CN205069861U - It can integrate in dual -frenquency button antenna of clothing to be applied to body area network communication - Google Patents
It can integrate in dual -frenquency button antenna of clothing to be applied to body area network communication Download PDFInfo
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- CN205069861U CN205069861U CN201520780466.8U CN201520780466U CN205069861U CN 205069861 U CN205069861 U CN 205069861U CN 201520780466 U CN201520780466 U CN 201520780466U CN 205069861 U CN205069861 U CN 205069861U
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- support seat
- minor matters
- metallic support
- microstrip minor
- button
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Abstract
The utility model discloses an it can integrate in dual -frenquency button antenna of clothing to be applied to body area network communication, including feed part, metal -support seat and irradiator, the metal -support seat is fixed on the clothing, the irradiator constitutes the body of buckleing of button, the metal -support seat passes through the feed part and is connected with the irradiator, the irradiator includes the medium base plate, the upper surface of medium base plate includes that the annular microstrip minor matters that the one end short circuit other end was opened a way reach the rectangle microstrip minor matters of being connected with annular microstrip minor matters inner ring, the short circuit of the rectangle microstrip minor matters other end, rectangle microstrip minor matters are located medium base plate center, the lower surface of medium base plate includes a ring, ring and metal -support seat physical contact. The utility model discloses fuse together with the clothing button, have the robustness at the surperficial during operation of human body, be applicable to body surface and external class of body area network communication scene and wearable wireless electronics equipment.
Description
Technical field
The utility model relates to the antenna in wearable wireless mobile communications field, and particularly a kind of body area network communication accessible site that is applied to is in the double frequency button antenna of clothing.
Background technology
Along with the deep progress of body area network research, and the development of Information technology, in order to meet the demand of the aspects such as Social Individual medical treatment, amusement, military affairs, security, Wearable device obtained universal on a large scale in recent years.Wearable device volume is little, mostly needs to be integrated in the clothing of people or dresses on accessory (as wrist-watch, bracelet, glasses etc.), carrying out data exchange essentially by the mode of less radio-frequency.And antenna is the important component part of radio-frequency front-end, due to the effect of tissue, the design of human body antenna encounters very large challenge, need to consider the following aspects: one is the limited space taken, two is tissue impacts on antenna performance, the robustness of guarantor's body antenna work, three is that the different performance of communication scenes to antenna of body area network has different requirements, and four is tissue restrictions to the specific absorption rate of antennas irradiate electromagnetic wave energy.
And the design alternative of most people body antenna now is directly integrated on fabric, using fabric as medium substrate, due to the effect of human body and the fold effect of fabric, the performance of these human body antenna is greatly affected, job insecurity, easy generation resonance frequency deviation and mismatch, antenna pattern there occurs very large change.Seldom there is the design combined together by the metal parts (as button, slide fastener etc.) of human body antenna and clothing itself present stage, Britain has researcher to propose button to use as antenna, the scheme of what but it adopted is monopole, overall dimensions is larger, and what adopt is flexible fabric floor, easily be subject to the impact of human body environment, and the fold effect that fabric is not discussed is on the impact of floor and antenna performance.
On the other hand, Antenna Design is seldom had to consider the combination of body area network body surface and external two kinds of communication scenes.For body surface communication, antenna should adopt the mode of perpendicular polarization to produce the Creeping Wave propagated along human body surface, reduces the impact of human body decline, and preferably adopts the pattern of omnidirectional radiation under this situation; Then should reduce the coupling of aerial radiation and tissue for external communication, preferably adopt Directed radiation modes to produce relatively high gain.
And owing to being operated in human body surface, the design of human body antenna must consider the specific absorption rate of human body to antennas irradiate electromagnetic wave energy, ensure electromagnetic radiation safety, this also proposes strict requirement to the design of human body antenna.
Utility model content
In order to overcome the shortcoming of prior art existence with not enough, the utility model provides a kind of body area network communication accessible site that is applied in the double frequency button antenna of clothing.
This utility model is by human body antenna and general clothes button Combined design, achieve the miniaturization of human body wearable antenna and low section, and produce the working frequency range that two have different radiation mode, the supporting seat of hard has effectively resisted the performance degradations that fabric antenna fold effect is brought, when human body surface works, there is robustness, and floor panel structure effectively reduces the specific absorption rate of human body to energy of electromagnetic field, be applicable to body surface and body area network communication scenes and the wearable radio-based electronic devices such as external.
The utility model adopts following technical scheme:
A kind of body area network communication accessible site that is applied to is in the double frequency button antenna of clothing, comprise feed part, metallic support seat and radiant body, described metallic support seat is fixed on clothing, described radiant body forms the button of button, described metallic support seat is connected with radiant body by feed part, described radiant body comprises medium substrate, the upper surface of described medium substrate comprises the ring shaped microstrip minor matters that the short at one end other end is opened a way and the rectangular microstrip minor matters be connected with ring shaped microstrip minor matters inner ring, the short circuit of the described rectangular microstrip minor matters other end, described rectangular microstrip minor matters are positioned at medium substrate center,
The lower surface of described medium substrate comprises an annulus, described annulus and metallic support seat physical contact.
Rectangular microstrip minor matters left hand edge and the acting in conjunction of ring shaped microstrip minor matters left arm inward flange metallic support seat lower floor produce and are a kind ofly applied to the omni directional radiation pattern of body surface communication polarised direction perpendicular to human body surface, and rectangular microstrip minor matters and ring shaped microstrip minor matters two ends inward flange and floor acting in conjunction on metallic support seat also produce and be a kind ofly applied to the external Directed radiation modes of greatest irradiation in human body normal orientation that communicate.
The arm of described ring shaped microstrip minor matters is wide to be increased along short-circuit end gradually to open end.
Described feed part adopts coaxial feed, and described metallic support seat has through hole, and the inner wire of coaxial feed connects rectangular microstrip minor matters by the through hole of medium substrate, and outer conductor is connected with metallic support seat.
Described metallic support seat is I-shaped support seat, and is rigid conductive, and described metallic support seat comprises upper and lower floor.
Described metallic support seat is symmetrical or unsymmetric structure, and described symmetrical structure is specially through hole and is positioned at metallic support seat center, and described unsymmetric structure is that through hole is positioned at non-central location, and when being positioned at non-central location, SAR value reduces.
The beneficial effects of the utility model:
(1) utilize the original metal parts of clothing to realize human body fabric antenna, Antenna Design and clothes button combine together, can reduce to utilize cloth to realize the manufacture difficulty of human body fabric antenna mode, increase wearable antenna and the integrated feasibility of clothing;
(2) button Antenna Operation is in ISM2.45GHz and 5.8GHz two frequency ranges, has different antenna patterns and polarization mode at different frequency range, take into account the combination of body area network body surface and external two kinds of communication scenes.What radiant body two minor matters and the acting in conjunction of metallic support seat produced a kind of 2.45GHz of working in frequency range is applied to the omni directional radiation pattern that body surface communicates, its polarised direction is perpendicular to human body surface, effectively cover human body surface region, reduce the impact of human body decline, create the Directed radiation modes being applied to external communication that another works in 5.8GHz frequency range simultaneously, its greatest irradiation, in human body normal orientation, effectively reduces the coupling with tissue;
(3) I shape metallic support seat is rigid conductive, overcome the fold effect of general fabrics antenna, ensure that the robustness of antenna in human body surface work, be not subject to the impact of tissue on antenna performance, under human body environment, maintain comparatively stable impedance matching bandwidth sum antenna pattern;
(4) hard I-shaped support seat can be symmetrical, also can be asymmetric, and asymmetric structure can reduce the specific absorption rate of human body to electromagnetic wave energy further;
(5) PIFA structure is applied to the design of button antenna, compared with the design being applied to this scene with traditional monopole subscheme, size has tapered to quarter-wave by 1/2nd wavelength, and make the button antenna size being applied to body area network communication less, section is lower.
Accompanying drawing explanation
Fig. 1 is the integrated structural representation with clothing of the utility model embodiment 1;
Fig. 2 is the schematic diagram of the utility model embodiment 1,
Fig. 3 (a) and Fig. 3 (b) is upper surface and the lower surface configuration schematic diagram of the radiant body of the utility model embodiment 1 respectively;
Fig. 4 (a) and Fig. 4 (b) is that the master of the metallic support seat of the utility model embodiment 1 looks and plan structure schematic diagram respectively;
Fig. 5 is the S11-frequency the simulation results figure of the utility model embodiment 1;
Fig. 6 (a) is the normalization antenna pattern of the utility model embodiment 1 at the 2.45GHz of phi=0 °, and Fig. 6 (b) is the normalization antenna pattern of the utility model embodiment 1 at the 2.45GHz of phi=90 °;
Fig. 7 (a) is the normalization antenna pattern of the utility model embodiment 1 at the 5.8GHz of phi=0 °;
Fig. 7 (b) is the normalization antenna pattern of the utility model embodiment 1 at the 5.8GHz of phi=90 °;
Fig. 8 is the structural representation of the utility model button antenna embodiment 2;
Fig. 9 (a) is the utility model embodiment 2 antenna pattern of Phi=0 ° under 2.45GHz;
Fig. 9 (b) is the utility model embodiment 2 antenna pattern of Phi=90 ° under 2.45GHz;
Fig. 9 (c) to be the utility model embodiment 2 be antenna pattern of Phi=0 ° under 5.8GHz;
Fig. 9 (d) is the utility model embodiment 2 antenna pattern of Phi=90 ° under 5.8GHz;
Figure 10 is the schematic diagram of the utility model button antenna embodiment 3;
Figure 11 is the S11-frequency the simulation results figure of the utility model button antenna embodiment 3.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.
Embodiment 1
A kind of body area network communication accessible site that is applied to of the present embodiment is in the double frequency button antenna of clothing, as shown in Figure 1, specifically be integrated in the position on edge on Jean short trousers slide fastener, act as the function of button originally, simultaneously also as the Anneta module of body area network radio communication, two button antenna 12 and clothes button are melted in order to one, can reduce to utilize cloth to realize the manufacture difficulty of human body fabric antenna mode, increase wearable antenna and the integrated feasibility of clothing.In addition, the utility model can also be integrated in position, shirt front, and can combine together with the overcoat of band button, and does not affect clothing outward appearance function originally.
As shown in Figure 2, the utility model is made up of feed part 1, metallic support seat 2 and radiant body 3, and whole height is suitable with clothes button, and button height 4mm-10mm, section is low.Metallic support seat 2 is for fixing with clothing, radiant body 3 forms the button of button, as shown in Fig. 3 (a) and Fig. 3 (b), radiant body 3 adopts certain thickness FR4 as medium substrate, the rectangular microstrip minor matters 5 of the ring shaped microstrip minor matters 4 that its upper surface is opened a way by peripheral short at one end one end and short at one end one end connecting ring shaped microstrip minor matters are formed, described rectangular microstrip minor matters 5 are positioned at the center of medium substrate, and wherein the arm of ring shaped microstrip minor matters 4 is wide increases along short-circuit end gradually to open end;
Its lower surface comprises an annulus, described annulus and metallic support seat physical contact, and described upper and lower surface is connected with two metallization via hole (9,10) of rectangular microstrip minor matters short-circuit end by ring shaped microstrip minor matters.
