CN2850010Y - Blue tooth antenna - Google Patents
Blue tooth antenna Download PDFInfo
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- CN2850010Y CN2850010Y CN 200520058806 CN200520058806U CN2850010Y CN 2850010 Y CN2850010 Y CN 2850010Y CN 200520058806 CN200520058806 CN 200520058806 CN 200520058806 U CN200520058806 U CN 200520058806U CN 2850010 Y CN2850010 Y CN 2850010Y
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- oscillator
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- frequency modulation
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Abstract
The utility model discloses an external blue tooth antenna which is used for being matched with electronic devices which use blue tooth wireless communication protocol. The external blue tooth antenna comprises a first oscillator and a second oscillator, wherein the second oscillator extends from one end of the first oscillator, the first oscillator is connected with the second oscillator in a non electrical method by a first frequency modulation conductor, the second oscillator is a conductor which is helically arranged, the connecting position of the first oscillator and the first frequency modulation conductor is provided with a coaxial cable of which the inner core line is electrically connected with the second oscillator by the first frequency modulation conductor, a shielding layer of the coaxial cable is electrically connected with the first oscillator and a second frequency modulation conductor extends from the oscillator which is relatively connected with the other end of the first frequency modulation conductor. The external blue tooth antenna of the utility model has the advantages of omnibearing property, higher gain and better use value and increases transmission distance.
Description
Ji Intraoperative field
The utility model relates to a kind of antenna, particularly relates to a kind of external bluetooth (Bluetooth) antenna that is used with electronic installation.
Bei Jing Ji Intraoperative
Along with development of science and technology, it is more extensive that the use occasion of radio communication becomes, and the radio communication device that thereupon is developed use also increases greatly, and the agreement of radio communication also is developed, to satisfy the requirement of high-speed traffic.Simultaneously, in communicator, generally comprise an antenna that is used to communicate by letter, this antenna type is a lot, divide roughly two kinds according to the position of antenna and electronic installation relation: the one, be arranged at the external antenna of communicator shell, the one, be arranged at the built-in aerial of communicator inside.And the antenna of above-mentioned two types is the job requirements for the communication electronic equipment that satisfies different use occasions.Wherein, generally using built-in aerial mainly is to consider that the built-in aerial volume is little; Can be contained in electronic installation inside, be beneficial to the electronic installation use protection antenna of merely hitting, in order to avoid be damaged; Make electronic installation have portability etc. preferably simultaneously, such as the antenna that uses in the notebook host case.And external antenna generally is because antenna volume is not easy to be contained in electronic installation inside, and external antenna has directivity preferably, such as, the external antenna that uses on the radio network gateway, can adjust the direction of antenna at any time according to customer requirements, etc.
Nowadays, bluetooth (Bluetooth) technology mainly is various electronic products in family or the enterprise network environment, and at the short-range radio frequency interconnection technique of speech and data, bluetooth radio operates in the 2.4-2.5GHz frequency range.And the Bluetooth wireless communication agreement is widely used in the electronic installation of radio communication, and industry has had the multiple external antenna that can satisfy the Bluetooth wireless communication agreement, but some external antenna gain is less, and working band is narrower, and signal transmission distance is shorter.
Summary of the invention
For addressing the above problem, the utility model has disclosed a kind of external Bluetooth antenna, and is used in the electronic equipment for wireless communication of using the Bluetooth wireless communication agreement, and it is big that this external Bluetooth antenna has a gain, the advantage that working band is wide, and signal transmission distance advantage far away.
External Bluetooth antenna of the present utility model is to adopt following technical scheme to realize: a kind of Bluetooth antenna, be used with the electronic installation that uses the Bluetooth wireless communication agreement, comprise: first, second oscillator, this first, second oscillator is metallic conductor, wherein terminal an extension of this first oscillator is provided with above-mentioned second oscillator, and above-mentioned first oscillator is by one first frequency modulation conductor and the non-electric connection of above-mentioned second oscillator; Above-mentioned second oscillator is the conductor that is provided with of shape in the shape of a spiral; Above-mentioned first oscillator and the above-mentioned first frequency modulation conductor connection, be provided with a coaxial cable, the internal core wire of this coaxial cable electrically connects by above-mentioned first frequency modulation conductor and above-mentioned second oscillator, and the screen of above-mentioned coaxial cable and above-mentioned first oscillator electrically connect; Above-mentioned second oscillator is with respect to another end that connects the above-mentioned first frequency modulation conductor, and extension is provided with one second frequency modulation conductor.
