CN101431344A - FM radio built-in antenna in mobile phone - Google Patents
FM radio built-in antenna in mobile phone Download PDFInfo
- Publication number
- CN101431344A CN101431344A CNA2007100478352A CN200710047835A CN101431344A CN 101431344 A CN101431344 A CN 101431344A CN A2007100478352 A CNA2007100478352 A CN A2007100478352A CN 200710047835 A CN200710047835 A CN 200710047835A CN 101431344 A CN101431344 A CN 101431344A
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- antenna
- mobile phone
- aerial
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Abstract
A built-in antenna of an FM radio in a mobile phone adopts the form of a flexible printing circuit board (FPC); an antenna is divided into three layers of wiring which are zigzag; every layer of wiring forms electrical connection by through holes. Therefore, the antenna has the advantages of low manufacturing cost, small occupying space, easy installation and light weight.
Description
Technical field
The present invention relates to built-in FM radio antenna in a kind of mobile communication, specifically, relate to the mobile phone FM radio reception built-in aerial of a kind of flexible circuit board (FPC) form.
Background technology
Along with cell-phone function diversification day by day, the mobile phone that has the FM function enters into people's life silently.As everyone knows, antenna is the ear of FM, and faint electric wave enters receiving mechanism from antenna through feeder line, could allow people hear the sound in radio station, a distant place.The quality of a receiving system, antenna has accounted for half.People wish that antenna can have high gain, faint signal is become loud, and people wish that also antenna can have good selective power, the strong platform retaining of paging station's interference and this locality outside, people wish that also antenna-feedback system reduces loss as far as possible, all delivers to the signal of each microvolt the front end of receiving mechanism.
The people who uses portable radio to listen to FM for great majority, the antenna of the portable radio of their usefulness is the telescopic antenna on the broadcast receiver just perhaps, though such antenna is simple and convenient, will seems very heavy if it is used for mobile phone, and take up space again.Be mobile phone low margin age now, how in the various performances that guarantee mobile phone, additionally do not increase more cost and become the focus that people more pay close attention to.So just will consider with simply, realize that easily form realizes some function cheaply.
The FM broadcast band is on the frequency from 87.5MHz to 108MHz, and corresponding wavelength is 3.4 meters to 2.7 meters, generally is called 3 VHF bands, is a section of VHF (very high frequency(VHF), Very High Frequency).This is below wave band, and 54MHz is a television broadcast band to 87.5MHz, more than, 108MHz is the air communications wave band to 136MHz.The wireless reception frequency range of FM in the mobile phone be 87.5MHz to 108MHz, again because any antenna all resonance on certain frequency, just, receive the signal of which frequency, just wish that antenna resonance is on that frequency.Antenna resonance is the requirement the most basic to antenna, and the key data that the resonance problems of antenna relates to is wavelength and quarter-wave thereof, according to FM working frequency range recited above, quarter-wave means about 70 to 80 centimeter length, becomes the problem that people study so how effectively to utilize the space and dwindle antenna volume.
Summary of the invention
The object of the present invention is to provide FM broadcast receiver built-in aerial in a kind of mobile phone.Technical conceive of the present invention is to utilize the simple mode of flexible circuit board (FPC) to realize the FM antenna function, need not earphone and just can listen to the FM radio station, overcome mobile phone and need under the situation of lug machine outside and could use the FM radio station to listen to function with FM radio function.
Technical scheme of the present invention is as follows:
The invention provides the FM antenna of a kind of flexible circuit board (FPC) form, be provided with the FM microprocessor in the mobile phone, this FM microprocessor is used to handle the FM radio station broadcast signal, the FM antenna is printed on the flexible circuit board (FPC), and an end is the feed side, and the other end is the open end, wherein the feed side of FM antenna is positioned at the handle place of flexible circuit board (FPC), direct and FM microprocessor electrically connects, and when using FM radio station function, the electromagnetic wave resonance in FM antenna and FM radio station is to receive the FM radio station broadcast signal.
Characteristics of the present invention are: the FM antenna that a. is independent, and make antenna performance more stable, have better FM radio station acceptable effect; B. antenna body realizes that with flexible circuit board (FPC) form overall structure is simple, is easy to processing; C. the cabling of antenna body is gone up in flexible circuit board (FPC) and is divided three layers, and each layer is realized being electrically connected by through hole.
Advantage of the present invention is: the FM antenna realizes that with flexible circuit board (FPC) form more more convenient than serve as the FM antenna with earphone, antenna body is light small and exquisite, and it is very little to take the mobile phone inner space, and cost is lower.
Description of drawings
Fig. 1 is the integral layout figure of FM microprocessor and FM antenna in the mobile phone;
Fig. 2 is the structure chart of the FM antenna of flexible circuit board (FPC) form.
Among the figure: mobile phone pcb board 1, FM microprocessor 2, the FM antenna 3 of flexible circuit board form, electrical via 4, the feed side 5 of FM antenna, FM antenna cabling 6
Embodiment
The example that following basis is concrete is illustrated in detail in conjunction with diagram.
