CN101119124A - Method and device for implementing frequency modulation antenna of mobile terminal - Google Patents
Method and device for implementing frequency modulation antenna of mobile terminal Download PDFInfo
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- CN101119124A CN101119124A CNA2007100766311A CN200710076631A CN101119124A CN 101119124 A CN101119124 A CN 101119124A CN A2007100766311 A CNA2007100766311 A CN A2007100766311A CN 200710076631 A CN200710076631 A CN 200710076631A CN 101119124 A CN101119124 A CN 101119124A
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Abstract
The invention discloses a method and a device for realizing a mobile terminal frequency modulation antenna. The method contains the following steps: a frequency modulation RF coupling circuit on a mobile terminal stand type charger couples the received frequency modulation RF signals on the charging circuit of the stand type charger and is transmitted together with power source signals; the charging power source signal and the frequency modulation RF signal is transmitted to the mobile terminal through the electrically connected transmission line which is positioned between the power supply reed of the stand type charger and the power supply reed of the mobile terminal; and the frequency modulation RF signal separation circuit on the mobile terminal separates the frequency modulation RF signals transmitted by the electrically connected transmission line from the power source signals and transmits the separated frequency modulation RF signals to the tuning demodulation circuit on the mobile terminal which processes and tunes the frequency modulation RF signals into voice signals. The invention utilizes the mobile terminal stand type charger to realize mobile terminal frequency modulation antenna receive, thus the structure of the mobile terminal is simpler and agiler.
Description
Technical field
The present invention relates to the communication of mobile terminal technical field, especially a kind of method and device thereof of realizing frequency modulation antenna of mobile terminal.
Background technology
A lot of mobile terminal devices all require to realize the FM FM receiver function, realize that it is exactly the FM antenna part that this function has a crucial part, because FM modulation frequency scope is 88MHz～108MHz, its 1/4 wave-length coverage 0.69m～0.85m, the size of antenna and this require quite, general portable terminal all is far smaller than this size, realizes on mobile terminal device that therefore the modulating FM antenna is the difficult problem of puzzlement industry always.
The implementation that realizes the FM antenna at present on terminal equipment has following several:
Pass through earphone: generally all be equipped with earphone on the mobile terminal device, earphone from the main frame plug to one section long lead is arranged the Receiver, this section lead is used for transmitting audio signal, also can be used as simultaneously the FM antenna, but adopt this method to require the use that when realizing the FM function, must plug in the earphone, especially the portable terminal that has hand-free function, plugging in the earphone, it is very inconvenient to use.
By microphone handle line: some FWP equipment is not equipped with ear-phone function, can only realize antenna function by the line of microphone handle, then can't adopt this method for the hand free device that is not equipped with the microphone handle.
Main frame telescopic antenna: realize that by the flexible examination telescopic antenna that is installed on the mobile terminal host this antenna is because the restriction of terminal contour and attractive in appearance etc. certain limitation arranged.
The PCB antenna: also have the antenna of realizing by one section cabling by on the PCB of mobile terminal device circuit main board, because the receiving gain of this antenna of restriction of bulk is very low, reception is poor.
Therefore, prior art awaits improving and development.
Summary of the invention
The objective of the invention is to utilize the seat formula charger of mobile terminal device to realize the apparatus and method of FM antenna, solve the problem of using the FM antenna to insert on the present formula charger of portable terminal, the solution of the FM antenna under the hands-free state of portable terminal is provided simultaneously.
In order to solve above-mentioned purpose, the invention provides a kind of method that realizes frequency modulation antenna of mobile terminal, comprise the steps:
The RF-coupled circuit of frequency modulation on A, the portable terminal seat formula charger is coupled on the formula charger charging circuit after with the frequency modulation radiofrequency signal that receives, and realizes the compound of described frequency modulation radiofrequency signal and power supply signal, and transmits with the power supply signal path;
B, seat formula charger power supply reed and portable terminal power set up between the reed charge power supply signal and frequency modulation radiofrequency signal common be electrically connected transmission line, and described charge power supply signal and frequency modulation radiofrequency signal are transferred on the portable terminal by this electrical connection transmission line;
Frequency modulation radiofrequency signal split circuit on C, the described portable terminal separates the described frequency modulation radiofrequency signal that described electrical connection transmission line sends with power supply signal, and the described frequency modulation radiofrequency signal after will separating is delivered to a tuning demodulator circuit that is arranged on the described portable terminal and carries out the processing of frequency modulation radiofrequency signal, and is demodulated into audio signal.
Wherein, among the described step B, the RF-coupled circuit of described frequency modulation also comprises one first coupling capacitance circuit, is arranged on the signal input part of the RF-coupled circuit of this frequency modulation, is used to separate AC signal, intercepts direct current signal; And one first high frequency choke inductive circuit, be connected with the described first coupling capacitance circuit, be used to intercept high frequency ac signal, isolate the frequency modulation radiofrequency signal.
Wherein, among the described step C, described frequency modulation radio frequency split circuit also comprises one second high frequency choke inductive circuit, is arranged on the signal input part of this frequency modulation radio frequency split circuit, is used for preventing that the frequency modulation radiofrequency signal from leaking into described portable terminal power-supply system; Reach one second coupling capacitance circuit, be arranged on the signal output part of described frequency modulation radio frequency split circuit, be used to separate AC signal, intercept direct current signal.
The present invention also provides a kind of device of realizing frequency modulation antenna of mobile terminal, comprising:
The RF-coupled circuit of one frequency modulation, be arranged on the mainboard of a portable terminal left side, is connected with a receiver and a seat formula charger power supply reed that is arranged on the described seat formula charger, is used to finish coupling between a described frequency modulation radiofrequency signal and the formula charger charge power supply and multiplexing;
One frequency modulation radio frequency split circuit is arranged on the portable terminal mainboard, is connected with portable terminal power supply reed, is used to finish portable terminal and powers separating between the frequency modulation radiofrequency signal that receives on the reed and the charge power supply;
One tuning demodulator circuit is connected with described frequency modulation radio frequency split circuit, is used to receive and the frequency modulation radiofrequency signal separated of the described frequency modulation radio frequency of demodulation split circuit, and is converted into voice signal;
Described portable terminal power supply reed and the suitable setting of described seat formula charger power supply reed.
Wherein, described device also comprises an audio playing module, is arranged on the described portable terminal, is connected with described tuning demodulator circuit and loud speaker, be used for described voice signal is converted into audio signal, and by described loudspeaker plays.
Wherein, described device also comprises a receiving key, is arranged on described audio playing module signal output part, is used to control the output of described audio signal.
Wherein, described device also comprises a receiver, is arranged on the described portable terminal seat formula charger, is connected with the RF-coupled circuit of described frequency modulation, is used to receive described frequency modulation radiofrequency signal; This receiver is a telescopic antenna.
Compared with prior art, the present invention utilizes portable terminal seat formula charger to realize the frequency modulation antenna of mobile terminal reception, the structural design that makes portable terminal is simple more, flexibly, and portable terminal itself need not auxiliary equipment such as plug-in earphone as frequency-modulated antenna when realizing hand-free function; Simultaneously, the present invention has also solved at the power circuit transmitting radio frequency signal, and realized between frequency modulation radiofrequency signal and the power supply signal compound with separate.
Description of drawings
Fig. 1 is the realization flow figure of frequency-modulated antenna method of the present invention;
Fig. 2 is the block diagram of frequency-modulated antenna device of the present invention.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in further detail.
Design principle of the present invention: utilize existing portable terminal and portable terminal seat formula charger, as shown in Figure 2, at the inner RF-coupled circuit of a frequency modulation that increases of described portable terminal seat formula charger, is connected with a receiver and a seat formula charger power supply reed that is arranged on the described seat formula charger, is used to finish coupling between a described frequency modulation radiofrequency signal and the formula charger charge power supply and multiplexing; Simultaneously, set up a frequency modulation radio frequency split circuit in described portable terminal inside, is connected, be used to finish portable terminal and power separating between the frequency modulation radiofrequency signal that receives on the reed and the charge power supply with portable terminal power supply reed.When described portable terminal is placed on the described seat formula charger, the RF-coupled circuit of described frequency modulation is coupled to the frequency modulation radiofrequency signal that receives in the formula charger charging circuit, and described frequency modulation radiofrequency signal is delivered to described frequency modulation radio frequency split circuit via the charging circuit at seat formula charger power supply reed and portable terminal power supply reed place, tuning demodulator circuit is separated and be delivered to described frequency modulation radiofrequency signal carry out tuning demodulation, and this modulation signal of demodulation is a voice signal, by loudspeaker plays, thus the function of realization frequency modulation antenna of mobile terminal.
See also accompanying drawing 1, the invention provides a kind of method that realizes frequency modulation antenna of mobile terminal, its process step is as follows:
110, being arranged on receiver on the portable terminal seat formula charger, is a telescopic antenna in the present embodiment, receives frequency modulation (FM) radiofrequency signal, and this FM radiofrequency signal is delivered to the RF-coupled circuit of FM;
120, the RF-coupled circuit of the described FM described FM radiofrequency signal that will receive is coupled on the formula charger charging circuit, realizes the compound of described frequency modulation radiofrequency signal and power supply signal, and transmits with the power supply signal path;
130, the charge power supply signal on the seat formula charger and frequency modulation radiofrequency signal are transferred on the portable terminal by seat formula charger power supply reed and the portable terminal transmission line of setting up between the reed that is electrically connected of powering;
140, the frequency modulation radiofrequency signal split circuit on the described portable terminal separates the described frequency modulation radiofrequency signal that described electrical connection transmission line sends with power supply signal, and the described frequency modulation radiofrequency signal after will separating is delivered to a tuning demodulator circuit that is arranged on the described portable terminal, and is demodulated into audio signal and is delivered to audio playing module;
150, described audio playing module receives described audio signal and is delivered to a loudspeaker plays that is arranged on the described portable terminal.
Wherein, in the described step 120, comprise the first coupling capacitance circuit and the first high frequency choke inductive circuit in the RF-coupled circuit of described frequency modulation; The described first coupling capacitance circuit is arranged on the signal input part of the RF-coupled circuit of described frequency modulation, is used to separate AC signal, intercepts direct current signal; First high frequency is gripped the signal output part that the inductive circuit piece is arranged on the RF-coupled circuit of described frequency modulation, is used to intercept high frequency ac signal, isolates the frequency modulation radiofrequency signal.
Wherein, in the described step 140, described frequency modulation radio frequency split circuit also comprises the second coupling capacitance circuit and the second high frequency choke inductive circuit; The described second coupling capacitance circuit is located at the signal input part of this frequency modulation radio frequency split circuit, is used to separate AC signal, intercepts direct current signal; The described second high frequency choke inductive circuit is connected with described second coupling capacitance circuit and described tuning demodulator circuit, is used for preventing that the frequency modulation radiofrequency signal from leaking into described portable terminal power-supply system.
A kind of device of realizing frequency modulation antenna of mobile terminal as shown in Figure 2, comprises portable terminal and portable terminal seat formula charger; Wherein, described portable terminal seat formula charger comprises telescopic antenna, the RF-coupled circuit of frequency modulation and seat formula charger power supply reed, and the signal input part of the RF-coupled circuit of described frequency modulation is connected with the bottom of described telescopic antenna, its signal output part is connected with described seat formula charger power supply reed, and the FM radiofrequency signal that is used for receiving is coupled to a formula charger charging circuit; Described portable terminal comprises portable terminal power supply reed, frequency modulation radio frequency split circuit and tuning demodulator circuit, and the signal input part of described frequency modulation radio frequency split circuit and the described portable terminal reed of powering is connected, and signal output part is connected with tuning demodulator circuit; Simultaneously, described portable terminal power supply reed and the suitable setting of described seat 0 formula charger power supply reed, set up one between the two and be electrically connected transmission line, be used for described charge power supply signal and FM radiofrequency signal are transferred to portable terminal by this electrical connection transmission line.
Wherein, the RF-coupled circuit of described frequency modulation is to be used to finish coupling between described FM radiofrequency signal and the seat formula charger charge power supply signal and multiplexing.When described telescopic antenna is delivered to the RF-coupled circuit of described frequency modulation with the FM radiofrequency signal that receives, and, realize that electric capacity is every after the straight function this FM radio frequency AC signal being coupled on the formula charger power cord road by the first coupling capacitance circuit on the RF-coupled circuit of described frequency modulation; Described FM radio frequency AC signal realizes the perfectly straight stream of resistance high frequency via the first high frequency choke inductive circuit on the RF-coupled circuit of described frequency modulation, prevents that the FM radiofrequency signal from leaking in the power-supply system.Guarantee that the FM radiofrequency signal can only be along supply line's transmission of seat formula charger power supply reed behind the RF-coupled circuit of described FM, and avoid the FM radiofrequency signal to have influence on other circuit of a formula charger.
Wherein, described frequency modulation radio frequency split circuit is to be used to finish separating between the charge power supply signal on described FM radiofrequency signal and the portable terminal.When portable terminal power supply reed receives after described seat formula charger power supply reed carries the FM radiofrequency signal of coming, described FM radiofrequency signal is by the second high frequency choke inductive circuit, realize the perfectly straight stream of resistance high frequency, prevent that the FM radiofrequency signal from leaking in the portable terminal power-supply system, avoid the FM radiofrequency signal to have influence on other circuit of portable terminal; Simultaneously, described FM radiofrequency signal realizes that by the second coupling capacitance circuit on the described frequency modulation radio frequency split circuit electric capacity is coupled on the tuning demodulator circuit after straight.
Wherein, described tuning demodulator circuit is used for receiving and the described FM radiofrequency signal of demodulation, and is demodulated into audio signal.This tuning demodulator circuit comprises receiving element and demodulation module, and the signal input part of described receiving element is connected with the signal output part of frequency modulation radio frequency split circuit, and the signal output part of this receiving element is connected with the signal input part of described demodulation module.Described receiving element is used to receive the FM radiofrequency signal that described tuning demodulator circuit transports, and this signal is outputed to described demodulation module, and carrying out tuning demodulation process by described demodulation module is audio signal, send loudspeaker plays.
Wherein, described device also comprises an audio playing module, as shown in Figure 2, is arranged on the described portable terminal, is connected with described tuning demodulator circuit and loud speaker, be used for described voice signal is converted into audio signal, and by described loudspeaker plays.
Wherein, described device also comprises a receiving key, as shown in Figure 2, is arranged on described audio playing module signal output part, is used to control the output of described audio signal.
In sum, the present invention is by setting up the RF-coupled circuit of a frequency modulation on portable terminal seat formula charger, the frequency modulation radiofrequency signal is coupled on the formula charger charging circuit, and be delivered on the portable terminal power circuit by seat formula charger power supply reed and the portable terminal reed of powering, and the frequency modulation radiofrequency signal is separated, and this frequency modulation radiofrequency signal is delivered to carry out tuning demodulation process on the tuning demodulator circuit that is arranged on the portable terminal be audio signal by a frequency modulation radio frequency split circuit that is arranged on the portable terminal power circuit.This set of the present invention, the structural design that makes portable terminal be simple more, flexibly, and portable terminal itself need not auxiliary equipment such as plug-in earphone as frequency-modulated antenna when realizing hand-free function; Simultaneously, the present invention has also solved at the power circuit transmitting radio frequency signal, and realized between frequency modulation radiofrequency signal and the power supply signal compound with separate.
In a word, the present invention is not limited to above-mentioned execution mode, anyly is familiar with this operator, without departing from the spirit and scope of the present invention, all should drop within protection scope of the present invention.
Claims (8)
1. method that realizes frequency modulation antenna of mobile terminal, this method comprises the steps:
The RF-coupled circuit of frequency modulation on A, the portable terminal seat formula charger is coupled on the formula charger charging circuit after with the frequency modulation radiofrequency signal that receives, and realizes the compound of described frequency modulation radiofrequency signal and power supply signal, and transmits with the power supply signal path; Below and the full name that all please indicate " seat formula charger " in the specification, thanks!
B, seat formula charger power supply reed and portable terminal power set up between the reed charge power supply signal and frequency modulation radiofrequency signal common be electrically connected transmission line, described frequency modulation radiofrequency signal is transferred on the portable terminal by this electrical connection transmission line;
Frequency modulation radiofrequency signal split circuit on C, the described portable terminal separates the described frequency modulation radiofrequency signal that described electrical connection transmission line sends with power supply signal, and the described frequency modulation radiofrequency signal after will separating is delivered to a tuning demodulator circuit that is arranged on the described portable terminal and carries out the processing of frequency modulation radiofrequency signal, and is demodulated into audio signal.
2. method according to claim 1, it is characterized in that in the described steps A, the RF-coupled circuit of described frequency modulation also comprises one first coupling capacitance circuit, be arranged on the signal input part of the RF-coupled circuit of this frequency modulation, be used to separate AC signal, intercept direct current signal; And one first high frequency choke inductive circuit, be connected with the described first coupling capacitance circuit, be used to intercept high frequency ac signal, isolate the frequency modulation radiofrequency signal.
3. method according to claim 1, it is characterized in that, among the described step C, described frequency modulation radio frequency split circuit also comprises one second high frequency choke inductive circuit, be arranged on the signal input part of this frequency modulation radio frequency split circuit, be used for preventing that the frequency modulation radiofrequency signal from leaking into described portable terminal power-supply system; Reach one second coupling capacitance circuit, be arranged on the signal output part of this frequency modulation radio frequency split circuit, be used to separate AC signal, intercept direct current signal.
4. a device of realizing frequency modulation antenna of mobile terminal is characterized in that, described device comprises:
The RF-coupled circuit of one frequency modulation, be arranged on the mainboard of a portable terminal left side, is connected with a receiver and a seat formula charger power supply reed that is arranged on the described seat formula charger, is used to finish coupling between a described frequency modulation radiofrequency signal and the formula charger charge power supply and multiplexing;
One frequency modulation radio frequency split circuit is arranged on the portable terminal mainboard, is connected with portable terminal power supply reed, is used to finish portable terminal and powers separating between the frequency modulation radiofrequency signal that receives on the reed and the charge power supply;
One tuning demodulator circuit is connected with described frequency modulation radio frequency split circuit, is used to receive and the frequency modulation radiofrequency signal separated of the described frequency modulation radio frequency of demodulation split circuit, and is converted into voice signal;
Described portable terminal power supply reed and the suitable setting of described seat formula charger power supply reed.
5. device according to claim 4 is characterized in that described device also comprises an audio playing module, be arranged on the described portable terminal, be connected with described tuning demodulator circuit and loud speaker, be used for described voice signal is converted into audio signal, and by described loudspeaker plays.
6. device according to claim 5 is characterized in that described device also comprises a receiving key, is arranged on described audio playing module signal output part, is used to control the output of described audio signal.
7. according to the arbitrary described device of claim 4 to 6, it is characterized in that described device also comprises a receiver, be arranged on the described portable terminal seat formula charger, be connected, be used to receive described frequency modulation radiofrequency signal with the RF-coupled circuit of described frequency modulation.
8. device according to claim 7 is characterized in that, described receiver is a telescopic antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100766311A CN101119124A (en) | 2007-08-22 | 2007-08-22 | Method and device for implementing frequency modulation antenna of mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100766311A CN101119124A (en) | 2007-08-22 | 2007-08-22 | Method and device for implementing frequency modulation antenna of mobile terminal |
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| Publication Number | Publication Date |
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| CN101119124A true CN101119124A (en) | 2008-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007100766311A Pending CN101119124A (en) | 2007-08-22 | 2007-08-22 | Method and device for implementing frequency modulation antenna of mobile terminal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113452398A (en) * | 2020-03-27 | 2021-09-28 | 成都鼎桥通信技术有限公司 | Method for improving wireless performance of terminal |
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- 2007-08-22 CN CNA2007100766311A patent/CN101119124A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113452398A (en) * | 2020-03-27 | 2021-09-28 | 成都鼎桥通信技术有限公司 | Method for improving wireless performance of terminal |
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Open date: 20080206 |