the plastic wave-absorbing material loaded with carbon powder, and effectively absorbs the mutual coupling energy of the feed network; by covering the chip and the peripheral active circuit, the wall thickness of the radiation interference shielding cover is effectively reduced to be one fourth of the working wavelength of antenna radiation, and the influence of reflection in the cavity on the feed network can be reduced.
Description
Technical Field
The invention relates to the technical field of array antennas, in particular to a novel millimeter wave anti-interference microstrip array antenna.
Background
As the integration of electronic devices increases, the volume of communication devices becomes smaller and smaller. The microstrip antenna has the characteristics of small volume, light weight, low section, easy installation, conformal carrier surface and the like, and the feed network and the antenna are manufactured together and are suitable for large-scale production by using a printed circuit technology. The microstrip antenna and the active device or the circuit are integrated into a whole, and the all-plane integrated transceiving front-end module can be realized. Therefore, the microstrip antenna technology has attracted general attention and has been widely applied to the fields of millimeter wave radar, communication, guidance, and the like.
Compared with the situation that a single antenna unit is difficult to meet the increasing performance requirement, the antenna array is an effective measure for enhancing the antenna performance, and an array antenna formed by a plurality of antenna units through a feed network can generate a flexible directional diagram and can generate higher gain, so that the feed network energy and phase distribution accuracy of the array antenna must be ensured. With the trend of miniaturization of devices, it is a difficult task to highly integrate an antenna and an active device without significantly affecting the gain and the pattern of the antenna. Firstly, a feeder line can radiate, so that an interference directional diagram reduces the gain, secondly, the energy leakage of an active circuit and a chip can generate very harmful influence on the performance of an antenna, and for rear-end signal processing, the coupling between a receiving antenna and a transmitting antenna influences in-band modulation, so that the system cannot work normally.
In the design of the microstrip array antenna, it is often assumed that the antenna operates under an ideal condition without considering the radiation influence of active circuits such as a feed network and a chip, which may cause deviation between the actual condition and the expected condition of the array antenna, and in many cases, the deviation caused by mutual coupling may not even be tolerated. Especially, under the development trend of miniaturization of array antennas, radio frequency anti-interference becomes a key problem for restricting the improvement of the performance of the array antennas. The traditional shielding measures are based on a metal cavity, and the strong internal reflection crosstalk brings serious influence on the amplitude-phase distribution of the feed network.
In order to solve the problems that the level of a directional diagram side lobe is increased and the gain is reduced due to the mutual coupling of a microstrip array antenna and a feed network, and the antenna cannot normally work due to the interference caused by the energy leakage of an active circuit and a chip, the invention provides a novel millimeter wave anti-coupling interference microstrip array antenna design.
Disclosure of Invention
The invention aims to provide a novel millimeter wave anti-interference microstrip array antenna.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a novel anti-interference microstrip array antenna of millimeter wave, includes that the receiving antenna array is presented to the cluster, the transmitting antenna array is presented to the cluster and the radiating element is presented, the receiving antenna array is presented to the cluster and the transmitting antenna array is presented to the cluster is presented, the inside radio frequency chip that is provided with of anti-interference shield cover, the radio frequency chip passes through the feed network and runs through feeder clearing hole and transmitting antenna electric connection, the radiating element adopts square microstrip paster, the radiating element is with the form interconnect of establishing ties, constitutes the microstrip array.
Preferably, the number of the series feed receiving antenna array and the number of the series feed transmitting antenna array are both two.
Preferably, the anti-interference shielding cover is made of plastic.
Preferably, the feed network is provided with a series weighted microstrip array antenna made of wave-absorbing materials.
Preferably, the series-fed receiving antenna array is composed of ten rows of antennas, and the series-fed transmitting antenna array is composed of ten rows of antennas with six elements.
Preferably, the wall thickness of the anti-interference shielding case is a quarter wavelength.
The invention provides a novel millimeter wave anti-interference microstrip array antenna. The method has the following beneficial effects:
(1) the absorption efficiency is formed by the plastic wave-absorbing material loaded with carbon powder, so that the mutual coupling energy of the feed network is effectively absorbed;
(2) by covering the chip and the peripheral active circuit, radiation interference is effectively reduced;
(3) the wall thickness of the shielding case is one quarter of the working wavelength of the antenna radiation, so that the influence of the reflection in the cavity on the feed network can be reduced;
(4) the antenna adopts a front feed mode, the feeder is directly connected with the chip, and the height of the feeder and the shielding case is less than half of the working wavelength. Through actual test and comparison with the design, the gain fluctuation in the 3dB wave beam width of the array antenna can be greatly reduced, and the micro-strip array antenna which is weakly interfered with and coupled, miniaturized, low in profile and easy to be conformal to a carrier is well realized.
Drawings
FIG. 1 is a plan view of a novel millimeter wave anti-interference microstrip array antenna according to the present invention;
fig. 2 is a structural diagram of the anti-interference shielding case of the present invention.
In the figure: the feed line through holes are formed in the mode that 1 serial feed receiving antenna array, 2 serial feed transmitting antenna array, 3 feed network, 4 anti-interference shielding cover and 5 feed line.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1-2, the present invention provides a technical solution: a novel millimeter wave anti-interference microstrip array antenna comprises a series feed receiving antenna array 1, a series feed transmitting antenna array 2 and radiating elements, wherein the number of the series feed receiving antenna array 1 and the number of the series feed transmitting antenna array 2 are two, the series feed receiving antenna array 1 consists of ten rows of antennas, the series feed transmitting antenna array 2 consists of ten rows of six antennas, the series feed receiving antenna array 1 and the series feed transmitting antenna array 2 are arranged outside an anti-interference shielding case 4, the anti-interference shielding case 4 is made of plastic materials, a radio frequency chip is arranged inside the anti-interference shielding case 4 and is electrically connected with the transmitting antenna 2 through a feed network 3 and a feed line through hole 5, the feed network 3 is provided with a series weighted microstrip array antenna made of materials, the radiating elements adopt square microstrip absorbing patches, and the radiating elements are connected with each other in series, the micro-strip array is formed, feed excitation is carried out on the first unit, energy is sequentially transmitted backwards, amplitude weighting is carried out by controlling the size of the square patch, the distance between the two adjacent units is adjusted to enable the phase to be the same, the low-side-lobe array is formed, the plastic wave-absorbing material forms absorption efficiency by loading carbon powder, the wall thickness of the anti-interference shielding cover 4 is designed to be one-fourth wavelength, the reflection energy in the cavity is enabled to be maximally attenuated in the absorber, and the radiation of a feed network and the influence of chip energy leakage are greatly reduced.
Embodiments of the invention may be performed as follows:
1. the wavelength of the operating signal is determined from the operating frequency of the antenna system and the geometry of the radiation front is determined from the beam width and gain requirements.
2. And designing the width of the square microstrip patch according to the array element number requirement of the array antenna and the tapering distribution requirement of the radiation excitation power of each array element.
3. Considering the length of the microstrip patch, the space between two adjacent units is designed to make the phases of all the units of the series array equal.
4. And designing a feed network according to the comprehensive requirements of the array.
5. The plastic wave-absorbing material with the wall thickness of one fourth of the working wavelength is arranged above the feed network and the chip, and the height of the plastic wave-absorbing material is less than half of the working wavelength.
In conclusion, the absorption efficiency is formed by the plastic wave-absorbing material loaded with the carbon powder, so that the mutual coupling energy of the feed network is effectively absorbed; by covering the chip and the peripheral active circuit, radiation interference is effectively reduced; the wall thickness of the shielding case is one quarter of the working wavelength of the antenna radiation, so that the influence of the reflection in the cavity on the feed network can be reduced; the antenna adopts a front feed mode, the feeder is directly connected with the chip, and the height of the feeder and the shielding case is less than half of the working wavelength. Through actual test and comparison with the design, the gain fluctuation in the 3dB wave beam width of the array antenna can be greatly reduced, and the micro-strip array antenna which is weakly interfered with and coupled, miniaturized, low in profile and easy to be conformal to a carrier is well realized.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a novel anti-interference microstrip array antenna of millimeter wave, includes that the receiving antenna array is presented to the series feed (1), the transmitting antenna array is presented to the series feed (2) and radiating element, its characterized in that: the series-fed receiving antenna array (1) and the series-fed transmitting antenna array (2) are installed outside the anti-interference shielding case (4), a radio frequency chip is arranged inside the anti-interference shielding case (4), the radio frequency chip is electrically connected with the transmitting antenna (2) through the feed network (3) and the feed line through hole (5), the radiating units are square microstrip patches, and the radiating units are connected in series to form a microstrip array.
