CN103762997B - Anti-jamming circuit and rf processing circuitry - Google Patents
Anti-jamming circuit and rf processing circuitry Download PDFInfo
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- CN103762997B CN103762997B CN201410060257.6A CN201410060257A CN103762997B CN 103762997 B CN103762997 B CN 103762997B CN 201410060257 A CN201410060257 A CN 201410060257A CN 103762997 B CN103762997 B CN 103762997B
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Abstract
The invention provides a kind of anti-jamming circuit and rf processing circuitry, described anti-jamming circuit is applied in portable terminal, described portable terminal comprises the first communication system and second communication system, described first communication system at least supports second communication standard, described second communication system at least supports the first communication standard, described anti-jamming circuit comprises: interference stops module, processes its Received signal strength for stoping described first communication system when described second communication system is in signal emission state.CDMA Received signal strength not being processed in first communication system described in the GSM_TX_EN signal controlling exported when being in signal emission state by utilizing described second communication system, eliminating the impact of GSM signal transmitting on CDMA signal receiving performance.
Description
Technical field
The present invention relates to mobile communication technology field, and relate more specifically to a kind of anti-jamming circuit and radio-frequency (RF) receiving circuit.
Background technology
At present, along with the variation of mobile communication technology, there is the mobile terminals simultaneously supporting two kinds of different mobile communication standards.Existing mobile communication standard such as comprises gsm communication standard and cdma communication standard, and correspondingly such mobile terminals can support gsm communication standard and cdma communication standard simultaneously.Particularly, such as such mobile terminals can be supported cdma communication standard by the first communication system and support gsm communication standard by second communication system, and such mobile terminals is often called as dual-card dual-standby dual-pass communication terminal.
But, in such mobile terminals, deposit and work simultaneously due to gsm communication standard and cdma communication standard, and due to GSM900 and CDMA800 frequency range close, when gsm communication standard issues the number of delivering letters, GSM900 is very large on the impact of CDMA800.Therefore, in order to ensure the communication quality of cdma communication standard, mobile communication carrier often proposes the interference-limited requirement of GSM to CDMA to such dual-card dual-standby dual-pass communication terminal.
Propose one and made GSM and the coexistent anti-jamming circuit of cdma communication mechanism, as shown in Figure 1, in every bar receiving path (such as CDMA800, CDMA900, CDMA1900, CDMA2000) of cdma communication mechanism, increased CDMA receive prevention module 6.Exemplarily, illustrate only the receiving path of CDMA800 in the first communication system in Fig. 1, it comprises radio-frequency front-end 1, CDMA800 transmission duplex module 2, CDMA800 receiver module 3, CDMA800 reception prevention module 6, radio-frequency (RF) transceiver 4 and baseband processor 5.Receiving at CDMA800 stops in module 6, under the control of the GSM_TX_EN signal from second communication system, by ground connection while of differential signal RX1 and RX2 or can send radio-frequency (RF) transceiver 4 to simultaneously.
In second communication system during GSM900 work, GSM_TX_EN signal is effective, and make CDMA800 receive the switch ground connection stoped in module 6, now radio-frequency (RF) transceiver 4 no longer receives the CDMA800 Received signal strength that CDMA800 receiver module 3 transmits; And when in second communication system, GSM900 does not work, GSM_TX_EN invalidating signal, makes CDMA800 receive and stop the switch in module 6 to connect radio-frequency (RF) transceiver 4, now radio-frequency (RF) transceiver 4 receives the CDMA800 Received signal strength that CDMA800 receiver module 3 transmits.Prevention module 6 is received owing to increasing CDMA in every bar CDMA receiving path, and due to gsm communication mechanism for time-division communication mechanism and its work time only 1/8 time slot be in emission state, therefore the every bar CDMA receiving path in the first communication system can have 7/8 time to be in normal accepting state, and only had 1/8 time to be in reception blocked state.
