CN2746569Y - Burried butterfly array antenna - Google Patents
Burried butterfly array antenna Download PDFInfo
- Publication number
- CN2746569Y CN2746569Y CN 200420115888 CN200420115888U CN2746569Y CN 2746569 Y CN2746569 Y CN 2746569Y CN 200420115888 CN200420115888 CN 200420115888 CN 200420115888 U CN200420115888 U CN 200420115888U CN 2746569 Y CN2746569 Y CN 2746569Y
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- butterfly array
- butterfly
- rectangle
- antenna
- parallel
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Abstract
The utility model discloses a burried butterfly array antenna, comprising a plurality of butterfly array units made of conducting wires. Every butterfly array unit is provided with two symmetrical lateral wings and rectangles with the same shapes and mutually parallel positions, and the long edge of a rectangle is crossed with the short edge of the other rectangle at the position of a set of symmetrical top corners in the inner sides of the lateral wings. Two lateral wings at the outer sides of the rectangles are provided with output ports connected with an antenna identifying device, and the output ports are connected with a tuner capacitor in parallel. The antenna signals of the butterfly array units are output by the output ports mutually connected in parallel. The burried butterfly array antenna of the utility model is suitable for a low frequency long distance induction card identifying system in a large-scale space, and effective identification in a rang with the width of 15 m, the depth of 3 m and the height of 1.8 m can be realized. For receiving signals, array units are not affected mutually, and receiving sensitivity is high; the quantity of the array units can be increased, receiving range is effectively enlarged, and omnidirectional no blind spot identification is realized.
Description
Technical field
The utility model relates to the communication technology, particularly a kind of buried butterfly array antenna.
Background technology
At present, be used for the gate control system of personal management, card reader is used is squaerial, the Breadth Maximum of cog region generally can only reach 3～4 meters, and has tangible blind area, when strengthening antenna size, it is big that the blind area of squaerial also becomes thereupon, and sensitivity simultaneously descends.Because office gate, compound gate width are big, general all more than 8 meters, even reach more than 15 meters, and require in the height in 4～5 meters in space at an upper portion thereof obstacle to be arranged, therefore, the selection of antenna form, structure, size, material directly influences recognition effect, causes conventional shaped as frame induction antenna normally to use.
In addition, because the high frequency product has potential harm to human body, at present, gate inhibition's recognition system requires to be operated in low-frequency range (general tranmitting frequency is 153kHz, and receive frequency is 115kHz), and conventional shaped as frame induction antenna also can't meet the demands.
The utility model content
The purpose of this utility model is to overcome above-mentioned defective, and a kind of buried butterfly array antenna that is operated in low-frequency range, high sensitivity, big range of receiving, the identification of no blind spot is provided.
For achieving the above object, the buried butterfly array antenna of the utility model, comprise some butterfly array elements made from lead, each described butterfly array element has two flanks of symmetry, and it is shaped as identical rectangle, and long limit is 2500mm, minor face is 900mm, two flank positions are parallel to each other, and at the position of the inboard one group of symmetry drift angle of described flank, the long limit of one of them rectangle intersects with the minor face of another rectangle and links to each other; Distance between the adjacent described butterfly array element is 30mm, and the distance of described two flank rectangle inner side edges is 1200mm; Described two flanks are positioned at the rectangle outer side edges to have and is used for the output port that links to each other with identifier, and described output port is parallel with tuning capacitor, and the aerial signal of described butterfly array element is by described output port output parallel with one another.
The buried butterfly array antenna of the utility model, wherein said lead is 4mm
2Copper cash.
The buried butterfly array antenna of the utility model, wherein said lead has the plastic protective sleeve pipe, and described tuning capacitor has seal box.
The advantage of the buried butterfly array antenna of the utility model is: owing to adopt the design of buried butterfly array, be applicable to the low frequency distance sensing card identifying system in the large scale space, can have realized at present effective identification of wide 15 meters, 3 meters of depths, high 1.8 meters scopes.To received signal, array is independent of each other between each unit, and very high receiving sensitivity is arranged; Array element quantity can increase, and has effectively enlarged range of receiving, realizes omnibearing no blind spot identification.
Be elaborated with reference to accompanying drawing below in conjunction with embodiment, so that the purpose of this utility model, feature and advantage are had deep understanding.
