CN104953273A - Small-sized coplanar waveguide fed ultra-wide band antenna - Google Patents
Small-sized coplanar waveguide fed ultra-wide band antenna Download PDFInfo
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- CN104953273A CN104953273A CN201510422590.1A CN201510422590A CN104953273A CN 104953273 A CN104953273 A CN 104953273A CN 201510422590 A CN201510422590 A CN 201510422590A CN 104953273 A CN104953273 A CN 104953273A
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Abstract
The invention relates to a small-sized coplanar waveguide fed ultra-wide band antenna, and belongs to the technical filed of wireless communication. The small-sized coplanar waveguide fed ultra-wide band antenna comprises a rectangular FR4 dielectric slab with the dielectric constant being 4.6, a first step-type microstrip structure, a second step-type microstrip structure, a double-arch-bridge type microstrip structure, a moon-shaped microstrip structure, a rectangular microstrip structure, a rectangular microstrip feedline, a first arc-slope-shaped microstrip structure and a second arc-slope-shaped microstrip structure, wherein the first step-type microstrip structure, the second step-type microstrip structure, the double-arch-bridge type microstrip structure, the moon-shaped microstrip structure and the rectangular microstrip structure form a radiation sticker with a small semi-circular groove, a big semi-circular groove and a rectangular groove; the first arc-slope-shaped microstrip structure and the second first arc-slope-shaped microstrip structure form a common ground structure; a gap is formed between the first arc-slope-shaped microstrip structure and the rectangular microstrip feedline as well as between the second arc-slope-shaped microstrip structure and the rectangular microstrip feedline, so that coplanar waveguide is formed. The small-sized coplanar waveguide fed ultra-wide band antenna provided by the invention is simple in structure, compact in size, low in cost, high in precision, wide in frequency band, good in radiation characteristic, easy to integrate and suitable for small and portable ultra wide band terminal equipment.
Description
Technical field
The present invention relates to a kind of miniaturized coplanar wave guide feedback ultra-wideband antenna, belong to wireless communication technology field.
Background technology
Ultra broadband (Ultra-wideband, UWB) technology is the one novel short distance high-rate wireless communication technology received much concern at present.Since 3.1GHz-10.6GHz frequency range is divided into radio ultra wide band system frequency range by FCC, industrial quarters and academia have carried out a large amount of research work in Ultra-Wide Band Radio field.As an important component part of radio ultra wide band system, ultra-wideband antenna has attracted to study widely in wideband impedance match, stable antenna pattern, miniaturization and low cost.
At present, a large amount of plane UWB microstrip antenna is suggested, and they can cover greatly the UWB frequency range of 3.1GHz-10.6GHz, and have good radiation characteristic.But many UWB antennas still have oversize, the structure too shortcoming such as complexity ,-10dB impedance bandwidth partially narrow (only can cover 3.1GHz-10.6GHz frequency range reluctantly or just).Therefore, need design size little, structure is simple, the UWB microstrip antenna of bandwidth of operation wider (being greater than 7.5GHz as much as possible).
The miniaturized coplanar wave guide feedback ultra-wideband antenna of one of the present invention's design, by literature search, has no the open report identical with the present invention.
Summary of the invention
The object of the invention is to the deficiency overcoming prior art, design a kind of miniaturized coplanar wave guide feedback ultra-wideband antenna.
The miniaturized coplanar wave guide feedback ultra-wideband antenna of one in the present invention is made up of following seven parts: dielectric-slab (1), first " ladder " shape microstrip structure (2), second " ladder " shape microstrip structure (3), " diplopore bridge " shape microstrip structure (4), " moon " shaped microstrip structure (5), rectangular microstrip structure (6), rectangular microstrip feeder line (7), first " circular arc slope " shape microstrip structure (8) and second " circular arc slope " shape microstrip structure (9), wherein:
A. dielectric-slab (1) is cuboid, adopt dielectric constant be 4.6 and loss angle tangent be 0.02 FR4 dielectric material, it is of a size of 20mm*15mm*1.6mm;
B. first " ladder " shape microstrip structure (2) and second " ladder " shape microstrip structure (3) measure-alike, symmetrical relative to the dielectric-slab longitudinal axis;
C. " diplopore bridge " shape microstrip structure (4) are by etching smaller part circular groove (10) and more than half circular groove (11) obtains on the microband paste identical with " moon " shaped microstrip structure (5);
D. first " circular arc slope " shape microstrip structure (8) obtain by etching quadrant groove (13), horizontal direction rectangular channel (14) and vertical direction rectangular channel (15) on rectangular patch respectively, first " circular arc slope " shape microstrip structure (8) and second " circular arc slope " shape microstrip structure (9) measure-alike, symmetrical relative to the dielectric-slab longitudinal axis.