But, as previously mentioned, need in the every bar CDMA receiving path in the first communication system, all to increase such reception and stop module 6, receiving path between the radio-frequency front-end 1 shown in Fig. 1 and radio-frequency (RF) transceiver 4 all belongs to radio frequency path, that is, increase to receive in radio frequency path and stop module 6, this can have a negative impact to the receptivity receiving the CDMA receiving path stoping module 6 place.In addition, in every bar CDMA receiving path, all increase such reception stop module 6 not only to cause more complicated circuit structure, also cause the cost of mobile terminals to increase.
Therefore, need the method for the impact of a kind of cdma communication mechanism opposing gsm communication mechanism, it is simple, without the need to increasing circuit element in radio frequency path, can not have a negative impact to CDMA receptivity.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of anti-jamming circuit and rf processing circuitry, it is not by processing CDMA Received signal strength in the first communication system described in the GSM_TX_EN signal controlling that utilizes described second communication system and export when being in signal emission state, eliminates GSM signal and launches impact on CDMA signal receiving performance.
According to an aspect of the present invention, provide anti-jamming circuit, be applied in portable terminal, described portable terminal comprises the first communication system and second communication system, described first communication system at least supports second communication standard, described second communication system at least supports the first communication standard, and described anti-jamming circuit comprises: interference stops module, processes its Received signal strength for stoping described first communication system when described second communication system is in signal emission state.
According to one embodiment of the invention, described interference stops module to comprise first input end, the second input and output; Described first input end receives and is used to indicate the index signal that described second communication system is in signal emission state, the reception enable signal of the first communication system that the baseband processor that described second input receives the first communication system provides; Described first input end receive be used to indicate described second communication system be in the index signal of signal emission state time, the process of described output output signal stops signal, processes its Received signal strength to stop described first communication system; When described second input does not receive the reception enable signal of described first communication system, described output also outputs signal process and stops signal, processes its Received signal strength to stop described first communication system.
According to one embodiment of present invention, described interference stops the output of module to be connected with the enable signal end of the radio-frequency (RF) transceiver of described first communication system, described radio-frequency (RF) transceiver is for carrying out the conversion between radiofrequency signal and baseband signal, described first input end receive be used to indicate described second communication system be in the index signal of signal emission state time, or when described second input does not receive the reception enable signal of described first communication system, described signal transacting stops signal to be output to the enable signal end of described radio-frequency (RF) transceiver, the conversion carrying out between radiofrequency signal and baseband signal to stop described radio-frequency (RF) transceiver.
According to one embodiment of present invention, when the index signal that the described second communication system of described instruction is in signal emission state is in high level, described signal transacting stops signal to be in low level, the conversion carrying out between radiofrequency signal and baseband signal to stop described radio-frequency (RF) transceiver.
According to one embodiment of present invention, described interference stop module comprise inverter and with door, the input of described inverter connects described interference and stops the first input end of module and receive the index signal that the described second communication system of described instruction is in signal emission state, the output of described inverter is connected with the first end of door with described, describedly be connected described interference with the second end of door and stop the second input of module and the reception enable signal receiving described first communication system, describedly stop the output of module to be connected with the output of door with described interference.
According to a further aspect of the invention, provide a kind of rf processing circuitry, be applied in the first communication system of portable terminal, described portable terminal also comprises second communication system, described first communication system at least supports second communication standard, described second communication system at least supports the first communication standard, and described rf processing circuitry comprises: Receiver Module, for receiving or emitting radio frequency signal; Signal converter, for carrying out the conversion between radiofrequency signal and baseband signal; And interference stops module, for stoping described signal converter to process the radiofrequency signal that described Receiver Module receives when described second communication system is in signal emission state.
According to one embodiment of present invention, described interference stops module to comprise first input end, the second input and output; Described radio-frequency (RF) transceiver comprises enable signal end, and described enable signal end stops the output of module to be connected with described interference; Described first input end receives and is used to indicate the index signal that described second communication system is in signal emission state, the reception enable signal of the first communication system that the baseband processor that described second input receives the first communication system provides; Receive at described first input end and be used to indicate when described second communication system is in the index signal of signal emission state or when described second input does not receive the reception enable signal of described first communication system, stop the output of module to stop signal to the enable signal end output signal process of described signal converter in described interference, to stop described signal converter, the radiofrequency signal received described Receiver Module is processed.
According to one embodiment of present invention, when the index signal that the described second communication system of described instruction is in signal emission state is in high level, described signal transacting stops signal to be in low level, the conversion carrying out between radiofrequency signal and baseband signal to stop described signal converter.
According to one embodiment of present invention, described first communication standard is time-division communication standard, and preferably, described first communication standard is gsm communication standard, and described second communication standard is cdma communication standard.
Adopt according to anti-jamming circuit of the present invention and rf processing circuitry, by direct, the emission state index signal of second communication system is mixed with the reception enable signal of the first communication system, directly carry out receiving enable control in the reception Enable Pin of the radio-frequency (RF) transceiver of the first communication system, the radiofrequency signal conversion process controlling each bar receiving path in the first communication system uniformly can be made, thus without the need to all arranging hardware switch in every bar receiving path of the first communication system, can not have a negative impact to the receptivity of every bar receiving path of the first communication system thus, also the more complicated circuit structure of radio circuit part in the first communication system can not be caused.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from specification, or understand by implementing the present invention.Object of the present invention and other advantages realize by structure specifically noted in specification, claims and accompanying drawing and obtain.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, together with embodiments of the present invention for explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 illustrates the structural representation of a kind of CDMA receiving path in prior art;
Fig. 2 illustrates the schematic block diagram of the portable terminal of the application embodiment of the present invention;
Fig. 3 illustrates the signal connection diagram of the radio-frequency (RF) transceiver in prior art in the first communication system;
Fig. 4 illustrates the structural representation of the anti-jamming circuit according to the embodiment of the present invention;
Fig. 5 illustrates the signal connection diagram stoping module according to the interference of the embodiment of the present invention;
Fig. 6 illustrates the concrete structure schematic diagram stoping module according to the interference of the embodiment of the present invention; And
Fig. 7 illustrates the schematic block diagram of the rf processing circuitry according to the embodiment of the present invention.
Embodiment
In order to make the object of the embodiment of the present invention, technical scheme and advantage more obvious, describe in detail below with reference to accompanying drawings according to each embodiment of the present invention.Obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiment of the present invention.Based on the embodiment described in the present invention, other embodiments all that those skilled in the art obtain when not paying creative work all should fall within protection scope of the present invention.
Here it is to be noted that it in the accompanying drawings, identical Reference numeral is given there is identical or similar structures and function part substantially, and the repeated description of will omit about them.
Fig. 2 shows the portable terminal of the application embodiment of the present invention, and described portable terminal comprises the first communication system and second communication system, and described first communication system at least supports second communication standard, and described second communication system at least supports the first communication standard.Described first communication standard is time-division communication standard.
In one example, described first communication standard is such as gsm communication standard, and described second communication standard is such as cdma communication standard.
In addition, described first communication system at least can also support the first communication standard and second communication standard, and when described first communication system is under second communication standard communications status, the present invention is suitable for too.
In addition, described second communication system also at least can support the first communication standard and second communication standard, and when described second communication system is under the first communication standard communications status, the present invention is suitable for too.
Fig. 3 shows the signal connection diagram of the radio-frequency (RF) transceiver 4 in prior art in the first communication system.
Launch to describe by for the Signal reception path of CDMA800 in the first communication system below, but should be appreciated that the first communication system of the present invention is not limited to CDMA800, and other communication standard can be supported as required, such as CDMA900, CDMA1900 and CDMA2000.
For CDMA800 Signal reception path, after radio-frequency front-end 1, CDMA800 transmission duplex module 2 and CDMA800 receiver module 3 obtain CDMA800 reception differential signal RX1 and RX2, radio-frequency (RF) transceiver 4 processes CDMA and receives differential signal RX1 and RX2 to produce the orthogonal I signal and the Q signal that are input to baseband processor 5.
