CN105932418A - Ultra-wideband coplanar waveguide antenna used for target detection - Google Patents
Ultra-wideband coplanar waveguide antenna used for target detection Download PDFInfo
- Publication number
- CN105932418A CN105932418A CN201610416899.4A CN201610416899A CN105932418A CN 105932418 A CN105932418 A CN 105932418A CN 201610416899 A CN201610416899 A CN 201610416899A CN 105932418 A CN105932418 A CN 105932418A
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- Prior art keywords
- director
- coplanar
- antenna
- radiation area
- waveguide antenna
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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
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
Abstract
The invention relates to ultra-wideband, and provides a small coplanar waveguide antenna. The small coplanar waveguide antenna is applicable in a frequency range of 6.61-11.93 GHz, high-frequency signals an be emitted and received effectively, and the emitted and received electromagnetic wave signals can be analyzed, so that related information of the area and unknown objects is obtained. The technical scheme adopted by the invention is an ultra-wideband coplanar waveguide antenna used for target detection, the antenna printed on an FR-4 conventional PCB medium substrate is of a single-layer printing structure and consists of a coplanar microstrip transmission line, a radiation area and a director, the coplanar microstrip transmission line is used for feeding, a feeding positive plate and a feeding negative plate of the coplanar microstrip transmission line are on the same plane, the coplanar microstrip transmission line is used for guiding current to the radiation area, high-frequency current is used for generating a high-frequency electromagnetic field in the space around the radiation area and is radiated out, electromagnetic waves with higher frequency are guided under the effect of the director, and radiation is formed at the position of the guider as well. The ultra-wideband coplanar waveguide antenna is mainly applied to communication antenna design and manufacturing occasions.
Description
Technical field
The present invention relates to ultra broadband, Antenna Design, target detection, microwave system, specifically, relate to the ultra-wide of target detection
Band coplanar waveguide antenna.
Background technology
Along with microwave wireless technology is fast-developing, more signal band is utilized, in the range of existing authorized frequency, and frequency band
Resource utilization is high, and untapped frequency band is deficient, in order to meet ever-increasing military demand and civilian demand, needs higher frequency
Rate uses, and produces the microwave device of relevant work frequency.In the complicated altofrequency environment of millimeter wave rank, ultra broadband (UWB)
Technology, relative to traditional narrow-band technologies, has low-power consumption, and in high precision, the clear superiority of two-forty, therefore, development possesses
High-speed low-power-consumption, ultra broadband (UWB) technology of cheap high performance characteristics is imperative.
Ultra broadband (UWB) technology is commonly used to the fields such as detection radar, material flaw detection, breast tumor detection, more widely
Use and the Antenna Design of respective environment frequency is inseparable.In microwave system, the antenna quality of receiving and transmitting signal directly determines
The efficiency of microwave system work.A excellent ultra-wideband antenna for target detection, is generally of size small, becomes
This is the cheapest, and the plurality of advantages such as radiationless damage, and the operating frequency of ultra-wideband antenna, generally in GHz rank, is in this frequency etc.
The antenna of level, it is necessary to there is voltage standing wave ratio and the constant gain being stably less than 2.
Coplanar waveguide structure, namely Coplanar stripline structure, coplanar wave guide feedback is the usual way of antenna feed, adopts
Take coplanar waveguide structure feed antenna can the most integrated on a printed circuit, the coplanar waveguide antenna of monolayer, it is easy to
Manufacture, build for the passive of circuit and active system and provide convenience.
Summary of the invention
For overcoming the deficiencies in the prior art, it is contemplated that propose a kind of small-sized coplanar waveguide antenna, it is adaptable to 6.61-11.93GHz
Frequency range, has stable antenna gain in working band, can effectively launch and receive high-frequency signal.This antenna is launched
Electromagnetic wave energy direction is more concentrated, and is placed in search coverage adjacent place with certain rule, can be launched by this antenna and receive electricity
The two kinds of electromagnetic wave signals launched and receive are analyzed, are obtained the relevant information of this region and unknown object with this by magnetic wave,
Position judgment and further exploration for unknown object provide scientific basis.The technical solution used in the present invention is, examines for target
The ultra broadband coplanar waveguide antenna surveyed, described antenna is printed on FR-4 routine PCB medium substrate, monolayer print structure, by
Coplanar stripline, radiation area and director composition, use Coplanar stripline feed, and the feed of coplanar microstrip line is positive and negative
Pole plate is at same plane, and coplanar microstrip line conducts the current to radiation area, and high frequency electric produces high-frequency electrical at radiation area surrounding space
Magnetic field, and radiate, under the effect of director, the electromagnetic wave of frequency upper section is guided, same at director
Form radiation.
