Disclosure of Invention
The invention aims to provide a signal transceiving system and communication equipment so as to reduce the implementation cost of the signal transceiving system.
In order to achieve the purpose, the invention provides the following technical scheme:
a signal transceiving system applied to a communication device, comprising:
the system comprises a transceiver, a power amplifier connected with the transceiver, a quadruplex connected with the power amplifier and the transceiver respectively, and an antenna connected with the quadruplex;
the transceiver is used for modulating a first baseband signal to be transmitted through a carrier frequency signal of a first frequency band or a carrier frequency signal of a second frequency band; demodulating the signal of the third frequency band or the signal of the fourth frequency band output by the quadruplex to obtain a second baseband signal;
the quadroplexer is used for performing first filtering processing on a signal of a first frequency band output by the power amplifier through a first filtering module and then radiating through the antenna, or performing second filtering processing on a signal of a second frequency band output by the power amplifier through a second filtering module and then radiating through the antenna; the third filtering module is used for carrying out third filtering processing on the signals received by the antenna to obtain signals of a third frequency band, or the fourth filtering module is used for carrying out fourth filtering processing on the signals received by the antenna to obtain signals of a fourth frequency band;
the first frequency band and the third frequency band belong to a first frequency band, the second frequency band and the fourth frequency band belong to a second frequency band, and the second frequency band and the third frequency band belong to a third frequency band.
In the system, preferably, the power amplifier is connected to the first filtering module through a first interface; the second filtering module is connected with the first filtering module through a first interface and a second interface;
the first interface is configured to transmit a signal in the first frequency band, the second interface is configured to transmit a signal in a second frequency band in the second frequency band, and the third interface is configured to transmit a signal in the second frequency band in the third frequency band.
In the above system, preferably, the second interface and the third interface are connected to the second filtering module through a selection switch; the second filtering module is communicated with the second interface or the third interface through the selection switch.
In the system, preferably, the transceiver is connected to the power amplifier through a fourth interface, and the fourth interface is configured to transmit a signal modulated by the carrier frequency signal in the first frequency band, or transmit a signal modulated by the carrier frequency signal in the second frequency band.
In the system, preferably, the transceiver is connected to the power amplifier through a fifth interface and a sixth interface, where the fifth interface is configured to transmit a signal obtained by modulating the carrier frequency signal in the first frequency band, and the sixth interface is configured to transmit a signal obtained by modulating the carrier frequency signal in the second frequency band.
A communication device comprising a baseband processor and a signal transceiving system connected to a module at baseband, the signal transceiving system comprising:
the system comprises a transceiver, a power amplifier connected with the transceiver, a quadruplex connected with the power amplifier and the transceiver respectively, and an antenna connected with the quadruplex;
the transceiver is used for modulating a first baseband signal output by the baseband processor through a carrier frequency signal of a first frequency band or a carrier frequency signal of a second frequency band; demodulating the signal of the third frequency band or the signal of the fourth frequency band output by the quadruplex to obtain a second baseband signal;
the quadroplexer is used for performing first filtering processing on a signal of a first frequency band output by the power amplifier through a first filtering module and then radiating through the antenna, or performing second filtering processing on a signal of a second frequency band output by the power amplifier through a second filtering module and then radiating through the antenna; the third filtering module is used for carrying out third filtering processing on the signals received by the antenna to obtain signals of a third frequency band, or the fourth filtering module is used for carrying out fourth filtering processing on the signals received by the antenna to obtain signals of a fourth frequency band;
the first frequency band and the third frequency band belong to a first frequency band, the second frequency band and the fourth frequency band belong to a second frequency band, and the second frequency band and the third frequency band belong to a third frequency band.
In the above communication device, preferably, the power amplifier is connected to the first filtering module through a first interface; the second filtering module is connected with the first filtering module through a first interface and a second interface;
the first interface is configured to transmit a signal in the first frequency band, the second interface is configured to transmit a signal in a second frequency band in the second frequency band, and the third interface is configured to transmit a signal in the second frequency band in the third frequency band.
In the above communication device, preferably, the second interface and the third interface are connected to the second filtering module through a selection switch; the second filtering module is communicated with the second interface or the third interface through the selection switch.
Preferably, in the above communication device, the transceiver is connected to the power amplifier through a fourth interface, where the fourth interface is configured to transmit a signal obtained by modulating the carrier frequency signal in the first frequency band, or transmit a signal obtained by modulating the carrier frequency signal in the second frequency band.