Described first " ladder " shape microstrip structure (2), second " ladder " shape microstrip structure (3), " diplopore bridge " shape microstrip structure (4), " moon " shaped microstrip structure (5), rectangular microstrip structure (6) form the radiation patch of UWB antenna; Described first " ladder " shape microstrip structure (2), second " ladder " shape microstrip structure (3), " diplopore bridge " shape microstrip structure (4), " moon " shaped microstrip structure (5), rectangular microstrip structure (6) surround the semi-open type groove that comprises smaller part circular groove (10), more than half circular groove (11) and rectangular channel (12).The basic configuration of this radiation patch is circular, is conducive to like this obtaining better ultra wideband; First " ladder " shape microstrip structure (2), second " ladder " shape microstrip structure (3) and etching smaller part circular groove (10) and the favourable impedance matching improving antenna of rectangular channel (12) is introduced at the top of this circular patch; Circular patch etches the bandwidth that more than half circular groove (11) is conducive to extended antenna low frequency end.In addition, radiation patch introduces the area that this semi-open type groove can reduce radiation patch metallic member greatly, thus reduces antenna cost by a relatively large margin.
First " circular arc slope " shape microstrip structure (8) and second " circular arc slope " shape microstrip structure (9) form earth construction altogether, first quadrant groove (13), second quadrant groove (14), first horizontal direction rectangular channel (15) and the second horizontal direction rectangular channel (16) are used for spreading antenna bandwidth, the first rectangular channel (17) on vertical direction and the second rectangular channel (18) are used for improving the impedance matching of antenna, gap is had between microstrip feed line (7) and first " circular arc slope " shape microstrip structure (8) and second " circular arc slope " shape microstrip structure (9), form co-planar waveguide.
The present invention is compared with existing UWB antenna, and tool has the following advantages:
1. antenna size is little, and structure is simple, can meet the requirement of antenna miniaturization well;
2. have wider bandwidth, antenna-10dB impedance bandwidth reaches 10.32GHz (2.97GHz-13.29GHz);
3. antenna pattern is stablized, and has good omnidirectional radiation characteristic;
4. cost of manufacture is low, precision is high, favorable repeatability, is convenient to batch production.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is radiation patch structure.
Fig. 3 is for being total to earth construction and microstrip feed line.
Fig. 4 is the test result of antenna return loss (S11) in the present invention.
Fig. 5 is the testing radiation directional diagram of Antenna Operation when 3.5GHz on XOZ face in the present invention.
Fig. 6 is the testing radiation directional diagram of Antenna Operation when 3.5GHz on YOZ face in the present invention.
Fig. 7 is the testing radiation directional diagram of Antenna Operation when 5.5GHz on XOZ face in the present invention.
Fig. 8 is the testing radiation directional diagram of Antenna Operation when 5.5GHz on YOZ face in the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further described.
As shown in Figure 1, the miniaturized coplanar wave guide feedback ultra-wideband antenna of one in the present invention is made up of following seven parts: dielectric-slab (1), first " ladder " shape microstrip structure (2), second " ladder " shape microstrip structure (3), " diplopore bridge " shape microstrip structure (4), " moon " shaped microstrip structure (5), rectangular microstrip structure (6), rectangular microstrip feeder line (7), first " circular arc slope " shape microstrip structure (8) and second " circular arc slope " shape microstrip structure (9), wherein:
A. dielectric-slab (1) is cuboid, adopt dielectric constant be 4.6 and loss angle tangent be 0.02 FR4 dielectric material, it is of a size of 20mm*15mm*1.6mm;
B. first " ladder " shape microstrip structure (2) and second " ladder " shape microstrip structure (3) measure-alike, symmetrical relative to the dielectric-slab longitudinal axis, they are connected with " moon " shaped microstrip structure (5) with " diplopore bridge " shape microstrip structure (4) respectively;
C. " diplopore bridge " shape microstrip structure (4) are that it is connected with rectangular microstrip structure (6) by etching smaller part circular groove (10) and more than half circular groove (11) obtains on the microband paste identical with " moon " shaped microstrip structure (5);
D. first " ladder " shape microstrip structure (2), second " ladder " shape microstrip structure (3), " diplopore bridge " shape microstrip structure (4), " moon " shaped microstrip structure (5), rectangular microstrip structure (6) surround the semi-open type groove that comprises smaller part circular groove (10), more than half circular groove (11) and rectangular channel (12), they form the radiation patch of antenna jointly, are directly connected with rectangular microstrip feeder line (7);
E. first " circular arc slope " shape microstrip structure (8) are by etching the first quadrant groove (13) on rectangular patch respectively, first horizontal direction rectangular channel (15) and vertical direction first rectangular channel (17) obtain, second " circular arc slope " shape microstrip structure (9) are by etching the second quadrant groove (14) on rectangular patch respectively, second horizontal direction rectangular channel (16) and vertical direction second rectangular channel (18) obtain, first " circular arc slope " shape microstrip structure (8) and second " circular arc slope " shape microstrip structure (9) measure-alike, symmetrical relative to the dielectric-slab longitudinal axis, and form gap with microstrip feed line (7), form co-planar waveguide,
F. above-mentioned all microstrip structures are all printed in the same face of dielectric-slab (1).
In the present invention, the final size of UWB antenna is 20mm*15mm*1.6mm, has good compactedness.The test result of antenna return loss as shown in Figure 4.Test result shows, and the working frequency range of antenna S11≤-10dB is: 2.97-13.29GHz, and antenna-10dB impedance bandwidth reaches 10.32GHz, covers 3.1-10.6GHz frequency range well.In the present invention, the testing radiation directional diagram of UWB antenna respectively when 3.5GHz, 5.5GHz place on XOZ face and YOZ face is as shown in Fig. 5 to Fig. 8.From test result, this antenna has stable directional diagram and has good omnidirectional radiation characteristic.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.
In addition, be to be understood that, although this specification is described according to execution mode, but not each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, and the technical scheme in each embodiment also through appropriately combined, can form other execution modes that it will be appreciated by those skilled in the art that.
Claims (3)
1. a miniaturized coplanar wave guide feedback ultra-wideband antenna, comprise: dielectric-slab (1), first " ladder " shape microstrip structure (2), second " ladder " shape microstrip structure (3), " diplopore bridge " shape microstrip structure (4), " moon " shaped microstrip structure (5), rectangular microstrip structure (6), rectangular microstrip feeder line (7), first " circular arc slope " shape microstrip structure (8) and second " circular arc slope " shape microstrip structure (9), wherein:
A. dielectric-slab (1) is cuboid, adopt dielectric constant be 4.6 and loss angle tangent be 0.02 FR4 dielectric material, it is of a size of 20mm*15mm*1.6mm;
B. first " ladder " shape microstrip structure (2) and second " ladder " shape microstrip structure (3) measure-alike, symmetrical relative to the dielectric-slab longitudinal axis;
C. " diplopore bridge " shape microstrip structure (4) are by etching smaller part circular groove (10) and more than half circular groove (11) obtains on the microband paste identical with " moon " shaped microstrip structure (5);
D. first " circular arc slope " shape microstrip structure (8) are by etching the first quadrant groove (13) on rectangular patch respectively, first horizontal direction rectangular channel (15) and vertical direction first rectangular channel (17) obtain, second " circular arc slope " shape microstrip structure (9) are by etching the second quadrant groove (14) on rectangular patch respectively, second horizontal direction rectangular channel (16) and vertical direction second rectangular channel (18) obtain, first " circular arc slope " shape microstrip structure (8) and second " circular arc slope " shape microstrip structure (9) measure-alike, symmetrical relative to the dielectric-slab longitudinal axis.
