CN204289711U - Mobile terminal antenna - Google Patents
Mobile terminal antenna Download PDFInfo
- Publication number
- CN204289711U CN204289711U CN201420838100.7U CN201420838100U CN204289711U CN 204289711 U CN204289711 U CN 204289711U CN 201420838100 U CN201420838100 U CN 201420838100U CN 204289711 U CN204289711 U CN 204289711U
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- China
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- mobile terminal
- radiation conductor
- antenna
- electromagnetic wave
- radiation
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Abstract
The utility model relates to a kind of mobile terminal signal transmission technique field, particularly relates to a mobile terminal antenna.Be applied to the mobile terminal device of built-in antenna, wherein: comprise the radiation conductor a pair with predetermined gap, one impedance transformation device, connect described radiation conductor, and form feed end and earth terminal, electromagnetic wave for the balance received by described radiation conductor is converted into non-equilibrium electromagnetic wave and exports, and the non-equilibrium electromagnetic wave that described feed end and described earth terminal produce is converted into balanced electromagnetic ripple by described radiation conductor radiation.Compared with prior art, the utility model has the advantages that: adopt this kind of connected mode, feeder line as just waveguide, and does not participate in radiation, and then makes the static parameter of antenna not be subject to the impact of feed line length and cabling mode, reduces the complexity of producing.
Description
Technical field
The utility model relates to a kind of mobile terminal signal transmission technique field, particularly relates to a mobile terminal antenna.
Background technology
Current WIFI electronic product kind is more and more abundanter, be wirelessly connected in our life also ubiquitous, they need normal work, the antenna of excellent performance will carry out electromagnetic radiation, and when Antenna Design is superior not or existing defects time, product wireless performance can be caused to be deteriorated, to have a strong impact on Consumer's Experience.
During existing mobile terminal is arranged, generally all need design one built-in aerial, the kind of built-in aerial generally has PIFA (Planner Inverted F-shaped Antenna) antenna, because the shape of whole antenna is as the English alphabet " F " of mirror writing, also claims planar inverted F-shape antenna.The board structure of PIFA antenna is that employing planar radiating element is as radiant body, and using a large ground as reflecting surface, radiant body there is the pin that two close to each other, be respectively used to ground connection and the feed end being connected feed line, adopt this kind of structure, cause feed line also to participate in radiation treatment in the process of carrying out Signal transmissions.The length of feed line and the static parameter of antenna can be affected in the position of casing internal, as resonance point, VSWR and directional diagram etc.Antenna radiation performance can be caused under extreme case to worsen serious.
The mode that the method that current existing reduction aerial radiation worsens generally adopts fixing feed position and field adjustable to combine.Namely by the coupling of the good Antenna Construction Design of Radio Frequency Engineer field adjustable and feed line length to reach optimum, determine the cabling mode of feeder line at casing internal again, solidification, forms SOP (Standard Operation Procedure standard operation guiding book) and instructs plant produced.But adopt this kind of mode for the product adopting external antenna, antenna radiation performance can be reduced and worsen, but for adopting the product of built-in aerial, this kind of method has little effect.
Utility model content
For the deficiencies in the prior art, the utility model provides a kind of mobile terminal antenna, is applied to the mobile terminal device of built-in antenna, wherein: comprise
There is for a pair the radiation conductor of predetermined gap,
One impedance transformation device, connect described radiation conductor, and form feed end and earth terminal, electromagnetic wave for the balance received by described radiation conductor is converted into non-equilibrium electromagnetic wave and exports, and the non-equilibrium electromagnetic wave that described feed end and described earth terminal produce is converted into balanced electromagnetic ripple by described radiation conductor radiation.
Preferably, described radiation conductor is formed by symmetrical dipole, and described symmetrical dipole connects described impedance transformation device respectively.
Preferably, described impedance transformation device is formed primarily of microstrip balun, connects radiation conductor described in a pair, and the non-equilibrium end of described microstrip balun forms described feed end and described earth terminal respectively.
Preferably, described earth terminal connects the screen that is connected to the feeder line of described feed end.
Preferably, the brachium of described symmetrical dipole is λ/4, and λ is the electromagnetic wavelength of described mobile terminal antenna.
Compared with prior art, the utility model has the advantages that: adopt this kind of connected mode, feeder line as just waveguide, and does not participate in radiation, and then makes the static parameter of antenna not be subject to the impact of feed line length and cabling mode, reduces the complexity of producing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of a kind of embodiment of the utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, but not as restriction of the present utility model.
