CN105703075A - Near-field communication antenna - Google Patents
Near-field communication antenna Download PDFInfo
- Publication number
- CN105703075A CN105703075A CN201410682211.8A CN201410682211A CN105703075A CN 105703075 A CN105703075 A CN 105703075A CN 201410682211 A CN201410682211 A CN 201410682211A CN 105703075 A CN105703075 A CN 105703075A
- Authority
- CN
- China
- Prior art keywords
- radiation
- department
- field communication
- short
- plane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention relates to a near-field communication antenna. The near-field communication antenna is used for performing near-field communication. The near-field communication antenna includes a grounding part, radiation parts, short-circuit parts and a feed-in part; the grounding part is located at a first plane of a substrate; a plane where the radiation parts is located is parallel to the first plane; the radiation parts include a first radiation part and a second radiation part; one ends of each of short-circuit parts are connected with the grounding part, and the other ends of the short-circuit parts are connected with the radiation parts; the short-circuit parts are used for adjusting the resonance frequency of the near-field communication antenna so that the size of the near-field communication antenna can be decreased; the feed-in part is connected with the radiation parts and is used for feeding in electromagnetic wave signals; and a gap is formed between the first radiation part and the second radiation part, so that the intensity of an electric field in the area of the first radiation part and the second radiation part can be enhanced. The intensity of the near-field electric field of the near-field communication antenna is high, and the size of the antenna is small, and the antenna is suitable for the design of thin and small products.
Description
Technical field
The present invention relates to field of antenna, particularly relate to a kind of near-field communication aerial。
Background technology
The near field of indication refers to the electromagnetic field of (or wavelength magnitude) in the scope less than 1 wavelength in the field of communications。At present, micro-strip antenna (patchantenna) is generally made up of the radiant body being combined within product casing, reflecting plate and terminal, the near field electric field intensity of its radiant body is neither high, the wireless identification of near-field communication cannot be applied to, and the antenna resonance length of general micro-strip antenna is more than the half of aerial signal wavelength, volume shared by antenna is also relatively big, is unfavorable for being applied in compact communication products。
Summary of the invention
In view of this, it is necessary to provide a kind of near-field communication aerial, to improve the near field electric field intensity of antenna and to reduce the volume of antenna further。
A kind of near-field communication aerial that embodiment of the present invention provides, is used for carrying out near-field communication, and this near-field communication aerial includes grounding parts, Department of Radiation, short and feeding portion。Wherein, grounding parts is positioned at the first plane of substrate；Department of Radiation place plane is parallel with the first plane, and Department of Radiation includes the first Department of Radiation and the second Department of Radiation；One end of short connects grounding parts, and the other end connects Department of Radiation, is used for the resonant frequency regulating near-field communication aerial to reduce the size of near-field communication aerial；Feeding portion is connected to Department of Radiation, for feed-in electromagnetic wave signal；Gap is formed, to strengthen the first Department of Radiation and the intensity of the second Department of Radiation region internal electric field between first Department of Radiation and the second Department of Radiation。
Preferably, short includes at least one first short and at least one the second short, wherein the first end of the first short connects the first Department of Radiation, and the second end connects grounding parts, is used for the resonant frequency regulating near-field communication aerial to reduce the size of near-field communication aerial；First end of the second short connects the second Department of Radiation, and the second end connects grounding parts, is used for the resonant frequency regulating near-field communication aerial to reduce the size of near-field communication aerial。
Preferably, the first short and the second short are all in square block。
Preferably, the first short and the second short are all connected with grounding parts by perforation。
Preferably, the first end of the first short and the edge of the first Department of Radiation connect, and the first end of the second short and the edge of the second Department of Radiation connect。
Preferably, the first Department of Radiation and the second Department of Radiation are all elongated。
Preferably, the intensity of electric field, equal to the business of the voltage formed between the first Department of Radiation and the second Department of Radiation Yu gap width。
Preferably, feeding portion is column。
Preferably, the midpoint at feeding portion and the first Department of Radiation edge connects。
Preferably, feeding portion is also connected with the second plane of substrate, and the second plane is parallel with the first plane of substrate, and the second plane is between the plane at the first plane and the first Department of Radiation place。
