CN201781481U - Mobile terminal and control device of antenna circuit - Google Patents
Mobile terminal and control device of antenna circuit Download PDFInfo
- Publication number
- CN201781481U CN201781481U CN2010202789902U CN201020278990U CN201781481U CN 201781481 U CN201781481 U CN 201781481U CN 2010202789902 U CN2010202789902 U CN 2010202789902U CN 201020278990 U CN201020278990 U CN 201020278990U CN 201781481 U CN201781481 U CN 201781481U
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Abstract
The utility model belongs to the technical field of mobile terminals and discloses a mobile terminal and a control device of an antenna circuit, and the device comprises an FM (frequency modulation) antenna and a main antenna, as well as a main signal receiving machine connected with the main antenna, wherein the main signal receiving machine is connected with a filter for filtering out FM signals; and the device further comprises an FM receiving machine connected with the FM antenna, a first inductor is arranged between the main signal receiving machine and the FM receiving machine, and the first inductor is used for blocking the leakage of main signals to the FM receiving machine. The device cleverly utilizes the space of the main antenna, the properties of electromagnetic radiation and the mutual isolation of the FM signals on the circuit and combines the FM antenna with the main antenna, thereby realizing co-existence of the two antennas, not only greatly saving the space of the terminal, but also saving the cost and being conductive to development of the mobile terminal technology.
Description
Technical field
The utility model belongs to technical field of mobile terminals, is specifically related to the control device of a kind of portable terminal and antenna circuit.
Background technology
Along with the continuous development of portable terminal technology, the user is also more and more higher to the requirement of mobile terminal function.
FM antenna in the market begins to be developed to built-in aerial by external pull bar and earphone ground wire, and wherein, built-in aerial mainly comprises following several situation:
1), the PCB antenna, the printed circuit board (PCB) of making at special media (Printed Circuit Board, PCB) above cabling, structure is fixed, antenna is less relatively;
2), coil antenna, thin copper wire above the soft magnetic bodies of moulding, is adopted different soft magnetic bodies according to structure, it is smaller that antenna also can be done;
3), the FPC antenna, according to structure flexible printed circuit board (Flexible Printed Circuit, FPC) above cabling, that can do above the structure is more flexible.
Wherein, the FM working frequency points is 100MHz, and the minimum working frequency points of the main antenna of portable terminal is 800MHz, and center frequency point can become frequency multiplication.
The development trend of portable terminal is miniaturization at present, be difficult to the space that provides big above the structure, but the FM antenna is bigger to space requirement, generally also can stop enough spaces during mobile terminal design to main antenna, how main antenna and FM antenna two lines are unified, further saving space and cost, is one of direction of technical field of mobile terminals research.
The utility model content
The purpose of this utility model is to provide a kind of control device of antenna circuit, is intended to space and cost are further saved in main antenna and the unification of FM antenna two lines.
The utility model embodiment realizes like this, a kind of control device of antenna circuit, comprise FM antenna and main antenna, described device also comprises the main signal receiver that connects described main antenna, and described main signal receiver connects the filter that is used for filtering FM signal;
Described device also comprises the FM receiver that connects described FM antenna, is provided with between described main signal receiver and the described FM receiver to be used to block first inductance that main signal is revealed to the FM receiver.
The control device of the antenna circuit that the utility model embodiment provides, wherein, described device comprises that also one is used to realize the main signal ground connection to main antenna, and to the high pass main signal resonant circuit of the signal of FM antenna open circuit, described high pass main signal resonant circuit is made up of second inductance and first electric capacity.
The control device of the antenna circuit that the utility model embodiment provides, wherein, described device also comprises the main signal match circuit that is used to mate main signal, described main signal match circuit connects described main signal receiver.
The control device of the antenna circuit that the utility model embodiment provides, wherein, described device comprises that also one is used to mate the FM Signal Matching circuit of FM signal, described FM Signal Matching circuit connects described FM receiver.
Another purpose of the utility model embodiment is to provide a kind of portable terminal, comprise FM antenna and main antenna, described terminal comprises an ACU antenna control unit, described device comprises the main signal receiver that connects described main antenna, and described main signal receiver connects the filter that is used for filtering FM signal;
Described device also comprises the FM receiver that connects described FM antenna, is provided with between described main signal receiver and the described FM receiver to be used to block first inductance that main signal is revealed to the FM receiver.
