CN208904990U - There is the cellular radio circuit of GSM - Google Patents
There is the cellular radio circuit of GSM Download PDFInfo
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- CN208904990U CN208904990U CN201820667427.0U CN201820667427U CN208904990U CN 208904990 U CN208904990 U CN 208904990U CN 201820667427 U CN201820667427 U CN 201820667427U CN 208904990 U CN208904990 U CN 208904990U
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- gsm
- duplexer
- power amplifier
- antenna
- main collection
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Abstract
The utility model provides a kind of cellular radio circuit for having GSM, for mobile terminal device, including RF transceiver, power amplifier, SAW filter, duplexer, coupler, main collection antenna, duplexer and GSM power amplifier module, diversity antenna, RF transceiver is connect with PA signal, power amplifier is connect by SAW filter with the duplexer, duplexer is connected by coupler to main collection aerial signal, RF transceiver is connect by SAW filter with duplexer and GSM power amplifier module signal, duplexer and GSM power amplifier module are connect with diversity antenna signals, the utility model has the beneficial effects that: reducing the Insertion Loss of main collection antenna, the performance of TX can be improved, it can also be improved RX receiving sensitivity；The transmission power of PA can reduce, and power consumption also can be reduced accordingly, reduce the fever of product；The coupling path design of main collection antenna can be simpler, additional switch or π type attenuation device is not needed, to reduce costs.
Description
[technical field]
The utility model relates to a kind of cellular radio circuit more particularly to a kind of cellular radio circuits for having GSM.
[background technique]
At present in the cellular radio scheme of 4G/3G/2G, the realization of GSM mostly uses II TxM of Phase (GSM power amplifier and day
Wiretap is two-in-one) it is switched as main collection, such as SKY77910-21, Insertion Loss is respectively 0.95/1.20/ in low, middle and high frequency
1.25dB；And diversity mostly uses duplexer, such as SKY13526-485LF, Insertion Loss is respectively 0.40/0.45/ in high, normal, basic frequency
0.70dB；Have following defects that the Insertion Loss of 1, GSM TxM leads to greatly the decline of main collection receiving sensitivity；2, the Insertion Loss of TxM is led greatly
Cause PA power consumption big, fever is serious, and reduces cruise duration；3, when having coupler after TxM, additional device need to be increased in coupling path
Part leads to cost increase；4, GSM walk when main collection it is main collection antenna frequency point it is more, debugging difficulty is also larger.
[utility model content]
The utility model aim is that the Insertion Loss for solving GSM TxM leads to greatly the decline of main collection receiving sensitivity；TxM's inserts
Damage causes PA power consumption big greatly, and fever is serious, and reduces cruise duration；When having coupler after TxM, volume need to be increased in coupling path
Outer device, leads to cost increase；The frequency point that GSM walks main collection antenna when main collection is more, and debugging difficulty is also biggish insufficient and provides
A kind of cellular radio circuit for having GSM.
The utility model is achieved through the following technical solutions: a kind of cellular radio circuit having GSM, for moving
Terminal device, including RF transceiver, power amplifier, SAW filter, duplexer, coupler, main collection antenna, antenna are opened
It closes and GSM power amplifier module, diversity antenna, the RF transceiver is connect with the PA signal, the power amplification
Device is connect by the SAW filter with the duplexer, and the duplexer is connected by coupler to main collection aerial signal
It connects, the RF transceiver is connect by SAW filter with the duplexer and GSM power amplifier module signal, and the antenna is opened
It closes and GSM power amplifier module is connect with the diversity antenna signals.
Further, after the duplexer is combined the TRX of different LTE/WCDMA Band, by coupler to main collection
Antenna feed point.
Further, the TX/RX of GSM and the LTE/WCDMA DRX access of diversity are combined together on the RF transceiver
Onto diversity antenna.
The utility model has the beneficial effects that:
(1) Insertion Loss for reducing main collection antenna, can be improved the performance (such as ACLR adjacent channel leakage ratio) of TX, can also mention
High RX receiving sensitivity；
(2) transmission power of power amplifier can reduce, and power consumption also can be reduced accordingly, reduce the fever of product, increase
Product cruise duration；
(3) the coupling path design of main collection antenna can be simpler, does not need additional switch or π type attenuation device, thus
It reduces costs；
(4) debugging difficulty for reducing main collection antenna, further increases main collection antenna performance.
