CN208580850U - Security radar equipment antenna - Google Patents
Security radar equipment antenna Download PDFInfo
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- CN208580850U CN208580850U CN201821489866.3U CN201821489866U CN208580850U CN 208580850 U CN208580850 U CN 208580850U CN 201821489866 U CN201821489866 U CN 201821489866U CN 208580850 U CN208580850 U CN 208580850U
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Abstract
The utility model provides a kind of security radar equipment antenna, comprising: several quasi-travelling wave antenna structures being set side by side；Each quasi-travelling wave antenna structure includes: arrangement eight microband antenna unit structures in alignment, microband antenna unit structure includes: rectangular radiation element, the length of rectangular radiation element is identical, and width gradually decreases the rectangular radiation element being located on straight line from the inside to the outside.By the existing Radar Antenna Structure of simplification, optimize feeding network, so that overall structure more simplifies, so that overall volume reduces；And under volume-diminished, gain is improved, the effective secondary lobe for reducing directional diagram enhances the accuracy and stability of aerial signal acquisition, is particularly suitable for indoor complex environment；And antenna disclosed in the utility model has wider array of detectable range, has a very important role for the performance of entire security system.
Description
Technical field
The utility model belongs to Radar Technology field, more particularly to a kind of applied to indoor security radar equipment antenna.
Background technique
With social development, the raising of awareness of safety, and the pursuit to high-quality life, so that resident is for public field
And residential quarters security level demand it is higher and higher.Traditional approach is people by the way that patrol is arranged to a certain range
Interior environment is monitored, but security breaches are more.With the promotion of Radar Technology and the decline of cost, so that by radar
Technology application becomes possible in civilian security system.Radar security protection can effectively detect and identify that insecurity factor enters to invade
Path is escaped, while radar is for extraneous environment, such as wind and rain, sand and dust, haze influence are smaller, especially in the undesirable item of light
Under part, radar can give full play to its good characteristic, so that security system becomes relatively reliable.Antenna as radar transmitting, connect
The structure collected mail number has a very important role, during army becomes the people, it is desirable to provide low in cost, structure is simple, hair
It penetrates and what acceptable effect was good is suitable for civilian antenna structure, especially use indoors, interior is changeable with environment, structure is multiple
It is miscellaneous, effect of signals degree is high is difficult to the problem of capturing.
Summary of the invention
In view of this, the present invention provides a kind of security radar equipment antennas, to solve existing Radar Antenna Structure complexity, body
Product is big, at high cost and the technical issues of be not suitable under indoor environment changeable, effect of signals is high.For the embodiment to disclosure
Some aspects have a basic understanding, simple summary is shown below.The summarized section is not extensive overview, nor
It determines key/critical component or describes the protection scope of these embodiments.Its sole purpose is to be in simple form
Existing some concepts, in this, as the preamble of following detailed description.
The utility model adopts the following technical solution:
In some alternative embodiments, a kind of security radar equipment antenna is provided, comprising: several quasi-travelling wave days being set side by side
Cable architecture；Each quasi-travelling wave antenna structure includes: arrangement eight microband antenna unit structures in alignment, adjacent micro-strip day
Line cellular construction by microstrip line connect, for connect microband antenna unit structure each microstrip line it is of same size；Micro-strip
Antenna unit structure includes: rectangular radiation element, and the length of rectangular radiation element is identical, and the rectangular radiation list being located on straight line
Width gradually decreases member from the inside to the outside.
In some alternative embodiments, the quantity of the quasi-travelling wave antenna structure is ten, ten there won't be any problem wave antenna knots
The two of them of structure are as transmitting antenna, and in addition eight are used as receiving antenna, and the spacing of two emitting antennas is 1.8 times of wavelength,
The spacing of eight receiving antennas is 0.6 times of wavelength；Wherein, wavelength refers to frequency 24.125Ghz in the wavelength of free space.
In some alternative embodiments, the microband antenna unit structure further include: dielectric substrate and earth plate, it is described
The upper surface of the dielectric substrate is arranged in rectangular radiation element, and the lower surface of the dielectric substrate is arranged in the earth plate.
In some alternative embodiments, from the 5th microband antenna unit of left number in each quasi-travelling wave antenna structure
Structure further include: coaxial line, the inner conductor of the coaxial line sequentially pass through after the earth plate, the dielectric substrate with the square
The connection of shape radiating element.