The portable terminal that the utility model embodiment provides is put, wherein, described device comprises that also one is used to realize the main signal ground connection to main antenna, and to the high pass main signal resonant circuit of the signal open circuit of FM antenna, described high pass main signal resonant circuit is made up of second inductance and first electric capacity.
The portable terminal that the utility model embodiment provides, wherein, described device also comprises the main signal match circuit that is used to mate main signal, described main signal match circuit connects described main signal receiver.
The portable terminal that the utility model embodiment provides is put, and wherein, described device comprises that also one is used to mate the FM Signal Matching circuit of FM signal, and described FM Signal Matching circuit connects described FM receiver.
The utility model embodiment is by being provided with first inductance between main signal receiver and FM receiver, reveal to the FM receiver by first inductance blocking-up main signal, by connecting filter at the main signal receiver, be used for filtering FM signal, the utility model has utilized the characteristic and the mutual isolation of radiofrequency signal above the circuit of space, the electromagnetic radiation of main antenna cleverly, the FM antenna done with main antenna be in the same place, realize the coexistence of two lines, not only saved the space of terminal greatly, more provide cost savings, be beneficial to the development of portable terminal technology.
Description of drawings
The structure chart of the control device of the antenna circuit that Fig. 1 provides for the utility model embodiment.
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.
Among the utility model embodiment, terminal comprises FM antenna and main antenna, the control device of described antenna circuit comprises the main signal receiver (scheming not shown) that connects described main antenna, and described main signal receiver connects the filter (scheming not shown) that is used for filtering FM signal;
See also Fig. 1, R4, R5, R6 are the main signal match circuits that is used to mate main signal, connect the main signal end, and the main signal end connects the main signal receiver, and the main signal receiver is connected with filter, and filter can filtering FM signal.
The control device of described antenna circuit also comprises the FM receiver (scheming not shown) that connects described FM antenna;
See also Fig. 1, R1, R2, R3 are the FM Signal Matching circuit that is used to mate the FM signal, connect the FM signal end, and the FM signal end connects the FM receiver.
In specific implementation process, see also Fig. 1, be provided with first inductance L 1 between FM Signal Matching circuit and the main signal match circuit, be to be provided with first inductance L 1 between described main signal receiver and the described FM receiver, described first inductance L 1 is used to block the main signal of main signal match circuit and reveals to FM Signal Matching circuit, thereby the blocking-up main signal is revealed to the FM receiver, reduces the interference of radiofrequency signal to the FM receiver sensitivity.
The control device of described antenna circuit also comprises a high pass main signal resonant circuit, and described high pass main signal resonant circuit is made up of second inductance L 2 and first capacitor C 1;
See also Fig. 1, the effect of L2, C1 is a high pass main signal resonant circuit, realizes the main signal ground connection to main antenna, and the signal of FM antenna is opened a way.
The utility model embodiment utilizes the resistance friendship effect of inductance, and the blocking-up main signal is revealed to the FM receiver on circuit.
See also Fig. 1, ANT1 is an antenna source feedback point, and ANT2 is a main antenna ground feedback point.The radiation line length of antenna is λ/4, (1+1/4) λ, (2+1/4) λ ...., (n+1/4) λ, certainly can not reach λ/4 of FM antenna fully, but can reach λ/4, λ/8......, the λ/n of FM antenna, that is to say that the utility model embodiment gets a balance point between FM antenna and main antenna, on the basis that guarantees the main antenna performance, realize the FM antenna performance.
The utility model embodiment is by being provided with first inductance between main signal receiver and FM receiver, reveal to the FM receiver by first inductance blocking-up main signal, by connecting filter at the main signal receiver, be used for filtering FM signal, the utility model has utilized the characteristic and the mutual isolation of radiofrequency signal above the circuit of space, the electromagnetic radiation of main antenna cleverly, the FM antenna done with main antenna be in the same place, realize the coexistence of two lines, not only saved the space of terminal greatly, more provide cost savings, be beneficial to the development of portable terminal technology.