As shown in Fig. 4 (a) and Fig. 4 (b), metallic support seat is specially I shape rigid support seat, and described metal material adopts aluminium alloy, and centre has through hole, diameter d
4, feed part to radiant body, realizes coaxial feed by this through hole feed.I shape metallic support seat comprises upper and lower floor, and in the present embodiment, upper and lower floor is circle, and wherein Shangdi board diameter is d
5, lower floor diameter is d
6lower floor diameter is less than 36mm, rectangular microstrip minor matters left hand edge 6 and ring shaped microstrip minor matters left arm inward flange 7 and lower floor 22 acting in conjunction of metallic support seat produce a kind of body surface that is applied to and to communicate the omni directional radiation pattern of polarised direction perpendicular to human body surface, effectively cover human body surface region, reduce the impact of human body decline.Ring shaped microstrip minor matters left arm and right arm inward flange (7,8) are positioned at the both sides of rectangular microstrip minor matters, described rectangular microstrip minor matters and ring shaped microstrip minor matters two ends inward flange (7,8) also create another with upper floor 21 acting in conjunction of metallic support seat and are applied to the external Directed radiation modes of greatest irradiation in human body normal orientation that communicate, and effectively reduce the coupling with tissue;
Described medium substrate center has circular hole 11, and the inner wire of feed part connects radiant body rectangular microstrip minor matters 5 by circular hole 11, and outer conductor is connected with supporting seat, Filled Dielectrics supporting seat through hole.
I-shaped support seat is rigid conductive, overcome the fold effect of general fabrics antenna, ensure that the robustness of antenna performance when human body surface works, be not subject to the impact of tissue on antenna performance, comparatively stable impedance matching bandwidth sum antenna pattern is maintained under human body environment, the impact of tissue is limited, and this is that the practical application of button antenna is laid a good foundation.With reference to Fig. 5, the result of the utility model embodiment 1 simulate and test is comparatively identical, and test result has frequency deviation, and this may be caused by concrete mismachining tolerance and sheet material relative dielectric constant error.In addition owing to have employed FR4 sheet material, can become at the loss tangent angle of high band and result in greatly high band impedance matching and there is no ideal simulation.
Consult Fig. 6 (a) and Fig. 6 (b), the lower surface floor of radiant body and I-shaped support seat produces low-frequency resonant point, forms the omnidirectional radiation directional diagram of greatest irradiation direction along human body surface, and G
thetaoccupy main status, than G
philarge more than 10dB, therefore this omnidirectional radiation directional diagram is along human body surface perpendicular polarization, this effectively covers human body surface region, reduces the impact of human body decline, is applicable to the scene of body area network body surface communication.
Consult Fig. 7 (a) and Fig. 7 (b), the upper surface floor of radiant body and I-shaped support seat produces high-frequency resonant point, form the directed radiation directional diagram of greatest irradiation direction along human body normal direction, also be now the polarization mode of linear polarization, be applicable to the scene of the external communication of body area network.
Embodiment 2
As Fig. 8, the specific embodiment 2 of the utility model button antenna is compared with specific embodiment 1, make following change, I shape metallic support seat lower floor diameter becomes large, and employing dissymmetrical structure, feed part and metallic support seat tie point distance lower floor center offset by certain distance toward the right.Radiant body adopts Rogers 4003 sheet material (RO4003) that performance is more stable in addition, but the constant design parameter of radiant body overall structure needs fine setting optimization.
At the antenna pattern of manikin and free space to such as Fig. 9 (a), Fig. 9 (b), Fig. 9 (c) and Fig. 9 (d), visible in the actual working environment of tissue, the effect of human body makes the antenna pattern of button antenna there occurs change, and the absorption of tissue makes antenna pattern back lobe reduce.Be better than absorption in low-frequency range human body reflex, make radiation gain slightly increase about 1dB, be weaker than absorption in high band human body reflex, make radiation gain decline about 2dB slightly.But the simulation result on manikin shows, button antenna can't change polarised direction in actual applications, maintain in the characteristic of low-frequency range omnidirectional radiation and the characteristic at high band directed radiation, this illustrates that the robustness of the utility model button antenna obtains checking simultaneously.
Embodiment 3
Have employed Rogers's sheet material, on I shape hard metal supporting seat, same employing is biased dissymmetrical structure, and whole button antenna height reduces to some extent, and section is lower, and conveniently test changing feed structure simultaneously.Simultaneously under reduction actual conditions, human body is to the absorptivity SAR value of electromagnetic wave energy, the radius of supporting seat lower floor increases to some extent, with reference to Figure 10.With reference to Figure 11, specific embodiment 3 the simulation results illustrates that reflection coefficient is very identical, demonstrates the feasibility of button antenna.With reference to form 1, specific embodiment 3, when manikin works, emulates the standard that the maximum specific absorption rate SAR value obtained all meets the U.S. and European Union under two resonance frequencies, demonstrates the practicality of button antenna.
Table 1
Above-described embodiment is the utility model preferably execution mode; but execution mode of the present utility model is not limited by the examples; change, the modification done under other any does not deviate from Spirit Essence of the present utility model and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection range of the present utility model.
Claims (5)
1. one kind is applied to body area network communication accessible site in the double frequency button antenna of clothing, it is characterized in that, comprise feed part, metallic support seat and radiant body, described metallic support seat is fixed on clothing, described radiant body forms the button of button, described metallic support seat is connected with radiant body by feed part, described radiant body comprises medium substrate, the upper surface of described medium substrate comprises the ring shaped microstrip minor matters that the short at one end other end is opened a way and the rectangular microstrip minor matters be connected with ring shaped microstrip minor matters inner ring, the short circuit of the described rectangular microstrip minor matters other end, described rectangular microstrip minor matters are positioned at medium substrate center,
The lower surface of described medium substrate comprises an annulus, described annulus and metallic support seat physical contact.
2. double frequency button antenna according to claim 1, is characterized in that, described metallic support seat is I-shaped support seat, and is rigid conductive, and described metallic support seat comprises upper and lower floor.
3. double frequency button antenna according to claim 1, it is characterized in that, described metallic support seat has through hole, described metallic support seat is symmetrical or unsymmetric structure, described symmetrical structure is specially through hole and is positioned at metallic support seat center, and described unsymmetric structure is that through hole is positioned at non-central location.
4. double frequency button antenna according to claim 1, is characterized in that, the arm of described ring shaped microstrip minor matters is wide to be increased along short-circuit end gradually to open end.
5. double frequency button antenna according to claim 3, it is characterized in that, feed part adopts coaxial feed, and the inner wire of coaxial feed connects rectangular microstrip minor matters by the through hole of medium substrate, and outer conductor is connected with metallic support seat by the through hole of metallic support seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520780466.8U CN205069861U (en) | 2015-10-08 | 2015-10-08 | It can integrate in dual -frenquency button antenna of clothing to be applied to body area network communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520780466.8U CN205069861U (en) | 2015-10-08 | 2015-10-08 | It can integrate in dual -frenquency button antenna of clothing to be applied to body area network communication |
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| Publication Number | Publication Date |
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| CN205069861U true CN205069861U (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520780466.8U Expired - Fee Related CN205069861U (en) | 2015-10-08 | 2015-10-08 | It can integrate in dual -frenquency button antenna of clothing to be applied to body area network communication |
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| CN (1) | CN205069861U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106374217A (en) * | 2016-11-15 | 2017-02-01 | 中国人民解放军国防科学技术大学 | Zipper antenna for wearable wireless system |
| CN109904602A (en) * | 2019-03-11 | 2019-06-18 | 南京信息工程大学 | A kind of dual-band dual-mode wireless body area network antenna |
-
2015
- 2015-10-08 CN CN201520780466.8U patent/CN205069861U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106374217A (en) * | 2016-11-15 | 2017-02-01 | 中国人民解放军国防科学技术大学 | Zipper antenna for wearable wireless system |
| CN106374217B (en) * | 2016-11-15 | 2023-09-22 | 中国人民解放军国防科学技术大学 | Zipper antenna for wearable wireless system |
| CN109904602A (en) * | 2019-03-11 | 2019-06-18 | 南京信息工程大学 | A kind of dual-band dual-mode wireless body area network antenna |
| CN109904602B (en) * | 2019-03-11 | 2024-02-06 | 南京信息工程大学 | Dual-band dual-mode wireless body area network antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160302 Termination date: 20181008 |
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| CF01 | Termination of patent right due to non-payment of annual fee |