CN110112542A - A kind of encapsulating antenna for millimeter wave - Google Patents
A kind of encapsulating antenna for millimeter wave Download PDFInfo
- Publication number
- CN110112542A CN110112542A CN201910274799.6A CN201910274799A CN110112542A CN 110112542 A CN110112542 A CN 110112542A CN 201910274799 A CN201910274799 A CN 201910274799A CN 110112542 A CN110112542 A CN 110112542A
- Authority
- CN
- China
- Prior art keywords
- antenna
- millimeter wave
- metal patch
- slot
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/32—Adaptation for use in or on road or rail vehicles
- H01Q1/3208—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used
- H01Q1/3233—Adaptation for use in or on road or rail vehicles characterised by the application wherein the antenna is used particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems
-
- 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
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/378—Combination of fed elements with parasitic elements
- H01Q5/385—Two or more parasitic elements
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- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Waveguide Aerials (AREA)
Abstract
The application belongs to integrated antenna package technical field, more particularly to a kind of encapsulating antenna for millimeter wave.Since current techniques overwhelming majority product uses PCB antenna, so that the increase of product outline size, while bringing the raising of product cost.This application provides a kind of encapsulating antenna for millimeter wave, including metal patch, it is provided with through-hole on the metal patch, microstrip line and several parasitic slots are provided in the through-hole.By the way that through-hole is arranged on metal patch, microstrip line and several parasitic slots are set in through-hole, reduces antenna size, radar performance is turned up, reduce product cost.This application involves the encapsulating antenna for millimeter wave apply the vehicle radar system in 77-81GHz frequency range and realize compact dimensions, high-performance and reduce passive element size, further decrease complete radio frequency system size it is a kind of by antenna be integrated into RF encapsulation in method.
Description
Technical field
The application belongs to integrated antenna package technical field, more particularly to a kind of encapsulating antenna for millimeter wave.
Background technique
Millimeter wave (millimeter wave): wavelength is that 1~10 millimeter of electromagnetic wave claims millimeter wave, it be located at microwave and
The wave-length coverage that far infrared wave overlaps mutually, thus simultaneous the characteristics of there are two types of wave spectrums.The theory and technology of millimeter wave is microwave respectively
Development to low frequency of extension and light wave to high frequency.Compared with light wave, millimeter wave utilizes atmospheric window (millimeter wave and submillimeter wave
When propagating in an atmosphere, certain frequencies for decaying to minimum due to caused by gas molecule resonance absorbing) decaying when propagating
It is small, it is influenced by natural light and infrared source small.
Since SiGe HBT technology and the ever-increasing function of Si CMOS technology and cost reduce so that millimeter wave (mm-
Wave) frequency is to cost using attractive.In recent years, with the rapid development of Automobile Electronic Industry, people are to automobile function
Can demand increasingly increase, millimetre-wave radar will serve as key player in automatic Pilot and requirement to its size appearance increasingly
Miniaturization.
Since current techniques overwhelming majority product uses PCB antenna, so that the increase of product outline size, simultaneously
Bring the raising of product cost.
Summary of the invention
1. technical problems to be solved
Based on using PCB antenna due to current techniques overwhelming majority product, so that the increase of product outline size,
The problem of bringing the raising of product cost simultaneously, this application provides a kind of encapsulating antennas for millimeter wave.
2. technical solution
To achieve the above object, this application provides a kind of encapsulating antenna for millimeter wave, including metal patch,
It is provided with through-hole on the metal patch, microstrip line and several parasitic slots are provided in the through-hole.
Optionally, the parasitic slot includes the first parasitic slot and the second parasitic slot, and the microstrip line, described first is parasitic
Slot, the described second parasitic slot and the metal patch are set on same plane.
Optionally, the through-hole is set to the center of the metal patch.
Optionally, the metal patch is T-shape patch.
Optionally, the T-shape patch is copper sheet, and the length of the copper sheet horizontal sides is 1.3mm, width 1.04mm,
The length of the copper sheet vertical edges is at least 0.12mm, width 0.35mm；
It is 0.04mm to gap between the metal patch.
Optionally, the microstrip line is T-shape patch.
