CN202977730U - Device utilizing adjustable capacitor for adjusting antenna frequency - Google Patents
Device utilizing adjustable capacitor for adjusting antenna frequency Download PDFInfo
- Publication number
- CN202977730U CN202977730U CN 201220687747 CN201220687747U CN202977730U CN 202977730 U CN202977730 U CN 202977730U CN 201220687747 CN201220687747 CN 201220687747 CN 201220687747 U CN201220687747 U CN 201220687747U CN 202977730 U CN202977730 U CN 202977730U
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- inverter circuit
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Abstract
The utility model discloses a device utilizing an adjustable capacitor for adjusting antenna frequency. The device comprises an antenna body, an antenna signal receiving end, an impedance conversion circuit and an adjusting device of the impedance conversion circuit, the impedance conversion circuit is connected between the antenna signal receiving end and the antenna body and comprises a plurality of impedance elements in series connection or parallel connection and a plurality of different contacts, and the adjusting device is selectively connected with different contacts to change input impedance values of the impedance conversion circuit. Input impedance of an antenna is changed through the impedance conversion circuit and the adjusting device, and the device is an antenna device applicable to radio frequency bands of various wireless communication systems with different wavebands, and has the advantages of simple structure, low production cost, convenience for antennal wavelength band adjusting and the like.
Description
Technical field
The utility model relates to technical field of radio, in particular a kind of device that utilizes adjustable condenser to regulate antenna frequencies.
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Background technology
The hand-held radio equipment antenna need to be applicable to the radio band of all kinds of wireless telecommunication systems commonly used at present, is used for improving communication apparatus and receives and transmission signal quality.Modern wireless communication technique fast development, being accompanied by wireless communication technique all sorts of flowers of all kinds volleys, utilization to radio spectrum resources is also more and more extensively got up, as GSM, CDMA, 3G, BT, GPS, CMMB, WiFi, Wimax, walkie talkie, RFID etc., Internet of Things etc. technology, these a series of communication standards are all worked on the wave band of different radio waves.
When the user needs the institute's wireless device of holding adjusting to be applied to a plurality of wave band, at the larger different operating wave band of span, wireless device is regulated and just brought great difficulty, since the individual antenna narrow bandwidth, limited coverage area, be difficult to satisfy the larger multiband of span, the performance requirement of high bandwidth.The user often needs to carry a plurality of antenna changing-overs that independently are operated in different-waveband above radio receiver, and is very inconvenient.In the situation that antenna size is limited, be difficult to make hand held antenna that reasonable gain is arranged in the band limits of needs.
Therefore, prior art has yet to be improved and developed.
The utility model content
The technical problems to be solved in the utility model is, the beamwidth of antenna for prior art is narrow, and the defective of limited coverage area provides a kind of device that utilizes adjustable condenser to regulate antenna frequencies, this antenna can satisfy the frequency adjustment between multiband, provides users with the convenient.
The technical scheme that the utility model technical solution problem adopts is as follows:
A kind of device that utilizes adjustable condenser to regulate antenna frequencies, wherein, comprise, antenna body, antenna receiving signal end, impedance inverter circuit and being used for regulated the adjusting device of the input impedance value of impedance inverter circuit, and described impedance inverter circuit is connected between described antenna receiving signal end and described antenna body; Described impedance inverter circuit comprises the contact that several impedance components connected in series or in parallel are different with several; Described adjusting device connects by selection the input impedance value that different contacts changes described impedance inverter circuit.
The described device that utilizes adjustable condenser to regulate antenna frequencies wherein, is electrically connected to described antenna body after described impedance component series connection,
The described device that utilizes adjustable condenser to regulate antenna frequencies, wherein, described contact comprises the first contact and the second contact, described the first contact and described the second contact separation setting, described the first described antenna receiving signal end in contact connects, described the second contact be connected between described impedance component and described antenna body be connected between two described impedance components or be connected to described impedance component and described antenna receiving signal end between.
The described device that utilizes adjustable condenser to regulate antenna frequencies, wherein, described adjusting device is the contact slide plate, described contact slide plate slides between described the first contact and the second contact.
The described device that utilizes adjustable condenser to regulate antenna frequencies, wherein, described antenna also comprises earthing device, described earthing device is connected with the antenna receiving signal end.
Beneficial effect: a kind of device that utilizes adjustable condenser to regulate antenna frequencies provided by the utility model, can change the input impedance of antenna by impedance inverter circuit and adjusting device, therefore can great-jump-forward change the working band of antenna cover.Antenna assembly of the present utility model is applicable to the adjusting of radio band of the wireless telecommunication system of all kinds of different-wavebands, be used for enlarging the service band of antenna, improving communication apparatus receives and the quality that transmits, simultaneously, simple in structure, the advantage such as production cost is low, and the service band of antenna is easy to adjust that have.