Owing to adopted as above technical scheme, external Bluetooth antenna of the present utility model has comprehensive property, and has higher gain, makes transmission range become big, has preferable use value.
Description of drawings
Fig. 1 is the schematic diagram of external Bluetooth antenna of the present utility model.
Fig. 2 is the schematic diagram of external another embodiment of Bluetooth antenna of the present utility model.
Fig. 3 is the size schematic diagram of external Bluetooth antenna shown in Figure 1.
Fig. 4 is the resolution chart of the voltage standing wave ratio of external Bluetooth antenna of the present utility model.
Fig. 5 A and Fig. 5 B are respectively the horizontal polarization of external Bluetooth antenna of the present utility model when working in the 2.45GHz frequency and the electromagnetic radiation test schematic diagram of perpendicular polarization.
Embodiment
As shown in Figure 1, be the schematic diagram of external Bluetooth antenna 10 of the present utility model.This Bluetooth antenna 10 comprises first oscillator 110 and second oscillator 120 that is provided with in horizontal direction, and the corresponding terminal non-electric connection setting of terminal and above-mentioned second oscillator 120 of above-mentioned first oscillator 110,110 extensions of promptly above-mentioned second oscillator, 120 first oscillators are arranged at an end direction of second oscillator 120.
Wherein, above-mentioned first oscillator 110 is that a cross section is circular column type conductor, and above-mentioned second oscillator 120 is the conductor that is provided with of shape in the shape of a spiral, form the straight screw thread number of turn of the conductor of second oscillator 120, screw thread through the pitch between, two adjacent spirals, second oscillator 120 directly through etc., the key factor when all being 120 work of above-mentioned second oscillator of influence.Wherein, the conductor of forming above-mentioned second oscillator 120 directly influences the working band of this second oscillator 120 through meeting; Pitch can influence operating frequency, specifically is that pitch is big more, and operating frequency is high more; The number of turn also can influence operating frequency; Spiral directly influence operating frequency through meeting, specifically be that diameter is big more, operating frequency is low more.
Usually, be connected with above-mentioned second oscillator 120 by one first frequency modulation conductor 130 between above-mentioned first oscillator 110, this conductor 130 is as the operating frequency of fine setting external Bluetooth antenna 10 of the present utility model; Certainly, as shown in Figure 2, also can be at above-mentioned second oscillator 120 with respect to the other end that is connected with above-mentioned conductor 13, the second frequency modulation conductor 140 also is set, this second frequency modulation conductor 140 is similar with 130 effects of the above-mentioned first frequency modulation conductor, also can both cooperations finely tunes the operating frequency of external Bluetooth antenna 10 of the present utility model.
In addition, see that Fig. 3 is the size schematic diagram of external Bluetooth antenna 10 shown in Figure 1, long measure is a millimeter among the figure.Wherein, above-mentioned first oscillator 110 is 25 millimeters; And the horizontal length of above-mentioned second oscillator 120 is 2.8 millimeters, and the pitch between the screw thread of this second oscillator 120 is 0.8 millimeter; The above-mentioned first frequency modulation conductor 130 for the cross section directly through be 0.4, length is 4 millimeters column type conductor.
In the external Bluetooth antenna 10 of the present utility model, also comprise a coaxial cable 150, above-mentioned first oscillator 110 and second oscillator 120 are electrically connected by this coaxial cable 150.This coaxial cable 150 comprises internal core wire 151 and screen 152; And be provided with an insulating barrier (not shown) between internal core wire 151 and the screen 152, make internal core wire 151 and screen 152 electrical isolation; And the outermost layer of screen 152 also is provided with an insulating barrier (not shown), makes the screen 152 and the external world be able to electrical isolation.
As shown in Figure 1 and Figure 2, at above-mentioned first oscillator 110 and the above-mentioned first frequency modulation conductor 130 connections, the internal core wire 151 of above-mentioned coaxial cable 150 electrically connects by the first frequency modulation conductor 130 and above-mentioned second oscillator 120, and the screen 152 of above-mentioned coaxial cable 150 electrically connects with above-mentioned first oscillator 110.
