CN201656968U - Mobile terminal provided with shared internal antenna - Google Patents
Mobile terminal provided with shared internal antenna Download PDFInfo
- Publication number
- CN201656968U CN201656968U CN2010201278632U CN201020127863U CN201656968U CN 201656968 U CN201656968 U CN 201656968U CN 2010201278632 U CN2010201278632 U CN 2010201278632U CN 201020127863 U CN201020127863 U CN 201020127863U CN 201656968 U CN201656968 U CN 201656968U
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- antenna
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- portable terminal
- gsm
- circuit
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Abstract
The utility model relates to a mobile terminal provided with a shared internal antenna. The mobile terminal comprises an internal GSM antenna and an internal FM antenna which are an identical antenna. Aiming at the defects of large dimension and high cost of the present independently arranged FM internal antenna, the mobile terminal adopts another internal antenna, such as a GSM antenna, on the mobile terminal as the internal FM antenna, thereby realizing the multifunction sharing of one antenna. By adopting the technical scheme, the stability of the antenna is sufficiently ensured, simultaneously the space inside the mobile terminal can not be increased, and the cost of adding another antenna can be avoided.
Description
[technical field]
The utility model relates to the portable terminal that is provided with built-in aerial, is specifically related to a kind of portable terminal that is provided with shared built-in.
[background technology]
FM (FM receiver) becomes the basic configuration function of portable terminal, but the very inconvenient user of traditional external FM antenna uses, so, in the recent period many antenna producers built-in FM antenna that released one after another.
But built-in FM antenna independently is arranged on portable terminal inside, can take bigger space, portable terminal inside, thereby has influenced the external styling of portable terminal, and the cost that built-in FM antenna also can increase portable terminal independently is set.
In portable terminal mobile phone today of popularizing for example, its function, external styling, production cost become the principal focal point of Mobile Phone Market competition, and the FM built-in aerial will obtain better application and popularization, and its cost, size need further to reduce.
[utility model content]
Built-in FM antenna independently is arranged on portable terminal inside in the prior art in order to solve, can take bigger space, portable terminal inside, thereby influenced the external styling of portable terminal, and this technical problem the utility model of production cost that built-in FM antenna independently is set also can increases portable terminal provides a kind of portable terminal that is provided with shared built-in.
The technical scheme that the prior art problem that solves the utility model is adopted is: a kind of portable terminal that is provided with shared built-in is provided, described portable terminal comprises built-in GSM antenna and built-in FM antenna, and described built-in GSM antenna and described built-in FM antenna are the same antenna.
According to an optimal technical scheme of the present utility model: described portable terminal comprises circuit board, described circuit board is provided with frequency selection circuit, antenna lower margin contact chip, antenna feed pin contact chip, FM chip, GSM demultiplexing circuit and FM demultiplexing circuit, place described FM demultiplexing circuit between described antenna feed pin contact chip and the described FM chip, described GSM demultiplexing circuit is set between described antenna feed pin contact chip and GSM circuit, described frequency selection circuit is set between the ground of described antenna lower margin contact chip and described circuit board.
According to an optimal technical scheme of the present utility model: described FM demultiplexing circuit is arranged between described antenna lower margin contact chip and the described FM chip.
According to an optimal technical scheme of the present utility model: described portable terminal comprises circuit board, described circuit board is provided with antenna feed pin contact chip, FM chip, GSM demultiplexing circuit and FM demultiplexing circuit, place described FM demultiplexing circuit between described antenna feed pin contact chip and the described FM chip, described GSM demultiplexing circuit is set between described antenna feed pin contact chip and GSM circuit.
According to an optimal technical scheme of the present utility model: the shared built-in that is provided with in the described portable terminal is the antenna of all forms such as monopole antenna, planar inverted-F antenna or loop aerial.
According to an optimal technical scheme of the present utility model: described GSM antenna is the mobile terminal communication antenna of all types such as 2G antenna, 2.5G antenna, 2.75G antenna, 3G antenna or 4G antenna, wherein, described 2G antenna comprises GSM850, GSM900, DCS1800, PCS1900 or CDMA etc.