Optionally, the T-shape patch is copper sheet, and the length of the copper sheet horizontal sides is 0.8125mm, and width is
The length of 0.04mm, the copper sheet vertical edges are at least 0.5mm, and width is set as 0.09mm.
Optionally, the parasitic slot is rectangular patch.
Optionally, the parasitic slot is copper bar, and the parasitism slot length is 0.8125mm, width 0.04mm.
Optionally, the metal patch, the microstrip line and several parasitic slot thicknesses are 18um.
3. beneficial effect
Compared with prior art, the beneficial effect of the encapsulating antenna provided by the present application for millimeter wave is:
Encapsulating antenna provided by the present application for millimeter wave, by the way that through-hole is arranged on metal patch, by microstrip line and
Several parasitism slots are set in through-hole, reduce antenna size, radar performance is turned up, reduce product cost.This application involves use
The vehicle radar system in 77-81GHz frequency range is applied in the encapsulating antenna of millimeter wave and is realized compact dimensions, high-performance and is subtracted
Small passive element size further decreases a kind of method that antenna is integrated into RF encapsulation of complete radio frequency system size.
Detailed description of the invention
Fig. 1 is the encapsulating antenna structural schematic diagram for millimeter wave of the application；
In figure: 1- metal patch, 2- through-hole, 3- microstrip line, 4- parasitism slot.
Specific embodiment
Hereinafter, specific embodiment of the reference attached drawing to the application is described in detail, it is detailed according to these
Description, one of ordinary skill in the art can implement the application it can be clearly understood that the application.Without prejudice to the application principle
In the case where, the feature in each different embodiment can be combined to obtain new embodiment, or be substituted certain
Certain features in embodiment, obtain other preferred embodiments.
PCB antenna refers to the part on wireless receiving and the PCB of transmitting.Antenna is a kind of transducer.When transmitting, its handle
The high-frequency current of transmitter is converted into spatial electromagnetic wave；When reception, the electromagnetic wave intercepted and captured from space is converted to high-frequency electrical again by it
It streams into receiver.For design one small-power being applied in radio-frequency recognition system, short-distance wireless transceiver, antenna
Design is pith therein.Good antenna system can make communication distance reach optimum state.There are many type of antenna,
Different applications need different antennas.
Referring to Fig. 1, the application provides a kind of encapsulating antenna for millimeter wave, including metal patch 1, the metal patch
It is provided with through-hole 2 on 1, microstrip line 3 and several parasitic slots 4 are provided in the through-hole 2.
The application increases gap between microstrip line 3, parasitic slot 4, metal patch 1, by changing gap quantity and width
Change antenna impedance, changes resonance frequency by changing the length of parasitic slot 4；By change metal patch 1 size come
Change radiation direction.Metal patch 1 is connect with the ground wire inside integrated chip, the microstrip line inside microstrip line 3 and integrated chip
Connection, the two are independent from each other, and are not integrated.Parasitic slot 4 is also independent, and is also between each parasitic slot 4
It is independent.
Integrated chip is sent to radiofrequency signal by microstrip line 3 microstrip line of antenna, between microstrip line 3 and parasitic slot 4
Resonance is generated to launch outward electromagnetic wave, microstrip line 3 and parasitic slot 4 and the generation mutual induction electromotive force of metal patch 1, is pasted in metal
Image current is generated on piece 1, so that the directionality of antenna transmitting electromagnetic wave is influenced, the size and metal patch 1 of mutual induction electromotive force
Size it is related.
Input impedance is by introducing multiple parasitic slots, and the high input impedance of single slot antenna Zs can pass through following formula meter
It calculates:
Wherein, N is slot sum, and Zs, N are the impedances with the folding slot antenna of N number of slot, and Zs is single slot antenna
Input impedance.Theoretical value is calculated by above formula, is adjusted by actual measurement.
Changing resonance frequency is to change parasitic slot length to be calculated by the following formula:
Wherein, k is the shortening coefficient of metal selected by parasitic slot, and C is the light velocity, and f is resonance frequency.Reason is calculated by above formula
By value, it is adjusted by actual measurement.
Changing radiation direction is to change the valid image of metal patch by changing the ground level design size around slot
Face, i.e., due to metal patch and integrated chip earth short, and ground is primarily due to ground in face of the influence of antenna directivity
Image current.