2. The novel millimeter wave anti-interference microstrip array antenna according to claim 1, wherein: the number of the series-fed receiving antenna arrays (1) and the number of the series-fed transmitting antenna arrays (2) are both two.
3. The novel millimeter wave anti-interference microstrip array antenna according to claim 1, wherein: the anti-interference shielding cover (4) is made of plastic.
4. The novel millimeter wave anti-interference microstrip array antenna according to claim 1, wherein: the feed network (3) is provided with a series weighted microstrip array antenna made of wave absorbing materials.
5. The novel millimeter wave anti-interference microstrip array antenna according to claim 1, wherein: the series-fed receiving antenna array (1) is composed of ten rows of antennas, and the series-fed transmitting antenna array (2) is composed of ten rows of six antennas.
6. The novel millimeter wave anti-interference microstrip array antenna according to claim 1, wherein: the wall thickness of the anti-interference shielding cover (4) is one-quarter wavelength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010936226.8A CN112652884A (en) | 2020-09-08 | 2020-09-08 | Novel millimeter wave anti-interference microstrip array antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010936226.8A CN112652884A (en) | 2020-09-08 | 2020-09-08 | Novel millimeter wave anti-interference microstrip array antenna |
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| CN112652884A true CN112652884A (en) | 2021-04-13 |
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| CN202010936226.8A Pending CN112652884A (en) | 2020-09-08 | 2020-09-08 | Novel millimeter wave anti-interference microstrip array antenna |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113471706A (en) * | 2021-06-30 | 2021-10-01 | 杭州电子科技大学 | Low sidelobe antenna array with parasitic radiation suppression function |
| 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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| CN107611577A (en) * | 2017-09-06 | 2018-01-19 | 上海通趣科技有限公司 | A kind of micro-strip array antenna based on 77GHz millimetre-wave radars |
| CN109244681A (en) * | 2018-10-11 | 2019-01-18 | 上海莫吉娜智能信息科技有限公司 | Micro-strip array antenna system based on 77GHz millimetre-wave radar |
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| CN111316499A (en) * | 2018-12-04 | 2020-06-19 | 深圳市大疆创新科技有限公司 | Millimeter wave antenna structure, microwave rotary radar and movable platform |
| CN211017411U (en) * | 2019-12-30 | 2020-07-14 | 苏州安智汽车零部件有限公司 | Vehicle-mounted radar wave-absorbing shielding cover |
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2020
- 2020-09-08 CN CN202010936226.8A patent/CN112652884A/en active Pending
Patent Citations (7)
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| CN204482165U (en) * | 2015-03-10 | 2015-07-15 | 深圳市中科联合通信技术有限公司 | A kind of WIFI circuit board arrangement with contact pin |
| CN106486766A (en) * | 2016-10-12 | 2017-03-08 | 上海欣国泰信息通信有限公司 | A kind of uncoupling micro-strip array antenna |
| CN107611577A (en) * | 2017-09-06 | 2018-01-19 | 上海通趣科技有限公司 | A kind of micro-strip array antenna based on 77GHz millimetre-wave radars |
| CN109244681A (en) * | 2018-10-11 | 2019-01-18 | 上海莫吉娜智能信息科技有限公司 | Micro-strip array antenna system based on 77GHz millimetre-wave radar |
| CN111316499A (en) * | 2018-12-04 | 2020-06-19 | 深圳市大疆创新科技有限公司 | Millimeter wave antenna structure, microwave rotary radar and movable platform |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113471706A (en) * | 2021-06-30 | 2021-10-01 | 杭州电子科技大学 | Low sidelobe antenna array with parasitic radiation suppression function |
| 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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Application publication date: 20210413 |
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