CN101764280A - Frequency modulation antenna and realization method and mobile terminal thereof - Google Patents
Frequency modulation antenna and realization method and mobile terminal thereof Download PDFInfo
- Publication number
- CN101764280A CN101764280A CN201010132300A CN201010132300A CN101764280A CN 101764280 A CN101764280 A CN 101764280A CN 201010132300 A CN201010132300 A CN 201010132300A CN 201010132300 A CN201010132300 A CN 201010132300A CN 101764280 A CN101764280 A CN 101764280A
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- Prior art keywords
- antenna
- keyboard
- frequency
- connector
- matching network
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
- H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
- H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
Abstract
The invention discloses a frequency modulation antenna, which comprises a keyboard, a connector, a frequency modulation (FM) antenna matching network and an FM receiving chip, wherein the metal support of the keyboard is used as an FM antenna to receive FM frequency band signals; the connector is used to connect the metal support of the keyboard with the feed end of the FM antenna matching network; the FM antenna matching network is connected with the connector through the feed end and is used to adjust the impedance of the metal support in the keyboard to enable the metal support to reach the resonance of the FM frequency band; and the FM receiving chip is used to receive the FM frequency band signals transmitted by the metal support in the keyboard and the FM antenna matching network. The invention additionally discloses a realization method and a mobile terminal for the frequency modulation antenna. By adopting the technical scheme, the invention has the advantages that one FM antenna is saved for the mobile terminal, the cost and the internal space of the mobile terminal are saved, and the loudspeaker function of the frequency modulation radio set is realized.
Description
Technical field
The present invention relates to the frequency-modulated antenna technology, relate in particular to a kind of frequency-modulated antenna device and its implementation and portable terminal.
Background technology
In the prior art, because the portable terminal volume inside is very little, the space of leaving the wiring of frequency modulation (FM) antenna for almost can't reach the resonance of FM frequency range, and therefore, the design of FM antenna just becomes a bigger difficult problem.And along with popularizing of the outer playing function of whole portable terminal industry FM receiver, how also can receive the FM frequency range at portable terminal under without the situation of earphone just becomes the problem that present all big enterprises are all considering.
Application number is that the FM antenna in the described portable terminal of the utility model patent of CN200420034296 is the loop antenna that is made of the shop copper layer on one deck printed circuit board (pcb) at least, has taken the space on the PCB like this; Application number is that the described FM antenna of the utility model patent of CN200720199278.1 is the assembly parts that are fixed on portable terminal mainboard below, sets up separately, can take the inner space of portable terminal to a certain extent, is unfavorable for miniaturization; The described FM antenna of the utility model patent of application number CN200820156635.0 is the antenna implementation method of shielded rack and ceramic antenna combination, except taking up room, has also increased the cost of portable terminal, is unfavorable for manufacturer production.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of frequency-modulated antenna device and its implementation and portable terminal, saving a FM antenna, saving under the prerequisite of mobile terminal cost, has realized the outer playing function of FM receiver.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of frequency-modulated antenna device provided by the invention, this frequency-modulated antenna device comprises: keyboard, connector, FM antenna matching network, FM receiving chip; Wherein,
Metallic support in the keyboard is connected to the feed end of FM antenna matching network by connector; The FM antenna matching network connects the FM receiving chip.
In the such scheme, described keyboard is non-conductive material, and described metallic support is specially the support of steel disc or copper sheet formation.
In the such scheme, described connector is the shell foot or the reed of metal material.
The implementation method of a kind of frequency-modulated antenna provided by the invention, this method comprises:
Metallic support in the keyboard as the FM antenna, is received the FM frequency band signals; Be connected to the feed end of the matching network of FM antenna by connector, the FM frequency band signals is sent to the FM receiving chip.