Should be understood that, for those of ordinary skills, can be improved according to the above description or conversion, and these improvement and conversion all should belong to the protection range of the utility model claims.
Claims (8)
1. the control device of an antenna circuit comprises FM antenna and main antenna, it is characterized in that,
Described device also comprises the main signal receiver that connects described main antenna, and described main signal receiver connects the filter that is used for filtering FM signal;
Described device also comprises the FM receiver that connects described FM antenna, is provided with between described main signal receiver and the described FM receiver to be used to block first inductance that main signal is revealed to the FM receiver.
2. the control device of antenna circuit as claimed in claim 1, it is characterized in that, described device comprises that also one is used to realize the main signal ground connection to main antenna, and to the high pass main signal resonant circuit of the signal of FM antenna open circuit, described high pass main signal resonant circuit is made up of second inductance and first electric capacity.
3. the control device of antenna circuit as claimed in claim 1 is characterized in that, described device also comprises the main signal match circuit that is used to mate main signal, and described main signal match circuit connects described main signal receiver.
4. the control device of antenna circuit as claimed in claim 1 is characterized in that, described device comprises that also one is used to mate the FM Signal Matching circuit of FM signal, and described FM Signal Matching circuit connects described FM receiver.
5. a portable terminal comprises FM antenna and main antenna, it is characterized in that, described terminal comprises an ACU antenna control unit, and described device comprises the main signal receiver that connects described main antenna, and described main signal receiver connects the filter that is used for filtering FM signal;
Described device also comprises the FM receiver that connects described FM antenna, is provided with between described main signal receiver and the described FM receiver to be used to block first inductance that main signal is revealed to the FM receiver.
6. portable terminal as claimed in claim 5, it is characterized in that, described device comprises that also one is used to realize the main signal ground connection to main antenna, and to the high pass main signal resonant circuit of the signal open circuit of FM antenna, described high pass main signal resonant circuit is made up of second inductance and first electric capacity.
7. portable terminal as claimed in claim 5 is characterized in that, described device also comprises the main signal match circuit that is used to mate main signal, and described main signal match circuit connects described main signal receiver.
8. portable terminal as claimed in claim 5 is characterized in that, described device comprises that also one is used to mate the FM Signal Matching circuit of FM signal, and described FM Signal Matching circuit connects described FM receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202789902U CN201781481U (en) | 2010-07-30 | 2010-07-30 | Mobile terminal and control device of antenna circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202789902U CN201781481U (en) | 2010-07-30 | 2010-07-30 | Mobile terminal and control device of antenna circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201781481U true CN201781481U (en) | 2011-03-30 |
Family
ID=43794682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202789902U Expired - Fee Related CN201781481U (en) | 2010-07-30 | 2010-07-30 | Mobile terminal and control device of antenna circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201781481U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102215278A (en) * | 2010-07-30 | 2011-10-12 | 惠州Tcl移动通信有限公司 | Mobile terminal integrating two antennae into a whole and antenna control device thereof |
| CN102891697A (en) * | 2011-07-22 | 2013-01-23 | 联想移动通信科技有限公司 | Terminal equipment |
| CN103346404A (en) * | 2013-06-28 | 2013-10-09 | 无锡创元电子科技有限公司 | Resonant type broadband short-wave antenna |
-
2010
- 2010-07-30 CN CN2010202789902U patent/CN201781481U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102215278A (en) * | 2010-07-30 | 2011-10-12 | 惠州Tcl移动通信有限公司 | Mobile terminal integrating two antennae into a whole and antenna control device thereof |
| CN102891697A (en) * | 2011-07-22 | 2013-01-23 | 联想移动通信科技有限公司 | Terminal equipment |
| CN102891697B (en) * | 2011-07-22 | 2016-01-13 | 联想移动通信科技有限公司 | A kind of terminal equipment |
| CN103346404A (en) * | 2013-06-28 | 2013-10-09 | 无锡创元电子科技有限公司 | Resonant type broadband short-wave antenna |
| CN103346404B (en) * | 2013-06-28 | 2015-04-15 | 无锡创元电子科技有限公司 | Resonant type broadband short-wave antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110330 Termination date: 20130730 |