Coplanar microstrip line is made up of three feed pole plates, and described feed pad-face is in a plane, and radiation area is minor matters structures
Metal covering director is an isosceles triangle, and the raw metal covering part for rectangular area is prolonged in lower section.
Feed slit width is 0.16mm, side minor matters length L1=director width W1=9mm, feeds pole plate length
L2=5.73mm, feeding electrode width W3=11.64mm, micro belt line width W4=1.4mm, director tip length L3=2.25mm,
Side minor matters width W2=director rectangle part length L4=radiation area transverse axis length L6=1mm, director and radiation area spacing
L5=1.25mm.
The feature of the present invention and providing the benefit that:
By regulation antenna minor matters quantity and position and configurations of directors and position, regulate the radiance of antenna and at some
The directivity of frequency, thus improve antenna match and directivity on the whole, last optimum results display antenna possesses stable increasing
Beneficial and good directivity, significant for improving detection degree of accuracy and reduction antenna energy loss.Work at antenna
Actual gain in frequency band range all reaches more than 4dBi, and on 7 to the integer frequency of 11GHz, 3dB gain angular width divides
Not being 133.9 °, 164.6 °, 57 °, 139 ° and 114.9 °, therefore, electromagnetic wave effectively can cover in radiation areas,
And concentrate in main lobe direction power density, it is simple to the directional transmissions of electromagnetic signal and reception.
Accompanying drawing illustrates:
The print structure schematic diagram of this antenna of Fig. 1.
The S11 characteristic curve of this antenna of Fig. 2.
Fig. 3 gain is with frequency variation curve.
This antenna of Fig. 4 directional diagram when 7GHz.
This antenna of Fig. 5 directional diagram when 8GHz.
This antenna of Fig. 6 directional diagram when 9GHz.
This antenna of Fig. 7 directional diagram when 10GHz.
This antenna of Fig. 8 directional diagram when 11GHz.
Detailed description of the invention
The technical scheme is that,
(1) antenna is printed on the FR-4 routine PCB medium substrate that dielectric constant is 4.3, and antenna size is 25 × 30 × 1mm,
This antenna is monolayer print structure.It it is this kind of ultra-wideband antenna front print structure schematic diagram shown in Fig. 1.This antenna is by coplanar micro-
Band transmission line 1., radiation area 2. 3. form with director, antenna use Coplanar stripline 1. feed, coplanar microstrip line is by three
Individual feed pole plate is constituted, and pad-face is in a plane, and feed slit width is 0.16mm, excellent performance, easy to process.Altogether
2. 1. face microstrip line conduct the current to radiation area, and radiation area is the metal covering of minor matters structure, and high frequency electric is empty around radiation area
Between produce electromagnetic field of high frequency, and radiate.Under director effect 3., antenna also can form excellent when frequency is higher
Joining effect, director is an isosceles triangle, and the raw metal covering part for rectangular area is prolonged in lower section.The electromagnetism of frequency upper section
Ripple is guided, and is similarly formed radiation at director 3. place.The parameters of antenna is: feed slit width is 0.16mm, side
Face minor matters length L1=director width W1=9mm, feed pole plate length L2=5.73mm, feeding electrode width W3=11.64mm,
Micro belt line width W4=1.4mm, director tip length L3=2.25mm, side minor matters width W2=director rectangle part is long
Degree L4=radiation area transverse axis length L6=1mm, director and radiation area spacing L5=1.25mm.
(2) Fig. 2 is the S of antenna11Figure, intuitively has good matching properties to antenna from figure in working band,
Standing-wave ratio is high, and energy transfer efficiency is high.
(3) Fig. 3 be antenna in working band, the maximum gain curve of each Frequency point.In the drawings it can be seen that antenna is at these
Frequency point all has the constant gain more than 4dBi, it means that antenna is good in the directivity of main radiation direction, is conducive to the side of raising
To radiant intensity, additionally, good gain makes radiation loss low, reduce transmitting power attenuation, it is achieved that ultra broadband detects
Low power consumption characteristic.The directional diagram at individual Frequency point of antenna is as shown in Fig. 4 to Fig. 8.
The feature of the present invention:
(1) being suitably introduced into of employing coplanar waveguide structure feed, and director, the main radiation direction gain stabilization of antenna,
Transmitting and the reception of signal electromagnetic wave can be smoothed out in working band.
