CN104201475B - A kind of loop aerial - Google Patents
A kind of loop aerial Download PDFInfo
- Publication number
- CN104201475B CN104201475B CN201410492109.1A CN201410492109A CN104201475B CN 104201475 B CN104201475 B CN 104201475B CN 201410492109 A CN201410492109 A CN 201410492109A CN 104201475 B CN104201475 B CN 104201475B
- Authority
- CN
- China
- Prior art keywords
- feeder line
- support arm
- antenna
- degree
- positive pole
- 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.)
- Active
Links
Abstract
A kind of loop aerial provided by the invention, including feeder line and antenna body, the feeder line is provided with feeder line positive pole and feeder line negative pole, wherein, the antenna body includes the antenna element of some structures in a ring, some antenna elements are symmetrically distributed in the surrounding of the feeder line around the feeder line, and each described antenna element is connected with the feeder line positive pole and feeder line negative pole respectively.A kind of loop aerial provided by the invention, inherit the frequency characteristic and directional characteristic of small loop antenna, annular element is angularly arranged in a three-dimensional surface simultaneously, change impedance using array characteristics, reduce impedance, so as to improve the directionality of small loop antenna and impedance gain, reach the omnidirectional's effect for reducing impedance, ensureing directionality, make gain be not easy acutely to reduce, overcome the impedance problems of small loop antenna, substantially increase efficiency.
Description
Technical field
The present invention relates to the loop aerial of antenna technical field, more particularly, to passive communication.
Background technology
It is light to serve act foot as a kind of part for being used for launching or receiving radio wave in a wireless communication system for antenna
The effect of weight, is indispensable part in wireless communication system.With high frequency satellite communication system, radar, channel radio
Letter system, the rapid development of especially global 3G and 4G networkings, requirement to antenna also more and more higher.On the one hand, it is necessary to
Enable the antenna to be operated in multiple frequency bands, with multiple-working mode and with good transmission performance；On the other hand, subtract again
The weight of light antenna, reduce antenna volume and reduce cost.Just because of such demand, all kinds of antennas are suggested and obtained fluffy
The exhibition of breaking out.
Loop antenna is broadly divided into two classes, and one kind is maximum linear dimension that the total length of conductor and ring one enclose relative to work
Make all very small small loop antenna of wavelength；Another kind of is that the size of the total length of conductor and ring all can with suitable with operating wave
Than the loop antenna of property.Because the relation of wavelength, antenna has very big volume often.Big loop antenna generally also wants a wavelength
Or the conductor of half wavelength is formed, general group forms square, circle etc..The conductor total length of small loop antenna can be with small
In 1/10th wavelength.Although being greatly reduced in small loop antenna volume, its impedance is very big, gain reduce it is violent, communicate by
Greatly limitation, is not suitable for passive communication substantially.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of loop aerial, and the impedance of small loop antenna is subtracted as far as possible
It is small, improve the directionality and impedance gain of small loop antenna, make gain be not easy acutely to reduce.
A kind of loop aerial provided by the invention, including feeder line and antenna body, the feeder line be provided with feeder line positive pole and
Feeder line negative pole, wherein, the antenna body includes the antenna element of some structures in a ring, and some antenna elements are around described
Feeder line is symmetrically distributed in the surrounding of the feeder line, and each described antenna element connects with the feeder line positive pole and feeder line negative pole respectively
Connect.
Further, the quantity of the antenna element is three, and the angle theta between two neighboring antenna element is 120 degree.
Further, the quantity of the antenna element is four, and the angle theta between two neighboring antenna element is 90 degree.
Further, the antenna element includes first support arm, second support arm and the connection first support arm and the
At least one 3rd support arm of two support arms, the first support arm are connected with the feeder line positive pole, the second support arm and the feedback
Line negative pole connects.
Further, the 3rd support arm is in arc-shaped, and the annular to be formed is surrounded with the first support arm, second support arm
Structure is sector, between the angle ɑ of first support arm and second support arm is 75 degree to 85 degree.
