CN203250847U - Adjustable antenna and wireless communication apparatus - Google Patents
Adjustable antenna and wireless communication apparatus Download PDFInfo
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- CN203250847U CN203250847U CN 201320298586 CN201320298586U CN203250847U CN 203250847 U CN203250847 U CN 203250847U CN 201320298586 CN201320298586 CN 201320298586 CN 201320298586 U CN201320298586 U CN 201320298586U CN 203250847 U CN203250847 U CN 203250847U
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- 238000004891 communication Methods 0.000 title claims abstract description 19
- 239000003990 capacitor Substances 0.000 abstract description 12
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
The utility model discloses an adjustable antenna and a wireless communication apparatus and belongs to the field of wireless communication. The adjustable antenna comprises an antenna feedback point, a first antenna routing, a second antenna routing, a variable capacitor, a programmable voltage follower circuit, a decoupling circuit and a direct-current ground circuit, wherein the antenna feedback point is connected with the first antenna routing; the antenna routings form an antenna oscillator; one end of the variable capacitor is connected with the first antenna routing, and the other end of the variable capacitor is connected with the second antenna routing; the programmable voltage follower circuit is used for providing bias voltage to the variable capacitor and for controlling the capacitance value of the variable capacitor; the decoupling circuit is used for eliminating impacts of the programmable voltage follower circuit on the antenna, such as ripples and interference; the direct-current ground circuit is used for providing a reference ground to the variable capacitor and for acting as the ground point of the antenna. With the adoption of embodiments of the utility model, the antenna size is effectively reduced, and the antenna frequency is adjusted flexibly.
Description
Technical field
The utility model relates to wireless communication field, relates in particular to a kind of adjustable antenna and radio communication device.
Background technology
Radio frequency signal channels in the radio communication device is more and more crowded.Radio communication device is frequently fast-developing to three frequencies even four from double frequency.In addition, these multi-mode radio communication devices also need to process the various signals from peripheral wireless device, such as bluetooth, WiFi and GPS.Along with the adding of WiMAX and LTE (4G), this complexity will be more and more higher.The radio communication device complexity can be more and more higher, and requirement can be processed the more signal of multiband.
Along with being on the increase of radio communication device working frequency range, antenna becomes the bottleneck of moving communicating field gradually, how to utilize limited antenna space to realize that it is current urgent problem that increasing frequency range requires.
At present, the antenna of radio communication device is realized by following dual mode:
By switch different match circuits is loaded on the antenna, controls the parameter matching state by the combination of control assigned switch state, reach the purpose of regulating resonance frequency and bandwidth of operation; Perhaps load resonant circuit at antenna, utilize coupling to come widening frequency band.The drawback of prior art is a lot: area occupied is large; The number of frequency bands that can regulate is restricted by the switch way; Frequency tuning range is little.
Summary of the invention
In view of this, the technical problems to be solved in the utility model is to provide a kind of adjustable antenna and radio communication device, makes antenna be operated in optional frequency in the tuning range by load variable capacitance at the antenna cabling.
For solving above technical problem, the technical solution adopted in the utility model is as follows:
According to an aspect of the present utility model, a kind of adjustable antenna that provides comprises antenna feed point, the first antenna cabling and the second antenna cabling, antenna feed point is connected with the first antenna cabling, and variable capacitance, described variable capacitance one end connects the first antenna cabling, and the other end connects the second antenna cabling.
Further, adjustable antenna also comprises: the program-controlled voltage output circuit, be connected with described variable capacitance, and be used for providing bias voltage to variable capacitance, control its capacitance.
Further, adjustable antenna also comprises: the DC earthing circuit, be connected with described the first antenna cabling or the second antenna cabling, and be used for providing with reference to ground to variable capacitance.
Further, adjustable antenna also comprises: also comprise: decoupling circuit, and variable capacitance connects the program-controlled voltage output circuit by decoupling circuit, and decoupling circuit is used for eliminating for the impact of program-controlled voltage output circuit on antenna.
According to an aspect of the present utility model, a kind of radio communication device that provides, comprise adjustable antenna, specifically comprise antenna feed point, the first antenna cabling and the second antenna cabling, antenna feed point is connected with the first antenna cabling, and variable capacitance, described variable capacitance one end connects the first antenna cabling, and the other end connects the second antenna cabling.
