CN109462028A - A kind of radio-frequency micro electromechanical microstrip antenna - Google Patents
A kind of radio-frequency micro electromechanical microstrip antenna Download PDFInfo
- Publication number
- CN109462028A CN109462028A CN201811574127.9A CN201811574127A CN109462028A CN 109462028 A CN109462028 A CN 109462028A CN 201811574127 A CN201811574127 A CN 201811574127A CN 109462028 A CN109462028 A CN 109462028A
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- pinboard
- central area
- radio
- radiation patch
- patch
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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
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
- H01Q19/104—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces using a substantially flat reflector for deflecting the radiated beam, e.g. periscopic antennas
-
- 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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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Waveguide Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
The invention discloses a kind of radio-frequency micro electromechanical microstrip antennas, belong to wireless communication technology field.It includes metal outer frame and microband antenna unit, and microband antenna unit includes the first pinboard, the second pinboard and third pinboard；It is equipped with the metallic shielding structure for surrounding respective pinboard central area on three pinboards, realizes the perpendicular interconnection of metallic shielding structure between three pinboards by BGA interconnection structure；The front of first pinboard is equipped with the first radiation patch；Second pinboard is equipped with airport and parasitic patch；The front of third pinboard is equipped with the second radiation patch, and the back side is equipped with reflecting surface；Power feed hole and ground hole are equipped in the central area of third pinboard.The present invention has the characteristics that low section, high-gain, high bandwidth, can solve the low problem of high dielectric constant semiconductor substrate low section microstrip antenna narrow bandwidth, gain.
Description
Technical field
The present invention relates to wireless communication technology fields, particularly relate to a kind of radio-frequency micro electromechanical microstrip antenna.
Background technique
With the continuous development of the communication technology, electromagnetic wave has gradually developed to radio frequency and microwave model from low frequency and high-frequency range
It encloses.Traditional antenna technology, as electromagnetic horn, log-periodic antenna, Cassegrain antenna, yagi aerial, reflector antenna exist
In use, there are volumes it is big, section height is high, mounting structure is big the problems such as, and the microstrip antenna based on semiconductor substrate is compared
In traditional antenna, have many advantages, such as low section, small size, easy of integration, so, it is got over based on the microstrip antenna of semiconductor substrate
Applied more in fields such as satellite communication, mobile communication.
Microstrip antenna based on semiconductor substrate refers to and produces metal radiation patch on a face of dielectric substrate,
The metal surface of emission is produced on another face, and forms antenna feed point on substrate by way of through-hole.In the prior art,
The substrate of microstrip antenna generallys use PCB printed board, and that there are millimeter wave band technique machining accuracies is low, loss is high, lines and hole
The problems such as machinable size is big.High dielectric constant semiconductor substrate, such as glass, silicon, millimeter wave loss smooth with surface
Tangent low advantage in angle is punched on these substrates using MEMS technology, and there is precision height, millimeter wave low advantage is lost.
But since the ratio PCB printed board of the dielectric constant of the substrates such as glass, silicon is big, it will lead to low section microstrip antenna
The reduction of gain, the reduction of bandwidth.Meanwhile in order to inhibit multipath effect, antenna used in the communications field is mostly circular polarisation
Antenna, high dielectric constant substrate cause array antenna to generate surface wave effect, deteriorate array antenna axis ratio.
Summary of the invention
In view of this, the present invention proposes a kind of radio-frequency micro electromechanical microstrip antenna, with low section, high-gain, high bandwidth
The characteristics of.