Description of drawings
Fig. 1 is the circuit diagram of the buried butterfly array antenna of the utility model;
Fig. 2 is the structural representation of the buried butterfly array antenna of the utility model;
Fig. 3 is the scheme of installation of the buried butterfly array antenna of the utility model.
Embodiment
Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.
See figures.1.and.2, buried butterfly array antenna comprises some butterfly array elements 1, generally adopts 6-8.In the utility model embodiment, butterfly array element 1 is 6, uses 4mm
2Copper cash make.The plastic protective sleeve pipe is equipped with in the copper cash outside.Each butterfly array element 1 has the identical rectangle flank 2 of two shapes of symmetry, its long limit is 2500mm, and minor face is 900mm, and its position is parallel to each other, and at the position of flank 2 inboard one group of symmetry drift angle, the long limit of one of them rectangle intersects with the minor face of another rectangle and links to each other.Distance between the adjacent butterfly array element 1 is 30mm.The distance of two flanks, 2 rectangle inner side edges is 1200mm.Two flanks 2 are positioned at the rectangle outer side edges to have and is used for the output port 3 that links to each other with identifier, and port 3 is parallel with tuning capacitor 4.Tuning capacitor 4 is contained in the seal box.The aerial signal of butterfly array element 1 is by output port parallel with one another 3 outputs.
With reference to Fig. 3, the buried butterfly array antenna that the utility model embodiment provides is applied to the gate control system of personal management.Antenna is installed in the underground of sentry box warning position, is applicable to the low frequency distance sensing card identifying system in the large scale space, can realize effective identification of wide 15 meters, 3 meters of depths, high 1.8 meters scopes at present.Be subjected to the monitor staff through warning during the position when what carry contactless card, personal information during the antenna identifier will block sends main frame to, main frame accesses information such as the photo that is subjected to the monitor staff in the database, unit, name and is presented on the special-purpose display screen in sentry box, the sentry can contrast by portrait, examine personnel identity, determine whether to let pass.
The buried butterfly array antenna that the utility model embodiment provides to received signal, is operated in low-frequency range (tranmitting frequency 153khz, receive frequency 115khz), and array is independent of each other between each unit, and very high receiving sensitivity is arranged; Array element quantity can suitably increase according to the size at warning position, has effectively enlarged range of receiving, realizes omnibearing no blind spot identification.
Claims (3)
1. buried butterfly array antenna, it is characterized in that, comprise some butterfly array elements (1) made from lead, each described butterfly array element (1) has two flanks (2) of symmetry, and described flank (2) is the identical rectangle of shape, and long limit is respectively 2500mm, minor face is respectively 900mm, two described flanks (2) position is parallel to each other, and at the position of the inboard one group of symmetry drift angle of described flank (2), the long limit of one of them rectangle intersects with the minor face of another rectangle and links to each other; Distance between the adjacent described butterfly array element (1) is 30mm, and the distance of described two flanks (2) rectangle inner side edge is 1200mm; Described two flanks (2) are positioned at the rectangle outer side edges to have and is used for the output port (3) that links to each other with identifier, described output port (3) is parallel with tuning capacitor (4), and the aerial signal of described butterfly array element (1) is by described output port (3) output parallel with one another.
2. according to the buried butterfly array antenna of claim 1, wherein said lead is 4mm
2Copper cash.
3. according to the buried butterfly array antenna of claim 1 or 2, wherein said lead has the plastic protective sleeve pipe, and described tuning capacitor (4) has seal box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420115888 CN2746569Y (en) | 2004-12-01 | 2004-12-01 | Burried butterfly array antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420115888 CN2746569Y (en) | 2004-12-01 | 2004-12-01 | Burried butterfly array antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2746569Y true CN2746569Y (en) | 2005-12-14 |
Family
ID=35583146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420115888 Expired - Fee Related CN2746569Y (en) | 2004-12-01 | 2004-12-01 | Burried butterfly array antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2746569Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101800362A (en) * | 2010-04-09 | 2010-08-11 | 海宁胜百信息科技有限公司 | Butterfly oscillator array antenna |
-
2004
- 2004-12-01 CN CN 200420115888 patent/CN2746569Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101800362A (en) * | 2010-04-09 | 2010-08-11 | 海宁胜百信息科技有限公司 | Butterfly oscillator array antenna |
| CN101800362B (en) * | 2010-04-09 | 2012-12-12 | 海宁胜百信息科技有限公司 | Butterfly oscillator array antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |