CN103390791A - Double-band antenna for human body communication system - Google Patents
Double-band antenna for human body communication system Download PDFInfo
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- CN103390791A CN103390791A CN2012101416458A CN201210141645A CN103390791A CN 103390791 A CN103390791 A CN 103390791A CN 2012101416458 A CN2012101416458 A CN 2012101416458A CN 201210141645 A CN201210141645 A CN 201210141645A CN 103390791 A CN103390791 A CN 103390791A
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- human body
- band antenna
- communication system
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- body communication
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Abstract
The invention belongs to the field of communication antennas, and discloses a double-band antenna for a human body communication system. The double-band antenna is provided with an all-around and directional radiation patterns. The double-band antenna is composed of a medium substrate (1), an annular paster (2), a circular paster (3), an earth plate (4) and a short circuit pin (5). Probe feed is adopted. The double-band antenna is simple in structure, has a low profile, and can achieve radiation direction patterns in an all-around mode and single-direction mode at the same time.
Description
Technical field
The present invention relates to the communication antenna field, relate in particular to a kind of dual-band antenna that can be used for human body communication system.
Background technology
In recent years, human body communication system is subject to extensive concern.In human body communication system, all terminal equipments lay respectively at surface or the inside of human body of human body.In order can effectively to work, above-mentioned terminal must be set up three kinds of communication links simultaneously: the communication link of the link between human body surface and Exterior Communications System, the communication link between human body surface, human body surface and inside of human body.Therefore, above-mentioned three kinds of communication links just need to have the antenna pattern that function with it adapts.The antenna pattern that just need to have unidirectional (vertical with human body surface and outwards) as, human body surface and link between Exterior Communications System; Communication link between human body surface needs along the antenna pattern of human body surface omnidirectional.Terminal equipment can realize simultaneously that above-mentioned antenna pattern is desirable just, but at present less to the research of this respect.
Summary of the invention
Technical problem: the technical problem to be solved in the present invention is to provide a kind of simple in structure, has low section, and can realize simultaneously the antenna of the antenna pattern function of omnidirectional and unidirectional two kinds of forms.
Technical scheme: the present invention proposes can be used for the dual-band antenna of human body communication system, by dielectric substrate, and the ring-type paster, circular patch, ground plate, shorting pin forms, adopt fed by coaxial probe, circular patch is arranged in the semi-open chamber of ring-type paster, ground plate, shorting pin formation.
It is that 1/2, rb is 1/4 of design work wavelength that the internal diameter ra of ring-type paster meets ra/rb with the ratio of external diameter rb.
Shorting pin (5) is positioned on the ring circumference of ring-type paster, and is and is equally spaced, and makes ring-type paster and ground plate short circuit.
Beneficial effect: realize that with existing the Monopole class of omnidirectional radiation directional diagram or its deformed aerial compare, the dual-band antenna of realizing human body communication system of the present invention, longitudinal size only has the former 1/20; Next, the semi-open chamber that circular patch is arranged in ring-type paster, ground plate, shorting pin formation makes structure compacter; Moreover because the existence of shorting pin makes the isolation between two-port improve.Thereby the present invention, by encouraging different patterns can realize simultaneously the antenna pattern function of omnidirectional and unidirectional two kinds of forms, meets the requirement of human body communication system.
Description of drawings
Fig. 1 is the end view of the general structure of the dual-band antenna for human body communication system provided by the invention;
Fig. 2 is the top view of the general structure of the dual-band antenna for human body communication system provided by the invention;
Fig. 3 is that the dual-band antenna for human body communication system provided by the invention is at design frequency f
1The upper elevation radiation patytern of=2.4GHz;
Fig. 4 is that the dual-band antenna for human body communication system provided by the invention is at design frequency f
1=2.4GHz upper horizontal plane directional diagram;
Fig. 5 is that the dual-band antenna for human body communication system provided by the invention is at design frequency f
2The upper elevation radiation patytern of=5.8GHz;
Fig. 6 is the two-port return loss plot of the dual-band antenna for human body communication system provided by the invention;
Fig. 7 is the two-port isolation view of the dual-band antenna for human body communication system provided by the invention;
Have in above figure: medium substrate 1, annular paster 2, circular patch 3, ground plate 4, shorting pin 5.R wherein
a, r
bBe respectively the interior outer radius of annular paster, r
pFor the radius of circular patch, f
x, f
yBe respectively the distance at two distributing points and center.
Embodiment
The present invention will be described below with reference to accompanying drawings.
A kind of dual-band antenna that has omnidirectional and directed radiation directional diagram when can be used for human body communication system provided by the invention, by dielectric substrate 1, ring-type paster 2, circular patch 3, ground plate 4, shorting pin 5 forms.Adopt probe feed;
Wherein, the circular patch at center is arranged in the semi-open chamber of ring-type paster, ground plate, shorting pin formation.The inside and outside radius ratio of ring-type paster meets some requirements, r
a/ r
bBe about 1/2, r
bBe about 1/4 of design work wavelength.Shorting pin is positioned on the ring circumference of ring-type paster, and is and is equally spaced, and makes ring-type paster and ground plate short circuit.Referring to Fig. 1 and Fig. 2
Referring to Fig. 3～Fig. 7 be provided by the invention can be used for human body communication system the performance curve of dual-band antenna.Fig. 3-Fig. 5 is respectively for the dual-band antenna of human body communication system E face and the H face directional diagram in two centre frequencies of design; Fig. 6, Fig. 7 for be used for human body communication system return loss and the isolation of dual-band antenna two-port; Above-mentioned curve draws under above-mentioned specified criteria, if the curve that change structure parameter etc. also can be similarly.The curve negotiating computer simulation emulation obtains, and available simulation software is just like the HFSS of Ansoft company, the high frequency simulation softwares such as Microwave Studio CST of CST company.
But the present invention's continuation is contained: when the polarization of electromagnetic wave of feed radiation is oriented to left/right circular polarization, namely realize having the human body communication system dual-band antenna of circular polarization by choosing suitable distributing point.Secondly, when choosing wearable braid as dielectric substrate, above-mentioned parameter appropriately adjusts and gets final product.
Be convenient to illustrate the design process of each structural parameters, below explain based on given structural parameters, but this also without loss of generality.Given parameters: the thickness t=1.5mm of dielectric substrate, the inside and outside radius r of ring-type paster
a=17.5mm, r
b=35mm.Two distributing points and center apart from f
x=3.5mm, f
y=26.5mm.Two central task frequency f
1=2.4GHz, f
2=5.8GHz.
The foregoing is only preferred embodiments of the present invention; protection scope of the present invention is not limited with above-mentioned execution mode;, as long as the equivalence that those of ordinary skills do according to disclosed content is modified or changed, all should include in the protection range of putting down in writing in claims.
Claims (3)
1. dual-band antenna that can be used for human body communication system, it is characterized in that: by dielectric substrate (1), ring-type paster (2), circular patch (3), ground plate (4), shorting pin (5) forms, and adopts fed by coaxial probe, and circular patch (3) is arranged in the semi-open chamber of ring-type paster (2), ground plate (4), shorting pin (5) formation.
2. the dual-band antenna that can be used for human body communication system according to claim 1, it is characterized in that: it is that 1/2, rb is 1/4 of design work wavelength that the internal diameter ra of ring-type paster meets ra/rb with the ratio of external diameter rb.
3. the dual-band antenna that can be used for human body communication system according to claim 1, it is characterized in that: shorting pin (5) is positioned on the ring circumference of ring-type paster (2), and is and is equally spaced, and makes ring-type paster (2) and ground plate (4) short circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210141645.8A CN103390791B (en) | 2012-05-09 | 2012-05-09 | A kind of dual-band antenna that can be used for human body communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210141645.8A CN103390791B (en) | 2012-05-09 | 2012-05-09 | A kind of dual-band antenna that can be used for human body communication system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103390791A true CN103390791A (en) | 2013-11-13 |
| CN103390791B CN103390791B (en) | 2016-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210141645.8A Expired - Fee Related CN103390791B (en) | 2012-05-09 | 2012-05-09 | A kind of dual-band antenna that can be used for human body communication system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105470629A (en) * | 2015-12-31 | 2016-04-06 | 南京濠暻通讯科技有限公司 | Wearable annular dual-frequency button antenna |
| CN106375029A (en) * | 2016-11-19 | 2017-02-01 | 福州大学 | Current coupling type human body communication transceiver aided design system and method |
| CN109841951A (en) * | 2019-01-16 | 2019-06-04 | 北京科技大学 | SF single feed axial ratio bandwidth enhances circular polarization microstrip antenna |
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| EP0182614A1 (en) * | 1984-11-15 | 1986-05-28 | Toyota Jidosha Kabushiki Kaisha | Automobile antenna system |
| US20030231138A1 (en) * | 2002-06-17 | 2003-12-18 | Weinstein Michael E. | Dual-band directional/omnidirectional antenna |
| CN1921220A (en) * | 2006-07-24 | 2007-02-28 | 北京邮电大学 | Microstrip paster antenna applied in TD-SCDMA terminal |
| CN101038984A (en) * | 2007-05-10 | 2007-09-19 | 北京航空航天大学 | Design for miniaturized GPS microstrip patch antenna |
| CN101060199A (en) * | 2007-05-10 | 2007-10-24 | 北京航空航天大学 | A design method for compact and lamination structure microstrip antenna integrated with the receiving and sending functions |
| CN102148428A (en) * | 2011-02-22 | 2011-08-10 | 中国电子科技集团公司第二十六研究所 | Miniature high-gain single-feed-point dual-band dual-polarized microstrip antenna |
| CN202050051U (en) * | 2011-05-24 | 2011-11-23 | 广州思泰信息技术有限公司 | Double-frequency microstrip patch antenna used for high-precision measurement |
| CN202772257U (en) * | 2012-05-09 | 2013-03-06 | 中博信息技术研究院有限公司 | Dual-frequency antenna for human communication system |
-
2012
- 2012-05-09 CN CN201210141645.8A patent/CN103390791B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0182614A1 (en) * | 1984-11-15 | 1986-05-28 | Toyota Jidosha Kabushiki Kaisha | Automobile antenna system |
| US20030231138A1 (en) * | 2002-06-17 | 2003-12-18 | Weinstein Michael E. | Dual-band directional/omnidirectional antenna |
| CN1921220A (en) * | 2006-07-24 | 2007-02-28 | 北京邮电大学 | Microstrip paster antenna applied in TD-SCDMA terminal |
| CN101038984A (en) * | 2007-05-10 | 2007-09-19 | 北京航空航天大学 | Design for miniaturized GPS microstrip patch antenna |
| CN101060199A (en) * | 2007-05-10 | 2007-10-24 | 北京航空航天大学 | A design method for compact and lamination structure microstrip antenna integrated with the receiving and sending functions |
| CN102148428A (en) * | 2011-02-22 | 2011-08-10 | 中国电子科技集团公司第二十六研究所 | Miniature high-gain single-feed-point dual-band dual-polarized microstrip antenna |
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| CN202772257U (en) * | 2012-05-09 | 2013-03-06 | 中博信息技术研究院有限公司 | Dual-frequency antenna for human communication system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105470629A (en) * | 2015-12-31 | 2016-04-06 | 南京濠暻通讯科技有限公司 | Wearable annular dual-frequency button antenna |
| CN106375029A (en) * | 2016-11-19 | 2017-02-01 | 福州大学 | Current coupling type human body communication transceiver aided design system and method |
| CN106375029B (en) * | 2016-11-19 | 2019-01-18 | 福州大学 | A kind of current coupling type human body communication transceiver aided design system and method |
| CN109841951A (en) * | 2019-01-16 | 2019-06-04 | 北京科技大学 | SF single feed axial ratio bandwidth enhances circular polarization microstrip antenna |
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| Publication number | Publication date |
|---|---|
| CN103390791B (en) | 2016-03-30 |
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