To achieve the goals above, the technical solution adopted by the present invention are as follows:
A kind of radio-frequency micro electromechanical microstrip antenna comprising the micro-strip that metal outer frame and the rectangle inside metal outer frame are structured the formation
Antenna element, the microband antenna unit include the first pinboard, the second pinboard and third pinboard from top to bottom；
The metallic shielding structure for surrounding respective pinboard central area is equipped on first, second, third pinboard, the
One, the metallic shielding structure on the second pinboard includes each metallic shield circle for being located at pinboard tow sides, with
And multiple metals filling shield opening of tow sides metallic shield circle, third switching are distributed and connected around pinboard central area
Metallic shielding structure on plate include be located at the positive metallic shield circle of pinboard, and around the distribution of pinboard central area and
The multiple metals filling shield opening being connect with front metal shielding ring, between the first, second pinboard and second, third switching
The perpendicular interconnection of metallic shielding structure is realized between plate by BGA interconnection structure；
The front center region of first pinboard is equipped with the first radiation patch；
The central area of second pinboard is equipped with multiple airports of rectanglar arrangement, in the front or the back side of the second pinboard
In central area, it is additionally provided with multiple parasitic patch around airport layout area；
The front center region of the third pinboard is equipped with the second radiation patch, and the back side is equipped with reflecting surface, and the reflecting surface covers
The distributed areas of lid third switching sheetmetal filling shield opening are simultaneously electrically connected with these metals filling shield opening, on the reflecting surface
With feed hollowed out area；In the central area of third pinboard be equipped with power feed hole and ground hole, the upper end of the power feed hole with
The connection of second radiation patch, the lower end of power feed hole is exposed in the feed hollowed out area, the ground hole respectively with the second spoke
Patch is penetrated to connect with reflecting surface.
Specifically, there are four the parasitic patch is total, and it is located at the second switching back airport layout area one by one
At four edges.
Specifically, the central area of first, second or third pinboard is square, round or ellipse, it is described
Feed hollowed out area be square, round or ellipse.
Specifically, the phase center of second radiation patch, the geometric center of third pinboard central area and institute
The coincidence of ground hole three position is stated, the power feed hole is located at the geometric center of the feed hollowed out area.
Specifically, the first, second or third pinboard of each microband antenna unit is one piece of whole plate in the metal outer frame,
The metallic shield circle of each microband antenna unit communicates with each other in the whole plate one side, so that except each microband antenna unit in this one side
Outside central area, other regions are covered comprehensively by metal shield materials or are covered in a manner of lattice.
Specifically, the shape of first radiation patch, the second radiation patch or any parasitic patch is round, ellipse
Or polygon.
Specifically, the material of first, second or third pinboard is silicon, GaAs, quartz or photosensitive glass.
Beneficial effect by adopting the above technical scheme is:
1, microstrip antenna of the present invention is provided with airport on the second pinboard, which is located at the first radiation patch and second
The centre of radiation patch increases the air gap between the first radiation patch and the second radiation patch, reduces the second switching
The effective dielectric constant of plate, so as to increase the bandwidth of antenna.In addition, airport also reduces after the first radiation patch to spoke
The dielectric loss penetrated, to enhance the gain of antenna.
2, microstrip antenna of the present invention is provided with parasitic patch around the second pinboard airport layout area, these are posted
Raw patch and the first radiation patch and the second radiation patch form LC resonance circuit, so as to further expand aerial band
It is wide.
3, traditional microstrip antenna bandwidth only has 4%, if increasing the beamwidth of antenna, it is necessary to increase antenna substrate thickness, lead to day
Line section height is high.The present invention reduces substrate by way of airport is arranged on the pinboard between two radiation patch
Effective dielectric constant, improve the beamwidth of antenna, meanwhile, setting parasitic patch further enhance the beamwidth of antenna, so as to
Under the premise of keeping low section, the broadband performance of antenna is realized.
In short, the present invention has the characteristics that low section, high-gain, high bandwidth, it is semiconductor-based to can solve high dielectric constant
The low problem of plate low section microstrip antenna narrow bandwidth, gain.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the overall structure diagram of radio-frequency micro electromechanical microstrip antenna in the embodiment of the present invention；
Fig. 2 is the side view of a microband antenna unit in Fig. 1；
Fig. 3 is the positive structure schematic of the first pinboard in Fig. 1；
Fig. 4 is the structure schematic diagram of the first pinboard in Fig. 1；
Fig. 5 is the positive structure schematic of the second pinboard in Fig. 1；
Fig. 6 is the structure schematic diagram of the second pinboard in Fig. 1；
Fig. 7 is the positive structure schematic of third pinboard in Fig. 1；
Fig. 8 is the structure schematic diagram of third pinboard in Fig. 1.
In figure: 1, the first pinboard；2, the second pinboard；3, third pinboard；4, microband antenna unit；5, the first metal
Shielding ring；6, the second metallic shield circle；7, third metallic shield circle；8, the 4th metallic shield circle；9, fifth metal shielding ring；
10, reflecting surface；11, the first BGA interconnection structure；12, the 2nd BGA interconnection structure；13, the first metal fills shield opening；14, second
Metal fills shield opening；15, third metal fills shield opening；16, the first radiation patch；17, the second radiation patch；18, it feeds
Hole；19, ground hole；20, metal outer frame；21, airport；22, the first parasitic patch；23, the second parasitic patch；24, third is posted
Raw patch；25, the 4th parasitic patch.
Specific embodiment
Below in conjunction with attached drawing, further clear, complete description is done to technical solution of the present invention.Obviously, below
Specific embodiment be only section Example of the invention, instead of all the embodiments.Based on following embodiments, ability
Domain those of ordinary skill every other embodiment obtained without making creative work, belongs to the present invention
The range of protection.
As shown in Fig. 1~8, a kind of radio-frequency micro electromechanical microstrip antenna comprising metal outer frame 20 and be located at metal outer frame
The microband antenna unit 4 that rectangle inside 20 is structured the formation, the microband antenna unit 4 include the first pinboard 1, second from top to bottom
Pinboard 2 and third pinboard 3；
The metallic shielding structure for surrounding respective pinboard central area is equipped on first, second, third pinboard, the
One, the metallic shielding structure on the second pinboard include each metallic shield circle 5 for being located at pinboard tow sides, 6,
7,8, and around pinboard central area be distributed and connect tow sides metallic shield circle multiple metals filling shield opening 13,
14, the metallic shielding structure on third pinboard includes being located at the positive metallic shield circle 9 of pinboard, and in pinboard
Heart area distribution and the multiple metals connecting with front metal shielding ring fill shield opening 15, between the first, second pinboard with
And the perpendicular interconnection of metallic shielding structure is realized between second, third pinboard by BGA interconnection structure 11,12；
The front center region of first pinboard 1 is equipped with the first radiation patch 16；
The central area of second pinboard 2 be equipped with rectanglar arrangement multiple airports 21, the second pinboard front or
In the region of back center, it is additionally provided with multiple parasitic patch 22,23,24,25 around 21 layout area of airport；
The front center region of the third pinboard 3 is equipped with the second radiation patch 17, and the back side is equipped with reflecting surface 10, the reflection
The distributed areas of face covering third switching sheetmetal filling shield opening are simultaneously electrically connected, the reflection with these metals filling shield opening
There is feed hollowed out area on face；Power feed hole 18 and ground hole 19, the power feed hole are equipped in the central area of third pinboard
18 upper end is connect with the second radiation patch 17, and the lower end of power feed hole 18 is exposed in the feed hollowed out area, the ground connection
Hole 19 is connect with the second radiation patch 17 and reflecting surface 10 respectively, and all patches are sheet metal.
Specifically, the first metallic shield circle 5 and the second metallic shield circle 6 are being located at first pinboard 1 just
Top and underface, the first metal filling shield opening 13 are located in the first pinboard；
Third metallic shield circle 7 and the 4th metallic shield circle 8 are located at the surface and underface of second pinboard 2,
The second metal filling shield opening 14 is located in the second pinboard；
Fifth metal shielding ring 9 and reflecting surface 10 are located at the surface and underface of the third pinboard 3, third metal
Filling shield opening 15 is located in third pinboard；
First BGA interconnection structure 11 is located among the first pinboard 1 and the second pinboard 2, and welding surface is respectively the second metal screen
Cover circle 6 and third metallic shield circle 7；
2nd BGA interconnection structure 12 is located among the second pinboard 2 and third pinboard 3, and welding surface is respectively the 4th metal screen
Cover circle 8 and fifth metal shielding ring 9.
Specifically, there are four the parasitic patch is total, and it is located at the second switching back airport layout area one by one
At four edges.
Specifically, the central area of first, second or third pinboard is square, round or ellipse, it is described
Feed hollowed out area be square, round or ellipse.Preferably, the central area of the first, second or third pinboard is positive
Rectangular, feed hollowed out area is circle.
Specifically, the phase center of second radiation patch, the geometric center of third pinboard central area and institute
The coincidence of ground hole three position is stated, the power feed hole is located at the geometric center of the feed hollowed out area.Setting can be in this way
Guarantee that antenna has preferable performance.
Specifically, the first, second or third pinboard of each microband antenna unit is one piece of whole plate in the metal outer frame,
The metallic shield circle of each microband antenna unit communicates with each other in the whole plate one side, so that except each microband antenna unit in this one side
Outside central area, other regions are covered comprehensively by metal shield materials or are covered in a manner of lattice.
Specifically, the shape of first radiation patch, the second radiation patch or any parasitic patch is round, ellipse
Or polygon.Preferably, the shape of the first radiation patch, the second radiation patch or any parasitic patch is circle.
Specifically, the material of first, second or third pinboard is silicon, GaAs, quartz or photosensitive glass.
Switching plate material in the embodiment of the present invention can be the materials such as silicon, GaAs, quartz, photosensitive glass.Pinboard
High dielectric constant result in the increase after the first radiation patch to dielectric loss, cause the reduction of antenna gain；And it transfers
The relatively thin thickness of plate itself, results in the reduction of bandwidth.Therefore, in the embodiment of the present invention microstrip antenna bandwidth and switching
The thickness of plate is inversely proportional, and the gain of microstrip antenna and the thickness of pinboard are directly proportional.In order to obtain preferable antenna performance, Ying Bao
The thickness for demonstrate,proving microband antenna unit is no more than 1mm.
In the embodiment of the present invention, the thickness of the first metallic shield circle 5 can be higher than the first radiation patch 16；Meanwhile in order to
Guarantee antenna performance, the first radiation patch 16 should be away as far as possible the first metallic shield circle 5, and be located at the first metallic shield circle
5 center.
In microstrip antenna of the present invention, the presence of the second pinboard 2 and airport 21 increases the first radiation patch and third
Air gap between radiation patch reduces the effective dielectric constant of microstrip antenna, increases the beamwidth of antenna, reduces simultaneously
The dielectric loss of first radiation patch, 16 backward radiation, improves the gain of antenna.Meanwhile second is provided on pinboard 2
One parasitic patch 22, the second parasitic patch 23, third parasitic patch 24, the 4th parasitic patch 25, can be with the first radiation patch
16, the second radiation patch 17 forms LC resonance circuit, has further expanded the beamwidth of antenna.
It should be noted that the foregoing is merely illustrative of the preferred embodiments of the present invention, it is not intended to limit of the invention
Protection scope.Any modification, equivalent substitution, improvement and etc. done within the spirit and principles of the present invention are all contained in this
In the protection scope of invention.
