CN201947344U - Mobile phone with frequency modulation (FM) reception function - Google Patents
Mobile phone with frequency modulation (FM) reception function Download PDFInfo
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- CN201947344U CN201947344U CN201020675276.7U CN201020675276U CN201947344U CN 201947344 U CN201947344 U CN 201947344U CN 201020675276 U CN201020675276 U CN 201020675276U CN 201947344 U CN201947344 U CN 201947344U
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Abstract
The utility model discloses a mobile phone with a frequency modulation (FM) reception function, which comprises a mobile-phone communication antenna and a mobile-phone communication circuit, and further comprises a signal power-dividing circuit, an FM antenna matching circuit and an FM receiving circuit. The signal power-dividing circuit, the FM antenna matching circuit and the FM receiving circuit are sequentially connected, and the signal power-dividing circuit is respectively connected with the mobile-phone communication antenna and the mobile-phone communication circuit simultaneously. The mobile phone with the FM reception function utilizes an existing mobile-phone communication antenna to simultaneously receive FM broadcast signals and mobile-phone communication signals, and realizes the FM reception function through the newly added signal power-dividing circuit, the FM antenna matching circuit, an FM frequency-range band rejection filter and the like on the premise that the basic communication functions of the mobile phone are not affected. Accordingly, users no longer rely on earphone leads when listening to the FM broadcast, and the FM reception function is easy to realize.
Description
Technical field
The utility model relates to a kind of mobile phone, relates in particular to a kind of mobile phone of the FM of having function of radio receiver.
Background technology
At present; FM broadcasts every nook and cranny covering the whole world; increasing mobile phone has possessed the FM function of radio receiver; communication frequency is much lower because the FM broadcasting frequency relatively moves; the design of FM reception antenna is difficult in mobile phone and realizes; mainstream solution is to adopt the handset earphone lead-in wire as the FM reception antenna at present; there is following defective in this scheme: because with the reception antenna of handset earphone lead-in wire as the FM broadcast singal; so the prerequisite the when user can listen to FM broadcasting is to be furnished with earphone; yet earphone during as Cellphone Accessories regular meeting lose damage, make the user just can't listen to FM broadcasting when not having earphone or earphone lost/damaged like this.
Summary of the invention
The technical problems to be solved in the utility model is to adopt the handset earphone lead-in wire as the existing defective of FM broadcast singal reception antenna at prior art, and a kind of mobile communication terminal is provided, and realizes not needing earphone also can realize the FM function of radio receiver.
The technical scheme that its technical problem that solves the utility model adopts is.
A kind of mobile phone with FM function of radio receiver, comprise mobile communication antenna and mobile communication circuit, also comprise the signal merit parallel circuit in order to received FM broadcast singal of separation mobile phone communication antenna and mobile communication signal, FM antenna-matching circuit and FM radio reception circuit in order to realize that FM radio reception circuit and mobile communication antenna are complementary;
Described signal merit parallel circuit, FM antenna-matching circuit and FM radio reception circuit are connected successively, and described signal merit parallel circuit is connected respectively with the mobile communication circuit with the mobile communication antenna simultaneously.
Wherein, also comprise the FM frequency range band stop filter that is used to stop received FM broadcast singal of mobile communication antenna and ground short circuit, this FM frequency range band stop filter is connected with described mobile communication antenna.
Wherein, described FM frequency range band stop filter is made up of four electric capacity and an inductance of parallel connection and ground connection.
The beneficial effects of the utility model are:
The utility model utilizes existing mobile communication antenna to receive FM broadcast singal and mobile communication signal simultaneously, and under the prerequisite that does not influence the mobile phone basic communication functions, realized the FM function of radio receiver by newly-increased signal merit parallel circuit, FM antenna-matching circuit and FM frequency range band stop filter or the like, the user is no longer dependent on earphone wire when listening to FM broadcasting like this, and is easy to realize.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
The theory diagram of the FM function of radio receiver part of the mobile phone of the use PF antenna that Fig. 1 provides for the utility model embodiment one.
The specific implementation circuit diagram of the FM function of radio receiver part of the mobile phone of the use PF antenna that Fig. 2 provides for the utility model embodiment one.
The theory diagram of the FM function of radio receiver part of the mobile phone of the use monopole antenna that Fig. 3 provides for the utility model embodiment two.
The specific implementation circuit diagram of the FM function of radio receiver part of the mobile phone of the use monopole antenna that Fig. 4 provides for the utility model embodiment two.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Embodiment one.
See also Fig. 1, mobile phone comprises in the present embodiment: mobile communication antenna, mobile communication circuit, signal merit parallel circuit, FM antenna-matching circuit, FM radio reception circuit and FM frequency range band stop filter.
Wherein, the mobile communication antenna adopts the PF antenna, is used to receive FM broadcast singal and mobile communication signal.
Signal merit parallel circuit, be connected respectively with mobile communication antenna, mobile communication circuit, FM antenna-matching circuit simultaneously, in order to separate FM broadcast singal and mobile communication signal, the FM broadcast singal is sent to FM radio reception circuit by the FM antenna-matching circuit, the mobile communication signal is sent to the mobile communication circuit.
The FM antenna-matching circuit is connected with signal merit parallel circuit, is used to realize that mobile communication antenna and FM radio reception circuit are complementary, and makes the received FM broadcast singal of mobile communication antenna all enter FM radio reception circuit; Because present mobile communication antenna all designs at the mobile communication circuit, can and the serious mismatch of FM radio reception circuit, thereby need to set up the FM antenna-matching circuit herein and realize both couplings.
FM radio reception circuit is connected with the FM antenna-matching circuit, plays received FM broadcast singal.
FM frequency range band stop filter, be connected with the mobile communication antenna, because feedback point in the ground of PF antenna can make the FM broadcast singal of mobile communication antenna be shorted to ground, thereby adopts FM frequency range band stop filter to stop the short circuit of FM broadcast singal in the present embodiment, and do not influence the communication grounding function.
In the present embodiment, three of signal merit parallel circuit, FM antenna-matching circuit and FM frequency range band stop filters independently part also can be integrated.
See also Fig. 2, this figure is depicted as the physical circuit figure of mobile phone realization FM function of radio receiver part in the present embodiment: wherein, C1, C2, C3, C4 and L1 form FM frequency range band stop filter, arrive ground with the FM broadcast singal that stops the PF antenna to receive, C1, C2, four electric capacity of C3, C4 ground connection in parallel are in order to reduce the influence of distributed constant to former communication antenna, four electric capacity is presented point respectively from PF antenna ground different directions ground connection in actual PCB design; L2, L3, C6 and C6 form signal merit parallel circuit; The double FM antenna-matching circuit of doing of L3 and C5.
Embodiment two.
See also Fig. 3, mobile phone comprises in the present embodiment: mobile communication antenna, mobile communication circuit, signal merit parallel circuit, FM antenna-matching circuit, FM radio reception circuit.With the difference of embodiment one be: the mobile communication antenna is a monopole antenna in the present embodiment, thereby reduces and used FM frequency range band stop filter, and the function of other each circuit parts is just the same.
See also Fig. 4, this figure is depicted as the physical circuit figure of mobile phone realization FM function of radio receiver part in the present embodiment: wherein, C5, C6, C7, L3, L4 and L5 form signal merit parallel circuit and FM antenna-matching circuit.C5, C7 and L3, L4 form the FM antenna-matching circuit.
Above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, only with reference to preferred embodiment the utility model is had been described in detail.Those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement the technical solution of the utility model, and do not break away from the spirit and scope of technical solutions of the utility model, all should be encompassed in the middle of the claim scope of the present utility model.
Claims (3)
1. the mobile phone with FM function of radio receiver comprises mobile communication antenna and mobile communication circuit, it is characterized in that this mobile phone comprises signal merit parallel circuit, FM antenna-matching circuit and FM radio reception circuit;
Described signal merit parallel circuit, FM antenna-matching circuit and FM radio reception circuit are connected successively, and described signal merit parallel circuit is connected respectively with the mobile communication circuit with the mobile communication antenna simultaneously.
2. the mobile phone with FM function of radio receiver as claimed in claim 1 is characterized in that this mobile phone comprises FM frequency range band stop filter, and this FM frequency range band stop filter is connected with described mobile communication antenna.
3. the mobile phone with FM function of radio receiver as claimed in claim 2 is characterized in that, described FM frequency range band stop filter is made up of four electric capacity and an inductance of parallel connection and ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020675276.7U CN201947344U (en) | 2010-12-23 | 2010-12-23 | Mobile phone with frequency modulation (FM) reception function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020675276.7U CN201947344U (en) | 2010-12-23 | 2010-12-23 | Mobile phone with frequency modulation (FM) reception function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201947344U true CN201947344U (en) | 2011-08-24 |
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ID=44474678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020675276.7U Expired - Fee Related CN201947344U (en) | 2010-12-23 | 2010-12-23 | Mobile phone with frequency modulation (FM) reception function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201947344U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110289880A (en) * | 2019-05-10 | 2019-09-27 | 华为技术有限公司 | Signal diostribution device and electronic equipment |
-
2010
- 2010-12-23 CN CN201020675276.7U patent/CN201947344U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110289880A (en) * | 2019-05-10 | 2019-09-27 | 华为技术有限公司 | Signal diostribution device and electronic equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110824 Termination date: 20161223 |
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| CF01 | Termination of patent right due to non-payment of annual fee |