Further, the parasitic slot 4 includes the first parasitic slot and the second parasitic slot, and the microstrip line 3, described first posts
Raw slot, the described second parasitic slot and the metal patch 1 are set on same plane.
Here 4 quantity of parasitic slot can be configured according to actual needs.
Further, the through-hole 2 is set to the center of the metal patch 1.
Further, the metal patch 1 is T-shape patch.
Further, the T-shape patch is copper sheet, and the length of the copper sheet horizontal sides is 1.3mm, and width is
1.04mm, the length of the copper sheet vertical edges are at least 0.12mm, width 0.35mm；
It is 0.04mm to gap between the metal patch 1.
Further, the microstrip line 3 is T-shape patch.
Further, the T-shape patch is copper sheet, and the length of the copper sheet horizontal sides is 0.8125mm, and width is
The length of 0.04mm, the copper sheet vertical edges are at least 0.5mm, and width is set as 0.09mm.
Further, the parasitic slot 4 is rectangular patch.
Further, the parasitic slot 4 is copper bar, and parasitism 4 length of slot is 0.8125mm, width 0.04mm.
Further, the metal patch 1, the microstrip line 3 and several parasitic 4 thickness of slot are 18um.
Embodiment
Millimeter-wave small can encapsulating antenna, including the parasitic slot of microstrip line 3, first, the second parasitic slot and metal patch 1, institute
State the parasitic slot of microstrip line 3, first, the second parasitic slot patch is one group, metal patch 1 and reference planes are electrically connected and connect；With reference to
Plane is the ground wire of integrated chip.It is electrically connected to be shorted.
The application is the double antenna of folded-diploe antenna, and the slot antenna by introducing multiple parasitic slots 4 reduces input
Impedance changes resonance frequency by changing the length of parasitic slot 4, is changed by changing the ground level design size around slot
Radiation direction, therefore can accomplish small and 50 ohms impedance match, and the performance with directed radiation, especially suitable for integrated
The encapsulation of circuit (IC), the millimeter-wave small for effectively reducing the size that product is generated by external antenna can encapsulating antenna.
Encapsulating antenna provided by the present application for millimeter wave, by the way that through-hole is arranged on metal patch, by microstrip line and
Several parasitism slots are set in through-hole, reduce antenna size, radar performance is turned up, reduce product cost.This application involves use
The vehicle radar system in 77-81GHz frequency range is applied in the encapsulating antenna of millimeter wave and is realized compact dimensions, high-performance and is subtracted
Small passive element size further decreases a kind of method that antenna is integrated into RF encapsulation of complete radio frequency system size.
Although the application is described above by referring to specific embodiment, one of ordinary skill in the art are answered
Work as understanding, in principle disclosed in the present application and range, many modifications can be made for configuration disclosed in the present application and details.
The protection scope of the application is determined by the attached claims, and claim is intended to technical characteristic in claim
Or range is included whole modifications.
Claims (10)
1. a kind of encapsulating antenna for millimeter wave, it is characterised in that: including metal patch (1), set on the metal patch (1)
It is equipped with through-hole (2), microstrip line (3) and several parasitic slots (4) is provided in the through-hole (2).
2. being used for the encapsulating antenna of millimeter wave as described in claim 1, it is characterised in that: the parasitism slot (4) includes first
Parasitic slot and the second parasitic slot, the microstrip line (3), the described first parasitic slot, the described second parasitic slot and the metal patch
(1) it is set on same plane.
3. being used for the encapsulating antenna of millimeter wave as described in claim 1, it is characterised in that: the through-hole (2) is set to described
The center of metal patch (1).
4. being used for the encapsulating antenna of millimeter wave as described in claim 1, it is characterised in that: the metal patch (3) is T-shape
Patch.
5. being used for the encapsulating antenna of millimeter wave as claimed in claim 4, it is characterised in that: the T-shape patch is copper sheet, institute
The length of copper sheet horizontal sides is stated as 1.3mm, width 1.04mm, the length of the copper sheet vertical edges is at least 0.12mm, width
For 0.35mm；
It is 0.04mm to gap between the metal patch (1).
6. being used for the encapsulating antenna of millimeter wave as described in claim 1, it is characterised in that: the microstrip line (3) is T-shape patch
Piece.