Preferably, the angle ɑ is 80 degree.
Further, the first support arm, second support arm and at least one 3rd support arm surround the loop configuration to be formed
For triangle, rhombus or it is square in one kind.
Further, between the angle β of the first support arm and feeder line axis is 15 degree to 21 degree.
Preferably, the angle β is 18 degree.
Further, several described antenna elements are located at same level height.
Further, the feeder line positive pole and the feeder line negative pole are coaxial, and feeder line positive pole is located at the inside of the feeder line, feedback
Feeder line negative pole is provided with outside line positive pole.
Beneficial effects of the present invention：A kind of loop aerial provided by the invention, inherit small loop antenna frequency characteristic and
Directional characteristic, while annular element is angularly arranged in a three-dimensional surface, change impedance using array characteristics, it is small so as to improve
The directionality and impedance gain of loop antenna, reach the omnidirectional's effect for reducing impedance, ensureing directionality, make gain be not easy acutely to subtract
It is small, the impedance problems of small loop antenna are overcome, substantially increase efficiency.
Brief description of the drawings
Fig. 1 is the front view of loop aerial structure of the embodiment of the present invention.
Fig. 2 is the upward view of loop aerial structure of the embodiment of the present invention.
Fig. 3 is the loop aerial antenna radiation pattern that simulation calculation goes out in 1.5GHz of the embodiment of the present invention.
Embodiment
In order to preferably illustrate the technical characterstic of the present invention and structure, below in conjunction with the preferred embodiments of the present invention and its attached
Figure is described in detail.
Refering to Fig. 1 and Fig. 2, loop aerial provided by the invention includes feeder line 100 and antenna body 200, wherein, feeder line
110 are provided with feeder line positive pole 110 and feeder line negative pole 120, and feeder line positive pole 110 is coaxial, feeder line positive pole 110 with feeder line negative pole 120
Positioned at the inside of feeder line 100, feeder line negative pole 120 for parcel feeder line positive pole 110 the outer medium that makes a circle, with 110 groups of feeder line positive pole
Into feeder line 100.Antenna body 200 includes the antenna element 210 of some structures in a ring, and some antenna elements 210 surround institute
State the surrounding that feeder line 100 is symmetrically distributed in the feeder line 100, wherein, each antenna element 210 respectively with the feeder line positive pole
110 and feeder line negative pole 120 connect, and all antenna elements 210 be located at same level height.
Specifically, had any different in view of response of the size of antenna element 210 to frequency, with number of rings (antenna list
Member 210 quantity) increase, frequency will increase, in the present embodiment select antenna element 210 be three, wherein, Mei Getian
Angle theta between line unit 210 is 120 degree, and the total length of each antenna element 210 is about quarter-wave, annular vertical
Array is on antenna body, and the radiating surface that makes integrated antenna is no longer unidirectional axial plane, and whole horizontal plane, as yz is put down in Fig. 2
Face.In other embodiments, the quantity of antenna element 210 can select for more, such as selection is 4, now each day
Angle theta between line unit 210 is 90 degree.
Wherein, each antenna element 210 is loop configuration, and this kind of loop configuration comprises at least first support arm 211, the
Two support arms 212 and at least one 3rd support arm 213 of the connection first support arm 211 and second support arm 212, described first
Arm 211 is connected with the feeder line positive pole 110, and the second support arm 212 is connected with the feeder line negative pole 120.In the present embodiment,
As shown in figure 1, the antenna element 210 of loop configuration includes first support arm 211, second support arm 212 and described first of connection
One the 3rd support arm 213 of arm 211 and second support arm 212, the 3rd support arm 213 are in arc-shaped, with first support arm 211, second
It is sector that arm 212, which surrounds the loop configuration formed, and the angle ɑ of first support arm 211 and second support arm 212 is 80 degree, other
In some embodiments, angle ɑ can be selected between 75 degree to 85 degree.In other embodiments, the 3rd support arm 213 can be it
His shape, its quantity could be arranged to more, such as：3rd support arm 213 is linear, and quantity is 1, now the 3rd support arm
213 loop configuration formed with first support arm 211, the encirclement of second support arm 212 are triangle；Either, the 3rd support arm 213 is straight
Wire, quantity are 2, and now 2 the 3rd support arms 213 surround the loop configuration formed with first support arm 211, second support arm 212
For rhombus or square.Example provided above is preferred in progress structure type, is not construed as to specific constructive form
Limit.