As shown in Figure 1, a kind of mobile terminal antenna, is applied to the mobile terminal device of built-in antenna, wherein: comprise
There is for a pair the radiation conductor 1 of predetermined gap, in order to receive or to send balanced signal,
One impedance transformation device 4, connect radiation conductor 1, and form feed end 3 and earth terminal 2, electromagnetic wave for the balance received by radiation conductor 1 is converted into non-equilibrium electromagnetic wave and exports, and the non-equilibrium electromagnetic wave that feed end 3 and earth terminal 2 produce is converted into balanced electromagnetic ripple by radiation conductor 1 radiation.Feed end 3 is connected with feeder line 5, and feeder line 5 connects LNA (LNA (the Low Noise Amplifier low noise amplifier) amplifying circuit of mobile terminal.
Impedance transformation device 4 is connected at radiation conductor 1, when Antenna Operation is in accepting state, the balanced electromagnetic ripple received by radiation conductor 1 is converted into the feeder line 5 that single-ended nonequilibrium electromagnetic transmission to connects feeder line end 3, transfer to LNA amplifying circuit, when Antenna Operation is in emission state, the single-ended nonequilibrium electromagnetic wave transmitted by feeder line 5 is converted into balanced electromagnetic ripple by impedance transformation device 4 and is sent by radiation conductor 1.Adopt this kind of connected mode, feeder line 5 as just waveguide, and does not participate in radiation, and then makes the static parameter of antenna not be subject to the impact of feeder line 5 length and cabling mode, reduces the complexity of producing.
As further preferred version, radiation conductor 1 is formed by symmetrical dipole, and symmetrical dipole connects impedance transformation device 4 respectively.Adopt symmetrical dipole, ensure the electromagnetic degree of balance of radiation, improve electromagnetic transmission quality.
As further preferred version, impedance transformation device 4 is formed primarily of microstrip balun, and the balance end of microstrip balun connects a pair radiation conductor 1, and the non-equilibrium end of microstrip balun forms feed end 3 and earth terminal 2 respectively.
Further, as Fig. 2 depicted, illustrate with the integrated microstrip balun of the BL2012 series of ACX, integrated microstrip balun has 6 pins, and 1 pin connects feeder line 5,2 pin, 5 pins, 6 pins formation earth terminals, 3 pins and 4 pins connected symmetrical dendrimer oscillator respectively, by integrated microstrip balun, by flowing into the outside circuits mask of feeder line 5 layers, the transmission only being carried out electric current by the core of feeder line 5 can be made.And then make the state of feeder line 5 not affect the radiation of antenna.
As further preferred version, earth terminal connects the screen of feeder line 5.Structure is simple.
As further preferred version, the brachium of symmetrical dipole is λ/4, and λ is the electromagnetic wavelength of described mobile terminal antenna.Further, be the antenna of 2450MHz for resonance frequency, the length of being poised for battle oscillator is 2.7 centimetres.
These are only the utility model preferred embodiment; not thereby execution mode of the present utility model and protection range is limited; to those skilled in the art; should recognize and all should be included in the scheme that equivalent replacement done by all utilization the utility model specifications and diagramatic content and apparent change obtain in protection range of the present utility model.
Claims (5)
1. a mobile terminal antenna, is applied to the mobile terminal device of built-in antenna, it is characterized in that: comprise
There is for a pair the radiation conductor of predetermined gap,
One impedance transformation device, connect described radiation conductor, and form feed end and earth terminal, electromagnetic wave for the balance received by described radiation conductor is converted into non-equilibrium electromagnetic wave and exports, and the non-equilibrium electromagnetic wave that described feed end and described earth terminal produce is converted into balanced electromagnetic ripple by described radiation conductor radiation.
2. mobile terminal antenna according to claim 1, is characterized in that, described radiation conductor is formed by symmetrical dipole, and described symmetrical dipole connects described impedance transformation device respectively.
3. mobile terminal antenna according to claim 1, it is characterized in that, described impedance transformation device is formed primarily of microstrip balun, and the balance end of described microstrip balun connects radiation conductor described in a pair, and the non-equilibrium end of described microstrip balun forms described feed end and described earth terminal respectively.
4. mobile terminal antenna according to claim 1, is characterized in that, described earth terminal connects the screen that is connected to the feeder line of described feed end.
5. mobile terminal antenna according to claim 2, is characterized in that, the brachium of described symmetrical dipole is λ/4, and λ is the electromagnetic wavelength of described mobile terminal antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420838100.7U CN204289711U (en) | 2014-12-19 | 2014-12-19 | Mobile terminal antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420838100.7U CN204289711U (en) | 2014-12-19 | 2014-12-19 | Mobile terminal antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204289711U true CN204289711U (en) | 2015-04-22 |
Family
ID=52872843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420838100.7U Expired - Fee Related CN204289711U (en) | 2014-12-19 | 2014-12-19 | Mobile terminal antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204289711U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2014
- 2014-12-19 CN CN201420838100.7U patent/CN204289711U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US11784405B2 (en) | 2019-03-26 | 2023-10-10 | Huawei Technologies Co., Ltd. | Smart antenna, antenna feeder system, antenna communications system, and AP |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20181219 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |