CN201918514U - Bluetooth antenna structure and portable type wireless communication device of Bluetooth antenna structure - Google Patents
Bluetooth antenna structure and portable type wireless communication device of Bluetooth antenna structure Download PDFInfo
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- CN201918514U CN201918514U CN2010205765929U CN201020576592U CN201918514U CN 201918514 U CN201918514 U CN 201918514U CN 2010205765929 U CN2010205765929 U CN 2010205765929U CN 201020576592 U CN201020576592 U CN 201020576592U CN 201918514 U CN201918514 U CN 201918514U
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Abstract
The utility model discloses a bluetooth antenna structure and a portable type wireless communication device of the bluetooth antenna structure. The bluetooth antenna structure comprises an electric field type antenna emitter, a magnetic field type antenna emitter and a common feed end; wherein the electric field type antenna emitter is designed as a monopole antenna with the quarter wave length, and the magnetic field type antenna emitter is designed as a slit antenna with the quarter wave length. As a mixed antenna which is formed by combining the monopole antenna and the slit antenna is adopted, wherein the monopole antenna and the slit antenna share the same feed end, the electric field type antenna emitter and the magnetic field type antenna emitter are combined to work through the same feed end, thereby realizing the miniaturization of the portable type wireless communication device; the operation bandwidth of the bluetooth antenna is expanded through the combined receiving of the electric field and the magnetic field, the receptivity of the electric field and the magnetic field can be improved, so that the receptivity of the bluetooth antenna of a portable type wireless terminal under a complex situation can be improved, and the negative effect to the property of the bluetooth antenna caused by hand holding is also reduced.
Description
Technical field
The utility model relates to the portable wireless field of antenna, and 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 the portable radio communication device widely.Antenna is the important important component that is used for transmitting and receiving electromagnetic wave energy in wireless telecommunication system.
Because present technology still can't be with aerial integration to the chip of manufacture of semiconductor, thus in bluetooth module except the System on Chip/SoC of core, antenna then is that another has the critical components that influences the bluetooth module transmission characteristic.
But in the process of portable radio communication device design, modern trend has produced the demand of contradiction, and on the one hand, portable radio communication device is wanted compatible more and more communication scheme, and the consumer is interested in the littler device with built-in aerial; On the other hand, need to realize enough antenna electrical performance again, the more effective RF energy that transmits and receives; And its performance can not signal degradation occur because of environment for use, for example, and the negative effect that human body causes antenna performance during hand-held the use.
Therefore, prior art still haves much room for improvement and develops.
The utility model content
The purpose of this utility model is, 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 that when reducing hand-held the use antenna performance is caused.
The technical solution of the utility model is as follows:
A kind of Bluetooth antenna structure wherein, comprises an electric field type antenna emitter, a field type antenna emitter and common feed side; Electric field type antenna emitter is set to quarter-wave monopole antenna; Field type antenna emitter is set to quarter-wave slot antenna.
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; The 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 that resonance frequency is higher than the bluetooth operating frequency, and slot antenna has length and the width that resonance frequency is lower than the bluetooth operating frequency.
Described Bluetooth antenna structure, wherein: monopole antenna has the shape that resonance frequency is lower than the bluetooth operating frequency, and slot antenna has length and the width that resonance frequency is higher than the bluetooth operating frequency.
Described Bluetooth antenna structure, wherein: monopole antenna and slot antenna are arranged on the printed circuit board (PCB); Be provided with the gap between the deposited copper district of monopole antenna and printed circuit board (PCB); Slot antenna is connected with the deposited copper district of printed circuit board (PCB).
A kind of portable radio communication device comprises a built-in Bluetooth antenna structure, and wherein: this Bluetooth antenna structure comprises an electric field type antenna emitter, a field type antenna emitter and common feed side; Electric field type antenna emitter is set to quarter-wave monopole antenna; Field type antenna emitter is set to quarter-wave slot antenna.
A kind of Bluetooth antenna structure provided by the utility model and portable radio communication device thereof, owing to adopted monopole antenna and slot antenna is combined and the hybrid antenna of shared same feed side, realized the work in combination of electric field type antenna emitter and field type antenna emitter having realized the miniaturization of portable wireless communication apparatus by same feed side; And the combined reception by electric field and magnetic field, expanded the bandwidth of operation of Bluetooth antenna, improved the receptivity in electric field and magnetic field, make that the Bluetooth antenna receptivity of portable radio terminal under complex environment improved, the negative effect that when also having reduced hand-held the use Bluetooth antenna performance has been caused.
Description of drawings
Fig. 1 is the structural representation of the utility model Bluetooth antenna;
Fig. 2 is return loss (Return loss) the test curve figure of the utility model Bluetooth antenna;
Fig. 3 is the radiation lobe figure of the utility model Bluetooth antenna in X-Y plane;
Fig. 4 is the radiation lobe figure of the utility model Bluetooth antenna in the X-Z plane.
Embodiment
Below with reference to accompanying drawing, embodiment of the present utility model and embodiment are described in detail, described specific embodiment in order to explain the utility model, is not to be used to limit embodiment of the present utility model only.
A kind of Bluetooth antenna structure of the present utility model and portable radio communication device thereof, one of its embodiment, comprise a built-in Bluetooth antenna structure, can be arranged on the 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 the printed circuit board (PCB) 1; Be provided with the gap between the deposited copper district 5 of monopole antenna and printed circuit board (PCB) 1; Slot antenna is connected with the deposited copper district 5 of printed circuit board (PCB) 1.
Monopole antenna is half of symmetrical dipole from textural, can encourage from base portion, the lobe pattern of the symmetrical dipole in its radiation lobe figure and the free space is identical, and different is that monopole antenna is made up of a conductor with the dipole antenna of being made up of two conductors.And slot antenna refers to the antenna that cracks and form on conductor surface, is also referred to as slot antenna.Comprise dipole antenna, symmetrical dipole, feed side etc., because of non-the utility model improvement place, so do not repeat them here.
In the preferred implementation of the utility model Bluetooth antenna structure and portable radio communication device thereof, as shown in Figure 1, electric field type antenna emitter 2 can be quarter-wave monopole, adopted the monopole antenna of the line that crawls in the present embodiment, yet will be appreciated that, the form of electric field type antenna emitter 2 is including, but not limited to present embodiment, and as helix, other antenna type such as the antenna of falling L all can become this electric field type antenna emitter 2.
The length of electric field type antenna emitter 2 is the quarter-wave of bluetooth operating frequency, because electric field type antenna emitter 2 is printed on the printed circuit board (PCB) 1, the dielectric constant of printed circuit board (PCB) 1 can influence the effective wavelength of bluetooth operating frequency.And change the distance in electric field type antenna emitter 2 and the deposited copper district 5 of printed circuit board (PCB), can adjust the bandwidth of operation of electric field type antenna emitter 2 resonance that produce.
And field type antenna emitter 4 is the slot part of printed circuit board (PCB) 1, and length is 1/4th operation wavelengths, and the one terminal shortcircuit is connected with the deposited copper district 5 of printed circuit board (PCB), other end open circuit, and feed side 3 is positioned at field type antenna emitter 4 open ends.Change the length and the width of field type antenna emitter 4, can adjust the operating frequency and the bandwidth of operation of field type antenna emitter 4 resonance that produce.
Further, feed side 3 can have been encouraged the resonance frequency of electric field type antenna emitter 2 and field type antenna emitter 4 simultaneously.Adjust the resonance frequency of the resonance frequency of electric field type antenna emitter 2 and field type antenna emitter 4, make the resonance frequency of an emitter wherein be higher than the center frequency point of bluetooth operating frequency, the resonance frequency of another emitter is lower than the center frequency point of bluetooth operating frequency.That is: if monopole antenna has the shape that resonance frequency is higher than the bluetooth operating frequency, then slot antenna has length and the width that resonance frequency is lower than the bluetooth operating frequency; Perhaps, if monopole antenna has the shape that resonance frequency is lower than the bluetooth operating frequency, then slot antenna has length and the width that resonance frequency is higher than the bluetooth operating frequency.
3 input impedance of seeing into from the feed side, electric field type antenna emitter 2 and field type antenna emitter 4 have been realized double resonance, thereby have widened the bandwidth of operation of Bluetooth antenna.Curve chart as can be known from as shown in Figure 2 return loss (Return loss), but Bluetooth antenna steady operation of the present utility model is on the center frequency point of bluetooth operating frequency 2.4GHz, and have sizable bandwidth resources, even if in the applied environment of complexity, on the one hand, antenna and back-end circuit still can keep good matching properties, on the other hand, electric field type antenna emitter 2 and field type antenna emitter 4 can receive respectively electric field and magnetic field, have also strengthened the service behaviour of Bluetooth antenna.
The data that record from experiment as can be known, shown in accompanying drawing 3 and 4, solid line is the radiation lobe of electric field type antenna emitter 2, in X-Y plane is horizontal plane, has 0 ° and 180 ° of directivity, and be in the vertical plane on the X-Z plane, essentially no directivity promptly has omni-directional; Dotted line is the radiation lobe of field type antenna emitter 4, and in X-Y plane was horizontal plane, essentially no directivity promptly had omni-directional, and is in the vertical plane on the X-Z plane, has 0 ° and 180 ° of directivity; As seen, both have complementarity by the spoke field pattern in Different Plane, have strengthened the service behaviour of Bluetooth antenna really, have optimized the receptivity of portable wireless communication apparatus under complex environment.
In addition, Bluetooth antenna of the present utility model also can adopt the metal clips punch forming, for example can adopt the stainless steel shell fragment to be molded into deposited copper district on monopole antenna, slot antenna, feed side and the printed circuit board (PCB) by five metals.