According to an optimal technical scheme of the present utility model: described portable terminal also can comprise external FM antenna, and described external FM antenna and described built-in FM antenna can switch by a radio frequency commutation circuit device.The commutation circuit device that is provided with between described external FM antenna and described built-in FM antenna also can save, and built-in FM antennas paths and external FM antennas paths directly connect together by radio-frequency transmission line, and the inside and outside antenna of putting of FM can be worked simultaneously.
According to an optimal technical scheme of the present utility model: described built-in FM antenna can be used built-in TV antenna instead.
The utility model is at the current independent deficiency that FM built-in aerial size is big, cost is high that is provided with, make built-in FM antenna with other built-in aerial on the portable terminal such as GSM antenna, realized the multi-functional shared of an antenna, when abundant assurance antenna performance is stable, can not increase the space of portable terminal after the employing technical solutions of the utility model, also need not increase the cost of establishing an antenna in addition.
[description of drawings]
Fig. 1. the utility model is provided with portable terminal interior circuit board structural representation in the method for sharing of the portable terminal of shared built-in and built-in aerial;
Fig. 2. built-in GSM and built-in FM community antenna circuit schematic diagram;
Fig. 3. built-in FM antenna and external FM antenna switching circuit schematic diagram;
Fig. 4. built-in FM antenna and external FM antenna switching construction schematic diagram;
Fig. 5. built-in FM antenna and the direct connectivity structure schematic diagram of external FM antenna.
[embodiment]
Built-in FM antenna independently is arranged on portable terminal inside in the prior art in order to solve, can take bigger space, portable terminal inside, thereby influenced the external styling of portable terminal, and this technical problem the utility model of production cost that built-in FM antenna independently is set also can increases greatly portable terminal provides a kind of portable terminal that is provided with shared built-in, described portable terminal comprises built-in GSM antenna and built-in FM antenna, and described built-in GSM antenna and described built-in FM antenna are the same antenna.
Below in conjunction with accompanying drawing technical solutions of the utility model are elaborated:
See also portable terminal interior circuit board structural representation in the method for sharing that Fig. 1 the utility model is provided with the portable terminal of shared built-in and built-in aerial.As shown in Figure 1, described portable terminal comprises circuit board 1, described circuit board 1 is provided with frequency selection circuit 2, antenna lower margin contact chip 3, antenna feed pin contact chip 4, FM chip 27, GSM circuit 28, GSM demultiplexing circuit 6 and FM demultiplexing circuit 5, place described FM demultiplexing circuit 5 between described antenna feed pin contact chip 4 and the described FM chip, between described antenna feed pin contact chip 4 and GSM circuit 28, described GSM demultiplexing circuit 6 is set, between the ground of described antenna lower margin contact chip 3 and described circuit board 1 described frequency selection circuit 2 is set.
Be arranged between described antenna lower margin contact chip 3 and the described FM chip at FM demultiplexing circuit 5 described in another optimal technical scheme of the present utility model.
Comprise circuit board 1 at portable terminal described in another optimal technical scheme of the present utility model, described circuit board 1 is provided with antenna feed pin contact chip 4, FM chip 27, GSM circuit 28, GSM demultiplexing circuit 6 and FM demultiplexing circuit 5, place described FM demultiplexing circuit 5 between described antenna feed pin contact chip 4 and the described FM chip, between described antenna feed pin contact chip 4 and GSM circuit 28, described GSM demultiplexing circuit 6 is set.
Technical scheme concrete in Fig. 1 is: antenna lower margin contact chip 3, antenna feed pin contact chip 4, frequency selection circuit 2, FM demultiplexing circuit 5 and GSM demultiplexing circuit 6 are arranged on the circuit board 1.Frequency selection circuit 2 can allow the GSM signal smoothly by and restrain the FM signal and pass through; Antenna lower margin contact chip 3 is connected with the lower margin of portable terminal GSM antenna, and the ground with portable terminal printed circuit board 1 does not directly link to each other, but is connected with the ground of portable terminal printed circuit board 1 by frequency selection circuit 2; Antenna feed pin contact chip 4 is connected with the feedback pin of portable terminal GSM antenna; One end of FM demultiplexing circuit 5 is connected with antenna feed pin contact chip 4, and the other end is connected with FM chip 27, can allow the FM signal by and restrain the GSM signal and pass through, make the FM antenna-matching circuit simultaneously; One end of GSM demultiplexing circuit 6 is connected with antenna feed pin contact chip 4, and the other end is connected with the GSM circuit, can allow the GSM signal smoothly by and restrain the FM signal and pass through, make the GSM antenna-matching circuit simultaneously.