In some alternative embodiments, the horizontal direction of the field angle of the quasi-travelling wave antenna structure is 76deg, vertically
Direction is 12.8deg；The Sidelobe Suppression ratio of the quasi-travelling wave antenna structure is 18dB；The antenna of the quasi-travelling wave antenna structure increases
Benefit is 13.2dBi.
In some alternative embodiments, the rectangular radiation element and the earth plate are selected as metal material.
In some alternative embodiments, the dielectric substrate is selected as Rogers 4350B, with a thickness of 10mil, opposite dielectric
Constant is 3.48.
Brought by the utility model the utility model has the advantages that by simplifying existing Radar Antenna Structure, optimize feeding network, so that
Overall structure more simplifies, so that overall volume reduces；And under volume-diminished, gain, effective reduction side are improved
To the secondary lobe of figure, the accuracy and stability of aerial signal acquisition are enhanced, indoor complex environment is particularly suitable for；And this reality
There is wider array of detectable range with novel disclosed antenna, there is highly important work for the performance of entire security system
With.
For the above and related purposes, one or more embodiments include being particularly described below and in claim
In the feature that particularly points out.Certain illustrative aspects are described in detail in the following description and the annexed drawings, and its instruction is only
Some modes in the utilizable various modes of the principle of each embodiment.Other benefits and novel features will be under
The detailed description in face is considered in conjunction with the accompanying and becomes obvious, the disclosed embodiments be all such aspects to be included and they
Be equal.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model security radar equipment antenna；
Fig. 2 is the structural schematic diagram of the utility model ground panel；
Fig. 3 is the structural schematic diagram of the utility model quasi-travelling wave antenna structure；
Fig. 4 is the top view of the utility model quasi-travelling wave antenna structure；
Fig. 5 is the structural schematic diagram of the utility model microband antenna unit structure；
Fig. 6 is the top view of the utility model microband antenna unit structure；
Fig. 7 is the directional diagram of prior art security radar equipment antenna；
Fig. 8 is the directional diagram of the utility model security radar equipment antenna.
Specific embodiment
The following description and drawings fully show specific embodiments of the present invention, to enable those skilled in the art to
Practice them.Other embodiments may include structure, logic, it is electrical, process and other change.Embodiment
Only represent possible variation.Unless explicitly requested, otherwise individual components and functionality is optional, and the sequence operated can be with
Variation.The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.This hair
The range of bright embodiment includes equivalent obtained by the entire scope of claims and all of claims
Object.
As shown in Figure 1, in some illustrative embodiments, providing a kind of security radar equipment antenna, comprising: several to set side by side
The quasi-travelling wave antenna structure 1 set, the quantity of quasi-travelling wave antenna structure 1 are ten, and two of them quasi-travelling wave antenna structure 1 is as hair
Antenna C is penetrated, for emitting signal, in addition eight quasi-travelling wave antenna structures 1 are used as receiving antenna D, for receiving signal.
The spacing of two emitting antennas C is 1.8 times of wavelength, and the spacing of eight receiving antenna D is 0.6 times of wavelength, antenna it
Between distance can reduce the coupling between each antenna, will not influence mutiple antennas and work at the same time, to guarantee security radar equipment
Stability.Wherein, wavelength refers to frequency 24.125Ghz in the wavelength of free space.
Requirement of the quasi-travelling wave antenna structure 1 as the 3dB field angle of antenna: horizontal direction 76deg, vertical direction are
12.8deg；The Sidelobe Suppression ratio of quasi-travelling wave antenna structure 1 is 18dB；The antenna gain of quasi-travelling wave antenna structure 1 is 13.2dBi.
The directional diagram of antenna is observed generally using 3dB field angle as standard, because directional diagram is one three-dimensional as a result, by it with level
Reference result of two angles in face and vertical plane as 2D.It is required that it is to reduce other objects to day that Sidelobe Suppression ratio, which is 18dB,
The influence of line directional diagram, because electromagnetic wave is there are scattering problems, antenna gain height is in order to by the farther of Electromagnetic Wave Propagation, still
The size of antenna and the number of unit are taken into account, so the gain maximum of the antenna under this size can reach 14.5dBi, is not examined
Consider institute it is lossy directly with ideal model calculating result.