Description of drawings
Fig. 1 is a kind of structural representation that utilizes adjustable condenser to regulate device first embodiment of antenna frequencies of the utility model.
Fig. 2 is a kind of structural representation that utilizes adjustable condenser to regulate device second embodiment of antenna frequencies of the utility model.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, clear and definite, referring to the accompanying drawing embodiment that develops simultaneously, the utility model is further described.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
As shown in Figure 1, the utility model is a kind of utilizes adjustable condenser to regulate the first embodiment of the device of antenna frequencies, comprises antenna body 1, antenna receiving signal end 2, impedance inverter circuit 3 and is used for regulating the adjusting device 4 of the input impedance value of impedance inverter circuit.Impedance inverter circuit 3 is connected between antenna receiving signal end 2 and antenna body 1, and antenna receiving signal end 2 is used for being connected with wireless telecommunication system, is used for receiving wireless communication signal.The adjusting device 4 of impedance inverter circuit can be regulated the input impedance value of impedance inverter circuit 3, thereby changes the service band of antenna, makes antenna be applicable to a plurality of different wave bands.
Wherein, described impedance inverter circuit 3 comprises that three impedance component L1, L2 that are connected in series and L3 are the 301, first contact 302 and the second contact 303.Be electrically connected to antenna body 1 after three impedance component L1, L2 and L3 series connection.Described adjusting device 4 connects by selection the input impedance value that different contacts changes described impedance inverter circuit 3.Described the first contact 302 and 303 intervals, the second contact arrange, and the first contact 302 is connected with signal end, and the second contact 303 is connected between impedance component 301 and antenna body 1.
Adjusting device 4 can slide up and down, when adjusting device 4 is positioned at the S0 place, input impedance is the impedance sum of L1, L2 and L3, when adjusting device 4 is positioned at the S1 place, input impedance is L1 and L2 impedance sum, and when adjusting device 4 was positioned at the S2 place, input impedance was L1, when adjusting device 4 was positioned at the S3 place, input impedance was 0.The first contact 302 in the present embodiment has three, but is understandable that, the first contact 302 also can arrange one, can realize by the mode of rotation adjustment device 4 regulating.
The main body of antenna can be selected according to actual needs for helical antenna formula, pcb board Antenna Type or Metallic rod element antenna formula etc., is the pcb board Antenna Type in the present embodiment.
Further, adjusting device is slided between to the contact many for contact slide plate, contact slide plate.Convenient by the slide plate slide handover, simple in structure, easy to operate.Contact slide plate in the present embodiment, adjusting device can also realize by alternate manners such as diverter switches.
Further, antenna also comprises earthing device, and earthing device is connected with the antenna receiving signal end.Earthing device in the present embodiment is magnetic sheet, and magnetic sheet can be adsorbed on work rack made of iron or table top, and on the one hand easy fixed antenna can also increase contact area in addition, and radiance is provided.Earthing device 4 is not limited to magnetic sheet, and it can be also sheet metal or other device.
Further, external antenna also comprises shell, antenna body and impedance inverter circuit setting in the enclosure, earthing device is fixed on outer casing bottom, adjusting device is given prominence to case surface.Shell can prevent that inner antenna body is impaired, and the outstanding case surface setting of adjusting device is convenient to regulate.
Further, the antenna receiving signal end also is connected with the radio frequency electrical cable, can be connected with wireless telecommunication system by the radio frequency electrical cable is convenient.
A kind of device of adjustable condenser adjusting antenna frequencies that utilizes that the utility model provides is by utilizing tunable capacitor to be serially connected in the feed circuit of antenna, the impedance of antenna is changed, thereby change the resonance point of antenna, change the operating frequency of antenna, can make antenna be operated in a plurality of different frequency ranges, there is volume little, gains high, cover the many characteristics of frequency range.
As shown in Figure 2, utilize adjustable condenser to regulate the structural representation of device second embodiment of antenna frequencies for the present embodiment is a kind of, in Fig. 2, L1, L2, L3 are impedance component 301, be electrically connected to antenna body 1 after three impedance components 301 are in parallel, impedance inverter circuit 3 also comprises many to the contact, and adjusting device 4 connects by selection the input impedance value that different contacts changes impedance inverter circuit 3.Described contact comprises that the first contact 302 and 303, the first contacts 302, the second contact and 303 intervals, the second contact arrange, and the first contact 302 is connected with antenna receiving signal end 2, and the second contact 303 is connected with impedance component 301 or antenna body 1.Adjusting device 4 can slide up and down, and when adjusting device 4 was positioned at the S0 place, input impedance was 0, when adjusting device 4 was positioned at the S1 place, input impedance was L3, when adjusting device 4 is positioned at the S2 place, input impedance is L2, and when adjusting device 4 was positioned at the S3 place, input impedance was L1.The first contact 302 in the present embodiment has a plurality of, but is understandable that, the first contact 302 also can arrange one, can realize by the mode of rotation adjustment device 4 regulating.