Compared with prior art, the adjustable antenna that the utility model embodiment provides and radio communication device, antenna volume is less, and the working frequency range of the antenna cover of equal volume is more, operating frequency can be controlled by software flexible in tuning range, has greatly improved antenna performance and user satisfaction.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present utility model, consists of a part of the present utility model, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is a kind of adjustable antenna structural representation that the utility model embodiment provides;
Fig. 2 is a kind of adjustable antenna circuit theory diagrams that the utility model preferred embodiment provides.
Embodiment
In order to make technical problem to be solved in the utility model, technical scheme and beneficial effect clearer, clear, below in conjunction with drawings and Examples, the utility model is further elaborated.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.
Be a kind of adjustable antenna structural representation that the utility model embodiment provides as shown in Figure 1, this antenna comprises:
Antenna feed point 10, the first antenna cablings 20, the second antenna cablings 30 also comprise: variable capacitance 40, program-controlled voltage output circuit 50, decoupling circuit 60, DC earthing circuit 70.
Antenna feed point 10 is connected with the first antenna cabling 20, is used for the feed-in electromagnetic wave signal;
The first antenna cabling 20 and the second antenna cabling 30 are all for consisting of antenna oscillator;
Variable capacitance 40 is implanted in the antenna cabling, and an end connects the first antenna cabling 20, and the other end connects the second antenna cabling 30.Variable capacitance 40 connects antenna feed point 10 by the first antenna cabling 20, and by changing the capacitance of variable capacitance 40, antenna impedance is affected by variable capacitance, and resonance frequency changes thereupon;
Program-controlled voltage output circuit 50 is connected with described variable capacitance 40, and being used for provides bias voltage to variable capacitance 40, controls its capacitance;
Decoupling circuit 60, variable capacitance 40 connects program-controlled voltage output circuit 50 by decoupling circuit 60, and decoupling circuit 60 is used for eliminating for the impact of program-controlled voltage output circuit 50 on antenna, such as ripple and interference etc.;
DC earthing circuit 70 is connected with described the first antenna cabling 20 or the second antenna cabling 30, and being used for provides with reference to ground to variable capacitance 40, and the while is as the earth point of antenna itself.
A kind of adjustable antenna circuit diagram that the utility model preferred embodiment provides as shown in Figure 2:
In Fig. 2, antenna in position is divided into two sections, and is middle by the tunable capacitor connection, can seek suitable position by debugging repeatedly;
The program-controlled voltage output circuit provides control voltage for tunable capacitor;
Increase decoupling circuit in the middle of tunable capacitor and the program-controlled voltage output circuit, preferably adopt inductance to realize, such as L1 among Fig. 2, be used for eliminating for the impact of program-controlled voltage output circuit on antenna; Inductance also can replace with the resistance of large resistance.
Be earth point near the antenna feed point RF in, the utility model utilizes the earth point of antenna itself as the DC earthing point of variable capacitance, and is simple and reliable.
After loading tunable capacitor on the antenna, antenna impedance is affected by variable capacitance, and resonance frequency changes thereupon.And tunable capacitor is to change its capacitance by the variation of controlling voltage.So the resonance frequency of antenna can be controlled by external voltage.Control voltage is provided by the program-controlled voltage output circuit among the utility model embodiment, and preferred, this output voltage can be by software control.Therefore the resonance frequency of antenna can be adjusted in its excursion flexibly by software among the utility model embodiment.
The utility model embodiment also provides a kind of radio communication device, comprises above-mentioned adjustable antenna.
A kind of adjustable antenna and radio communication device that the utility model embodiment provides, after loading tunable capacitor on the antenna, antenna impedance is affected by variable capacitance, thereby the flexible optional frequency that obtains in tuning range, effectively reduce antenna volume, improved the performance of radio communication device.
Above with reference to the accompanying drawings of preferred embodiment of the present utility model, be not so limit to interest field of the present utility model.Those skilled in the art do not break away from scope of the present utility model and essence, can have multiple flexible program to realize the utility model, obtain another embodiment such as the feature as an embodiment can be used for another embodiment.Allly using any modification of doing within the technical conceive of the present utility model, be equal to and replace and improve, all should be within interest field of the present utility model.
Claims (6)
1. an adjustable antenna comprises antenna feed point, the first antenna cabling and the second antenna cabling, and antenna feed point is connected with the first antenna cabling, it is characterized in that, and described adjustable antenna also comprises:
Variable capacitance, described variable capacitance one end connects the first antenna cabling, and the other end connects the second antenna cabling.