Preferably, in the above communication device, the transceiver is connected to the power amplifier through a fifth interface and a sixth interface, where the fifth interface is configured to transmit a signal obtained by modulating the carrier frequency signal in the first frequency band, and the sixth interface is configured to transmit a signal obtained by modulating the carrier frequency signal in the second frequency band.
According to the scheme, the signal receiving and transmitting system and the communication equipment provided by the application have the advantages that the signal receiving and transmitting system and the communication equipment can realize the sending and receiving of the signals of the three frequency bands only through the quadruplex device, the using quantity of the multiplexers is reduced, the implementation cost of the signal receiving and transmitting system is reduced, the occupied space of the multiplexers is reduced, and the PCB bearing the multiplexers can bear more other devices.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a signal transceiving system according to an embodiment of the present invention, which may include:
a transceiver 11, a power amplifier 12, a quadplexer 13, and an antenna 14; wherein,
the power amplifier 12 is connected to the transceiver 11, the quadplexer 13 is connected to the transceiver 11 and the power amplifier 12, respectively, and the antenna 14 is connected to the quadplexer 13.
The transceiver 11 is configured to modulate a first baseband signal to be transmitted by using a carrier frequency signal of a first frequency band or a carrier frequency signal of a second frequency band; and demodulating the signal of the third frequency band or the signal of the fourth frequency band output by the quadplexer 13 to obtain a second baseband signal.
That is, the transceiver 11 is mainly used to modulate or demodulate a signal. The specific frequency band of the carrier frequency signal to be used for modulation or demodulation can be determined according to the first control command sent by the control module. The first control instruction carries identification information of the carrier frequency signal. The carrier frequency signal of which frequency band is used for modulation or demodulation can be determined according to the identification information of the carrier frequency signal carried in the first control instruction.
The power amplifier 12 is used for power amplifying the signal output by the transceiver 11.
The power amplifier 12 amplifies the signals in different frequency bands by using different power amplification parameters, which may be specifically determined according to a second control instruction sent by the control module. The second control instruction carries the frequency band identification information, and the received signal may be power-amplified using the power amplification parameter corresponding to the frequency band identification information carried in the second control instruction.
The quadplexer 13 is configured to perform first filtering processing on a signal of a first frequency band output by the power amplifier 12 through the first filtering module and then radiate the signal through the antenna 14, or perform second filtering on a signal of a second frequency band output by the power amplifier 12 through the second filtering module and then radiate the signal through the antenna 14; and performing third filtering processing on the signal received through the antenna 14 through a third filtering module to obtain a signal of the third frequency band, or performing fourth filtering processing on the signal received through the antenna through a fourth filtering module to obtain a signal of the fourth frequency band.
The quadruplex 13 filters signals of different frequency bands through the first filtering module, the second filtering module, the third filtering module and the fourth filtering module.
The quadruplex 13 carries out carrier aggregation on the filtered signals and radiates the signals out through an antenna 14.
The first frequency band and the three frequency bands belong to a first frequency band, the second frequency band and the fourth frequency band belong to a second frequency band, and the second frequency band and the third frequency band belong to a third frequency band.
That is, the first frequency band and the third frequency band have the same signal receiving frequency band (i.e., the third frequency band), and the second frequency band and the third frequency band have the same signal transmitting frequency band (i.e., the second frequency band).
The antenna 14 is used for receiving carrier aggregation signals. I.e. the signal received by the antenna 14 is a carrier aggregated signal.
In the embodiment of the invention, the receiving frequency band of the first frequency band and the receiving frequency band of the third frequency band are multiplexed into one filtering module (namely, the third filtering module) of the quadroplexer, and the transmitting frequency band of the second frequency band and the transmitting frequency band of the third frequency band are multiplexed into the other filtering module (namely, the second filtering module) of the quadroplexer, so that the signals of the three frequency bands are transmitted and received only through one quadroplexer, the using quantity of the multiplexers is reduced, the implementation cost of a signal receiving and transmitting system is reduced, the space occupied by the multiplexers is reduced, a PCB bearing the multiplexers can bear more other devices, or the volume of the PCB can be reduced.
Alternatively, the first frequency band may be a B1 frequency band, the second frequency band may be a B3 frequency band, and the third frequency band may be a B4 frequency band. Wherein,
the reception frequency band of the B1 band is: 2110MHZ-2170 MHZ;
the transmission frequency band of the B3 frequency band is: 1710MHZ-1755 MHZ;
the reception frequency band of the B4 band is: 2110MHZ-2155 MHZ;
the transmission frequency band of the B4 frequency band is: 1710MHz to 1755 MHz.
