CN102820525A - Small-sized flat plate ultra wideband antenna - Google Patents
Small-sized flat plate ultra wideband antenna Download PDFInfo
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- CN102820525A CN102820525A CN2012101482125A CN201210148212A CN102820525A CN 102820525 A CN102820525 A CN 102820525A CN 2012101482125 A CN2012101482125 A CN 2012101482125A CN 201210148212 A CN201210148212 A CN 201210148212A CN 102820525 A CN102820525 A CN 102820525A
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- forks
- ground plate
- feeding electrode
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Abstract
The invention belongs to the technical field of wireless detection, and relates to a small-sized flat plate ultra wideband antenna, which comprises a feed pole and a slotted grounding plate which are manufactured on two faces of a substrate respectively, and is characterized in that the feed pole is shaped like a Chinese character ''bu''; the pole is four-pointed; two transverse forks which are connected straightly on the pole are used for adjusting unidirectional radiation of the antenna; two oblique forks are used for adjusting a gap between the feed pole and the slotted ground plate; and the two oblique forks form a narrowing gap with the slotted ground plate from top to bottom. The antenna provided by the invention has a regular shape, is suitable for regular arrangement, forms an antenna array, has good antenna directivity and high unidirectional penetrating power and is suitable for being applied to the field of detection.
Description
Technical field
The invention belongs to the radio detection technical field, relate to a kind of small-sized plate aerial.
Background technology
The develop rapidly of super wideband wireless detection technique has brought the progressive again of Non-Destructive Testing.The transmission speed of super wideband wireless data is faster, and it is bigger that data comprise amount of information, and power consumption is lower, and equipment cost is lower, and confidentiality is stronger, and penetrability is better, and these advantages are that conventional radio detection technology does not have.Well behaved ultra-wideband antenna is a key of guaranteeing that detecting reliability, high speed property and anti-interference are good, the most important thing that is designed to the super wideband wireless detection technique of ultra-wideband antenna.In order to adapt to high speed circuit demands of applications such as radio circuit, the miniaturization Design of antenna becomes key, and the microstrip-monopole antenna is easy to regulate the bandwidth of antenna, and it can be integrated with high speed circuit easily, satisfies the equipment high integration, the requirement of low-power consumption.The square groove structure that unipole antenna adds can reduce antenna size, helps antenna miniaturization.To application, antenna folk prescription radiotropism ability adjusted effectively in use " no " font extremely son, reduces crosstalking each other between the aerial array.More than many designs make ultra-wideband antenna more be prone to be applied in actual detected.
Summary of the invention
The purpose of this invention is to provide a kind of size frequency band broad, the higher ultra-wideband antenna of unilateral gain.Antenna pattern rule provided by the invention, suitable rule is arranged and is formed aerial array, and antenna directivity is good, and folk prescription is strong to penetration capacity, is fit to the application of detection range.Technical scheme of the present invention is following:
The dull and stereotyped ultra-wideband antenna of a kind of small size; Comprise feeding electrode and fluting ground plate that are produced in the substrate two sides, it is characterized in that described feeding electrode is " no " font; Extremely son is four fork shapes; Be above that yi word pattern links to each other two laterally fork be used to adjust the one-way radiation property of antenna, the gap between two oblique forks adjustment feeding electrode and the fluting ground plate, two oblique forks from top to bottom and between the fluting ground plate form by wide to narrow gap.
As preferred implementation, laterally the angle between fork and two the oblique forks is 45; Said antenna is of a size of 16mm * 16mm, and the width and the length of the fluting of fluting ground plate are respectively 13mm * 14mm, and the total length (w) of two its parts that link to each other of connection that laterally diverge is consistent with the length of fluting, and the sub height (h) of feeding electrode is 8.1mm; 4. the width of the sub-feeder line of feeding electrode is 2mm, and extremely two of the son width that laterally diverge are 1mm, and the width of two 45 forks is 1.41mm.
The present invention improves existing feed floor slot antenna structure; Adjustment feed floor fluting size makes beamwidth of antenna performance reach requirement; The folk prescription that uses " no " font feeding electrode realization antenna guarantees that to radiation the antenna folk prescription is strong to penetration power, and gain is high.Through series of optimum, the final size of antenna is 16mm * 16mm, and thickness is 1mm, and the size of microstrip antenna is fit to the miniature antenna array in the medical detecting Instrument very much.Antenna-10dB return loss frequency coverage from 5GHz to 7.7GHz, comprise the required centre frequency 6GHz of detection signal, bandwidth is 2.7GHz, the return loss S of antenna
11Curve is shown in accompanying drawing 4.The extremely sub-the place ahead of antenna reaches 3.5dB to gain, and unilateral gain is higher, and antenna is very little in the side direction radiation.Can be applied to medical treatment and detect in the panel antenna array that uses, each antenna side is suppressed to radiation, and the phase mutual interference is less, and power consumption reduces.
Description of drawings
Fig. 1 antenna face map unit (mm).
Fig. 2 antenna back view unit (mm).
Fig. 3 antenna perspective view unit (mm).
The return loss S11 of Fig. 4 antenna is with frequency variation curve.
The directional diagram of Fig. 5 antenna.
