CN102820525B - Small-sized flat plate ultra wideband antenna - Google Patents
Small-sized flat plate ultra wideband antenna Download PDFInfo
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- CN102820525B CN102820525B CN201210148212.5A CN201210148212A CN102820525B CN 102820525 B CN102820525 B CN 102820525B CN 201210148212 A CN201210148212 A CN 201210148212A CN 102820525 B CN102820525 B CN 102820525B
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- antenna
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- ultra wideband
- flat plate
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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 radio detection technical field, relate to a kind of Small-scale Flat antenna.
Background technology
The develop rapidly of super wideband wireless detection technique brings the progressive again of Non-Destructive Testing.The transmission speed of super wideband wireless data is faster, and packet is larger containing 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.Ultra-wideband antenna of good performance is the key guaranteeing that detecting reliability, high speed and anti-interference are good, and the design of ultra-wideband antenna becomes the most important thing of super wideband wireless detection technique.In order to adapt to the demand of the high speed circuit application such as radio circuit, the Miniaturization Design of antenna becomes crucial, and microstrip-monopole antenna is easy to the bandwidth regulating antenna, and it can be integrated with high speed circuit easily, meets equipment high integration, the requirement of low-power consumption.The square groove structure that unipole antenna adds can reduce antenna size, is conducive to antenna miniaturization.For application, use " no " font extremely son adjusts antenna one direction radiance effectively, reduces the mutual crosstalk between aerial array.Many designs make ultra-wideband antenna more easily be applied in reality detects above.
Summary of the invention
The object of this invention is to provide the ultra-wideband antenna that a kind of sized spectral bands is wider, unilateral gain is higher.Antenna pattern rule provided by the invention, be applicable to rule and arrange and form aerial array, antenna directivity is good, and one direction penetration capacity is strong, is applicable to the application of detection field.Technical scheme of the present invention is as follows:
A kind of small size flat plate ultra wideband antenna, comprise feeding electrode and fluting ground plate that are produced in substrate two sides, it is characterized in that, described feeding electrode is " no " font, extremely son is in four fork shapes, the one-way radiations of two that are connected in yi word pattern above horizontal forks for adjusting antenna, two oblique fork adjustment feeding electrode and the gaps of slotting between ground plate, two oblique forks from top to bottom and between fluting ground plate are formed by wide to narrow gap.
Preferably, the angle laterally between fork and two oblique forks is 45° angle; Described antenna is of a size of 16mm × 16mm, and width and the length of the fluting of fluting ground plate are respectively 13mm × 14mm, and the total length (w) of two its connected component of connection that laterally diverge is consistent with the length of fluting, and the height (h) of feeding electrode is 8.1mm; 4. the width of the sub-feeder line of feeding electrode is 2mm, and extremely two width laterally diverged of son are 1mm, and the width of two 45° angle 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, use " no " font feeding electrode to realize the one direction radiation of antenna, guarantee that antenna one direction penetration power is strong, gain is high.By series of optimum, the final size of antenna is 16mm × 16mm, and thickness is 1mm, and the size of microstrip antenna is applicable to the miniature antenna array in medical detecting Instrument very much.The 10dB return loss frequency coverage of antenna, from 5G Hz to 7.7G Hz, comprises the centre frequency 6GHz needed for detection signal, and bandwidth is the return loss S of 2.7GHz, antenna
11curve as shown in Figure 4.The antenna extremely front directive gain of son reaches 3.5dB, and unilateral gain is higher, and antenna is very little at antenna with side radiation direction.Can be applied to medical treatment to detect in the panel antenna array used, each antenna antenna with side radiation direction is suppressed, and interference is less mutually, lower power consumption.