2. the miniaturized coplanar wave guide feedback ultra-wideband antenna of one according to claim 1, it is characterized in that: described first " ladder " shape microstrip structure (2), second " ladder " shape microstrip structure (3), " diplopore bridge " shape microstrip structure (4), " moon " shaped microstrip structure (5), rectangular microstrip structure (6) forms the radiation patch of antenna, described first " ladder " shape microstrip structure (2), second " ladder " shape microstrip structure (3), " diplopore bridge " shape microstrip structure (4), " moon " shaped microstrip structure (5), rectangular microstrip structure (6) surrounds one and comprises smaller part circular groove (10), the semi-open type groove of more than half circular groove (11) and rectangular channel (12).
3. the miniaturized coplanar wave guide feedback ultra-wideband antenna of one according to claim 1, it is characterized in that: described first " circular arc slope " shape microstrip structure (8) and second " circular arc slope " shape microstrip structure (9) form earth construction altogether, first quadrant groove (13), the second quadrant groove (14), the first horizontal direction rectangular channel (15) and the second horizontal direction rectangular channel (16) are used for spreading antenna bandwidth, and the first rectangular channel (17) on vertical direction and the second rectangular channel (18) are used for improving the impedance matching of antenna.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106067596A (en) * | 2016-05-23 | 2016-11-02 | 重庆邮电大学 | Miniaturization broadband medium resonator antenna based on coplanar wave guide feedback |
| CN106299727A (en) * | 2016-11-03 | 2017-01-04 | 云南大学 | Low-cross coupling 4 unit ultra broadband mimo antenna |
| CN106532235A (en) * | 2016-11-03 | 2017-03-22 | 云南大学 | 4*4 ultra-wideband MIMO antenna |
| CN106935967A (en) * | 2016-11-03 | 2017-07-07 | 云南大学 | The double trap UWB antennas of miniaturization based on EBG |
| CN108987919A (en) * | 2018-07-24 | 2018-12-11 | 西安电子科技大学 | A kind of polygon ultra-wideband antenna of compact unsymmetric structure |
| CN109659679A (en) * | 2018-11-23 | 2019-04-19 | 路飞 | Wide-band microstrip aerial based on communications band |
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| CN100414770C (en) * | 2005-12-08 | 2008-08-27 | 上海交通大学 | Coplane waveguide feed ultra wideband fractal antenna |
| KR100872177B1 (en) * | 2006-12-01 | 2008-12-09 | 한국전자통신연구원 | Ultra-Wide Band antenna |
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| CN100414770C (en) * | 2005-12-08 | 2008-08-27 | 上海交通大学 | Coplane waveguide feed ultra wideband fractal antenna |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106067596A (en) * | 2016-05-23 | 2016-11-02 | 重庆邮电大学 | Miniaturization broadband medium resonator antenna based on coplanar wave guide feedback |
| CN106299727A (en) * | 2016-11-03 | 2017-01-04 | 云南大学 | Low-cross coupling 4 unit ultra broadband mimo antenna |
| CN106532235A (en) * | 2016-11-03 | 2017-03-22 | 云南大学 | 4*4 ultra-wideband MIMO antenna |
| CN106935967A (en) * | 2016-11-03 | 2017-07-07 | 云南大学 | The double trap UWB antennas of miniaturization based on EBG |
| CN106532235B (en) * | 2016-11-03 | 2019-09-17 | 云南大学 | 4 × 4 ultra wide band mimo antennas |
| CN106299727B (en) * | 2016-11-03 | 2020-04-07 | 云南大学 | Low mutual coupling 4-unit ultra-wideband MIMO antenna |
| CN108987919A (en) * | 2018-07-24 | 2018-12-11 | 西安电子科技大学 | A kind of polygon ultra-wideband antenna of compact unsymmetric structure |
| CN109659679A (en) * | 2018-11-23 | 2019-04-19 | 路飞 | Wide-band microstrip aerial based on communications band |
| CN109659679B (en) * | 2018-11-23 | 2020-07-03 | 广东浩信通信科技有限公司 | Broadband microstrip antenna based on communication frequency band |
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