When the band GSM antenna of lower margin such as PIFA (planar inverted-F antenna) are installed on the portable terminal printed circuit board 1, on the one hand, concerning the GSM signal, the lower margin of GSM antenna communicates with the ground of portable terminal printed circuit board 1 by antenna lower margin contact chip 3 and frequency selection circuit 2, the feedback pin of GSM antenna communicates with the GSM circuit by antenna feed pin contact chip 4 and GSM demultiplexing circuit 6, and isolate with the FM chip, the GSM antenna operate as normal of band lower margin is at the GSM antenna condition; On the other hand, concerning the FM signal, the lower margin of GSM antenna can not communicate by the ground of frequency selection circuit 2 with portable terminal printed circuit board 1, be in isolation with the ground of portable terminal printed circuit board 1, the antenna feed pin communicates with the FM chip by antenna feed pin contact chip 4 and FM demultiplexing circuit 5, and isolate with the GSM circuit, the GSM antenna is operated in FM monopole antenna state.Like this, the GSM antenna also can be worked as FM antenna usefulness except that the GSM antenna use.
For not with the GSM antenna of lower margin such as monopole antenna etc., on portable terminal printed circuit board 1, can remove antenna lower margin contact chip 3 and frequency selection circuit 2, directly realize FM, GSM antenna duplexer by antenna feed pin contact chip 4, FM demultiplexing circuit 5 and GSM demultiplexing circuit 6.
The shared built-in that is provided with in the described in the above description portable terminal can be the antenna of all forms such as monopole antenna, PIFA (plane is to inverse-F antenna), loop aerial, and its technology can be iron plate, FPC (flexible printed circuit), pottery, PCB (printed circuit board) antenna, LDS (laser direct forming) etc.
Described GSM antenna is the mobile terminal communication antenna of all types such as 2G antenna, 2.5G antenna, 2.75G antenna, 3G antenna or 4G antenna, and wherein, described 2G antenna comprises GSM850, GSM900, DCS1800, PCS1900 or CDMA etc.
See also built-in GSM of Fig. 2 and built-in FM community antenna circuit schematic diagram.As shown in Figure 2, the antenna feed foot of built-in GSM antenna 9 and passive device (resistance, inductance or electric capacity) 7,8,12,13,14,15,16,17 link to each other with 18, and the antenna ground foot of built-in GSM antenna 9 and passive device (resistance, inductance or electric capacity) 10 link to each other with 11.
Wherein passive device 7,8,16,17 and 18 is formed the GSM demultiplexing circuit, and passive device 12,13,14 and 15 is formed the FM demultiplexing circuit, and passive device 10 and 11 is formed frequency selection circuit.Passive device can dispose the SMD device of 0402 size, as passive device 7,8 and 10 is 22pF electric capacity, passive device 11,12 and 16 is the 120nH inductance, passive device 13 and 17 is the 47nH inductance, passive device 14 is a 56pF electric capacity, passive device 15 is the 82nH inductance, passive device 18 is removed, such configuration circuit can make mobile terminal antennas such as GSM850, GSM900, DCS1800, PCS1900, CDMA and 3G as the FM built-in aerial, and the passive device 7,17,18,12,15 etc. that wherein is used for antenna match can be according to the actual antennas adjustment.The form of GSM demultiplexing circuit, FM demultiplexing circuit and frequency selection circuit can variation, can select and adjust according to actual needs, and demultiplexing circuit also can be with duplexer etc.