The utility model discloses a kind of device that utilizes adjustable condenser to regulate antenna frequencies, this device comprises, the adjusting device of antenna body, antenna receiving signal end, impedance inverter circuit and impedance inverter circuit, described impedance inverter circuit are connected between described antenna receiving signal end and described antenna body; Described impedance inverter circuit comprises the contact that several impedance components connected in series or in parallel are different with several; Described adjusting device connects by selection the input impedance value that different contacts changes described impedance inverter circuit; Device of the present utility model changes the input impedance of antenna by impedance inverter circuit and adjusting device, thereby the frequency that can satisfy antenna is regulated the radio band of the wireless telecommunication system of all kinds of different-wavebands, simple in structure, the advantage such as production cost is low, and the service band of antenna is easy to adjust that have.
Should be understood that; application of the present utility model is not limited to above-mentioned giving an example, and for those of ordinary skills, can be improved according to the above description or conversion; for example, all these improve and conversion all should belong to the protection range of the utility model claims.
Claims (5)
1. device that utilizes adjustable condenser to regulate antenna frequencies, it is characterized in that, comprise, antenna body, antenna receiving signal end, impedance inverter circuit and being used for regulated the adjusting device of the input impedance value of impedance inverter circuit, and described impedance inverter circuit is connected between described antenna receiving signal end and described antenna body; Described impedance inverter circuit comprises the contact that several impedance components connected in series or in parallel are different with several; Described adjusting device connects by selection the input impedance value that different contacts changes described impedance inverter circuit.
2. utilize according to claim 1 adjustable condenser to regulate the device of antenna frequencies, it is characterized in that, be electrically connected to described antenna body after described impedance component series connection.
3. utilize according to claim 1 adjustable condenser to regulate the device of antenna frequencies, it is characterized in that, described contact comprises the first contact and the second contact, described the first contact and described the second contact separation setting, described the first described antenna receiving signal end in contact connects, described the second contact be connected between described impedance component and described antenna body be connected between two described impedance components or be connected to described impedance component and described antenna receiving signal end between.
4. utilize according to claim 3 adjustable condenser to regulate the device of antenna frequencies, it is characterized in that, described adjusting device is the contact slide plate, and described contact slide plate slides between described the first contact and the second contact.
5. utilize according to claim 1 adjustable condenser to regulate the device of antenna frequencies, it is characterized in that, described antenna also comprises earthing device, and described earthing device is connected with the antenna receiving signal end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220687747 CN202977730U (en) | 2012-12-13 | 2012-12-13 | Device utilizing adjustable capacitor for adjusting antenna frequency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220687747 CN202977730U (en) | 2012-12-13 | 2012-12-13 | Device utilizing adjustable capacitor for adjusting antenna frequency |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202977730U true CN202977730U (en) | 2013-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220687747 Expired - Fee Related CN202977730U (en) | 2012-12-13 | 2012-12-13 | Device utilizing adjustable capacitor for adjusting antenna frequency |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202977730U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110289881A (en) * | 2019-06-27 | 2019-09-27 | 上海创功通讯技术有限公司 | Wireless communication device, RF IC and electric terminal |
| WO2020191610A1 (en) * | 2019-03-26 | 2020-10-01 | 华为技术有限公司 | Smart antenna, antenna feeder system, antenna communication system and ap |
-
2012
- 2012-12-13 CN CN 201220687747 patent/CN202977730U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020191610A1 (en) * | 2019-03-26 | 2020-10-01 | 华为技术有限公司 | Smart antenna, antenna feeder system, antenna communication system and ap |
| CN112534639A (en) * | 2019-03-26 | 2021-03-19 | 华为技术有限公司 | Smart antenna, antenna feeder system, antenna communication system and AP |
| EP3937305A4 (en) * | 2019-03-26 | 2022-03-16 | Huawei Technologies Co., Ltd. | Smart antenna, antenna feeder system, antenna communication system and ap |
| US11784405B2 (en) | 2019-03-26 | 2023-10-10 | Huawei Technologies Co., Ltd. | Smart antenna, antenna feeder system, antenna communications system, and AP |
| CN110289881A (en) * | 2019-06-27 | 2019-09-27 | 上海创功通讯技术有限公司 | Wireless communication device, RF IC and electric terminal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518102, Guangdong Shenzhen Xixiang Gang Kong oyster industry park, a factory floor 3 Patentee after: SHENZHEN VLG WIRELESS TECHNOLOGY CO., LTD. Address before: 518102, Guangdong Shenzhen Xixiang Gang Kong oyster industry park, a factory floor 3 Patentee before: Shenzhen VLG Wireless Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20201213 |