CN101984520B - Bluetooth antenna structure and portable wireless communications device with same - Google Patents
Bluetooth antenna structure and portable wireless communications device with same Download PDFInfo
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- CN101984520B CN101984520B CN201010518831XA CN201010518831A CN101984520B CN 101984520 B CN101984520 B CN 101984520B CN 201010518831X A CN201010518831X A CN 201010518831XA CN 201010518831 A CN201010518831 A CN 201010518831A CN 101984520 B CN101984520 B CN 101984520B
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Abstract
The invention discloses a bluetooth antenna structure and a portable wireless communications device with same. The bluetooth antenna structure comprises an electric field type antenna emitter, a magnetic field type antenna emitter and a common feed-in end, wherein the electric field type antenna emitter is set to be a quarter-wavelength monopole antennas; and the magnetic field type antenna emitter is set to be a quarter-wavelength slot antenna. As the hybrid antenna combining the monopole antennas and the slot antenna which commonly use the same feed-in end is adopted, the common feed-in end is used to realize the combined operation of the electric field type antenna emitter and the magnetic field type antenna emitter and the miniaturization of the portable wireless communications device can be realized; and the combined receiving of the electric field and the magnetic field is adopted to broaden the operation bandwidth of the bluetooth antenna and improve the receiving performance of the electric field and the magnetic field, thus the receiving performance of the bluetooth antenna of the portable wireless terminal can be improved under the complicated environment and the negative effect on the performance of the bluetooth antenna caused by holding the portable wireless terminal in hand can also be reduced.
Description
Technical field
The present invention relates to the portable wireless field of antenna, in particular, what improvement related to is a kind of Bluetooth antenna and portable radio communication device thereof.
Background technology
Along with developing rapidly of wireless communication technique, portable radio communication device becomes an indispensable part in the modern life.Bluetooth is the technology of a kind of low cost, low-power and short-distance wireless communication, can be applied on portable radio communication device widely.Antenna is in wireless telecommunication system, to be used for transmitting and the important important component that receives electromagnetic wave energy.
Due to current technology there is no method by aerial integration to the chip of manufacture of semiconductor, therefore in bluetooth module except the System on Chip/SoC of core, antenna is that another has the critical components that affects the bluetooth module transmission characteristic.
But, in the process of portable radio communication device design, modern trend has produced the demand of contradiction, on the one hand, portable radio communication device is wanted compatible more and more communication scheme, and the consumer is interested in the less device with built-in aerial; On the other hand, need again to realize enough antenna electrical performance, the more effective RF energy that transmits and receives; And its performance can not occur that because of environment for use signal worsens, for example, the negative effect that during hand-held the use, human body causes antenna performance.
Therefore, prior art still haves much room for improvement and develops.
Summary of the invention
The object of the invention is to, a kind of Bluetooth antenna structure and portable radio communication device thereof are provided, can expand the bandwidth of operation of Bluetooth antenna, improve the bluetooth receptivity of portable radio terminal under complex environment, the negative effect while reducing hand-held the use, antenna performance caused.
Technical scheme of the present invention is as follows:
A kind of Bluetooth antenna structure, wherein, comprise an electric field type antenna transmission body, a field type antenna transmission body and common feed side, electric field type antenna transmission body is set to quarter-wave monopole antenna, field type antenna transmission body is set to quarter-wave slot antenna, monopole antenna and slot antenna all are arranged on the same face of printed circuit board (PCB), be provided with gap between monopole antenna and printed circuit board (PCB) Fu Tong district, slot antenna is connected with printed circuit board (PCB) Fu Tong district; Adjust the resonance frequency of electric field type antenna transmission body and field type antenna transmission body, make the center frequency point of the resonance frequency of an emitter wherein higher than the bluetooth operating frequency, the resonance frequency of another emitter is lower than the center frequency point of bluetooth operating frequency.
Described Bluetooth antenna structure, wherein: the shape of monopole antenna is set to serpentine.
Described Bluetooth antenna structure, wherein: the shape of monopole antenna is set to helix.
Described Bluetooth antenna structure, wherein: the shape of monopole antenna is set to the inverted L shape line.
Described Bluetooth antenna structure, wherein: a terminal shortcircuit of slot antenna, other end open circuit; Feed side is positioned at the open end of slot antenna.
Described Bluetooth antenna structure, wherein: the length direction of slot antenna and the vertical setting mutually of the length direction of monopole antenna.
Described Bluetooth antenna structure, wherein: monopole antenna has the shape of resonance frequency higher than the bluetooth operating frequency, and slot antenna has length and the width of resonance frequency lower than the bluetooth operating frequency.
Described Bluetooth antenna structure, wherein: monopole antenna has the shape of resonance frequency lower than the bluetooth operating frequency, and slot antenna has length and the width of resonance frequency higher than the bluetooth operating frequency.