See also built-in FM antenna of Fig. 4 and external FM antenna switching construction schematic diagram, comprise FM demultiplexing circuit 5, radio frequency commutation circuit device 29, FM chip 27, earphone interface 30 and earphone 31.The common port of radio frequency commutation circuit device 29 links to each other with FM chip 27, and an end links to each other with FM demultiplexing circuit 5, and the other end links to each other with earphone interface 30; Earphone 31 can insert earphone interface 30 and link to each other.Earphone 31 is made the FM external antenna.When inserting earphone, the common port of radio frequency commutation circuit device 29 is with an end conducting that links to each other with earphone interface 30 of radio frequency commutation circuit device 29, with a not conducting of end that links to each other with FM demultiplexing circuit 5 of radio frequency commutation circuit device 29, FM is operated in the external antenna pattern.When not inserting earphone, the common port of radio frequency commutation circuit device 29 is with a not conducting of end that links to each other with earphone interface 30 of radio frequency commutation circuit device 29, with an end conducting that links to each other with FM demultiplexing circuit 5 of radio frequency commutation circuit device 29, FM is operated in the built-in aerial pattern.Promptly realize that by radio frequency commutation circuit device the inside and outside antenna of putting of FM switches.
See also built-in FM antenna of Fig. 3 and external FM antenna switching circuit schematic diagram.As shown in Figure 3, circuit links to each other with mobile terminal earphone interface end 20, FM die terminals 19.When the external earphone of portable terminal inserted earphone interface, dc voltage input end 22 did not add direct voltage, and the FM die terminals communicates with the earphone interface end, and the external earphone of portable terminal is when the FM external antenna; When not having external earphone to insert earphone interface, dc voltage input end 22 adds a direct current voltage makes 21 conductings of radio-frequency (RF) switch diode, and the FM die terminals communicates with built-in FM antenna by radio-frequency (RF) switch diode 21 and capacitance 24.The inside and outside antenna of putting of FM can switch as required like this.Wherein resistance 23 is generally about several kilohms, and the direct voltage that dc voltage input end 22 adds is about several volts, and capacitance 24 is about 1nF, and the frequency selection circuit that electric capacity 25 and inductance 26 are formed can allow direct current pass through and restrain the FM signal and pass through.Commutation circuit can have multi-form, also can be the diverter switch module.
Radio frequency commutation circuit device 29 can remove in many cases, and the inside and outside antenna of putting directly links together by radio-frequency transmission line, and FM built-in aerial and FM external antenna can be worked simultaneously, and the FM antenna performance can not descend too much.See also built-in FM antenna of Fig. 5 and the direct syndeton schematic diagram of external FM antenna, comprise FM demultiplexing circuit 5, radio-frequency transmission line 32, FM chip 27, earphone interface 30 and earphone 31, wherein earphone 31 is made the FM external antenna.Radio-frequency transmission line 32 links together FM demultiplexing circuit 5, earphone interface 30 and FM chip 27, promptly can realize also that without radio frequency commutation circuit device 29 the inside and outside antenna of putting of FM all can work.
The utility model also provides a kind of method for sharing of portable terminal built-in aerial, the method for sharing of described portable terminal built-in aerial is used in the portable terminal that is provided with shared built-in, described portable terminal comprises built-in GSM antenna and built-in FM antenna, described built-in GSM antenna and described built-in FM antenna are the same antenna, and its method for sharing is:
For the GSM signal, the lower margin of built-in GSM antenna communicates by the ground of the circuit board that is provided with in antenna lower margin contact chip and frequency selection circuit and the portable terminal, the feedback pin of described built-in GSM antenna communicates with the GSM circuit by antenna feed pin contact chip and GSM demultiplexing circuit, and isolate with the FM chip, the GSM antenna operate as normal of band lower margin is at the GSM antenna condition;
For the FM signal, the ground of the circuit board that is provided with in the lower margin of GSM antenna and the portable terminal is in isolation, the antenna feed pin communicates with the FM chip by antenna feed pin contact chip and FM demultiplexing circuit, and isolates with the GSM circuit, and the GSM antenna is operated in the FM antenna condition.
The utility model is at the current independent deficiency that FM built-in aerial size is big, cost is high that is provided with, make built-in FM antenna with other built-in aerial on the portable terminal such as GSM antenna, realized the multi-functional shared of an antenna, guaranteeing that fully antenna performance can not increase the portable terminal inner space in stable, also need not increase the cost of establishing an antenna in addition after adopting technical solutions of the utility model.
Above content be in conjunction with concrete optimal technical scheme to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection range of the present utility model.
Claims (8)
1. portable terminal that is provided with shared built-in, it is characterized in that: described portable terminal comprises built-in GSM antenna and built-in FM antenna, described built-in FM antenna and described built-in GSM antenna are the same antenna.
2. according to the described portable terminal that is provided with shared built-in of claim 1, it is characterized in that: described portable terminal comprises circuit board (1), described circuit board (1) is provided with frequency selection circuit (2), antenna lower margin contact chip (3), antenna feed pin contact chip (4), FM chip (27), GSM demultiplexing circuit (6) and FM demultiplexing circuit (5), between described antenna feed pin contact chip (4) and the described FM chip (27) described FM demultiplexing circuit (5) is set, between described antenna feed pin contact chip (4) and GSM circuit (28), described GSM demultiplexing circuit (6) is set, between the ground of described antenna lower margin contact chip (3) and described circuit board (1) described frequency selection circuit (2) is set.
3. according to the described portable terminal that is provided with shared built-in of claim 2, it is characterized in that: described FM demultiplexing circuit (5) is arranged between described antenna lower margin contact chip (3) and the described FM chip (27).
4. according to the described portable terminal that is provided with shared built-in of claim 1, it is characterized in that: described portable terminal comprises circuit board (1), described circuit board (1) is provided with antenna feed pin contact chip (4), FM chip (27), GSM demultiplexing circuit (6) and FM demultiplexing circuit (5), place described FM demultiplexing circuit (5) between described antenna feed pin contact chip (4) and the described FM chip (27), between described antenna feed pin contact chip (4) and GSM circuit (28), described GSM demultiplexing circuit (6) is set.
5. according to the described portable terminal that is provided with shared built-in of claim 1, it is characterized in that: the shared built-in that is provided with in the described portable terminal is not for the antenna of the sky line or belt grounding leg of grounding leg.
6. according to the described portable terminal that is provided with shared built-in of claim 1, it is characterized in that: described GSM antenna is the built-in communication antenna of portable terminal, comprise 2G antenna, 2.5G antenna, 2.75G antenna, 3G antenna or 4G antenna, wherein, described 2G antenna comprises GSM850, GSM900, DCS1800, PCS1900 or CDMA antenna.
7. according to the described portable terminal that is provided with shared built-in of claim 1, it is characterized in that: described portable terminal connects external FM antenna, described external FM antenna and described built-in FM antenna switch by a radio frequency commutation circuit device, and perhaps built-in FM antennas paths and external FM antennas paths directly connect together by radio-frequency transmission line.
8. according to the described portable terminal that is provided with shared built-in of claim 1, it is characterized in that: described built-in FM antenna can be used built-in TV antenna instead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201278632U CN201656968U (en) | 2010-03-05 | 2010-03-05 | Mobile terminal provided with shared internal antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201278632U CN201656968U (en) | 2010-03-05 | 2010-03-05 | Mobile terminal provided with shared internal antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201656968U true CN201656968U (en) | 2010-11-24 |
Family
ID=43122196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201278632U Expired - Lifetime CN201656968U (en) | 2010-03-05 | 2010-03-05 | Mobile terminal provided with shared internal antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201656968U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807935A (en) * | 2010-03-05 | 2010-08-18 | 深圳市南斗星科技有限公司 | Mobile terminal with shared built-in aerial and method for sharing built-in aerial |
| CN107277665A (en) * | 2011-08-18 | 2017-10-20 | 中兴通讯股份有限公司 | Headphone device, earphone and the method using Headphone device process signal |
| CN110324101A (en) * | 2018-03-29 | 2019-10-11 | 华为技术有限公司 | A kind of circuit, method and electronic equipment playing FM broadcast program |
-
2010
- 2010-03-05 CN CN2010201278632U patent/CN201656968U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807935A (en) * | 2010-03-05 | 2010-08-18 | 深圳市南斗星科技有限公司 | Mobile terminal with shared built-in aerial and method for sharing built-in aerial |
| CN107277665A (en) * | 2011-08-18 | 2017-10-20 | 中兴通讯股份有限公司 | Headphone device, earphone and the method using Headphone device process signal |
| CN110324101A (en) * | 2018-03-29 | 2019-10-11 | 华为技术有限公司 | A kind of circuit, method and electronic equipment playing FM broadcast program |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20101124 Effective date of abandoning: 20120222 |