The near field electric field intensity of near-field communication aerial of the present invention is relatively strong, and its antenna volume is also less, it is adaptable in compact product design。
Accompanying drawing explanation
Fig. 1 is the perspective view of near-field communication aerial the first embodiment of the present invention。
Fig. 2 is the STRUCTURE DECOMPOSITION schematic diagram of near-field communication aerial the first embodiment of the present invention。
Fig. 3 is the perspective view of near-field communication aerial the second embodiment of the present invention。
Fig. 4 is the STRUCTURE DECOMPOSITION schematic diagram of near-field communication aerial the second embodiment of the present invention。
Fig. 5 is the return loss measurement figure of near-field communication aerial of the present invention。
Fig. 6 is the electric field intensity measuremenrt figure of near-field communication aerial of the present invention。
Main element symbol description
Grounding parts G
Substrate L1
First plane L11
Second plane L12
Plane L2
First short Sa1, Sa2
Second short Sb1, Sb2
Feeding portion I
First Department of Radiation R1
Second Department of Radiation R2
Gap gap
Width d
Connect width w
Following detailed description of the invention will further illustrate the present invention in conjunction with above-mentioned accompanying drawing。
Detailed description of the invention
Seeing also the perspective view that Fig. 1 and Fig. 2, Fig. 1 are near-field communication aerial the first embodiment of the present invention, Fig. 2 is the STRUCTURE DECOMPOSITION schematic diagram of near-field communication aerial the first embodiment of the present invention。
The near-field communication aerial of present invention design, is used for carrying out near-field communication, and this near-field communication aerial includes Department of Radiation, grounding parts G, short and feeding portion I。
Wherein, Department of Radiation includes the first Department of Radiation R1 and the second Department of Radiation R2。Grounding parts G is positioned on the first plane L11 of substrate L1, and Department of Radiation is positioned on the plane L2 parallel with the first plane L11, and namely the first Department of Radiation R1 and the second Department of Radiation R2 is all positioned on the plane L2 parallel with the first plane L11。And first form gap gap between Department of Radiation R1 and the second Department of Radiation R2, to strengthen the electric field intensity in the first Department of Radiation R1 and the second Department of Radiation R2 region。In the present embodiment, as it is shown in figure 1, the first Department of Radiation R1 and the second Department of Radiation R2 is all elongated, the first Department of Radiation R1 and the second Department of Radiation R2 is centrosymmetric about gap gap, namely two rectangular long limits are parallel to each other, and two rectangular minor faces are concordant mutually。
The above-mentioned mode arranging the first Department of Radiation R1 and the second Department of Radiation R2, can make to be formed in the gap of gap capacitively coupled electric field。At the intensity E of the first Department of Radiation R1 and the second Department of Radiation R2 region internal electric field, equal to the business of the voltage V formed between the first Department of Radiation R1 and the second Department of Radiation R2 Yu the width d of gap gap。I.e. E=V/d。Therefore, according to design requirement, when voltage V is basically unchanged, the width d adjusting gap gap can obtain corresponding electric field intensity E。
Substrate L1 also includes the second plane L12, and this second plane L12 and the first plane L11 is relatively arranged on substrate L1, and the second plane L12 is between the plane L2 at the first plane L11 and the first Department of Radiation R1 place。In the present embodiment, first plane L11 and the second plane L12 is all the place plane on two surfaces in substrate L1, in other embodiments, when being multi-layer sheet such as substrate L1, first plane L11 and the second plane L12 can also be the place plane of certain layer in substrate L1, does not limit at this。
One end of short is connected with grounding parts G, and the other end is connected with Department of Radiation。Short is used for the resonant frequency regulating near-field communication aerial to reduce the size of near-field communication aerial。Short includes at least one first short Sa and at least one second short Sb。
In the present embodiment, short includes an a first short Sa and second short Sb。Wherein, the first short Sa and the second short Sb is all in square block, and first end of the first short Sa connects the first Department of Radiation R1, and the second end is connected with grounding parts G；First end of the second short Sb connects the second Department of Radiation R2, and the second end is connected with grounding parts G。First short Sa and the second short Sb all can arrive the first plane L11 by the second plane L12 of the mode traverse substrate L1 of perforation, thus being connected with grounding parts G。First end of the first short Sa and the edge of the first Department of Radiation R1 connect, and first end of the second short Sb and the edge of the second Department of Radiation R2 connect。Short links together each Department of Radiation and grounding parts G so that the resonant length of near-field communication aerial is less than the half of aerial signal wavelength, thus reducing the volume of this near-field communication aerial。And adjust short with
In other embodiments, short can include any number of first short Sa and any number of second short Sb。First short Sa and the second short Sb can also pass through other connected modes and be connected with grounding parts G, as by other connected modes such as wire connections。
Feeding portion I is connected with Department of Radiation, for feed-in electromagnetic wave signal。In the present embodiment, the midpoint at feeding portion I and the first Department of Radiation R1 edge connects, and feeding portion I is also connected with the second plane L12 of substrate, and namely feeding portion I and grounding parts G separates with substrate L1。Feeding portion I is column。
Seeing also the perspective view that Fig. 3 and Fig. 4, Fig. 3 are near-field communication aerial the second embodiment of the present invention, Fig. 4 is the STRUCTURE DECOMPOSITION schematic diagram of near-field communication aerial the second embodiment of the present invention。
Except the described antenna structure including the first embodiment, the antenna structure of the second embodiment is also provided with multiple first short Sa and the second short Sb, namely short includes multiple first short Sa and the second short Sb, its connected mode is roughly the same with the connected mode described in the first embodiment, and narration is not repeated at this。
Fig. 5 is the return loss measurement figure of near-field communication aerial of the present invention。Curve a, curve b in Fig. 5 and curve c represent that, when the connection width w of the first short Sa and the first Department of Radiation R1 is 4.5 millimeters, 5.5 millimeters and 6.5 millimeters, the return loss of near-field communication aerial measures figure respectively。As shown in Figure 5, when the first short Sa is designed to different connection width w, the performance of near-field communication aerial is had different effects by the first short Sa, therefore in the design process, suitably adjusts and connects width w, it is possible to design the near-field communication aerial of different performance。
Fig. 6 is the electric field intensity measuremenrt figure of near-field communication aerial of the present invention。Curve in Fig. 6 is it is known that when range near-field communication center of antenna is more near, the intensity of electric field intensity is more high。When range near-field communication center of antenna 20 millimeters, its electric field intensity is up to about 450 volt per metres, and under equal conditions, and the electric field intensity of general micro-strip antenna about 300 volt per metre。Under equal conditions, the near-field communication aerial of the present invention wants height compared to the near field electric field intensity of general micro-strip antenna。
The near field electric field intensity of near-field communication aerial of the present invention is relatively strong, and its antenna volume is also less, it is adaptable in compact product design。
Claims (10)
1. a near-field communication aerial, is used for carrying out near-field communication, it is characterised in that including:
Grounding parts, is positioned at the first plane of substrate；
Department of Radiation, described Department of Radiation place plane is parallel with described first plane, and described Department of Radiation includes the first Department of Radiation and the second Department of Radiation；
Short, one end connects described grounding parts, and the other end connects described Department of Radiation, is used for the resonant frequency regulating described near-field communication aerial to reduce the size of described near-field communication aerial；And
Feeding portion, is connected to described Department of Radiation, for feed-in electromagnetic wave signal；
Wherein, gap is formed between described first Department of Radiation and described second Department of Radiation, to strengthen described first Department of Radiation and the intensity of described second Department of Radiation region internal electric field。
2. near-field communication aerial as claimed in claim 1, it is characterised in that described short includes:
At least one first short, the first end connects described first Department of Radiation, and the second end connects described grounding parts；And
At least one second short, the first end connects described second Department of Radiation, and the second end connects described grounding parts。
3. near-field communication aerial as claimed in claim 2, it is characterised in that described first short and described second short are all in square block。
4. near-field communication aerial as claimed in claim 2, it is characterised in that described first short and described second short are all connected with described grounding parts by perforation。
5. near-field communication aerial as claimed in claim 2, it is characterised in that the first end of described first short is connected with the edge of described first Department of Radiation, and the first end of described second short is connected with the edge of described second Department of Radiation。
6. near-field communication aerial as claimed in claim 1, it is characterised in that described first Department of Radiation and described second Department of Radiation are all rectangle, and two rectangular long limits are parallel to each other, and two rectangular minor faces are concordant mutually。