In addition, radio-frequency (RF) transceiver 4 also receives the reception enable signal RX_ON that baseband processor 5 exports, and when described reception enable signal RX_ON is effective, described radio-frequency (RF) transceiver 4 carries out radio frequency processing and the I signal of output orthogonal and Q signal to differential signal RX1 and RX2 received.
About the work of radio-frequency front-end 1, CDMA800 transmission duplex module 2, CDMA800 receiver module 3, radio-frequency (RF) transceiver 4 and baseband processor 5, do not do too much description at this, in order to avoid obscure inventive concept of the present invention.
As previously mentioned, when the gsm communication mechanism of second communication system is in GSM Signal reception state, described second communication system exports GSM_TX_EN signal.
According to the embodiment of the present invention, the radio-frequency (RF) transceiver 4 in the first communication system described in the GSM_TX_EN signal controlling utilizing described second communication system to export does not process CDMA Received signal strength.
Fig. 4 shows the structural representation of the anti-jamming circuit according to the embodiment of the present invention.Be applied in described first communication system according to the anti-jamming circuit of the embodiment of the present invention, can be included in described first communication system or also can independent of outside described first communication system.
Adverse effect to the Signal reception of described second communication standard is launched for stoping the signal of described first communication standard according to the described anti-jamming circuit of the embodiment of the present invention.Such as, described anti-jamming circuit is for stoping the adverse effect of GSM signal transmitting to CDMA Signal reception.
Described anti-jamming circuit comprises: interference stops module 40, processes its Received signal strength for stoping described first communication system when described second communication system is in signal emission state.
As shown in Figure 4, described interference stops module to comprise first input end IN1, the second input IN2 and output OUT.
Described first input end IN1 receives and is used to indicate the index signal that described second communication system is in signal emission state, such as described GSM_TX_EN signal, the reception enable signal RX_ON of the first communication system that the baseband processor 5 that described second input IN2 receives the first communication system provides.
Described first input end IN1 receive be used to indicate described second communication system be in the index signal of signal emission state time, described output OUT outputs signal process and stops signal RX_NON, processes its Received signal strength to stop described first communication system.
When described second input IN2 does not receive the reception enable signal RX_ON of described first communication system, described output OUT also outputs signal process and stops signal RX_NON, processes its Received signal strength to stop described first communication system.
Fig. 5 shows the signal connection diagram stoping module according to the interference of the embodiment of the present invention.
Described interference stops the output OUT of module to be connected with the enable signal end of the radio-frequency (RF) transceiver 4 of described first communication system, and described radio-frequency (RF) transceiver 4 is for carrying out the conversion between radiofrequency signal and baseband signal.
Receive at described first input end IN1 and be used to indicate when described second communication system is in the index signal of signal emission state or when not receiving the reception enable signal RX_ON of described first communication system at described second input IN2, described signal transacting stops signal RX_NON to be output to the enable signal end of described radio-frequency (RF) transceiver 4, the conversion carrying out between radiofrequency signal and baseband signal to stop described radio-frequency (RF) transceiver 4.
Exemplarily, because the enable signal end of radio-frequency (RF) transceiver 4 described in the cdma communication mechanism in existing described first communication system is that high level is effective, in other words, when the enable signal end of described radio-frequency (RF) transceiver 4 is high level, the normal running of described radio-frequency (RF) transceiver 4, to carry out the conversion between radiofrequency signal and baseband signal, therefore can realize when described signal transacting stops signal RX_NON to be low level stoping radio-frequency (RF) transceiver 4 to carry out the object of the conversion between radiofrequency signal and baseband signal.
On the one hand, when the gsm communication mechanism of existing described second communication system is in signal emission state, the GSM_TX_EN signal that described second communication system provides is in high level.As previously mentioned, in the case, described signal transacting stops signal RX_NON to need for low level, and the cdma communication mechanism that could realize the first communication system described in when the gsm communication mechanism of second communication system is in signal emission state does not carry out the object of radio-frequency receiving-transmitting process.