Claims (7)
1. a kind of radio-frequency micro electromechanical microstrip antenna, which is characterized in that the square including metal outer frame and inside metal outer frame
The microband antenna unit that shape is structured the formation, the microband antenna unit include the first pinboard, the second pinboard and third from top to bottom
Pinboard；
The metallic shielding structure for surrounding respective pinboard central area is equipped on first, second, third pinboard, the
One, the metallic shielding structure on the second pinboard includes each metallic shield circle for being located at pinboard tow sides, with
And multiple metals filling shield opening of tow sides metallic shield circle, third switching are distributed and connected around pinboard central area
Metallic shielding structure on plate include be located at the positive metallic shield circle of pinboard, and around the distribution of pinboard central area and
The multiple metals filling shield opening being connect with front metal shielding ring, between the first, second pinboard and second, third switching
The perpendicular interconnection of metallic shielding structure is realized between plate by BGA interconnection structure；
The front center region of first pinboard is equipped with the first radiation patch；
The central area of second pinboard is equipped with multiple airports of rectanglar arrangement, in the front or the back side of the second pinboard
In central area, it is additionally provided with multiple parasitic patch around airport layout area；
The front center region of the third pinboard is equipped with the second radiation patch, and the back side is equipped with reflecting surface, and the reflecting surface covers
The distributed areas of lid third switching sheetmetal filling shield opening are simultaneously electrically connected with these metals filling shield opening, on the reflecting surface
With feed hollowed out area；In the central area of third pinboard be equipped with power feed hole and ground hole, the upper end of the power feed hole with
The connection of second radiation patch, the lower end of power feed hole is exposed in the feed hollowed out area, the ground hole respectively with the second spoke
Patch is penetrated to connect with reflecting surface.
2. a kind of radio-frequency micro electromechanical microstrip antenna according to claim 1, which is characterized in that the parasitic patch shares four
It is a, and be located at the four edges of the second switching back airport layout area one by one.
3. a kind of radio-frequency micro electromechanical microstrip antenna according to claim 1, which is characterized in that described first, second or
The central area of three pinboards is square, round or ellipse, and the feed hollowed out area is square, is round or oval
Shape.
4. a kind of radio-frequency micro electromechanical microstrip antenna according to claim 1, which is characterized in that second radiation patch
Phase center, the geometric center of third pinboard central area and ground hole three position are overlapped, the feed hole location
At the geometric center of the feed hollowed out area.
5. a kind of radio-frequency micro electromechanical microstrip antenna according to claim 1, which is characterized in that each micro- in the metal outer frame
The first, second or third pinboard with antenna element is one piece of whole plate, the metal of each microband antenna unit in the whole plate one side
Shielding ring communicates with each other, so that other regions are by metallic shield in this one side in addition to the central area of each microband antenna unit
Material is covered comprehensively or is covered in a manner of lattice.
6. a kind of radio-frequency micro electromechanical microstrip antenna according to claim 1, which is characterized in that first radiation patch,
The shape of second radiation patch or any parasitic patch is round, ellipse or polygon.
7. a kind of radio-frequency micro electromechanical microstrip antenna according to claim 1, which is characterized in that described first, second or
The material of three pinboards is silicon, GaAs, quartz or photosensitive glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811574127.9A CN109462028B (en) | 2018-12-21 | 2018-12-21 | Radio frequency micro-electromechanical microstrip antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811574127.9A CN109462028B (en) | 2018-12-21 | 2018-12-21 | Radio frequency micro-electromechanical microstrip antenna |
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| Publication Number | Publication Date |
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| CN109462028A true CN109462028A (en) | 2019-03-12 |
| CN109462028B CN109462028B (en) | 2022-07-12 |
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| CN201811574127.9A Active CN109462028B (en) | 2018-12-21 | 2018-12-21 | Radio frequency micro-electromechanical microstrip antenna |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111029734A (en) * | 2019-11-19 | 2020-04-17 | 航天恒星科技有限公司 | Ultra-wideband end-fire antenna |
| CN113922072A (en) * | 2021-09-27 | 2022-01-11 | 嘉兴恩碧技电气有限公司 | Non-contact data transmission receiving antenna |
| CN114384473A (en) * | 2021-11-30 | 2022-04-22 | 广东德赛矽镨技术有限公司 | Data integration system and method for multi-channel analog data acquisition and output |
| CN114792881A (en) * | 2022-05-18 | 2022-07-26 | 赛莱克斯微系统科技（北京）有限公司 | Micro-electromechanical millimeter wave antenna |
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| CN114792881A (en) * | 2022-05-18 | 2022-07-26 | 赛莱克斯微系统科技（北京）有限公司 | Micro-electromechanical millimeter wave antenna |
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| CN109462028B (en) | 2022-07-12 |
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