Wherein, the first support arm 211 for the antenna element 210 being connected with feeder line positive pole 110, each antenna element 210 it
Between first support arm 211 can not overlapped, interference, i.e., need between having between the first support arm 211 of each antenna element 210
The angle β of gap, first support arm and feeder line axis is between 15 degree to 21 degree, and preferably angle β is 18 degree in the present embodiment.My god
The second straight line 212 of line unit 210 is connected with feeder line negative pole 120, and feeder line negative pole 120 is used to be grounded.
The loop aerial that above example provides, inherit the frequency characteristic and directional characteristic of small loop antenna；Meanwhile by day
Line unit presses certain angle permutation and combination in a three-dimensional surface, changes impedance using array characteristics, so as to improve small loop antenna
Directionality and impedance gain, reach the omnidirectional's effect for reducing impedance, ensureing directionality, make gain be not easy acutely to reduce, overcome
The impedance problems of small loop antenna, substantially increase efficiency.
Fig. 3 is to have carried out the figure of Numerical Validation to the loop aerial that above example provides using the method for simulation calculation
Show, for the loop aerial in frequency 1.5GHz, gain can reach -6dBi, and half-power angle reaches more than 100 °, illustrates the ring
Directionality keeps omnidirectional to shape antenna simultaneously, overcomes the impedance problems of small loop antenna, substantially increases efficiency.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body makes a distinction with another entity, and not necessarily require either imply between these entities exist any actual relation or
Sequentially.
The above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not to the present invention
Embodiment restriction.For those of ordinary skill in the field, can also make on the basis of the above description
Other various forms of changes or variation.There is no necessity and possibility to exhaust all the enbodiments.It is all the present invention
All any modification, equivalent and improvement made within spirit and principle etc., should be included in the protection of the claims in the present invention
Within the scope of.
Claims (8)
1. a kind of loop aerial, including feeder line (100) and antenna body (200), the feeder line (100) are provided with feeder line positive pole
(110) and feeder line negative pole (120), it is characterised in that the antenna body (200) includes the antenna element of some structures in a ring
(210), some antenna elements (210) are spaced in a three-dimensional surface, and some antenna elements (210) surround institute
State the surrounding that feeder line (100) is circumferentially symmetrically distributed in the feeder line (100), each described antenna element (210) respectively with
The feeder line positive pole (110) and feeder line negative pole (120) connection；The antenna element (210) includes first support arm (211), second
Support arm (212) and the connection first support arm (212) and at least one 3rd support arm (213) of second support arm (212) are described
First support arm (211) is connected with the feeder line positive pole (110), and the second support arm (212) connects with the feeder line negative pole (120)
Connect；
Wherein, coaxially, feeder line positive pole (110) is located at the feeder line for the feeder line positive pole (110) and the feeder line negative pole (120)
(100) inside, feeder line positive pole (110) is outside to be provided with feeder line negative pole (120), feeder line negative pole (120) parcel feeder line positive pole (110)
Periphery；
Wherein, between the angle ɑ of the first support arm (211) and the second support arm (212) is 75 degree to 85 degree；Described first
Between the angle β of support arm (211) and the feeder line (100) axis is 15 degree to 21 degree.
2. loop aerial according to claim 1, it is characterised in that the quantity of the antenna element (210) is three, phase
Angle theta between adjacent two antenna elements (210) is 120 degree.
3. loop aerial according to claim 1, it is characterised in that the quantity of the antenna element (210) is four, phase
Angle theta between adjacent two antenna elements (210) is 90 degree.