A kind of portable terminal provided by the invention comprises display screen, power supply, fore shell, back cover, main board, and this portable terminal also comprises the frequency-modulated antenna device, and described frequency-modulated antenna device comprises: keyboard, connector, FM antenna matching network, FM receiving chip; Wherein,
Metallic support in the keyboard is connected to the feed end of FM antenna matching network by connector; The FM antenna matching network connects the FM receiving chip.
A kind of frequency-modulated antenna device provided by the invention and its implementation and portable terminal as the FM antenna, receive the FM frequency band signals with the metallic support in the keyboard of non-conductive material; Be connected to the feed end of the matching network of FM antenna by connector, the FM frequency band signals is sent to the FM receiving chip; Like this, can save a FM antenna, save the cost and the inner space of portable terminal, but also realize the outer playing function of FM receiver.
Description of drawings
Fig. 1 is in order to strengthen toughness adds steel disc in the keyboard of non-conductive material structural representation in the prior art;
Fig. 2 is the structural representation of the frequency-modulated antenna device of the present invention's realization;
Fig. 3 is the structural representation of the metallic support of " S " type cabling among the present invention;
Fig. 4 is the structural representation of shell foot among the present invention as connector;
Fig. 5 realizes the method flow schematic diagram of frequency-modulated antenna for the present invention.
Embodiment
Owing on the structural member of portable terminal a lot of sheet metals are arranged, as: shown in Figure 1 adds metallic supports 211 such as steel disc or copper sheet in order to strengthen toughness in the non-conducting material 11 of keyboard, therefore, in order further to effectively utilize the space of portable terminal, the structural member of portable terminal is carried out the processing and the optimization of certain FM antenna, and carry out certain coupling on the reception link, the receptivity of its FM frequency range still can be received.
Basic thought of the present invention is: the metallic support in the keyboard of non-conductive material as the FM antenna, is received the FM frequency band signals; Be connected to the feed end of the matching network of FM antenna by connector, the FM frequency band signals is sent to the FM receiving chip.
The present invention is described in further detail below by drawings and the specific embodiments.
The present invention has realized a kind of frequency-modulated antenna device, and as shown in Figure 2, this frequency-modulated antenna device comprises: keyboard 21, connector 22, FM antenna matching network 23, FM receiving chip 24; Wherein,
Keyboard 21 is non-conductive material, and as plastics, rubber etc., inside has metallic support 211, and metallic support 211 receives the FM frequency band signals as the FM antenna;
Described metallic support 211 can be the support that steel disc or copper sheet etc. constitute, its cabling form can be " S " type cabling as shown in Figure 3, but satisfy the electrical length requirement of FM antenna, for example: the FM center frequency point is about 100MHz, corresponding wavelength is about 3m, quarter-wave is exactly 75cm, if the dielectric constant of the non-conducting material of keyboard 21 is 1, track lengths preferably will reach 75cm so, if the dielectric constant of the non-conducting material of keyboard 21 is 4, track lengths preferably will reach 37.5cm so, if the dielectric constant of the non-conducting material of keyboard 21 is 9, track lengths preferably will reach 25cm so, and promptly the subduplicate value of the dielectric constant of the non-conducting material of track lengths and keyboard 21 is inversely proportional to; But generally for the intensity of metallic support 211, that the cabling of metallic support 211 can not done is very thin, and track lengths will not reach optimum value, like this, best track lengths be dwindled certain ratio, be fine yet; In addition, the connector 22 that can utilize metallic support with keyboard 21 to be connected to FM antenna matching network 23 remedies the deficiency of track lengths;
Connector 22 is used for the metallic support 211 of keyboard 21 is connected to the feed end of FM antenna matching network 23;
Described connector 22 is a metal material, can be shell foot or reed etc., and connector 22 as shown in Figure 4 is a shell foot;
FM antenna matching network 23 is used for being connected with connector 22 by feed end, regulates the impedance of metallic support in the keyboard 21, makes metallic support 211 can reach the resonance of FM frequency range;
FM receiving chip 24 is used for receiving the metallic support of keyboard 21 and the FM frequency band signals that FM antenna matching network 23 sends;
Further, described frequency-modulated antenna device further comprises the ground of mainboard, the ground of the mainboard of keyboard 21 belows can be scraped out headroom, makes the form of unipole antenna (Monopole Antenna); The form of pico farad antenna (PIFA) is made on the ground that also can keep the mainboard of keyboard 21 belows; Can also dig up part or all of ground of the mainboard of keyboard 21 belows, make the form of inverse-F antenna (IFA).
Based on above-mentioned frequency-modulated antenna device, the present invention also provides a kind of implementation method of frequency-modulated antenna, and as shown in Figure 5, this method comprises following step:
Step 501: the metallic support in the keyboard of non-conductive material as the FM antenna, is received the FM frequency band signals;
Described metallic support can be the support that steel disc or copper sheet etc. constitute, its cabling form can be " S " type cabling as shown in Figure 3, but satisfy the electrical length requirement of FM antenna, for example: the FM center frequency point is about 100MHz, corresponding wavelength is about 3m, quarter-wave is exactly 75cm, if the dielectric constant of the non-conducting material of keyboard is 1, track lengths preferably will reach 75cm so, if the dielectric constant of the non-conducting material of keyboard is 4, track lengths preferably will reach 37.5cm so, if the dielectric constant of the non-conducting material of keyboard is 9, track lengths preferably will reach 25cm so, and promptly the subduplicate value of the dielectric constant of the non-conducting material of track lengths and keyboard is inversely proportional to; But generally for the intensity of metallic support, that the cabling of metallic support can not done is very thin, and track lengths will not reach optimum value, like this, best track lengths be dwindled certain ratio, be fine yet; In addition, the connector that can utilize metallic support with keyboard to be connected to the FM antenna matching network remedies the deficiency of track lengths;
Step 502: be connected to the feed end of the matching network of FM antenna by connector, the FM frequency band signals is sent to the FM receiving chip;
Concrete, shell foot by metal material or reed etc. are connected the feed end of the metallic support in the keyboard with the matching network of FM antenna, regulate the impedance of described metallic support by described matching network, make described metallic support can reach the resonance of FM frequency range, thereby, can the FM frequency band signals be sent to the FM receiving chip by metallic support in the described keyboard and matching network.
Further, this method also comprises: the ground of the mainboard below the described keyboard can be scraped out headroom, make the form of unipole antenna; The form of pico farad antenna is made on the ground that also can keep the mainboard of described keyboard below; Can also dig up part or all of ground of the mainboard of described keyboard below, make the form of inverse-F antenna.
Based on above-mentioned scheme, the present invention also provides a kind of portable terminal, this portable terminal not only comprises parts such as display screen, power supply, fore shell, back cover, mainboard, also comprise: the frequency-modulated antenna device, as shown in Figure 2, this frequency-modulated antenna device comprises: keyboard 21, connector 22, FM antenna matching network 23, FM receiving chip 24; Wherein,
Keyboard 21 is non-conductive material, and as plastics, rubber etc., inside has metallic support 211, and metallic support 211 receives the FM frequency band signals as the FM antenna;
Described metallic support 211 can be the support that steel disc or copper sheet etc. constitute, its cabling form can be " S " type cabling as shown in Figure 3, but satisfy the electrical length requirement of FM antenna, for example: the FM center frequency point is about 100MHz, corresponding wavelength is about 3m, quarter-wave is exactly 75cm, if the dielectric constant of the non-conducting material of keyboard 21 is 1, track lengths preferably will reach 75cm so, if the dielectric constant of the non-conducting material of keyboard 21 is 4, track lengths preferably will reach 37.5cm so, if the dielectric constant of the non-conducting