Compare with Bluetooth antenna structure of the prior art and portable radio communication device thereof, Bluetooth antenna in the utility model is the hybrid antenna of electronically small antenna and magnetic miniature antenna, wherein, electronically small antenna is quarter-wave monopole antenna, the magnetic miniature antenna is made of quarter-wave slot antenna, one end of slot antenna is open circuit, and an end is short circuit.The feed side is the direct feed mode, sees into from the feed side, and electronically small antenna is in parallel with the slot antenna equivalence.Electronically small antenna and slot antenna difference resonance are at the working frequency range of bluetooth.Realized the work in combination of electric field type antenna emitter and field type antenna emitter having realized the miniaturization of portable wireless communication apparatus by same feed side; And the combined reception by electric field and magnetic field, optimized the receptivity of portable wireless communication apparatus under complex environment.And the Bluetooth antenna in the utility model has the characteristics of small size and wideband section, and when 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 above only is preferred embodiment of the present utility model; be not sufficient to limit the technical solution of the utility model; for those of ordinary skills; within spirit of the present utility model and principle; can be increased and decreased according to the above description, replacement, conversion or improvement, and all these increases and decreases, replacement, conversion or improve after technical scheme, all should belong to the protection range of the utility model claims.
Claims (10)
1. a Bluetooth antenna structure is characterized in that, comprises an electric field type antenna emitter, a field type antenna emitter and common feed side; Electric field type antenna emitter is set to quarter-wave monopole antenna; Field type antenna emitter is set to quarter-wave slot antenna.
2. Bluetooth antenna structure according to claim 1 is characterized in that: the shape of monopole antenna is set to serpentine.
3. Bluetooth antenna structure according to claim 1 is characterized in that: the shape of monopole antenna is set to helix.
4. Bluetooth antenna structure according to claim 1 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; The 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 is characterized in that: monopole antenna has the shape that resonance frequency is higher than the bluetooth operating frequency, and slot antenna has length and the width that resonance frequency is lower than the bluetooth operating frequency.
8. Bluetooth antenna structure according to claim 1 is characterized in that: monopole antenna has the shape that resonance frequency is lower than the bluetooth operating frequency, and slot antenna has length and the width that resonance frequency is higher than the bluetooth operating frequency.
9. according to arbitrary described Bluetooth antenna structure in the claim 1 to 8, it is characterized in that: monopole antenna and slot antenna are arranged on the printed circuit board (PCB); Be provided with the gap between the deposited copper district of monopole antenna and printed circuit board (PCB); Slot antenna is connected with the deposited copper district of printed circuit board (PCB).
10. a portable radio communication device comprises a built-in Bluetooth antenna structure, it is characterized in that: this Bluetooth antenna structure comprises an electric field type antenna emitter, a field type antenna emitter and common feed side; Electric field type antenna emitter is set to quarter-wave monopole antenna; Field type antenna emitter is set to quarter-wave slot antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205765929U CN201918514U (en) | 2010-10-22 | 2010-10-22 | Bluetooth antenna structure and portable type wireless communication device of Bluetooth antenna structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205765929U CN201918514U (en) | 2010-10-22 | 2010-10-22 | Bluetooth antenna structure and portable type wireless communication device of Bluetooth antenna structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201918514U true CN201918514U (en) | 2011-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205765929U Expired - Fee Related CN201918514U (en) | 2010-10-22 | 2010-10-22 | Bluetooth antenna structure and portable type wireless communication device of Bluetooth antenna structure |
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| Country | Link |
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| CN (1) | CN201918514U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101984520A (en) * | 2010-10-22 | 2011-03-09 | 惠州Tcl移动通信有限公司 | Bluetooth antenna structure and portable wireless communications device with same |
| CN105870633A (en) * | 2016-05-30 | 2016-08-17 | 中国电子科技集团公司第三十八研究所 | Ultra wide band omnibearing monopole antenna |
| CN106159447A (en) * | 2015-04-14 | 2016-11-23 | 启碁科技股份有限公司 | Smart antenna module and omnidirectional antenna |
-
2010
- 2010-10-22 CN CN2010205765929U patent/CN201918514U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101984520A (en) * | 2010-10-22 | 2011-03-09 | 惠州Tcl移动通信有限公司 | Bluetooth antenna structure and portable wireless communications device with same |
| CN101984520B (en) * | 2010-10-22 | 2013-12-11 | 惠州Tcl移动通信有限公司 | Bluetooth antenna structure and portable wireless communications device with same |
| CN106159447A (en) * | 2015-04-14 | 2016-11-23 | 启碁科技股份有限公司 | Smart antenna module and omnidirectional antenna |
| CN105870633A (en) * | 2016-05-30 | 2016-08-17 | 中国电子科技集团公司第三十八研究所 | Ultra wide band omnibearing monopole 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: 20110803 Termination date: 20141022 |
|
| EXPY | Termination of patent right or utility model |