Ten quasi-travelling wave antenna structures 1 select series feed line array structure, and feeding classification uses coaxial feeding.Such as Fig. 3 to 4
Shown, each quasi-travelling wave antenna structure 1 includes: arrangement microband antenna unit structure 2 in alignment, each there won't be any problem wave antenna
The quantity of microband antenna unit structure 2 contained by structure 1 is eight.As shown in figure 5, it is three layers that microband antenna unit structure 2, which is divided,
Structure, comprising: positioned at top layer rectangular radiation element 3, be located in the middle dielectric substrate 4 and positioned at the earth plate 5 of bottom；Rectangle
Radiating element 3 and earth plate 5 are selected as metal material, can be copper；Dielectric substrate 4 is selected as Rogers 4350B, with a thickness of 10mil, phase
It is 3.48 to dielectric constant.
As shown in Figures 3 and 4, it is also wrapped in each quasi-travelling wave antenna structure 1 from the 5th microband antenna unit structure 2 of left number
Include: coaxial line 6, the inner conductor 7 of coaxial line 6 are connect after sequentially passing through earth plate 5, dielectric substrate 4 with rectangular radiation element 3.Such as
Shown in Fig. 6, the place that the inner conductor 7 of the annulus expression coaxial line 6 in Fig. 6 is connected with rectangular radiation element 3, inner conductor 7
The movement set has determined the impedance magnitude of feed mouth.As shown in Fig. 2, 10 holes of the centre of grounded metal plate B indicate coaxial
The position that line inner conductor is connect with the rectangular radiation element 3 of the 5th microband antenna unit structure 2 in quasi-travelling wave antenna structure 1.
Adjacent 2 structure of microband antenna unit structure is connected by microstrip line 8.For connecting microband antenna unit structure 2
Each microstrip line 8 it is of same size, microstrip line is the microwave transmission line being made of the plain conductor band propped up on dielectric substrate,
The attached copper in the dielectric substrate back side, front constitute microwave transmission line by plain conductor band.Each micro-strip day in quasi-travelling wave antenna structure 1
Dielectric substrate among line cellular construction 2 and each microstrip line 8 forms a monolith dielectric layer A, each microband antenna unit structure 2
And the earth plate on each 8 ground of microstrip line forms a monolith grounded metal plate B, the top surface conductor of microstrip line 8 by it is same there won't be any problem
The rectangular radiation element 3 of each microband antenna unit structure 2 in wave antenna structure 1 connects.
The rectangular radiation element 3 of eight microband antenna unit structures 2 in quasi-travelling wave antenna structure 1 constitutes the radiation of antenna
Part, the lateral of rectangular radiation element 3 indicate element length, determine the working frequency of antenna, and longitudinal direction indicates the width of unit,
The impedance magnitude of adjustable unit, the direction of the field angle of the adjustable security radar equipment of the spacing of rectangular radiation element 3.
The rectangular radiation element 3 of eight microband antenna unit structures 2 in quasi-travelling wave antenna structure 1 is symmetrical using effect
The length of structure, i.e. rectangular radiation element 3 in quasi-travelling wave antenna structure 1 is identical, and the rectangular radiation element 3 being located on straight line
Width gradually decreases from the inside to the outside because from feed the rectangular radiation element 3 at both ends be all as last load,
Load is gradually increased, and electric current is gradually reduced, and is not proper traveling wave day compared to the travelling-wave aerial of whole terminating load
Line, so being called there won't be any problem wave antenna.
As shown in Fig. 7 to 8, ten quasi-travelling wave antenna structures 1 of the utility model select series feed line array structure, series feed net
The feeder line of network is shorter, so the faradic loss of radar system can be smaller, it is series feed to use line array form, line array
Patterns calculating formula it is as follows:
F (θ)=k*f (θ) * S (θ)；
Wherein k indicates that wave number k=2 π/λ, θ indicate to indicate that the current amplitude of n-th of unit, α indicate feedback with Z axis angle, In
Electric phase difference, the feed amplitude being sequentially reduced at this time using In from centre to both sides, compared to all using identical amplitude
As a result available lesser secondary lobe amplitude.Compared to existing security radar equipment antenna, the utility model is because secondary lobe reduces just
Influence of the radar system periphery to antenna radiation performance can be reduced, to improve the stability of security radar equipment antenna, and array
The gain of form raising security radar equipment antenna.