material of keyboard 21 is 9, track lengths preferably will reach 25cm so, and promptly the subduplicate value of the dielectric constant of the non-conducting material of track lengths and keyboard 21 is inversely proportional to; But generally for the intensity of metallic support 211, that the cabling of metallic support 211 can not done is very thin, and track lengths will not reach optimum value, like this, best track lengths be dwindled certain ratio, be fine yet; In addition, the connector 22 that can utilize metallic support 211 with keyboard 21 to be connected to FM antenna matching network 23 remedies the deficiency of track lengths;
Connector 22 is used for the metallic support 211 of keyboard 21 is connected to the feed end of FM antenna matching network 23;
Described connector 22 is a metal material, can be shell foot or reed etc.;
FM antenna matching network 23 is used for being connected with connector 22 by feed end, regulates the impedance of metallic support 211 in the keyboard 21, makes metallic support 211 can reach the resonance of FM frequency range;
FM receiving chip 24 is used for receiving the metallic support 211 of keyboard 21 and the FM frequency band signals that FM antenna matching network 23 sends;
Further, described frequency-modulated antenna device further comprises the ground of mainboard, the ground of the mainboard of keyboard 21 belows can be scraped out headroom, makes the form of unipole antenna; The form of pico farad antenna is made on the ground that can keep the mainboard of keyboard 21 belows; Also can dig up part or all of ground of the mainboard of keyboard 21 belows, make the form of inverse-F antenna.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a frequency-modulated antenna device is characterized in that, this frequency-modulated antenna device comprises: keyboard, connector, frequency modulation (FM) antenna matching network, FM receiving chip; Wherein,
Metallic support in the keyboard is connected to the feed end of FM antenna matching network by connector; The FM antenna matching network connects the FM receiving chip.
2. frequency-modulated antenna device according to claim 1 is characterized in that, described keyboard is non-conductive material, and described metallic support is specially the support of steel disc or copper sheet formation.
3. frequency-modulated antenna device according to claim 1 is characterized in that, described connector is the shell foot or the reed of metal material.
4. the implementation method of a frequency-modulated antenna is characterized in that, this method comprises:
Metallic support in the keyboard as the FM antenna, is received the FM frequency band signals; Be connected to the feed end of the matching network of FM antenna by connector, the FM frequency band signals is sent to the FM receiving chip.
5. implementation method according to claim 4 is characterized in that, described keyboard is non-conductive material, and described metallic support is the support that steel disc or copper sheet constitute.
6. implementation method according to claim 4 is characterized in that, described connector is the shell foot or the reed of metal material.
7. a portable terminal comprises display screen, power supply, fore shell, back cover, main board, it is characterized in that, this portable terminal also comprises the frequency-modulated antenna device, and described frequency-modulated antenna device comprises: keyboard, connector, FM antenna matching network, FM receiving chip; Wherein,
Metallic support in the keyboard is connected to the feed end of FM antenna matching network by connector; The FM antenna matching network connects the FM receiving chip.
8. portable terminal according to claim 7 is characterized in that, described keyboard is non-conductive material, and described metallic support is the support that steel disc or copper sheet constitute.