Consult Fig. 1, the about 5*30mm of area of the FM antenna 3 of this flexible circuit board (FPC) form, the about 1mm of thickness is so can be placed on the side of mobile phone inner casing, perhaps mobile phone board edge.Behind the electromagnetic wave that FM antenna 3 receives from aerial FM frequency range, be converted into high-frequency current, by the handle feed-in FM microprocessor of flexible circuit board (FPC).FM microprocessor 2 on the cell phone mainboard 1 is used for the FM radio station broadcast signal is treated to audio signal, thereby can use the loud speaker of mobile phone to play-over the FM program of radio station.So just need not rely on and just can listen to the FM program of radio station by earphone.
Consult Fig. 2, because the frequency range of the tranmitting frequency in FM radio station is 88-107MHz, so the electrical length of FM antenna is the electromagnetic quarter-wave (being about 70mm) of FM frequency range, so, when the function of the FM radio station of use mobile phone, the electromagnetic wave resonance of antenna and radio station emission, thus the FM radio station broadcast signal received.Because the width of antenna cabling directly has influence on the bandwidth of antenna, so the antenna cabling can not be too thin, this structure is got 0.4mm.Approximately the antenna body of 70mm is very long, and this structure is walked toothing with it, and divides three layers of cabling, realizes being electrically connected by through hole 4 between every layer, so very effectively save area.
In sum, the FM antenna of this kind flexible circuit board (FPC) form, simple, processing easily, stable performance, volume is small and exquisite, as long as open the FM function in the mobile phone, just can directly listen to the FM radio station by loud speaker, and receptivity is good.
Claims (3)
1, FM broadcast receiver built-in aerial in a kind of mobile phone, be installed on the mainboard of mobile phone, the one end is the open end, the other end directly is connected with little processing on being positioned at mainboard, it is characterized in that, adopts soft flexible circuitry plate structure, be printed on the mainboard of mobile phone, be divided into three layers of cabling, cabling is an indentation, every layer of cabling by through hole to be electrically connected.
2, FM broadcast receiver built-in aerial in the mobile phone according to claim 1 is characterized in that, the length of FM antenna is the quarter-wave of FM wave band, and its length is 70-80mm, and trace width is more than or equal to 0.4mm.
3, FM broadcast receiver built-in aerial in the mobile phone according to claim 1 is characterized in that, described built-in aerial is installed in the side of mobile phone inner casing or the edge of cell phone mainboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100478352A CN101431344A (en) | 2007-11-06 | 2007-11-06 | FM radio built-in antenna in mobile phone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100478352A CN101431344A (en) | 2007-11-06 | 2007-11-06 | FM radio built-in antenna in mobile phone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101431344A true CN101431344A (en) | 2009-05-13 |
Family
ID=40646538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100478352A Pending CN101431344A (en) | 2007-11-06 | 2007-11-06 | FM radio built-in antenna in mobile phone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101431344A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106663865A (en) * | 2016-09-27 | 2017-05-10 | 北京小米移动软件有限公司 | Terminal casing and terminal |
| CN109950294A (en) * | 2019-04-10 | 2019-06-28 | 京东方科技集团股份有限公司 | Display panel and display device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040108959A1 (en) * | 2002-12-06 | 2004-06-10 | Jong-Kui Park | Antenna apparatus for mobile communication terminal |
| CN2730078Y (en) * | 2004-07-22 | 2005-09-28 | 嘉联益科技股份有限公司 | Compound multi-layer flexible circuit board structure |
| CN2829230Y (en) * | 2005-07-26 | 2006-10-18 | 达智科技股份有限公司 | Mobile phone with FM antenna |
| CN101060551A (en) * | 2006-04-21 | 2007-10-24 | 上海晨兴电子科技有限公司 | Mobile phone with radio receiving functions |
-
2007
- 2007-11-06 CN CNA2007100478352A patent/CN101431344A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040108959A1 (en) * | 2002-12-06 | 2004-06-10 | Jong-Kui Park | Antenna apparatus for mobile communication terminal |
| CN2730078Y (en) * | 2004-07-22 | 2005-09-28 | 嘉联益科技股份有限公司 | Compound multi-layer flexible circuit board structure |
| CN2829230Y (en) * | 2005-07-26 | 2006-10-18 | 达智科技股份有限公司 | Mobile phone with FM antenna |
| CN101060551A (en) * | 2006-04-21 | 2007-10-24 | 上海晨兴电子科技有限公司 | Mobile phone with radio receiving functions |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106663865A (en) * | 2016-09-27 | 2017-05-10 | 北京小米移动软件有限公司 | Terminal casing and terminal |
| CN109950294A (en) * | 2019-04-10 | 2019-06-28 | 京东方科技集团股份有限公司 | Display panel and display device |
| US11580903B2 (en) | 2019-04-10 | 2023-02-14 | Beijing Boe Display Technology Co., Ltd. | Display panel, and display apparatus and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20090513 |