Embodiment
Antenna structure of the present invention is shown in Fig. 1 to 3, and the directional diagram of antenna is as shown in Figure 5.Annular feed floor, fluting back 6 (copper one-tenth) have changed current trend; Electric current is along the feed-in of floor bottoms center; Both sides via the fluting floor form annular feeding network, at last than the feed floor of not slotting; The annular feeding network increases effective feed length, the favourable size that reduces microstrip antenna greatly.Adopt extremely son of " no " font, extremely son is four fork shapes, like Fig. 1; Above two laterally fork 3 be used to adjust the one-way radiation property of antenna; The side direction radiation of antenna is suppressed, and antenna can only satisfy unidirectional high-gain, jamproof performance requirement to extremely sub forward direction or back to carrying out radiation.Below oblique fork 4 adjustment antenna feed electrode 2 (copper one-tenth) and the gap between the feed floor 6 of two 45s, two forks are from top to bottom and form by wide to narrow gap the nominated bandwidth of realization antenna between the feed floor.Antenna substrate 1 material adopts FR4, and this kind material price is cheap, is easy to processing.
The present invention opens rectangular channel 7 through adopting the fluting technology to feed floor 6, can effectively reduce antenna size, and make antenna reach nominated bandwidth.Length and the width of finally confirming fluting through simulation optimization are respectively 13mm * 14mm.Feeder line is wide to be 2mm, and horizontal two forks wide be 1mm, two of the 45 width that diverge are 1.41mm; Confirm that through optimizing antenna has very high one-way radiation characteristic at required bandwidth 5GHz to the 7.7GHz place, as shown in Figure 5 when w=14mm, h 8.1mm; Its extremely sub-forward radiation intensity reaches the gain of 3.5dB; And side direction 60 degree place radiation gains have been satisfied the requirement of antenna one-way radiation less than-4dB, effectively reduce the phase mutual interference of different antennae between aerial array; The enhance antenna penetration capacity makes testing result accurately reliable.
Claims (4)
1. the dull and stereotyped ultra-wideband antenna of a small size; Comprise feeding electrode and fluting ground plate that are produced in the substrate two sides, it is characterized in that described feeding electrode is " no " font; Extremely son is four fork shapes; Be above that yi word pattern links to each other two laterally fork be used to adjust the one-way radiation property of antenna, the gap between two oblique forks adjustment feeding electrode and the fluting ground plate, two oblique forks from top to bottom and between the fluting ground plate form by wide to narrow gap.
2. the dull and stereotyped ultra-wideband antenna of small size according to claim 1 is characterized in that, laterally the angle between fork and two the oblique forks is 45.
3. the dull and stereotyped ultra-wideband antenna of small size according to claim 1; It is characterized in that; Said antenna is of a size of 16mm * 16mm; The width and the length of the fluting of fluting ground plate are respectively 13mm * 14mm, and the total length (w) of two its parts that link to each other of connection that laterally diverge is consistent with the length of fluting, and the sub height (h) of feeding electrode is 8.1mm.
4. the width of the sub-feeder line of feeding electrode is 2mm, and extremely two of the son width that laterally diverge are 1mm, and the width of two 45 forks is 1.41mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210148212.5A CN102820525B (en) | 2012-05-14 | 2012-05-14 | Small-sized flat plate ultra wideband antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210148212.5A CN102820525B (en) | 2012-05-14 | 2012-05-14 | Small-sized flat plate ultra wideband antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102820525A true CN102820525A (en) | 2012-12-12 |
| CN102820525B CN102820525B (en) | 2015-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210148212.5A Expired - Fee Related CN102820525B (en) | 2012-05-14 | 2012-05-14 | Small-sized flat plate ultra wideband antenna |
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| CN (1) | CN102820525B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108423198A (en) * | 2018-01-25 | 2018-08-21 | 天津大学 | A kind of folding flattening harden structure of variable dimension |
| CN109411900A (en) * | 2018-12-14 | 2019-03-01 | 湖南华诺星空电子技术有限公司 | A kind of broad-band antenna for through-wall radar imaging |
| CN109638417A (en) * | 2019-01-30 | 2019-04-16 | 福州大学 | A kind of miniaturization low section orientation reader antenna and terminal applied to RFID |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102280705A (en) * | 2011-05-13 | 2011-12-14 | 天津大学 | Triangular polaron ultra wide band panel antenna |
-
2012
- 2012-05-14 CN CN201210148212.5A patent/CN102820525B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102280705A (en) * | 2011-05-13 | 2011-12-14 | 天津大学 | Triangular polaron ultra wide band panel antenna |
Non-Patent Citations (2)
| Title |
|---|
| DAVID GIBBINS等: "A Comparison of a Wide-Slot and a Stacked Patch", 《IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION》, vol. 58, no. 3, 31 March 2010 (2010-03-31) * |
| JIA-YI SZE等: "Bandwidth Enhancement of a Microstrip-Line-Fed", 《IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION》, vol. 9, no. 7, 30 June 2001 (2001-06-30) * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108423198A (en) * | 2018-01-25 | 2018-08-21 | 天津大学 | A kind of folding flattening harden structure of variable dimension |
| CN109411900A (en) * | 2018-12-14 | 2019-03-01 | 湖南华诺星空电子技术有限公司 | A kind of broad-band antenna for through-wall radar imaging |
| CN109638417A (en) * | 2019-01-30 | 2019-04-16 | 福州大学 | A kind of miniaturization low section orientation reader antenna and terminal applied to RFID |
| CN109638417B (en) * | 2019-01-30 | 2024-01-26 | 福州大学 | Miniaturized low-profile directional reader antenna and terminal applied to RFID |
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| Publication number | Publication date |
|---|---|
| CN102820525B (en) | 2015-04-08 |
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