9. portable terminal according to claim 7 is characterized in that, described connector is the shell foot or the reed of metal material.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010132300A CN101764280A (en) | 2010-03-16 | 2010-03-16 | Frequency modulation antenna and realization method and mobile terminal thereof |
| PCT/CN2010/073632 WO2011113230A1 (en) | 2010-03-16 | 2010-06-07 | Frequency-modulation antenna device, implementation method thereof and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010132300A CN101764280A (en) | 2010-03-16 | 2010-03-16 | Frequency modulation antenna and realization method and mobile terminal thereof |
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| CN101764280A true CN101764280A (en) | 2010-06-30 |
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| CN201010132300A Pending CN101764280A (en) | 2010-03-16 | 2010-03-16 | Frequency modulation antenna and realization method and mobile terminal thereof |
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| WO (1) | WO2011113230A1 (en) |
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| CN101901961A (en) * | 2010-07-01 | 2010-12-01 | 中兴通讯股份有限公司 | Device for receiving signals, antenna device and mobile terminal |
| CN102014180A (en) * | 2010-11-24 | 2011-04-13 | 惠州Tcl移动通信有限公司 | Built-in FM antenna realization method and mobile phone using same |
| CN102148422A (en) * | 2011-02-23 | 2011-08-10 | 中兴通讯股份有限公司 | Frequency-modulated antenna realization device and mobile terminal |
| CN102202111A (en) * | 2010-07-30 | 2011-09-28 | 惠州Tcl移动通信有限公司 | Mobile terminal and frequency modulation antenna device thereof |
| WO2012055202A1 (en) * | 2010-10-28 | 2012-05-03 | 中兴通讯股份有限公司 | Device and method in which radio frequency antenna is also used as fm antenna |
| CN102637946A (en) * | 2011-02-14 | 2012-08-15 | 中兴通讯股份有限公司 | Frequency modulation (FM) antenna implementation device and mobile terminal |
| WO2012109899A1 (en) * | 2011-02-18 | 2012-08-23 | 中兴通讯股份有限公司 | Mobile terminal |
| CN103135673A (en) * | 2011-11-28 | 2013-06-05 | 联想(北京)有限公司 | Information processing equipment and method of processing surface of metal frame thereof |
| CN103165982A (en) * | 2013-03-29 | 2013-06-19 | 华为终端有限公司 | Wireless communication equipment |
| CN106330246A (en) * | 2016-08-17 | 2017-01-11 | 珠海格力电器股份有限公司 | Antenna switching method, circuit and device, and mobile communication terminal |
| CN108183719A (en) * | 2017-12-28 | 2018-06-19 | 上海展扬通信技术有限公司 | Antenna circuit and modulating FM Signal Regulation method |
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| US9026073B2 (en) | 2010-07-01 | 2015-05-05 | Zte Corporation | Device for receiving signals, antenna device and mobile terminal |
| WO2012000231A1 (en) * | 2010-07-01 | 2012-01-05 | 中兴通讯股份有限公司 | Device for receiving signals, antenna device and mobile terminal |
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| CN102637946A (en) * | 2011-02-14 | 2012-08-15 | 中兴通讯股份有限公司 | Frequency modulation (FM) antenna implementation device and mobile terminal |
| WO2012109814A1 (en) * | 2011-02-14 | 2012-08-23 | 中兴通讯股份有限公司 | Frequency modulation antenna realization device and mobile terminal |
| WO2012109899A1 (en) * | 2011-02-18 | 2012-08-23 | 中兴通讯股份有限公司 | Mobile terminal |
| WO2012113171A1 (en) * | 2011-02-23 | 2012-08-30 | 中兴通讯股份有限公司 | Frequency modulation antenna realization device and mobile terminal |
| CN102148422A (en) * | 2011-02-23 | 2011-08-10 | 中兴通讯股份有限公司 | Frequency-modulated antenna realization device and mobile terminal |
| CN103135673A (en) * | 2011-11-28 | 2013-06-05 | 联想(北京)有限公司 | Information processing equipment and method of processing surface of metal frame thereof |
| CN103135673B (en) * | 2011-11-28 | 2017-07-21 | 联想(北京)有限公司 | Message processing device and the method handled its metal edge frame surface |
| CN103165982A (en) * | 2013-03-29 | 2013-06-19 | 华为终端有限公司 | Wireless communication equipment |
| CN106330246A (en) * | 2016-08-17 | 2017-01-11 | 珠海格力电器股份有限公司 | Antenna switching method, circuit and device, and mobile communication terminal |
| CN106330246B (en) * | 2016-08-17 | 2019-06-25 | 珠海格力电器股份有限公司 | A kind of antenna switching method, circuit, device and communication terminal |
| CN108183719A (en) * | 2017-12-28 | 2018-06-19 | 上海展扬通信技术有限公司 | Antenna circuit and modulating FM Signal Regulation method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011113230A1 (en) | 2011-09-22 |
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Application publication date: 20100630 |