Accompanying drawing explanation
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
As shown in Figures 1 to 3, the directional diagram of antenna as shown in Figure 5 for antenna structure of the present invention.After fluting, annular feed floor 6(copper becomes) change current trend, electric current is along the feed-in of floor bottoms center, via the both sides on fluting floor, finally form annular feed network, compared to feed floor of not slotting, annular feed network increases effective feed length greatly, the size of favourable reduction microstrip antenna.Adopt " no " font extremely sub, extremely son is in four fork shapes, as Fig. 1, two are laterally diverged 3 for adjusting the one-way radiation of antenna above, the antenna with side radiation direction of antenna is suppressed, and antenna to the forward direction of extremely son or backwardly can only carry out radiation, meets unidirectional high-gain, jamproof performance requirement.The oblique fork 4 of two 45° angles adjusts the sub-2(copper of antenna feed electrode and becomes below) and feed floor 6 between gap, two forks and to be formed by wide to narrow gap between feed floor, realize the nominated bandwidth of antenna from top to bottom.Antenna substrate 1 material adopts FR4, and this kind of material price is cheap, is easy to processing.
The present invention, by adopting grooving techniques, opens rectangular channel 7 to feed floor 6, can effectively reduce antenna size, and make antenna reach nominated bandwidth.Finally determine that the length of fluting and width are respectively 13mm × 14mm by simulation optimization.Feeder line is wide is 2mm, and laterally two forks are wide is 1mm, two fork width of 45° angle are 1.41mm, when determining as w=14mm, h=8.1mm through optimizing, antenna has very high single radial characteristic at required bandwidth 5GHz to 7.7GHz place, as shown in Figure 5, its extremely sub-forward radiation intensity reaches the gain of 3.5dB, and side direction 60 degree of place's radiation gains are less than-4dB, meet the requirement of antenna one-way radiation, the mutual interference of different antennae between effective reduction aerial array, strengthens antenna penetration capacity, makes testing result accurately reliable.
Claims (3)
1. a small size flat plate ultra wideband antenna, comprise the rectangle feed line and connected radiating element that are produced on substrate front side, what be produced on substrate back opens rectangular channel ground plate, it is characterized in that, article one, the rectangle feed line of bordering on base is connected to the radiating element of shape of diverging in four, two one-way radiations laterally diverged for adjusting antenna be connected in yi word pattern above in four fork radiating elements, two oblique fork adjustment radiating elements and the horizontal clearance opened between rectangular channel ground plate, two oblique forks from top to bottom and between fluting ground plate are formed by wide to narrow gap.
2. small size flat plate ultra wideband antenna according to claim 1, is characterized in that, two horizontal forks are in same level position, and the angle between two oblique forks is respectively 45° angle and 135 ° of angles.
3. small size flat plate ultra wideband antenna according to claim 1, it is characterized in that, described antenna is of a size of 16mm × 16mm, width and the length of the fluting of fluting ground plate are respectively 13mm × 14mm, the Breadth Maximum (w) of four fork radiating elements is consistent with the length of slotting, and the feed line be integrated and radiating element are 8.1mm along the maximum length (h) of substrate surface; The width of the rectangle feed line of bordering on base is 2mm, and the width that be connected with feed line 4 two of diverging in radiating element laterally diverge is 1mm, and the width between two oblique forks laterally between fork and feeder line 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 CN102820525A (en) | 2012-12-12 |
| CN102820525B true 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 |
Country Status (1)
| Country | Link |
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| CN (1) | CN102820525B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108423198B (en) * | 2018-01-25 | 2021-03-23 | 天津大学 | Folding and unfolding flat plate structure with variable radial 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 |
| CN109638417B (en) * | 2019-01-30 | 2024-01-26 | 福州大学 | Miniaturized low-profile directional 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 |
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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 |
|---|
| A Comparison of a Wide-Slot and a Stacked Patch;David Gibbins等;《IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION》;20100331;第58卷(第3期);665-674 * |
| Bandwidth Enhancement of a Microstrip-Line-Fed;Jia-Yi Sze等;《IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION》;20010630;第9卷(第7期);1020-1024 * |
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| Publication number | Publication date |
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| CN102820525A (en) | 2012-12-12 |
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