Fig. 4 is voltage standing wave ratio (Voltage Standing WaveRatio, resolution chart VSWR) of Bluetooth antenna 10 of the present utility model.By the test result of this figure as can be seen, when this antenna 10 is operated in frequency range 2.4-2.5GHz, the voltage standing wave ratio VSWR of this Bluetooth antenna 10 is not more than 2, as this resolution chart label is 1,2 signs, wherein, and label 1 expression, voltage standing wave ratio when frequency is 2.4GHz is 1.46, voltage standing wave ratio when label 2 expression frequencies are 2.5GHz is 1.64, thus satisfy the Bluetooth wireless communication consensus standard to antenna in the working frequency range scope, voltage standing wave ratio otherwise greater than 2.0 requirement.
Fig. 5 A and Fig. 5 B are respectively the horizontal polarization of external Bluetooth antenna 10 of the present utility model when working in the 2.45GHz frequency and the electromagnetic radiation test schematic diagram of perpendicular polarization.Wherein, in the resolution chart, each lattice is expressed as 3dB.This test shows, Bluetooth antenna 10 of the present utility model can satisfy the omnibearing directivity requirement of antenna.And the gain of the Bluetooth antenna under the normal condition is about 2.15dBi, and the gain of Bluetooth antenna of the present utility model can be up to 8dBi, so under the condition of identical transmitting power, adopt the signal level of the radiation of Bluetooth antenna of the present utility model just to become big, and corresponding transmission range also can become big.Therefore, external Bluetooth antenna of the present utility model has preferable use value.
Also have a chart, be the concrete data of the relevant item of Fig. 5 A in the present embodiment and Fig. 5 B:
Claims (2)
1. Bluetooth antenna, be used with the electronic installation that uses the Bluetooth wireless communication agreement, it is characterized in that comprising: first, second oscillator, this first, second oscillator is metallic conductor, wherein terminal an extension of this first oscillator is provided with above-mentioned second oscillator, and above-mentioned first oscillator is by one first frequency modulation conductor and the non-electric connection of above-mentioned second oscillator; Above-mentioned second oscillator is the conductor that is provided with of shape in the shape of a spiral; Above-mentioned first oscillator and the above-mentioned first frequency modulation conductor connection, be provided with a coaxial cable, the internal core wire of this coaxial cable electrically connects by above-mentioned first frequency modulation conductor and above-mentioned second oscillator, and the screen of above-mentioned coaxial cable and above-mentioned first oscillator electrically connect.
2. Bluetooth antenna as claimed in claim 1 is characterized in that, above-mentioned second oscillator is with respect to another end that connects the above-mentioned first frequency modulation conductor, and extension is provided with one second frequency modulation conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520058806 CN2850010Y (en) | 2005-05-27 | 2005-05-27 | Blue tooth antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520058806 CN2850010Y (en) | 2005-05-27 | 2005-05-27 | Blue tooth antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2850010Y true CN2850010Y (en) | 2006-12-20 |
Family
ID=37522490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520058806 Expired - Fee Related CN2850010Y (en) | 2005-05-27 | 2005-05-27 | Blue tooth antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2850010Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103943948A (en) * | 2014-04-09 | 2014-07-23 | 中名(东莞)电子有限公司 | Foldable PCB helical antenna for in-ear type wireless headset |
| WO2015085583A1 (en) * | 2013-12-13 | 2015-06-18 | 展讯通信（上海）有限公司 | Bluetooth antenna and communications terminal sharing a radio frequency (rf) coaxial cable |
-
2005
- 2005-05-27 CN CN 200520058806 patent/CN2850010Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015085583A1 (en) * | 2013-12-13 | 2015-06-18 | 展讯通信（上海）有限公司 | Bluetooth antenna and communications terminal sharing a radio frequency (rf) coaxial cable |
| CN103943948A (en) * | 2014-04-09 | 2014-07-23 | 中名(东莞)电子有限公司 | Foldable PCB helical antenna for in-ear type wireless headset |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061220 Termination date: 20120527 |