Above-described embodiment is the preferable embodiment of the utility model, but the embodiments of the present invention is not by above-mentioned
The limitation of embodiment, the change made under other any spiritual essence and principles without departing from the utility model are modified, substitution,
Combination simplifies, should be equivalent substitute mode, all should include within the protection scope of the present utility model.
Claims (7)
1. security radar equipment antenna characterized by comprising several quasi-travelling wave antenna structures being set side by side；Each quasi-travelling wave day
Cable architecture includes: arrangement eight microband antenna unit structures in alignment, and adjacent microband antenna unit structure passes through micro-strip
Line connection, for connect microband antenna unit structure each microstrip line it is of same size；Microband antenna unit structure includes: square
The length of shape radiating element, rectangular radiation element is identical, and width is gradually from the inside to the outside for the rectangular radiation element being located on straight line
It reduces.
2. security radar equipment antenna according to claim 1, which is characterized in that the quantity of the quasi-travelling wave antenna structure is ten
A, the two of them of ten quasi-travelling wave antenna structures are as transmitting antenna, and in addition eight are used as receiving antenna, two emitting antennas
Spacing be 1.8 times of wavelength, the spacing of eight receiving antennas is 0.6 times of wavelength；Wherein, wavelength refers to that frequency 24.125Ghz exists
The wavelength of free space.
3. security radar equipment antenna according to claim 2, which is characterized in that the microband antenna unit structure further include:
The upper surface of the dielectric substrate is arranged in dielectric substrate and earth plate, the rectangular radiation element, and the earth plate setting exists
The lower surface of the dielectric substrate.
4. security radar equipment antenna according to claim 3, which is characterized in that from left in each quasi-travelling wave antenna structure
The 5th microband antenna unit structure of number further include: coaxial line, the inner conductor of the coaxial line sequentially pass through the earth plate, institute
It is connect after stating dielectric substrate with the rectangular radiation element.
5. security radar equipment antenna according to claim 4, which is characterized in that the field angle of the quasi-travelling wave antenna structure
Horizontal direction is 76deg, vertical direction 12.8deg；The Sidelobe Suppression ratio of the quasi-travelling wave antenna structure is 18dB；The standard
The antenna gain of travelling wave antenna structure is 13.2dBi.
6. security radar equipment antenna according to claim 5, which is characterized in that the rectangular radiation element and the earth plate
It is selected as metal material.
7. security radar equipment antenna according to claim 6, which is characterized in that the dielectric substrate is selected as Rogers 4350B,
With a thickness of 10mil, relative dielectric constant 3.48.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821489866.3U CN208580850U (en) | 2018-09-12 | 2018-09-12 | Security radar equipment antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821489866.3U CN208580850U (en) | 2018-09-12 | 2018-09-12 | Security radar equipment antenna |
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| Publication Number | Publication Date |
|---|---|
| CN208580850U true CN208580850U (en) | 2019-03-05 |
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ID=65512616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821489866.3U Active CN208580850U (en) | 2018-09-12 | 2018-09-12 | Security radar equipment antenna |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110233356A (en) * | 2019-07-01 | 2019-09-13 | 张峰会 | A kind of series feed microstrip antenna array and its optimum design method |
| CN111276813A (en) * | 2019-12-27 | 2020-06-12 | 北京海兰信数据科技股份有限公司 | Radar antenna |
| CN115566404A (en) * | 2021-07-02 | 2023-01-03 | 特崴光波导股份有限公司 | Coupled array antenna and device thereof |
-
2018
- 2018-09-12 CN CN201821489866.3U patent/CN208580850U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110233356A (en) * | 2019-07-01 | 2019-09-13 | 张峰会 | A kind of series feed microstrip antenna array and its optimum design method |
| CN111276813A (en) * | 2019-12-27 | 2020-06-12 | 北京海兰信数据科技股份有限公司 | Radar antenna |
| CN115566404A (en) * | 2021-07-02 | 2023-01-03 | 特崴光波导股份有限公司 | Coupled array antenna and device thereof |
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