2. adjustable antenna according to claim 1 is characterized in that, also comprises:
The program-controlled voltage output circuit is connected with described variable capacitance, and being used for provides bias voltage to variable capacitance, controls its capacitance.
3. adjustable antenna according to claim 1 is characterized in that, also comprises:
The DC earthing circuit is connected with described the first antenna cabling or the second antenna cabling, and being used for provides with reference to ground to variable capacitance.
4. adjustable antenna according to claim 2 is characterized in that, also comprises:
Decoupling circuit, variable capacitance connects the program-controlled voltage output circuit by decoupling circuit, and decoupling circuit is used for eliminating for the impact of program-controlled voltage output circuit on antenna.
5. adjustable antenna according to claim 4 is characterized in that, described decoupling circuit is inductance or resistance.
6. a radio communication device is characterized in that, comprises such as the described adjustable antenna of claim 1-5 any one claim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320298586 CN203250847U (en) | 2013-05-28 | 2013-05-28 | Adjustable antenna and wireless communication apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320298586 CN203250847U (en) | 2013-05-28 | 2013-05-28 | Adjustable antenna and wireless communication apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203250847U true CN203250847U (en) | 2013-10-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320298586 Expired - Lifetime CN203250847U (en) | 2013-05-28 | 2013-05-28 | Adjustable antenna and wireless communication apparatus |
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| Country | Link |
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| CN (1) | CN203250847U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015192289A1 (en) * | 2014-06-16 | 2015-12-23 | 华为技术有限公司 | Antenna adjustment method based on variable capacitor, and corresponding apparatus |
| CN105305071A (en) * | 2015-05-07 | 2016-02-03 | 维沃移动通信有限公司 | Tunable antenna for mobile terminal |
| CN107026671A (en) * | 2016-02-01 | 2017-08-08 | 北京小米移动软件有限公司 | isolation control circuit, method and mobile terminal |
| CN111710964A (en) * | 2020-06-29 | 2020-09-25 | 上海创功通讯技术有限公司 | Antenna |
| CN113871851A (en) * | 2021-08-31 | 2021-12-31 | 荣耀终端有限公司 | Terminal antenna and mobile terminal equipment |
-
2013
- 2013-05-28 CN CN 201320298586 patent/CN203250847U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015192289A1 (en) * | 2014-06-16 | 2015-12-23 | 华为技术有限公司 | Antenna adjustment method based on variable capacitor, and corresponding apparatus |
| CN105518936A (en) * | 2014-06-16 | 2016-04-20 | 华为技术有限公司 | Antenna adjustment method based on variable capacitor, and corresponding apparatus |
| CN105518936B (en) * | 2014-06-16 | 2019-01-08 | 华为技术有限公司 | Antenna adjustment method and relevant apparatus based on variable capacitance |
| US10199727B2 (en) | 2014-06-16 | 2019-02-05 | Huawei Technologies Co., Ltd. | Variable capacitor-based antenna adjustment method and related apparatus |
| CN105305071A (en) * | 2015-05-07 | 2016-02-03 | 维沃移动通信有限公司 | Tunable antenna for mobile terminal |
| CN107026671A (en) * | 2016-02-01 | 2017-08-08 | 北京小米移动软件有限公司 | isolation control circuit, method and mobile terminal |
| CN111710964A (en) * | 2020-06-29 | 2020-09-25 | 上海创功通讯技术有限公司 | Antenna |
| CN113871851A (en) * | 2021-08-31 | 2021-12-31 | 荣耀终端有限公司 | Terminal antenna and mobile terminal equipment |
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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 |
Owner name: NUBIAN TECHNOLOGIES LTD. Free format text: FORMER NAME: SHENZHEN ZTE MOBILE TECH CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: A District No. 9018 Han innovation building in Nanshan District high tech Zone in Shenzhen city of Guangdong Province, North Central Avenue, 518000 floor 10 Patentee after: NUBIA TECHNOLOGY Co.,Ltd. Address before: A District No. 9018 Han innovation building in Nanshan District high tech Zone in Shenzhen city of Guangdong Province, North Central Avenue, 518000 floor 10 Patentee before: SHENZHEN ZTE MOBILE TELECOM Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20131023 |
|
| CX01 | Expiry of patent term |