[Detailed description of the invention]
Fig. 1 is the cellular radio circuit diagram that the utility model has GSM；
Fig. 2 is the cellular radio circuit circuit diagram that the utility model has GSM；
Appended drawing reference: 1, RF transceiver；2, power amplifier；3, SAW filter；4, duplexer；5, coupler；
6, main collection antenna；7, duplexer and GSM power amplifier module；8, diversity antenna.
[specific embodiment]
With reference to the accompanying drawing and specific embodiment is described further the utility model:
As shown in Figure 1 and Figure 2, a kind of cellular radio circuit having GSM is used for mobile terminal device, including RF transceiver
1, power amplifier 2, SAW filter 3, duplexer 4, coupler 5, main collection antenna 6, duplexer and GSM power amplifier module 7,
Diversity antenna 8, the RF transceiver 1 are connect with 2 signal of power amplifier, and the power amplifier 2 is filtered by sound table
Wave device 3 is connect with the duplexer 4, and the duplexer 4 is connected by coupler 5 to main 6 signal of collection antenna, the radio frequency
Transceiver 1 is connect by SAW filter 3 with the duplexer and 7 signal of GSM power amplifier module, the duplexer and GSM
Power amplifier module 7 is connect with 8 signal of diversity antenna.
Preferably, after the duplexer 4 is combined the TRX of different LTE/WCDMA Band, main collection is arrived by coupler 5
6 feed point of antenna.
Preferably, the TX/RX of GSM and the LTE/WCDMA DRX access of diversity are combined arrive together on the RF transceiver 1
On diversity antenna 8.
According to the disclosure and teachings of the above specification, the utility model those skilled in the art can also be to above-mentioned reality
The mode of applying carries out change and modification appropriate.Therefore, the utility model is not limited to specific implementation disclosed and described above
Mode should also be as falling into the protection scope of the claims of the present utility model to some modifications and changes of the utility model.
In addition, although using some specific terms in this specification, these terms are merely for convenience of description, not to this reality
With novel composition any restrictions.
Claims (3)
1. a kind of cellular radio circuit for having GSM, it is characterised in that: including RF transceiver, power amplifier, the filtering of sound table
Device, duplexer, coupler, main collection antenna, duplexer and GSM power amplifier module, diversity antenna, the RF transceiver and institute
PA signal connection is stated, the power amplifier is connect by the SAW filter with the duplexer, described
Duplexer is connected by coupler to main collection aerial signal, and the RF transceiver is opened by SAW filter and the antenna
It closes and GSM power amplifier module signal connects, the duplexer and GSM power amplifier module are connect with the diversity antenna signals.
2. the cellular radio circuit according to claim 1 for having GSM, it is characterised in that: the duplexer is different
After the TRX combining of LTE/WCDMA Band, by coupler to main collection antenna feed point.
3. the cellular radio circuit according to claim 1 for having GSM, it is characterised in that: GSM on the RF transceiver
TX/RX and the LTE/WCDMA DRX access of diversity are combined on diversity antenna together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820667427.0U CN208904990U (en) | 2018-05-07 | 2018-05-07 | There is the cellular radio circuit of GSM |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820667427.0U CN208904990U (en) | 2018-05-07 | 2018-05-07 | There is the cellular radio circuit of GSM |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208904990U true CN208904990U (en) | 2019-05-24 |
Family
ID=66565896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820667427.0U Active CN208904990U (en) | 2018-05-07 | 2018-05-07 | There is the cellular radio circuit of GSM |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208904990U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112491434A (en) * | 2019-08-20 | 2021-03-12 | 合肥杰发科技有限公司 | Radio frequency front-end circuit, radio frequency signal receiving method, communication method and communication equipment |
-
2018
- 2018-05-07 CN CN201820667427.0U patent/CN208904990U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112491434A (en) * | 2019-08-20 | 2021-03-12 | 合肥杰发科技有限公司 | Radio frequency front-end circuit, radio frequency signal receiving method, communication method and communication equipment |
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