7. being used for the encapsulating antenna of millimeter wave as claimed in claim 6, it is characterised in that: the T-shape patch is copper sheet, institute
The length for stating copper sheet horizontal sides is 0.8125mm, and width 0.04mm, the length of the copper sheet vertical edges is at least 0.5mm, wide
Degree is set as 0.09mm.
8. being used for the encapsulating antenna of millimeter wave as described in claim 1, it is characterised in that: the parasitism slot (4) is rectangle patch
Piece.
9. being used for the encapsulating antenna of millimeter wave as claimed in claim 8, it is characterised in that: the parasitism slot (4) is copper bar, institute
Stating parasitic slot (4) length is 0.8125mm, width 0.04mm.
10. such as the encapsulating antenna according to any one of claims 1 to 9 for millimeter wave, it is characterised in that: the metal patch
Piece (1), the microstrip line (3) and several described parasitic slot (4) thickness are 18um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910274799.6A CN110112542A (en) | 2019-04-08 | 2019-04-08 | A kind of encapsulating antenna for millimeter wave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910274799.6A CN110112542A (en) | 2019-04-08 | 2019-04-08 | A kind of encapsulating antenna for millimeter wave |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110112542A true CN110112542A (en) | 2019-08-09 |
Family
ID=67485155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910274799.6A Pending CN110112542A (en) | 2019-04-08 | 2019-04-08 | A kind of encapsulating antenna for millimeter wave |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110112542A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0355898A1 (en) * | 1988-08-03 | 1990-02-28 | Emmanuel Rammos | A planar array antenna, comprising coplanar waveguide printed feed lines cooperating with apertures in a ground plane |
| CN101013774A (en) * | 2007-02-14 | 2007-08-08 | 东南大学 | Slot patch printing antenna of coplanar waveguide feed |
| CN201025630Y (en) * | 2007-02-14 | 2008-02-20 | 东南大学 | Wide frequency band small printing antenna |
| US8022887B1 (en) * | 2006-10-26 | 2011-09-20 | Sibeam, Inc. | Planar antenna |
| CN105024150A (en) * | 2015-05-11 | 2015-11-04 | 云南大学 | Triple-frequency-band antenna used in WLAN and WiMAX |
| CN105680172A (en) * | 2016-03-24 | 2016-06-15 | 天津大学 | Coplanar waveguide feed based wide-band antenna |
| CN109301461A (en) * | 2018-11-22 | 2019-02-01 | 湖南华诺星空电子技术有限公司 | A kind of miniature ultra wide band plane yagi aerial |
-
2019
- 2019-04-08 CN CN201910274799.6A patent/CN110112542A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0355898A1 (en) * | 1988-08-03 | 1990-02-28 | Emmanuel Rammos | A planar array antenna, comprising coplanar waveguide printed feed lines cooperating with apertures in a ground plane |
| US8022887B1 (en) * | 2006-10-26 | 2011-09-20 | Sibeam, Inc. | Planar antenna |
| CN101013774A (en) * | 2007-02-14 | 2007-08-08 | 东南大学 | Slot patch printing antenna of coplanar waveguide feed |
| CN201025630Y (en) * | 2007-02-14 | 2008-02-20 | 东南大学 | Wide frequency band small printing antenna |
| CN105024150A (en) * | 2015-05-11 | 2015-11-04 | 云南大学 | Triple-frequency-band antenna used in WLAN and WiMAX |
| CN105680172A (en) * | 2016-03-24 | 2016-06-15 | 天津大学 | Coplanar waveguide feed based wide-band antenna |
| CN109301461A (en) * | 2018-11-22 | 2019-02-01 | 湖南华诺星空电子技术有限公司 | A kind of miniature ultra wide band plane yagi aerial |
Non-Patent Citations (2)
| Title |
|---|
| J.-H.CHOI等: "Gap-coupled patch-type waveguide-to-microstrip transition on single-layer dielectric substrate at", 《ELECTRONICS LETTERS》 * |
| K.F.TONG等: "Wideband coplanar waveguide fed coplanar patch antenna", 《 IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM》 * |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190809 |
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| RJ01 | Rejection of invention patent application after publication |