(2) antenna is connected to coaxial transmission line by Coplanar stripline, the pumping signal of reception is launched, the most same
The signal reclaimed can be analyzed by axle receiving terminal, thus obtains unknown object distributed intelligence.
(3) antenna gain stabilization in frequency band, main radiation direction power is concentrated, it is possible to achieve the transmitting of selected principal direction and reception,
This oriented detection being conducive to detecting signal, it is achieved being accurately positioned of unknown object position.
Claims (3)
1. for a ultra broadband coplanar waveguide antenna for target detection, it is characterized in that, described antenna is printed on FR-4 routine PCB and is situated between
On matter substrate, monolayer print structure, it is made up of Coplanar stripline, radiation area and director, uses coplanar micro-strip to transmit
Line feeds, and the feed positive/negative plate of coplanar microstrip line is at same plane, and coplanar microstrip line conducts the current to radiation area, high frequency
Electric current produces electromagnetic field of high frequency at radiation area surrounding space, and radiate, under the effect of director, and frequency upper section
Electromagnetic wave guided, at director, be similarly formed radiation.
2. the ultra broadband coplanar waveguide antenna for target detection as claimed in claim 1, is characterized in that, coplanar microstrip line is by three
Feed pole plate is constituted, and described feed pad-face is in a plane, and radiation area is that the metal covering director of minor matters structure is for first-class
Lumbar triangle shape, the raw metal covering part for rectangular area is prolonged in lower section.
3. the ultra broadband coplanar waveguide antenna for target detection as claimed in claim 1, is characterized in that, feed slit width is
0.16mm, side minor matters length L1=director width W1=9mm, feed pole plate length L2=5.73mm, feeding electrode width
Degree W3=11.64mm, micro belt line width W4=1.4mm, director tip length L3=2.25mm, side minor matters width
W2=director rectangle part length L4=radiation area transverse axis length L6=1mm, director and radiation area spacing
L5=1.25mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610416899.4A CN105932418A (en) | 2016-06-12 | 2016-06-12 | Ultra-wideband coplanar waveguide antenna used for target detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610416899.4A CN105932418A (en) | 2016-06-12 | 2016-06-12 | Ultra-wideband coplanar waveguide antenna used for target detection |
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| Publication Number | Publication Date |
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| CN105932418A true CN105932418A (en) | 2016-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610416899.4A Pending CN105932418A (en) | 2016-06-12 | 2016-06-12 | Ultra-wideband coplanar waveguide antenna used for target detection |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108770107A (en) * | 2018-08-02 | 2018-11-06 | 电子科技大学 | A kind of microwave device for columnar object heating |
| CN109659707A (en) * | 2018-12-24 | 2019-04-19 | 广东工业大学 | Terahertz detector and method based on N × M dielectric resonator antenna array |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101435538B1 (en) * | 2013-02-15 | 2014-09-02 | 동서대학교산학협력단 | A broadband plannar Quasi-Yagi antenna |
| CN205692955U (en) * | 2016-06-12 | 2016-11-16 | 天津大学 | Ultra broadband coplanar waveguide antenna for target detection |
-
2016
- 2016-06-12 CN CN201610416899.4A patent/CN105932418A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101435538B1 (en) * | 2013-02-15 | 2014-09-02 | 동서대학교산학협력단 | A broadband plannar Quasi-Yagi antenna |
| CN205692955U (en) * | 2016-06-12 | 2016-11-16 | 天津大学 | Ultra broadband coplanar waveguide antenna for target detection |
Non-Patent Citations (2)
| Title |
|---|
| HYEONJIN LEE等: "CPW-fed to CPS Dipole Antenna with a Inversed Triangular Loop Director", 《2014 SIXTH INTERNATIONAL CONFERENCE ON COMPUTATIONAL INTELLIGENCE AND COMMUNICATION NETWORKS》 * |
| 王潇牧等: "高增益平面准八木天线设计", 《科学技术与工程》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108770107A (en) * | 2018-08-02 | 2018-11-06 | 电子科技大学 | A kind of microwave device for columnar object heating |
| CN108770107B (en) * | 2018-08-02 | 2024-04-19 | 电子科技大学 | Microwave device for heating columnar object |
| CN109659707A (en) * | 2018-12-24 | 2019-04-19 | 广东工业大学 | Terahertz detector and method based on N × M dielectric resonator antenna array |
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Application publication date: 20160907 |