A kind of portable radio communication device, comprise a built-in Bluetooth antenna structure, and wherein: this Bluetooth antenna structure is the described Bluetooth antenna structure of above-mentioned any one.
A kind of Bluetooth antenna structure provided by the present invention and portable radio communication device thereof, due to the hybrid antenna that has adopted the combined and shared same feed side of monopole antenna and slot antenna, realize the work in combination of electric field type antenna transmission body and field type antenna transmission body by same feed side, realized the miniaturization of portable wireless communication apparatus; And receive by the combination of Electric and magnetic fields, expanded the bandwidth of operation of Bluetooth antenna, improved the receptivity of Electric and magnetic fields, make the Bluetooth antenna receptivity of portable radio terminal under complex environment be improved, the negative effect while also having reduced hand-held the use, the Bluetooth antenna performance caused.
The accompanying drawing explanation
Fig. 1 is the structural representation of Bluetooth antenna of the present invention;
Fig. 2 is return loss (Return loss) the test curve figure of Bluetooth antenna of the present invention;
Fig. 3 is the radiation lobe figure of Bluetooth antenna of the present invention in X-Y plane;
Fig. 4 is the radiation lobe figure of Bluetooth antenna of the present invention in the X-Z plane.
Embodiment
Below with reference to accompanying drawing, the specific embodiment of the present invention and embodiment are described in detail, described specific embodiment only, in order to explain the present invention, is not intended to limit the specific embodiment of the present invention.
A kind of Bluetooth antenna structure of the present invention and portable radio communication device thereof, one of its embodiment, comprise a built-in Bluetooth antenna structure, can be arranged on printed circuit board (PCB) 1, as shown in Figure 1, this Bluetooth antenna structure comprises an electric field type emitter 2, a field type emitter 4 and common feed side 3; Electric field type emitter 2 is set to quarter-wave monopole antenna; Field type emitter 4 is set to quarter-wave slot antenna.Monopole antenna and slot antenna are arranged on printed circuit board (PCB) 1; Be provided with gap between monopole antenna and printed circuit board (PCB) 1 Fu Tong district 5; Slot antenna is connected with printed circuit board (PCB) 1 Fu Tong district 5.
Monopole antenna is half of symmetrical dipole from textural, can be encouraged from base portion, its radiation lobe figure is identical with the lobe pattern of symmetrical dipole in free space, with the dipole antenna difference be comprised of two conductors, is that monopole antenna is comprised of a conductor.And slot antenna refers to the antenna that cracks on conductor surface and form, also referred to as slot antenna.Comprise dipole antenna, symmetrical dipole, feed side etc., because of non-improvement of the present invention place, therefore do not repeat them here.
In the preferred implementation of Bluetooth antenna structure of the present invention and portable radio communication device thereof, as shown in Figure 1, electric field type antenna transmission body 2 can be quarter-wave monopole, adopted in the present embodiment the monopole antenna of the line that crawls, yet will be appreciated that, the form of electric field type antenna transmission body 2 is including, but not limited to the present embodiment, and as helix, other antenna type such as the antenna of falling L all can become this electric field type antenna transmission body 2.
The quarter-wave that the length of electric field type antenna transmission body 2 is the bluetooth operating frequency, because electric field type antenna transmission body 2 is printed on printed circuit board (PCB) 1, the dielectric constant of printed circuit board (PCB) 1 can affect the effective wavelength of bluetooth operating frequency.And the distance in change electric field type antenna transmission body 2 and printed circuit board (PCB) Fu Tong district 5, the bandwidth of operation of capable of regulating electric field type antenna transmission body 2 resonance that produce.
And the slot part that field type antenna transmission body 4 is printed circuit board (PCB) 1, length is 1/4th operation wavelengths, the one terminal shortcircuit is connected with printed circuit board (PCB) Fu Tong district 5, and other end open circuit, feed side 3 is positioned at field type antenna transmission body 4 open ends.Change length and the width of field type antenna transmission body 4, operating frequency and the bandwidth of operation of capable of regulating field type antenna transmission body 4 resonance that produce.
Further, the resonance frequency of electric field type antenna transmission body 2 and field type antenna transmission body 4 can have been encouraged in feed side 3 simultaneously.Adjust the resonance frequency of electric field type antenna transmission body 2 and field type antenna transmission body 4, make the center frequency point of the resonance frequency of an emitter wherein higher than the bluetooth operating frequency, the resonance frequency of another emitter is lower than the center frequency point of bluetooth operating frequency.If that is: monopole antenna has the shape of resonance frequency higher than the bluetooth operating frequency, slot antenna has length and the width of resonance frequency lower than the bluetooth operating frequency; Perhaps, if monopole antenna has the shape of resonance frequency lower than the bluetooth operating frequency, slot antenna has length and the width of resonance frequency higher than the bluetooth operating frequency.