7. near-field communication aerial as claimed in claim 1, it is characterised in that the intensity of described electric field is equal to the business of the voltage formed between described first Department of Radiation and described second Department of Radiation with described gap width。
8. near-field communication aerial as claimed in claim 1, it is characterised in that described feeding portion is column。
9. near-field communication aerial as claimed in claim 1, it is characterised in that described feeding portion is connected with the midpoint at described first Department of Radiation edge。
10. near-field communication aerial as claimed in claim 1, it is characterized in that, described feeding portion is also connected with the second plane of substrate, and described second plane is parallel with the first plane of substrate, and described second plane is between the plane at described first plane and described first Department of Radiation place。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410682211.8A CN105703075A (en) | 2014-11-24 | 2014-11-24 | Near-field communication antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410682211.8A CN105703075A (en) | 2014-11-24 | 2014-11-24 | Near-field communication antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105703075A true CN105703075A (en) | 2016-06-22 |
Family
ID=56941350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410682211.8A Pending CN105703075A (en) | 2014-11-24 | 2014-11-24 | Near-field communication antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105703075A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001028035A1 (en) * | 1999-10-12 | 2001-04-19 | Arc Wireless Solutions, Inc. | Compact dual narrow band microstrip antenna |
| EP1507313A2 (en) * | 2003-08-14 | 2005-02-16 | Nec Corporation | Antenna device for portable terminal |
| CN1890839A (en) * | 2003-10-16 | 2007-01-03 | 韩国电子通信研究院 | Planar inverted f antenna tapered type PIFA with corrugation |
| US20070115177A1 (en) * | 2003-12-02 | 2007-05-24 | Kazunari Kawahata | Antenna structure and communication apparatus including the same |
| CN201766162U (en) * | 2009-12-31 | 2011-03-16 | 天津工程师范学院 | Plane inverted F-shaped antenna |
| CN102195142A (en) * | 2010-03-17 | 2011-09-21 | 西门子公司 | Planar antenna system |
-
2014
- 2014-11-24 CN CN201410682211.8A patent/CN105703075A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001028035A1 (en) * | 1999-10-12 | 2001-04-19 | Arc Wireless Solutions, Inc. | Compact dual narrow band microstrip antenna |
| EP1507313A2 (en) * | 2003-08-14 | 2005-02-16 | Nec Corporation | Antenna device for portable terminal |
| EP1507313A3 (en) * | 2003-08-14 | 2005-12-21 | Nec Corporation | Antenna device for portable terminal |
| CN1890839A (en) * | 2003-10-16 | 2007-01-03 | 韩国电子通信研究院 | Planar inverted f antenna tapered type PIFA with corrugation |
| US20070115177A1 (en) * | 2003-12-02 | 2007-05-24 | Kazunari Kawahata | Antenna structure and communication apparatus including the same |
| CN201766162U (en) * | 2009-12-31 | 2011-03-16 | 天津工程师范学院 | Plane inverted F-shaped antenna |
| CN102195142A (en) * | 2010-03-17 | 2011-09-21 | 西门子公司 | Planar antenna system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9673532B2 (en) | Antenna | |
| TWI555272B (en) | Multi-band antenna | |
| US8310398B2 (en) | Dual-band planar micro-strip antenna | |
| US20130162496A1 (en) | Multi-antenna device and communication apparatus | |
| TWI617083B (en) | Antenna structure and wireless communication device using same | |
| US10498032B2 (en) | Antenna component and electronic device | |
| CN106099363B (en) | A kind of broadband line source for plane CTS antennas | |
| WO2015151430A1 (en) | Antenna, array antenna and wireless communication device | |
| CN204011730U (en) | A kind of broadband rectangular microstrip array antenna | |
| CN101436702A (en) | Waveguide-microstrip line transformation and power divider | |
| US20160190700A1 (en) | Dualband antenna with isolation enhanced and method thereof | |
| CN109768372A (en) | A kind of string and combination fed microstrip array antenna applied to millimetre-wave radar | |
| US9817105B2 (en) | Stacked waveguide substrate, radio communication module, and radar system | |
| CN102780071A (en) | Three-dimensional antenna | |
| TW201216561A (en) | A dual-wideband mobile communication device | |
| TWI683474B (en) | Tree-dimensional antenna element | |
| CN105703075A (en) | Near-field communication antenna | |
| CN105098307A (en) | Microwave load pull fundamental wave and harmonic wave two-in-one tuner with high reflection coefficient | |
| US20170201021A1 (en) | Broadband antenna | |
| JP6393048B2 (en) | Multiband antenna | |
| TWI658646B (en) | Antenna device | |
| JP6013577B1 (en) | converter | |
| CN104681942A (en) | Ultra-broadband antenna with notched characteristic | |
| KR101724215B1 (en) | Traveling wave antenna with rectangular waveguide feeding structure | |
| CN104282978B (en) | Antenna and set top box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180226 Address after: 201613 Shanghai city south of Songjiang Export Processing Zone Road No. 1925 Applicant after: Ambit Microsystems (Shanghai) Co., Ltd. Address before: 201613 Shanghai City, Songjiang District Songjiang Export Processing Zone South Road No. 1925 Applicant before: Ambit Microsystems (Shanghai) Co., Ltd. Applicant before: Hon Hai Precision Industry Co., Ltd. |
|
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160622 |