On the other hand, when the baseband processor 5 of described first communication system indicates the cdma communication mechanism operation of described first communication system, described baseband processor provides the reception enable signal RX_ON of described first communication system of 5 to be in high level.If now do not receive GSM_TX_EN signal that described second communication system provides (namely, described first input end IN1 does not receive high level), then described radio-frequency (RF) transceiver 4 should normally work, that is, the reception enable signal RX_ON of described first communication system that described baseband processor 5 provides should be transferred to the output OUT of described interference prevention module same as before, now described signal transacting stops signal RX_NON to be high level, does not stop the radio-frequency receiving-transmitting process of radio-frequency (RF) transceiver 4.
Again on the one hand, when the baseband processor 5 of described first communication system does not indicate the cdma communication mechanism operation of described first communication system, described baseband processor provides the reception enable signal RX_ON of described first communication system of 5 to be in low level.Now, described signal transacting stops signal RX_NON to need for low level, thus stops the radio-frequency receiving-transmitting process of radio-frequency (RF) transceiver 4.
Give the output and input level relation that described interference stops module in table 1 below.
Fig. 6 shows the concrete structure schematic diagram stoping module according to the interference of the embodiment of the present invention.
As shown in Figure 6, described interference stop module comprise inverter and with door, the input of described inverter connects described interference and stops the first input end IN1 of module and receive the index signal (i.e. GSM_TX_EN) that the described second communication system of described instruction is in signal emission state, the output of described inverter is connected with the first end of door with described, described connection with the second end of door describedly disturbs the second input IN2 and the reception enable signal (i.e. RX_ON) receiving described first communication system that stop module, describedly to be connected with the described output OUT stoping module that disturbs with the output of door.
Describe the anti-jamming circuit according to the embodiment of the present invention with reference to figure 2-6 above.According to the anti-jamming circuit of the embodiment of the present invention, by direct, the emission state index signal of second communication system is mixed with the reception enable signal of the first communication system, directly carry out receiving enable control in the reception Enable Pin of the radio-frequency (RF) transceiver of the first communication system, the radiofrequency signal conversion process controlled uniformly in the first communication system can be made, thus without the need to all arranging hardware switch in every bar receiving path of the first communication system.
Fig. 7 shows the rf processing circuitry 700 according to the embodiment of the present invention, it is applied in the first communication system of portable terminal, described portable terminal also comprises second communication system, described first communication system at least supports second communication standard, and described second communication system at least supports the first communication standard.Described first communication standard is time-division communication standard.
In one example, described first communication standard is such as gsm communication standard, and described second communication standard is such as cdma communication standard.
Described rf processing circuitry 700 comprises: Receiver Module 710, signal converter 720 and interference stop module 730.
Described Receiver Module 710 is for receiving or emitting radio frequency signal, such as described Receiver Module 710 can comprise the radio-frequency front-end 1 shown in Fig. 5, CDMA800 transmission duplex module 2, CDMA800 receiver module 3, and unshowned CDMA900 transmission duplex module, CDMA900 receiver module, CDMA1900 duplexer, CDMA1900 receiver module, CDMA2000 duplexer and CDMA2000 receiver module.
Signal converter 720 is for carrying out the conversion between radiofrequency signal and baseband signal, and such as described signal converter 720 can be the radio-frequency (RF) transceiver 4 described in Fig. 5.
Interference stops module 730 to process the radiofrequency signal that described Receiver Module receives for stoping described signal converter 720 when described second communication system is in signal emission state.
With reference to shown in Figure 4 and 5, described interference stops module to comprise first input end IN1, the second input IN2 and output OUT.
Described signal converter 720 comprises enable signal end RXEN, and described enable signal end RXEN is connected with the described output OUT stoping module that disturbs.
Described first input end IN1 receives and is used to indicate the index signal that described second communication system is in signal emission state, such as described GSM_TX_EN signal, the reception enable signal RX_ON of the first communication system that the baseband processor 5 that described second input IN2 receives described first communication system provides.
Receive at described first input end IN1 and be used to indicate when described second communication system is in the index signal of signal emission state or when described second input IN2 does not receive the reception enable signal of described first communication system, stop the output OUT of module to output signal process prevention signal RX_NON to the enable signal end RXEN of described signal converter 720 in described interference, to stop described signal converter 720, the radiofrequency signal received described Receiver Module is processed.
With reference to upper table 1, when the index signal that the described second communication system of described instruction is in signal emission state is in high level, described signal transacting stops signal to be in low level, the conversion carrying out between radiofrequency signal and baseband signal to stop described signal converter 720.
Shown in figure 6, described interference stop module comprise inverter and with door, the input of described inverter connects described interference and stops the first input end IN1 of module and receive the index signal (i.e. GSM_TX_EN) that described first communication system of described instruction is in signal emission state, the output of described inverter is connected with the first end of door with described, described connection with the second end of door describedly disturbs the second input IN2 and the reception enable signal (i.e. RX_ON) receiving described first communication system that stop module, describedly to be connected with the described output OUT stoping module that disturbs with the output of door.
According to the rf processing circuitry of the embodiment of the present invention, module is stoped the emission state index signal of second communication system to be mixed with the reception enable signal of the first communication system by utilizing interference, directly carry out receiving enable control at the enable signal end of the radio-frequency signal transformer of the first communication system, the radiofrequency signal conversion process controlled uniformly in the first communication system can be made, thus without the need to all arranging hardware switch in every bar receiving path (such as, CDMA800, CDMA900, CMA1900, CDMA2000) of the first communication system.
Each embodiment of the present invention is described in detail above.But, it should be appreciated by those skilled in the art that without departing from the principles and spirit of the present invention, various amendment can be carried out to these embodiments, combination or sub-portfolio, and such amendment should fall within the scope of the present invention.
Claims (11)
1. an anti-jamming circuit, be applied in portable terminal, described portable terminal comprises the first communication system and second communication system, and described first communication system at least supports second communication standard, described second communication system at least supports the first communication standard, and described anti-jamming circuit comprises:
Interference stops module, for stoping the radio-frequency (RF) transceiver of described first communication system when described second communication system is in signal emission state, the radiofrequency signal that this radio-frequency (RF) transceiver receives is processed, wherein, described interference stops module to comprise first input end, the second input and output;
Described interference stops the output of module to be connected with the enable signal end of the radio-frequency (RF) transceiver of described first communication system, described radio-frequency (RF) transceiver for carrying out the conversion between radiofrequency signal and baseband signal,
Described first input end receives and is used to indicate the index signal that described second communication system is in signal emission state, the reception enable signal of the first communication system that the baseband processor that described second input receives the first communication system provides;
Described first input end receive be used to indicate described second communication system be in the index signal of signal emission state time, the process of described output output signal stops signal, processes the radiofrequency signal that this radio-frequency (RF) transceiver receives to stop the radio-frequency (RF) transceiver of described first communication system;
When described second input does not receive the reception enable signal of described first communication system, described output also outputs signal process and stops signal, processes the radiofrequency signal that this radio-frequency (RF) transceiver receives to stop the radio-frequency (RF) transceiver of described first communication system.
2. anti-jamming circuit as claimed in claim 1, wherein,
Receive at described first input end and be used to indicate when described second communication system is in the index signal of signal emission state or when not receiving the reception enable signal of described first communication system at described second input, described signal transacting stops signal to be output to the enable signal end of described radio-frequency (RF) transceiver, the conversion carrying out between radiofrequency signal and baseband signal to stop described radio-frequency (RF) transceiver.
3. anti-jamming circuit as claimed in claim 2, wherein,
When the index signal that the described second communication system of described instruction is in signal emission state is in high level, described signal transacting stops signal to be in low level, the conversion carrying out between radiofrequency signal and baseband signal to stop described radio-frequency (RF) transceiver.
4. anti-jamming circuit as claimed in claim 3, wherein,
Described interference stop module comprise inverter and with door,
The input of described inverter connects described interference and stops the first input end of module and receive the index signal that the described second communication system of described instruction is in signal emission state, the output of described inverter is connected with the first end of door with described, describedly be connected described interference with the second end of door and stop the second input of module and the reception enable signal receiving described first communication system, describedly stop the output of module to be connected with the output of door with described interference.
5. anti-jamming circuit as claimed in claim 1, wherein, described first communication standard is time-division communication standard.
6. anti-jamming circuit as claimed in claim 6, wherein, described first communication standard is gsm communication standard, and described second communication standard is cdma communication standard.
7. a rf processing circuitry, be applied in the first communication system of portable terminal, described portable terminal also comprises second communication system, described first communication system at least supports second communication standard, described second communication system at least supports the first communication standard, and described rf processing circuitry comprises:
Receiver Module, for receiving or emitting radio frequency signal;
Signal converter, for carrying out the conversion between radiofrequency signal and baseband signal; And
Interference stops module, for stoping described signal converter to process the radiofrequency signal that described Receiver Module receives when described second communication system is in signal emission state,
Wherein, described interference stops module to comprise first input end, the second input and output;
Described signal converter comprises enable signal end, and described interference stops the output of module to be connected with the enable signal end of described signal converter;
Described first input end receives and is used to indicate the index signal that described second communication system is in signal emission state, the reception enable signal of the first communication system that the baseband processor that described second input receives the first communication system provides;
Receive at described first input end and be used to indicate when described second communication system is in the index signal of signal emission state or when described second input does not receive the reception enable signal of described first communication system, stop the output of module to stop signal to the enable signal end output signal process of described signal converter in described interference, to stop described signal converter, the radiofrequency signal that described Receiver Module receives is processed.
8. rf processing circuitry as claimed in claim 7, wherein,
When the index signal that the described second communication system of described instruction is in signal emission state is in high level, described signal transacting stops signal to be in low level, the conversion carrying out between radiofrequency signal and baseband signal to stop described signal converter.
9. rf processing circuitry as claimed in claim 8, wherein,
Described interference stop module comprise inverter and with door,
The input of described inverter connects described interference and stops the first input end of module and receive the index signal that the described second communication system of described instruction is in signal emission state, the output of described inverter is connected with the first end of door with described, describedly be connected described interference with the second end of door and stop the second input of module and the reception enable signal receiving described first communication system, describedly stop the output of module to be connected with the output of door with described interference.
10. rf processing circuitry as claimed in claim 7, wherein, described first communication standard is time-division communication standard.
11. rf processing circuitries as claimed in claim 10, wherein, described first communication standard is gsm communication standard, and described second communication standard is cdma communication standard.
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| CN107147450B (en) | 2017-05-23 | 2019-03-26 | Oppo广东移动通信有限公司 | Radio frequency interference processing method, device, storage medium and terminal |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201066839Y (en) * | 2007-06-26 | 2008-05-28 | 青岛海信移动通信技术股份有限公司 | Anti-interference communication circuit between module circuits and mobile phone with this circuit |
| CN201066904Y (en) * | 2007-06-26 | 2008-05-28 | 青岛海信移动通信技术股份有限公司 | Interface communication circuit with anti-interference capability and mobile phone applying this circuit |
| CN101499810A (en) * | 2009-03-03 | 2009-08-05 | 青岛海信移动通信技术股份有限公司 | Mutual interference preventing control method for multi-mode terminal and mutual interference preventing multi-mode terminal |
| US20120315950A1 (en) * | 2011-06-13 | 2012-12-13 | Chi Mei Communication Systems, Inc. | Dual mode mobile communication terminal |
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| CN103762997A (en) | 2014-04-30 |
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