Optionally, the power amplifier 12 is connected to the first filtering module through a first interface, and is connected to the second filtering module through a second interface and a third interface; wherein,
the first interface is used for transmitting signals of a first frequency band, the second interface is used for transmitting signals of a second frequency band of the second frequency band, and the third interface is used for transmitting signals of the second frequency band of the third frequency band.
That is, for the signal of the second frequency band and the signal of the second frequency band of the third frequency band, the power amplifier 12 transmits to the second filtering module of the quadplexer through different interfaces.
Optionally, the second interface and the third interface may be connected to the second filtering module through a selection switch; the second filtering module is communicated with the second interface or the third interface through the selection switch.
The selector switch may be an alternative switch, i.e. the selector switch has two alternative paths, only one of which is in electrical communication at a time. If the second interface is connected with the second filtering module through the first path of the two selectable paths, the third interface is connected with the second filtering module through the second path of the two selectable paths.
As shown in fig. 2, a schematic diagram of a structure in which the power amplifier 12 according to the embodiment of the present invention is connected to the second filter 131 through the selection switch 21 is provided. The second interface 121 is connected with the selectable contact 211 of the selection switch 21, the third interface 122 is connected with the selectable contact 212 of the selection switch 21, when the selectable contact 211 is communicated with the fixed contact 213, the selectable contact 211 and the fixed contact 213 form a first path, and when the selectable contact 212 is communicated with the fixed contact 213, the selectable contact 212 and the fixed contact 213 form a second path.
Optionally, the transceiver 11 is connected to the power amplifier 12 through a fourth interface, where the fourth interface is used to transmit a signal modulated by a carrier frequency signal in the first frequency band, or is used to transmit a signal modulated by a carrier frequency signal in the second frequency band.
In the embodiment of the present invention, the transceiver 11 transmits the signal of the first frequency band and the signal of the second frequency band to the power amplifier 12 through one interface.
Optionally, the transceiver 11 is connected to the power amplifier 12 through a fifth interface and a sixth interface, where the fifth interface is configured to transmit a signal modulated by a carrier frequency signal in the first frequency band, and the sixth interface is configured to transmit a signal modulated by a carrier frequency signal in the second frequency band.
In the embodiment of the present invention, the transceiver 11 sends the signal in the first frequency band and the signal in the second frequency band to the power amplifier 12 through two independent interfaces, and correspondingly, the power amplifier 12 may receive the signal in the first frequency band and the signal in the second frequency band sent by the transceiver 11 through two independent interfaces, and may also receive the signal in the first frequency band and the signal in the second frequency band sent by the transceiver 11 through one interface.
An embodiment of the present invention further provides a communication device, and a schematic structural diagram of the communication device provided in the embodiment of the present invention is shown in fig. 3, where the schematic structural diagram may include:
a baseband processor 31 and a signal transceiving system 32; wherein,
the baseband processor 31 is configured to generate a first baseband signal, send the first baseband signal to the signal transceiver system 32, receive a second baseband signal sent by the signal transceiver system 32, and process the second baseband signal;
the signal transceiving system 32 includes:
a transceiver 321, a power amplifier 322, a quadplexer 323, and an antenna 324; wherein,
the power amplifier 322 is connected to the transceiver 321, the quadplexer 323 is connected to the transceiver 321 and the power amplifier 322, respectively, and the antenna 324 is connected to the quadplexer 323.
The transceiver 321 is configured to modulate the first baseband signal sent by the baseband processor 31 by using the carrier frequency signal of the first frequency band or the carrier frequency signal of the second frequency band; and demodulating the signal of the third frequency band or the signal of the fourth frequency band output by the quadplexer 323 to obtain a second baseband signal, and outputting the second baseband signal to the baseband processor 31.
That is, the transceiver 321 is mainly used to modulate or demodulate a signal. The specific frequency band used for modulation or demodulation may be determined according to a first control command sent by a control module of the communication device. The first control instruction carries identification information of the carrier frequency signal. The carrier frequency signal of which frequency band is used for modulation or demodulation can be determined according to the identification information of the carrier frequency signal carried in the first control instruction.
The power amplifier 322 is used for power amplifying the signal output from the transceiver 321.
The power amplifier 322 amplifies the signals in different frequency bands using different power amplification parameters, which may be determined according to a second control instruction sent by a control module of the communication device. The second control instruction carries the frequency band identification information, and the received signal may be power-amplified using the power amplification parameter corresponding to the frequency band identification information carried in the second control instruction.
The quadplexer 323 is configured to perform first filtering processing on a signal of a first frequency band output by the power amplifier 322 through the first filtering module and then radiate the signal through the antenna 324, or perform second filtering on a signal of a second frequency band output by the power amplifier 322 through the second filtering module and then radiate the signal through the antenna 324; and performing third filtering processing on the signal received through the antenna 324 by using a third filtering module to obtain a signal of the third frequency band, or performing fourth filtering processing on the signal received through the antenna by using a fourth filtering module to obtain a signal of the fourth frequency band.
The quadruplex 323 filters signals of different frequency bands through the first filtering module, the second filtering module, the third filtering module and the fourth filtering module.
The quadruplex 323 performs carrier aggregation on the filtered signal and radiates the signal through the antenna 324.
The first frequency band and the three frequency bands belong to a first frequency band, the second frequency band and the fourth frequency band belong to a second frequency band, and the second frequency band and the third frequency band belong to a third frequency band.
That is, the first frequency band and the third frequency band have the same signal receiving frequency band (i.e., the third frequency band), and the second frequency band and the third frequency band have the same signal transmitting frequency band (i.e., the second frequency band).
The antenna 324 is used for receiving carrier aggregation signals. I.e., the signal received by antenna 324 is a carrier aggregated signal.
In the embodiment of the invention, the receiving frequency band of the first frequency band and the receiving frequency band of the third frequency band are multiplexed into one filtering module (namely, the third filtering module) of the quadroplexer, and the transmitting frequency band of the second frequency band and the transmitting frequency band of the third frequency band are multiplexed into the other filtering module (namely, the second filtering module) of the quadroplexer, so that the signals of the three frequency bands are transmitted and received only through one quadroplexer, the using quantity of the multiplexers is reduced, the implementation cost of a signal receiving and transmitting system is reduced, the space occupied by the multiplexers is reduced, a PCB bearing the multiplexers can bear more other devices, or the volume of the PCB can be reduced. Therefore, the volume of the communication equipment can be reduced through the embodiment of the invention, or under the condition that the volume of the communication equipment is not changed, the communication equipment bears more elements, so that the communication equipment can integrate more functions.
Alternatively, the first frequency band may be a B1 frequency band, the second frequency band may be a B3 frequency band, and the third frequency band may be a B4 frequency band. Wherein,
the reception frequency band of the B1 band is: 2110MHZ-2170 MHZ;
the transmission frequency band of the B3 frequency band is: 1710MHZ-1755 MHZ;
the reception frequency band of the B4 band is: 2110MHZ-2155 MHZ;
the transmission frequency band of the B4 frequency band is: 1710MHz to 1755 MHz.
Optionally, the power amplifier 322 is connected to the first filtering module through a first interface, and is connected to the second filtering module through a second interface and a third interface; wherein,
the first interface is used for transmitting signals of a first frequency band, the second interface is used for transmitting signals of a second frequency band of the second frequency band, and the third interface is used for transmitting signals of the second frequency band of the third frequency band.
That is, for the signal of the second frequency band and the signal of the second frequency band of the third frequency band, the power amplifier 322 transmits to the second filtering module of the quadplexer through different interfaces.
Optionally, the second interface and the third interface may be connected to the second filtering module through a selection switch; the second filtering module is communicated with the second interface or the third interface through the selection switch.
The selector switch may be an alternative switch, i.e. the selector switch has two alternative paths, only one of which is in electrical communication at a time. If the second interface is connected with the second filtering module through the first path of the two selectable paths, the third interface is connected with the second filtering module through the second path of the two selectable paths.
Optionally, the transceiver 321 is connected to the power amplifier 322 through a fourth interface, where the fourth interface is used to transmit a signal modulated by a carrier frequency signal in the first frequency band, or is used to transmit a signal modulated by a carrier frequency signal in the second frequency band.
In the embodiment of the present invention, the transceiver 321 transmits the signal of the first frequency band and the signal of the second frequency band to the power amplifier 322 through one interface.
Optionally, the transceiver 321 is connected to the power amplifier 322 through a fifth interface and a sixth interface, where the fifth interface is configured to transmit a signal modulated by a carrier frequency signal in the first frequency band, and the sixth interface is configured to transmit a signal modulated by a carrier frequency signal in the second frequency band.
In this embodiment of the present invention, the transceiver 321 sends the signal in the first frequency band and the signal in the second frequency band to the power amplifier 322 through two independent interfaces, and correspondingly, the power amplifier 322 may receive the signal in the first frequency band and the signal in the second frequency band sent by the transceiver 321 through two independent interfaces, and may also receive the signal in the first frequency band and the signal in the second frequency band sent by the transceiver 321 through one interface.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.