3 input impedance of seeing into from feed side, electric field type antenna transmission body 2 and field type antenna transmission body 4 have been realized double resonance, thereby have widened the bandwidth of operation of Bluetooth antenna.From return loss (Return loss) curve chart as shown in Figure 2, but Bluetooth antenna steady operation of the present invention is on the center frequency point of bluetooth operating frequency 2.4GHz, and there are sizable bandwidth resources, even if in complicated applied environment, on the one hand, antenna and back-end circuit still can keep good matching properties, on the other hand, electric field type antenna transmission body 2 and field type antenna transmission body 4 can be received respectively Electric and magnetic fields, have also strengthened the service behaviour of Bluetooth antenna.
The data that record from experiment, as shown in accompanying drawing 3 and 4, the radiation lobe that solid line is electric field type antenna transmission body 2, in X-Y plane is horizontal plane, there are 0 ° and 180 ° of directivity, and be in vertical plane on the X-Z plane, essentially no directivity, have omni-directional; The radiation lobe that dotted line is field type antenna transmission body 4, in X-Y plane is horizontal plane, essentially no directivity, have omni-directional, and be in vertical plane on the X-Z plane, has 0 ° and 180 ° of directivity; Visible, both have complementarity by the spoke field pattern in Different Plane, have really strengthened the service behaviour of Bluetooth antenna, have optimized the receptivity of portable wireless communication apparatus under complex environment.
In addition, Bluetooth antenna of the present invention also can adopt the metal clips punch forming, for example can adopt the stainless steel shell fragment to be molded into Fu Tong district on monopole antenna, slot antenna, feed side and printed circuit board (PCB) by five metals.
With Bluetooth antenna structure of the prior art and portable radio communication device thereof, compare, the hybrid antenna that Bluetooth antenna in the present invention is electronically small antenna and magnetic miniature antenna, wherein, electronically small antenna is quarter-wave monopole antenna, the magnetic miniature antenna consists of quarter-wave slot antenna, one end of slot antenna is open circuit, and an end is short circuit.Feed side is the direct feed mode, from feed side, sees into, and electronically small antenna is equivalent in parallel with slot antenna.Electronically small antenna and slot antenna difference resonance are at the working frequency range of bluetooth.Realize the work in combination of electric field type antenna transmission body and field type antenna transmission body by same feed side, realized the miniaturization of portable wireless communication apparatus; And receive by the combination of Electric and magnetic fields, optimized the receptivity of portable wireless communication apparatus under complex environment.And the Bluetooth antenna in the present invention has the characteristics of small size and wide-band, and while having optimized hand-held use portable radio communication device, the negative effect that human body causes the Bluetooth antenna performance.
Should be understood that; the foregoing is only preferred embodiment of the present invention; be not sufficient to limit technical scheme of the present invention; for those of ordinary skills; within the spirit and principles in the present invention; can be increased and decreased according to the above description, replaced, converted or be improved, and all these increases and decreases, replace, conversion or improve after technical scheme, all should belong to the protection range of claims of the present invention.
Claims (9)
1. a Bluetooth antenna structure, it is characterized in that, comprise an electric field type antenna transmission body, a field type antenna transmission body and common feed side, electric field type antenna transmission body is set to quarter-wave monopole antenna, field type antenna transmission body is set to quarter-wave slot antenna, monopole antenna and slot antenna all are arranged on the same face of printed circuit board (PCB), be provided with gap between monopole antenna and printed circuit board (PCB) Fu Tong district, slot antenna is connected with printed circuit board (PCB) Fu Tong district; Adjust the resonance frequency of electric field type antenna transmission body and field type antenna transmission body, make the center frequency point of the resonance frequency of an emitter wherein higher than the bluetooth operating frequency, the resonance frequency of another emitter is lower than the center frequency point of bluetooth operating frequency.
2. Bluetooth antenna structure according to claim 1, it is characterized in that: the shape of monopole antenna is set to serpentine.
3. Bluetooth antenna structure according to claim 1, it is characterized in that: the shape of monopole antenna is set to helix.
4. Bluetooth antenna structure according to claim 1, it is characterized in that: the shape of monopole antenna is set to the inverted L shape line.
5. Bluetooth antenna structure according to claim 1, is characterized in that: a terminal shortcircuit of slot antenna, other end open circuit; Feed side is positioned at the open end of slot antenna.
6. Bluetooth antenna structure according to claim 1, is characterized in that: the length direction of slot antenna and the vertical setting mutually of the length direction of monopole antenna.
7. Bluetooth antenna structure according to claim 1, it is characterized in that: monopole antenna has the shape of resonance frequency higher than the bluetooth operating frequency, and slot antenna has length and the width of resonance frequency lower than the bluetooth operating frequency.
8. Bluetooth antenna structure according to claim 1, it is characterized in that: monopole antenna has the shape of resonance frequency lower than the bluetooth operating frequency, and slot antenna has length and the width of resonance frequency higher than the bluetooth operating frequency.
9. a portable radio communication device, comprise a built-in Bluetooth antenna structure, it is characterized in that: this Bluetooth antenna structure is the described Bluetooth antenna structure of any one in claim 1 to 8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010518831XA CN101984520B (en) | 2010-10-22 | 2010-10-22 | Bluetooth antenna structure and portable wireless communications device with same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010518831XA CN101984520B (en) | 2010-10-22 | 2010-10-22 | Bluetooth antenna structure and portable wireless communications device with same |
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| CN101984520A CN101984520A (en) | 2011-03-09 |
| CN101984520B true CN101984520B (en) | 2013-12-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI609527B (en) * | 2016-03-17 | 2017-12-21 | 宏碁股份有限公司 | Mobile device |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202019052U (en) * | 2011-03-17 | 2011-10-26 | 中兴通讯股份有限公司 | Monopole antenna |
| CN103855467B (en) * | 2012-11-30 | 2018-04-24 | 鸿富锦精密工业（深圳）有限公司 | Multi-input multi-output antenna system structure |
| CN107196064A (en) * | 2017-05-05 | 2017-09-22 | 深圳市景程信息科技有限公司 | The mode of resonance analysis method of double frequency slit antenna |
| CN111180867A (en) * | 2018-11-12 | 2020-05-19 | 西安易朴通讯技术有限公司 | Antenna radiator and electronic equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1650472A (en) * | 2001-12-18 | 2005-08-03 | 诺基亚有限公司 | Monopole slot antenna |
| CN1761100A (en) * | 2004-10-15 | 2006-04-19 | 乐金电子(中国)研究开发中心有限公司 | Wideband antenna of mobile communication terminal |
| CN201438504U (en) * | 2009-05-27 | 2010-04-14 | 比亚迪股份有限公司 | Multi-frequency antenna |
| CN201918514U (en) * | 2010-10-22 | 2011-08-03 | 惠州Tcl移动通信有限公司 | Bluetooth antenna structure and portable type wireless communication device of Bluetooth antenna structure |
-
2010
- 2010-10-22 CN CN201010518831XA patent/CN101984520B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1650472A (en) * | 2001-12-18 | 2005-08-03 | 诺基亚有限公司 | Monopole slot antenna |
| CN1761100A (en) * | 2004-10-15 | 2006-04-19 | 乐金电子(中国)研究开发中心有限公司 | Wideband antenna of mobile communication terminal |
| CN201438504U (en) * | 2009-05-27 | 2010-04-14 | 比亚迪股份有限公司 | Multi-frequency antenna |
| CN201918514U (en) * | 2010-10-22 | 2011-08-03 | 惠州Tcl移动通信有限公司 | Bluetooth antenna structure and portable type wireless communication device of Bluetooth antenna structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI609527B (en) * | 2016-03-17 | 2017-12-21 | 宏碁股份有限公司 | Mobile device |
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| CN101984520A (en) | 2011-03-09 |
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Effective date of registration: 20201229 Address after: 225700 plant area (Economic Development Zone), 2nd floor, No.2 factory building, Xinghua science and technology entrepreneurship center, Taizhou City, Jiangsu Province Patentee after: Jiangsu JieChuang Enterprise Management Co.,Ltd. Address before: 511400 No.106 Fengze East Road, Nansha District, Guangzhou City, Guangdong Province (self compiled Building 1) x1301-a4845 (cluster registration) (JM) Patentee before: Guangzhou shengxia Intellectual Property Operation Co.,Ltd. Effective date of registration: 20201229 Address after: 511400 No.106 Fengze East Road, Nansha District, Guangzhou City, Guangdong Province (self compiled Building 1) x1301-a4845 (cluster registration) (JM) Patentee after: Guangzhou shengxia Intellectual Property Operation Co.,Ltd. Address before: 516006 Guangdong province Huizhou Zhongkai hi tech Development Zone No. 23 District Patentee before: HUIZHOU TCL MOBILE COMMUNICATION Co.,Ltd. |
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Address after: Room 517, Block A, Yingying Building, No. 99, Tuanjie Road, Yanchuangyuan, Nanjing Area, Nanjing Pilot Free Trade Zone, Jiangsu Province, 210000 Patentee after: Nanjing Daotu Information Technology Co.,Ltd. Address before: 252000 Room 102, 10th floor, Norbert R & D center building, No. 88, South Huanghe Road, high tech Zone, Liaocheng City, Shandong Province Patentee before: Shandong Daotu Information Technology Co.,Ltd. |
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