4. loop aerial according to claim 1, it is characterised in that the 3rd support arm (213) is in arc-shaped, and described
It is sector that first support arm (211), second support arm (212), which surround the loop configuration formed,.
5. loop aerial according to claim 4, it is characterised in that the angle ɑ is 80 degree.
6. loop aerial according to claim 1, it is characterised in that the first support arm (211), second support arm (212)
With at least one 3rd support arm (213) surround formed loop configuration for triangle, rhombus or it is square in one kind.
7. loop aerial according to claim 1, it is characterised in that the angle β is 18 degree.
8. loop aerial according to claim 1, it is characterised in that several described antenna elements (210) are positioned at same
Level height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410492109.1A CN104201475B (en) | 2014-09-23 | 2014-09-23 | A kind of loop aerial |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410492109.1A CN104201475B (en) | 2014-09-23 | 2014-09-23 | A kind of loop aerial |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104201475A CN104201475A (en) | 2014-12-10 |
| CN104201475B true CN104201475B (en) | 2018-04-10 |
Family
ID=52086731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410492109.1A Active CN104201475B (en) | 2014-09-23 | 2014-09-23 | A kind of loop aerial |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104201475B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004072432A (en) * | 2002-08-06 | 2004-03-04 | Furukawa Electric Co Ltd:The | Antenna unit, antenna device, and broadcast tower |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2303703C (en) * | 2000-03-30 | 2001-09-04 | James Stanley Podger | The lemniscate antenna element |
| CN1773771B (en) * | 2005-10-21 | 2012-02-08 | 兰州大学 | Orthogonal ring antenna |
| CN204103044U (en) * | 2014-09-23 | 2015-01-14 | 中国科学院深圳先进技术研究院 | A kind of loop aerial |
-
2014
- 2014-09-23 CN CN201410492109.1A patent/CN104201475B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004072432A (en) * | 2002-08-06 | 2004-03-04 | Furukawa Electric Co Ltd:The | Antenna unit, antenna device, and broadcast tower |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104201475A (en) | 2014-12-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106134002B (en) | Multi-mode composite antenna | |
| US7525506B2 (en) | Antenna apparatus and antenna radome and design method thereof | |
| CN203386887U (en) | Antenna oscillator and antenna equipped with same | |
| US10553962B2 (en) | Dipole antenna with beamforming ring | |
| WO2015096702A1 (en) | Multi-frequency array antenna | |
| CN107863996B (en) | Omnidirectional array antenna and beam forming method thereof | |
| EP3316397B1 (en) | Fixed multibeam stereoscopic helical antenna array and helical antenna flexible support device thereof | |
| US10396471B2 (en) | Three polarization MIMO antenna system | |
| JP2008066936A (en) | Array antenna | |
| CN207475549U (en) | omni-directional array antenna | |
| CN104009299B (en) | Bipolarization antenna for base station | |
| CN106299689A (en) | A kind of ultra broadband low section vertical depolarized omnidirectional antenna | |
| KR101709318B1 (en) | Radiating element and Base station antenna using thereof | |
| CN105186137A (en) | Multi-resonant structure based single-feed anti-multipath adaptive antenna | |
| WO2019100376A1 (en) | Omnidirectional array antenna and beamforming method therefor | |
| CN103390790A (en) | Antenna structure | |
| CN104201475B (en) | A kind of loop aerial | |
| CN204103044U (en) | A kind of loop aerial | |
| CN103390791B (en) | A kind of dual-band antenna that can be used for human body communication system | |
| US9774090B2 (en) | Ultra-wide band antenna | |
| JP2017092663A (en) | Broadband non-directional antenna | |
| CN101924272B (en) | Slot antenna and slot antenna array | |
| CN202772257U (en) | Dual-frequency antenna for human communication system | |
| Ullah et al. | Omni-directional wideband antenna array with solar cells | |
| CN202034481U (en) | Super medium intelligent loaded antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |