CN219678457U - High-linearity signal transmitting device and receiving and transmitting device - Google Patents
High-linearity signal transmitting device and receiving and transmitting device Download PDFInfo
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- CN219678457U CN219678457U CN202320238910.8U CN202320238910U CN219678457U CN 219678457 U CN219678457 U CN 219678457U CN 202320238910 U CN202320238910 U CN 202320238910U CN 219678457 U CN219678457 U CN 219678457U
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Abstract
The utility model discloses a high-linearity signal transmitting device and a receiving and transmitting device, and relates to the technical field of receiving and transmitting devices. The high-linearity signal transmitting device comprises a baseband processing unit, a downlink power amplification unit and a control unit, wherein the baseband processing unit is used for generating a radio frequency downlink signal and a radio frequency reference signal; the downlink power amplification unit is connected with the baseband processing unit and is used for carrying out power amplification and linearization processing on the radio frequency downlink signal and coupling a radio frequency reference signal in the power amplification and linearization processing process; the control unit is connected with the downlink power amplification unit and is used for extracting a radio frequency reference signal from the downlink power amplification unit and carrying out power detection, and adjusting a gain value of the downlink power amplification unit for carrying out power amplification and a phase value of linearization treatment according to a power detection result; the purpose of high-linearity output signal of the whole transceiver is achieved, so that the problem that the multi-carrier signal is applied to a base station transceiver is solved.
Description
Technical Field
The present utility model relates to the field of transceiver technologies, and in particular, to a high-linearity signal transmitting device and a transceiver.
Background
Private network communication occurs earlier than public network communication and is mainly applied to some special scenarios. Such as petroleum, geology, coal, electric power, etc., and is used for a private network communication system of the self due to inconvenient utilization of a public network communication system in the field. For privacy reasons, such as army and public security, private network communication systems of the private network communication systems are respectively built for personalized services, such as civil aviation railways and rail transit.
Compared with the rapid development of public network bandwidth capacity, the private network is more concerned about the reliability and safety of network connection, such as PDT, P25, TETRA, DMR and other systems, the narrowband technology is still the mainstream of private network communication, and in order to meet the capacity requirement of the private network communication field, the multi-carrier private network signal is popularized and applied in recent years. However, the application of the multi-carrier private network signal also brings a new problem, and due to the characteristics of the power amplifier, when the multi-carrier private network signal is input, nonlinearity can be generated, and other channel signals are interfered, so that the multi-carrier signal base transceiver station equipment cannot work normally. Therefore, the high linearity signal transceiver is particularly important after the multi-carrier signal is adopted.
For nonlinear processing of multicarrier signals, there are typically both digital predistortion techniques and feed forward techniques. The digital predistortion technology can be integrally combined with the baseband technology, so that the digital predistortion technology is tried to be applied to a base station transceiver, but the technology has better correction effect on broadband signals such as LTE, 5G NR and the like, has poorer correction effect on narrowband signals such as PDT, TETRA and the like, and particularly has poorer correction effect when the carrier interval of two narrowband signals is smaller, and cannot well meet the application of base station transceiver equipment. The feedforward technology has good correction effect on the narrow-band multi-carrier signal, but due to the characteristics of the technical architecture, the feedforward technology needs to relate to complex signal generation and detection technology when being singly applied.
Disclosure of Invention
Aiming at the defects existing in the prior art, the utility model aims to provide a high-linearity signal transmitting device and a receiving and transmitting device which are used for solving the problems existing in the application of a multi-carrier signal to a base station transceiver.
According to a first aspect of the present utility model, there is provided a highly linear signal transmitting apparatus comprising:
the base band processing unit is used for generating a radio frequency downlink signal and a radio frequency reference signal;
the downlink power amplification unit is connected with the baseband processing unit and is used for carrying out power amplification and linearization processing on the radio frequency downlink signal and coupling the radio frequency reference signal in the power amplification and linearization processing process;
the control unit is connected with the downlink power amplification unit and is used for extracting a radio frequency reference signal from the downlink power amplification unit and carrying out power detection, and adjusting a gain value of the downlink power amplification unit for carrying out power amplification and a phase value of linearization processing according to a power detection result.
The high-linearity signal transmitting device extracts the coupled radio frequency reference signal from the downlink power amplification unit through the control unit, performs power detection, adjusts the gain value of the power amplification of the downlink power amplification unit and the phase value of linearization processing according to the power detection result, and achieves the purpose of high-linearity output signal of the whole receiving and transmitting device, thereby solving the problem of multi-carrier signal application to a base station transceiver.
In some embodiments, the downstream power amplifier unit includes:
the first coupler is connected with the baseband processing unit and is used for dividing the radio frequency downlink signal into a first part and a second part;
the first fixed delay device is connected with the first coupler and is used for performing delay adjustment on a first part of the radio frequency downlink signal;
the first phase adjusting circuit is connected with the first coupler and is used for adjusting the phase of the second part of the radio frequency downlink signal;
the third coupler is respectively connected with the first phase adjustment circuit and the baseband processing unit and is used for combining the second part of the radio frequency downlink signal after phase adjustment with the radio frequency reference signal to obtain a radio frequency synthesized downlink signal;
the first gain adjusting circuit is connected with the third coupler and is used for performing gain adjustment on the radio frequency synthesized downlink signal;
the first delay adjusting circuit is connected with the first gain adjusting circuit and is used for carrying out delay adjustment on the radio frequency synthesized downlink signals after gain adjustment;
The first power amplification tube is connected with the first time delay adjusting circuit and is used for carrying out power adjustment on the radio frequency synthesized downlink signals after time delay adjustment;
the Doherty circuit is connected with the first power amplifier tube and is used for amplifying the power of the radio frequency synthesized downlink signal after power adjustment to obtain a high-power radio frequency synthesized distortion downlink signal;
the fifth coupler is connected with the Doherty circuit and is used for dividing the high-power radio frequency synthesized distortion downlink signal into a first part and a second part;
the first isolator is connected with the fifth coupler and is used for isolating a first part of the high-power radio frequency synthesized distortion downlink signal;
the second fixed time delay device is connected with the first isolator and is used for performing time delay adjustment on the first part of the high-power radio frequency synthesized distortion downlink signal after isolation treatment;
the third gain adjusting circuit is connected with the fifth coupler and is used for carrying out gain adjustment on the second part of the high-power radio frequency synthesized distortion downlink signal;
The bridge is respectively connected with the first fixed time delay device and the third gain adjustment circuit and is used for combining the first part of the radio frequency downlink signal after time delay adjustment with the second part of the high-power radio frequency synthesized distortion downlink signal after gain adjustment to obtain a radio frequency synthesized distortion component signal;
the second power amplification tube is connected with the electric bridge and is used for carrying out power adjustment on the radio frequency synthesized distortion component signals;
the second coupler is connected with the second power amplification tube and is used for dividing the radio frequency synthesized distortion component signal after power adjustment into a first part and a second part, and the second part of the radio frequency synthesized distortion component signal is sent to the control unit;
the second phase adjusting circuit is connected with the second coupler and is used for carrying out phase adjustment on the first part of the radio frequency synthesized distortion component signal;
the second gain adjusting circuit is connected with the second phase adjusting circuit and is used for carrying out gain adjustment on the first part of the radio frequency synthesized distortion component signal after phase adjustment;
the second delay adjusting circuit is connected with the second gain adjusting circuit and is used for carrying out delay adjustment on the first part of the radio frequency synthesized distortion component signal after gain adjustment;
The third power amplification tube is connected with the second delay adjustment circuit and is used for adjusting the power of the first part of the radio frequency synthesized distortion component signal after delay adjustment;
the eleventh power amplification tube is connected with the twelfth power amplification tube in parallel and then is connected with the third power amplification tube, and the eleventh power amplification tube and the twelfth power amplification tube are used for amplifying the power of the first part of the radio frequency synthesized distortion component signal after power adjustment;
the sixth coupler is respectively connected with the second fixed time delay device and the eleventh power amplification tube, and is used for combining the first part of the high-power radio frequency synthesized distortion downlink signal after time delay adjustment with the first part of the radio frequency synthesized distortion component signal after power amplification to obtain a radio frequency synthesized cancellation downlink signal;
the seventh coupler is connected with the sixth coupler and is used for dividing the radio frequency synthesized downlink signal into a first part and a second part, and the seventh coupler is used for sending the second part of the radio frequency synthesized downlink signal to the control unit;
and the second isolator is connected with the seventh coupler and is used for isolating the first part of the downlink signals from the radio frequency synthesis.
In some embodiments, the Doherty circuit comprises:
the ninth power amplification tube is connected with the first power amplification tube;
a tenth power amplification tube connected between the ninth power amplification tube and the fifth coupler;
and the thirteenth power amplification tube is connected with the tenth power amplification tube in parallel.
In some embodiments, the control unit comprises:
the second average power detection module is connected with the second coupler and is used for detecting the power value of the second part of the radio frequency synthesized distortion component signal to obtain a second power value;
the radio frequency integrated mixer is connected with the seventh coupler, receives a second part of the downlink signal of the radio frequency synthesis cancellation and extracts an emergent frequency reference signal;
the reference signal filtering module is connected with the radio frequency integrated mixer and is used for filtering the radio frequency reference signal;
the reference signal logarithmic power detection module is connected with the reference signal filtering module and is used for detecting the power value of the radio frequency reference signal after the filtering processing to obtain a third power value;
The micro control chip is respectively connected with the second average power detection module and the reference signal logarithmic power detection module, and is used for comparing the second power value with a second threshold value and adjusting the phase value of the first phase adjustment circuit and the gain value of the first gain adjustment circuit according to the comparison result; and comparing the third power value with a third threshold value, and adjusting the phase value of the second phase adjusting circuit and the gain value of the second gain adjusting circuit according to the comparison result.
In some embodiments, the baseband processing unit includes:
the baseband chip is used for generating a baseband downlink signal and a reference baseband signal;
the first radio frequency transceiver is connected with the baseband chip and is used for performing radio frequency processing on the reference baseband signal to obtain a low-power radio frequency reference signal;
the fifth gain adjustment circuit is connected with the first radio frequency transceiver and is used for performing gain adjustment on the low-power radio frequency reference signal;
the fifth power amplification tube is connected with the fifth gain adjustment circuit, and is used for carrying out power adjustment on the low-power radio frequency reference signal after gain adjustment to obtain a medium-power radio frequency reference signal and sending the medium-power radio frequency reference signal to the third coupler;
The second radio frequency transceiver is connected with the baseband chip and is used for carrying out radio frequency processing on the baseband downlink signal to obtain a low-power radio frequency downlink signal.
In some embodiments, the baseband processing unit further comprises a first reference crystal oscillator, the first reference crystal oscillator being connected to the baseband chip, the first radio frequency transceiver and the second radio frequency transceiver, respectively.
In some embodiments, the system further comprises an input power control unit, wherein the input power control unit is connected between the baseband processing unit and the downlink power amplification unit, and the input power control unit is used for performing power adjustment on the radio frequency downlink signal.
In some embodiments, the input power control unit includes:
the fourth gain adjusting circuit is used for performing gain adjustment on the radio frequency downlink signal;
the fourth power amplification tube is connected with the fourth gain adjustment circuit and is used for carrying out power adjustment on the radio frequency downlink signal subjected to gain adjustment to obtain a medium-power radio frequency downlink signal;
the fourth coupler is connected with the fourth power amplification tube and is used for dividing the medium-power radio frequency downlink signal into a first part and a second part and sending the first part of the medium-power radio frequency downlink signal to the first coupler;
The first average power detection module is connected with the fourth coupler and is used for detecting the power value of the second part of the medium-power radio frequency downlink signal to obtain a first power value;
the comparator is connected with the first average power detection module and is used for comparing the first power value with a first threshold value and adjusting the bias value of the fourth gain adjustment circuit according to the comparison result.
According to a second aspect of the present utility model, there is provided a high linearity signal transceiver device, including the high linearity signal transmitting device, a duplex unit and an uplink low noise amplifying unit;
the duplex unit is connected with the high-linearity signal transmitting device and is used for transmitting downlink signals and receiving uplink signals;
the uplink low-noise amplification unit is connected between the high-linearity signal transmitting device and the duplex unit and is used for carrying out linear amplification processing on uplink signals.
In some embodiments, the uplink low noise amplifier unit includes:
the seventh power amplification tube is connected with the eighth power amplification tube in parallel, and is connected with the duplex unit, and the seventh power amplification tube and the eighth power amplification tube are used for carrying out power adjustment on uplink signals;
The band-pass filter is connected with the seventh power amplification tube and is used for filtering the uplink signal after power adjustment;
the sixth power amplification tube is connected with the band-pass filter and is used for carrying out power adjustment on the uplink signals after the filtering treatment;
and the sixth gain adjusting circuit is connected with the sixth power amplifier tube, and is used for performing gain adjustment on the uplink signal subjected to power adjustment and transmitting the uplink signal to the high-linearity signal transmitting device.
Compared with the prior art, the high-linearity signal transmitting device and the receiving-transmitting device extract the coupled radio frequency reference signal from the downlink power amplification unit through the control unit and perform power detection, and adjust the gain value of the power amplification of the downlink power amplification unit and the phase value of linearization processing according to the power detection result, so that the purpose of outputting the signal in high linearity of the whole receiving-transmitting device is achieved, and the problem that the multi-carrier signal is applied to a base station transceiver is solved.
Drawings
Fig. 1 is a schematic diagram of a high linearity signal transceiver according to an embodiment of the present utility model;
FIG. 2 is a control flow diagram of a high linearity signal transmitting apparatus according to an embodiment of the present utility model;
Fig. 3 is a control flow chart of a high linearity signal transmitting apparatus according to another embodiment of the present utility model.
Reference numerals illustrate: the device comprises a baseband processing unit 100, a baseband chip 110, a first radio frequency transceiver 120, a second radio frequency transceiver 130, a first reference crystal oscillator 140, an input power control unit 200, a first average power detection module 210, a comparator 220, a downlink power amplification unit 300, a doherty circuit 310, a control unit 400, a second average power detection module 410, a radio frequency integrated mixer 420, a second reference crystal oscillator 430, a reference signal filtering module 440, a reference signal logarithmic power detection module 450 and a micro control chip 460.
Detailed Description
The utility model is described in further detail below with reference to the accompanying drawings.
According to a first aspect of the utility model, fig. 1 schematically shows a highly linear signal transmitting device according to an embodiment of the utility model. As shown in fig. 1, the high linearity signal transmitting apparatus includes a baseband processing unit 100, an input power control unit 200, a downlink power amplifying unit 300, and a control unit 400.
The baseband processing unit 100 is configured to generate a radio frequency downlink signal and a radio frequency reference signal; the baseband processing unit includes a baseband chip 110, a first rf transceiver 120, a fifth gain adjustment circuit G5, a fifth power amplifier A5, a second rf transceiver 130, and a first reference crystal oscillator 140.
The baseband chip 110 generates baseband downlink signals meeting the requirements of a private network communication base station, and simultaneously generates a sine wave baseband signal as a reference baseband signal, and the baseband chip 110 can be realized by adopting an FPGA or a DSP, wherein the baseband downlink signals are characterized by specific carrier bandwidths, 1 … N baseband signals with arbitrary carrier intervals, preferably, the baseband chip 110 adopts XC7Z100 of Xilinx or FMQL45T900 with complex denier, the carrier bandwidth of the baseband downlink signals is 25kHz, the carrier interval can be arbitrarily set, N is 8, and the reference baseband signal is a single carrier point frequency signal.
The first rf transceiver 120 is connected to the baseband chip 100, and the first rf transceiver 120 is configured to perform rf processing on a reference baseband signal to obtain a low-power rf reference signal; illustratively, the first rf transceiver 120 is implemented using a dedicated chip, and preferably, the first rf transceiver 120 may be implemented using an integrated transceiver chip such as AD937x, CX814x, B20, or the like.
The fifth gain adjustment circuit G5 is connected to the first rf transceiver 120, and the fifth gain adjustment circuit G5 is configured to perform gain adjustment on the low-power rf reference signal; the fifth gain adjustment circuit G5 may be constructed using a dedicated device or a diode, for example.
The fifth power amplification tube A5 is connected with the fifth gain adjustment circuit G5, the fifth power amplification tube A5 is used for carrying out power adjustment on the low-power radio frequency reference signal after gain adjustment to obtain a medium-power radio frequency reference signal with power linear amplification, and the fifth power amplification tube A5 is a power amplification tube working in a class A state; the fifth power amplifier tube A5 is illustratively a GaAs amplifier tube.
The second rf transceiver 130 is connected to the baseband chip 110, and the second rf transceiver 130 is configured to perform rf processing on the baseband downlink signal to obtain a low-power rf downlink signal, and illustratively, the second rf transceiver 130 is implemented by a dedicated chip, and preferably, the first rf transceiver 120 may be implemented by an integrated transceiver chip such as an AD937x, CX814x, B20, or the like.
The first reference crystal oscillator 140 is respectively connected with the baseband chip 110, the first radio frequency transceiver 120 and the second radio frequency transceiver 130, in order to ensure that the radio frequency downlink signals and the radio frequency reference signals are in frequency synchronization, the baseband chip 110, the first radio frequency transceiver 120 and the second radio frequency transceiver 130 share the first reference crystal oscillator 140 as a reference source, and the reference crystal oscillator 1 is implemented by using a constant-temperature crystal oscillator, preferably, the constant-temperature crystal oscillator uses 30.72MHz.
The input power control unit 200 is connected between the baseband processing unit 100 and the downlink power amplification unit 300, and the input power control unit 200 is used for performing power adjustment on the radio frequency downlink signal; the input power control unit 200 includes a fourth gain adjustment circuit G4, a fourth power amplifier A4, a fourth coupler CPL4, a first average power detection module 210, and a comparator 220.
The fourth gain adjustment circuit G4 is connected to the second rf transceiver 130, and the fourth gain adjustment circuit G4 is configured to perform gain adjustment on the rf downlink signal; the fourth gain adjustment circuit G4 may be constructed using a dedicated device or a diode, for example.
The fourth power amplification tube A4 is connected with a fourth gain adjustment circuit G4, the fourth power amplification tube A4 is used for carrying out power adjustment on the radio frequency downlink signal after gain adjustment to obtain a medium-power radio frequency downlink signal with linearly amplified power, and the fourth power amplification tube A4 is a power amplification tube working in a class A state; the fourth power amplifier tube A4 is illustratively a GaAs amplifier tube.
The fourth coupler CPL4 is connected with the fourth power amplification tube A4, the fourth coupler CPL4 is grounded through a fourth resistor R4, and the fourth coupler CPL4 is used for dividing a medium-power radio frequency downlink signal into a first part and a second part; illustratively, the fourth coupler CPL4 is implemented using a microstrip line, and preferably, the fourth coupler CPL4 has a coupling degree of 20dB.
The first average power detection module 210 is connected to the fourth coupler CPL4, and the first average power detection module 210 is configured to receive the second portion of the mid-power rf downlink signal, and detect a power value of the second portion of the mid-power rf downlink signal to obtain a first power value; illustratively, the first average power detection module 210 is implemented using a dedicated device, and preferably, the first average power detection module 210 is implemented using an AD836x chip.
The comparator 220 is connected to the first average power detection module 210, where the comparator 220 is configured to compare the first power value with the first threshold value, and adjust the bias value of the fourth gain adjustment circuit G4 according to the comparison result (i.e. the difference between the first power value and the first threshold value), so as to ensure that the power of the radio frequency downlink signal passing through the fourth coupler CPL4 remains constant, which is exemplary, the comparator 220 is implemented by using an op-amp.
The downlink power amplification unit 300 is connected with the baseband processing unit 100, and the downlink power amplification unit 300 is used for performing power amplification and linearization processing on a radio frequency downlink signal and coupling a radio frequency reference signal in the power amplification and linearization processing process; the downstream power amplification unit 300 includes a first coupler CPL1, a first fixed delay1, a first phase adjustment circuit P1, a third coupler CPL3, a first gain adjustment circuit G1, a first delay adjustment circuit D1, a first power amplifier tube A1, a Doherty circuit 310, a fifth coupler CPL5, a first isolator ISO1, a second fixed delay2, a third gain adjustment circuit G3, a bridge RF1, a second power amplifier tube A2, a second coupler CPL2, a second phase adjustment circuit P2, a second gain adjustment circuit G2, a second delay adjustment circuit D2, a third power amplifier tube A3, an eleventh power amplifier tube AB3, a twelfth power amplifier tube AB4, a sixth coupler CPL6, a seventh coupler CPL6, and a second isolator ISO2.
The first coupler CPL1 is connected to the fourth coupler CPL4 in the input power control unit 200, the first coupler CPL1 is further grounded through a first resistor R1, and the first coupler CPL1 is configured to divide a first portion of the mid-power rf downlink signal (i.e., the rf downlink signal) sent from the fourth coupler CPL4 into a first portion and a second portion; illustratively, the first coupler CPL1 is implemented using a microstrip line, and preferably, the first coupler CPL1 has a coupling degree of 10dB. Of course, in other embodiments, the first coupler CPL1 may also be directly connected to the baseband processing unit 100, that is, the baseband processing unit 100 directly sends the rf downlink signal to the power amplifier unit 300, so that the input power control unit 200 is omitted.
The first fixed delay1 is connected with the first coupler CPL1, and the first fixed delay1 is used for performing delay adjustment on a first part of the radio frequency downlink signal; the first fixed retarder delay1 is illustratively implemented with a dedicated device or cable.
The first phase adjustment circuit P1 is connected to the first coupler CPL1, and the first phase adjustment circuit P1 is configured to perform phase adjustment on the second portion of the radio frequency downlink signal; the first phase adjustment circuit P1 may be constructed using a dedicated device or a diode, for example.
The third coupler CPL3 is respectively connected with the first phase adjusting circuit P1 and a fifth power amplifier tube A5 connected in the baseband processing unit 100, the third coupler CPL3 is grounded through a third resistor R3, and the third coupler CPL3 is used for combining a second part of the radio frequency downlink signal after phase adjustment with the radio frequency reference signal sent from the fifth power amplifier tube A5 to obtain a radio frequency synthesized downlink signal containing the radio frequency reference signal and the radio frequency downlink signal; illustratively, the third coupler CPL3 is implemented using a microstrip line, preferably the third coupler CPL3 has a coupling degree of 10dB.
The first gain adjustment circuit G1 is connected to the third coupler CPL3, and the first gain adjustment circuit G1 is configured to perform gain adjustment on the rf synthesized downlink signal; the first gain adjustment circuit G1 may be constructed using a dedicated device or a diode, for example.
The first delay adjusting circuit D1 is connected with the first gain adjusting circuit G1, and the first delay adjusting circuit D1 is used for carrying out delay adjustment on the radio frequency synthesized downlink signals after gain adjustment; the first delay adjusting circuit D1 is illustratively implemented with a varactor diode.
The first power amplification tube A1 is connected with the first delay adjustment circuit D1, the first power amplification tube A1 is used for carrying out power adjustment on the radio frequency synthesized downlink signal after delay adjustment, and the first power amplification tube A1 is a power amplification tube working in a class A state; the first power amplifier tube A1 is illustratively a GaAs amplifier tube.
The Doherty circuit 310 is connected to the first power amplifier tube A1, and the Doherty circuit 310 is configured to power amplify the power-adjusted rf synthesized downlink signal to obtain a power-amplified rf synthesized distorted downlink signal.
The Doherty circuit 310 comprises a ninth power amplifier tube AB1, a tenth power amplifier tube AB2 and a thirteenth power amplifier tube C1, wherein the ninth power amplifier tube AB1 is connected with the first power amplifier tube A1; the tenth power amplification tube AB2 is connected with the ninth power amplification tube AB1, and the thirteenth power amplification tube C1 is connected with the tenth power amplification tube AB2 in parallel; the ninth power amplifier tube AB1 and the tenth power amplifier tube AB2 are power amplifier tubes working in the AB type state, the thirteenth power amplifier tube C1 is a power amplifier tube working in the C type state, and exemplary, the ninth power amplifier tube AB1 is a GaAs power amplifier tube or an LDMOS power amplifier tube, and the tenth power amplifier tube AB2 and the thirteenth power amplifier tube C1 are LDMOS or GaN power amplifier tubes.
The fifth coupler CPL5 is connected with a tenth power amplifier tube AB2 in the Doherty circuit 310, the fifth coupler CPL5 is grounded through a fifth resistor R5, and the fifth coupler CPL5 is used for dividing a high-power radio frequency synthesized distortion downlink signal into a first part and a second part; illustratively, the fifth coupler CPL5 is implemented using a microstrip line, and preferably, the fifth coupler CPL5 has a coupling degree of 30dB.
The first isolator ISO1 is connected to the fifth coupler CPL5, and the first isolator ISO1 is configured to perform an isolation output process on a first portion of the high-power rf synthesized distortion downlink signal.
The second fixed delay2 is connected with the first isolator ISO1, and the second fixed delay2 is used for performing delay adjustment on the first part of the high-power radio frequency synthesized distortion downlink signal after isolation treatment; the second fixed retarder delay2 is illustratively implemented with a dedicated device or cable.
The third gain adjustment circuit G3 is connected to the fifth coupler CPL5, and the third gain adjustment circuit G3 is configured to perform gain adjustment on the second portion of the high-power rf synthesized distortion downlink signal; the third gain adjustment circuit G3 may be constructed using a dedicated device or a diode, for example.
The bridge RF1 is respectively connected with the first fixed delay1 and the third gain adjustment circuit G3, the bridge RF1 is also grounded through an eighth resistor R8, and the bridge RF1 is used for combining a first part of the radio frequency downlink signal after delay adjustment with a second part of the high-power radio frequency synthesized distortion downlink signal after gain adjustment to offset the radio frequency downlink signal in the high-power radio frequency synthesized distortion downlink signal, so that a radio frequency synthesized distortion component signal containing a radio frequency reference signal is obtained; illustratively, bridge RF1 employs a 3dB bridge.
The second power amplification tube A2 is connected with the electric bridge RF1, and the second power amplification tube A2 is used for carrying out power adjustment on the radio frequency synthesized distortion component signals; the second power amplifier tube A2 is a power amplifier tube working in a class a state, and the second power amplifier tube A2 is a GaAs power amplifier tube.
The second coupler CPL2 is connected with the second power amplifier tube A2, the second coupler CPL2 is also grounded through a second resistor R2, and the second coupler CPL2 is used for dividing the radio frequency synthesized distortion component signal after power adjustment into a first part and a second part; illustratively, the second coupler CPL2 is implemented using a microstrip line, and preferably, the second coupler CPL2 has a coupling degree of 10dB.
The second phase adjustment circuit P2 is connected to the second coupler CPL2, and the second phase adjustment circuit P2 is configured to perform phase adjustment on the first portion of the rf synthesized distortion component signal; the second phase adjustment circuit P2 may be built using a dedicated device or a diode, for example.
The second gain adjustment circuit G2 is connected to the second phase adjustment circuit P2, and the second gain adjustment circuit G2 is configured to perform gain adjustment on a first portion of the phase-adjusted rf synthesized distortion component signal; the second gain adjustment circuit G2 may be constructed using a dedicated device or a diode, for example.
The second delay adjustment circuit D2 is connected with the second gain adjustment circuit G2, and the second delay adjustment circuit D2 is used for performing delay adjustment on the first part of the radio frequency synthesized distortion component signal after gain adjustment; the second delay adjusting circuit D2 is illustratively implemented with a varactor diode.
The third power amplification tube A3 is connected with the second delay adjustment circuit D2, and the third power amplification tube A3 is used for carrying out power adjustment on the first part of the radio frequency synthesized distortion component signal after delay adjustment; the third power amplifier tube A3 is a power amplifier tube working in a class a state, and the third power amplifier tube A3 is a GaAs power amplifier tube.
The eleventh power amplification tube AB3 and the twelfth power amplification tube AB4 are connected in parallel and then connected with the third power amplification tube A3, and the eleventh power amplification tube AB3 and the twelfth power amplification tube AB4 are used for amplifying the power of the first part of the radio frequency synthesized distortion component signal after power adjustment; the eleventh power amplifier tube AB3 and the twelfth power amplifier tube AB4 are power amplifier tubes working in the AB type state, and exemplary, the eleventh power amplifier tube AB3 and the twelfth power amplifier tube AB4 are GaAs power amplifier tubes or LDMOS power amplifier tubes.
The sixth coupler CPL6 is respectively connected with the second fixed delay2 and the eleventh power amplification tube AB3, the sixth coupler CPL6 is also grounded through a sixth resistor R6, and the sixth coupler CPL6 is used for carrying out combining and cancellation on the first part of the high-power radio frequency synthesized distortion downlink signal after delay adjustment and the first part of the radio frequency synthesized distortion component signal after power amplification to obtain a radio frequency synthesized cancellation downlink signal containing a radio frequency reference signal; illustratively, the sixth coupler CPL6 is implemented using a microstrip line, and preferably, the sixth coupler CPL6 has a coupling degree of 10dB.
The seventh coupler CPL7 is connected with the sixth coupler CPL6, the seventh coupler CPL7 is grounded through a seventh resistor R7, and the seventh coupler CPL7 is used for dividing the radio frequency synthesis cancellation downlink signal into a first part and a second part; illustratively, the seventh coupler CPL7 is implemented using a microstrip line, and preferably, the seventh coupler CPL7 has a coupling degree of 30dB.
The second isolator ISO2 is connected to the seventh coupler CPL7, and the second isolator ISO2 is configured to perform isolation output processing on the first portion of the cancellation downlink signal by radio frequency synthesis.
The control unit 400 is respectively connected with the downlink power amplification unit 300, and the control unit 400 is used for extracting a radio frequency reference signal from the downlink power amplification unit 300, performing power detection, and adjusting a gain value of the downlink power amplification unit 300 for power amplification and a phase value of linearization processing according to a power detection result; the control unit 400 includes a second average power detection module 410, a radio frequency integrated mixer 420, a second reference crystal oscillator 430, a reference signal filtering module 440, a reference signal logarithmic power detection module 450, and a micro control chip 460.
The second average power detection module 410 is connected to the second coupler CPL2, and the second average power detection module 410 is configured to receive the second portion PWR1 of the rf synthesized distortion component signal sent by the second coupler CPL2 and perform power value detection, to obtain a second power value; illustratively, the second average power detection module 410 is implemented using an AD836x chip.
The rf integrated mixer 420 is connected to the seventh coupler CPL7, and the rf integrated mixer 420 is further connected to the second reference crystal oscillator 430, where the rf integrated mixer 420 is configured to receive the second portion of the rf synthesized cancellation downlink signal sent by the seventh coupler CPL7, and extract an rf reference signal in the rf synthesized cancellation downlink signal; illustratively, the RF integrated mixer 420 employs an ECR865x chip and the second reference crystal 430 employs 40MHz in frequency.
The reference signal filtering module 440 is connected to the rf integrated mixer 420, and the reference signal filtering module 440 is configured to perform filtering processing on the rf reference signal; illustratively, the reference signal filtering module 440 is implemented using a bandpass filter device.
The reference signal logarithmic power detection module 450 is connected with the reference signal filtering module 440, and the reference signal logarithmic power detection module 450 is used for detecting the power value of the radio frequency reference signal after the filtering processing to obtain a third power value; the reference signal log power detection module 450 illustratively employs an AWE253 or AD831x chip.
The micro control chip 460 is respectively connected with the second average power detection module 410 and the reference signal logarithmic power detection module 450, and the micro control chip 460 is used for comparing the second power value with a second threshold value and adjusting the phase value of the first phase adjustment circuit P1 and the gain value of the first gain adjustment circuit G1 according to the comparison result; and comparing the third power value with a third threshold value, and adjusting the phase value of the second phase adjusting circuit P2 and the gain value of the second gain adjusting circuit G2 according to the comparison result, extracting the coupled radio frequency reference signal from the downlink power amplifying unit 300 by the control unit 400, performing power detection, and adjusting the gain value of the power amplification and the phase value of the linearization processing of the downlink power amplifying unit according to the power detection result, thereby achieving the purpose of outputting the signal in a high linearity of the whole transceiver device, and further solving the problem that the multi-carrier signal is applied to the transceiver of the base station; in addition, the micro control chip 460 is further connected to the baseband chip 110 in the baseband processing unit 100 and the comparator 220 in the input power control unit 200, the baseband chip 110 transmits the working frequency information of the rf downlink signal and the frequency information of the rf reference signal to the micro control chip 460, the micro control chip 460 controls the rf integrated mixer 420 according to the frequency information of the rf reference signal, extracts the outgoing frequency reference signal by setting the same frequency value of the rf reference signal, and controls the comparator 220 according to the working frequency information of the rf downlink signal, and sets the first threshold value of the comparator 220; illustratively, the micro-control chip 460 is a DSP, and preferably, the micro-control chip 460 is a TMS320F28xx chip or a full-lineage chip.
According to a second aspect of the present utility model, fig. 2 schematically shows a control flow of a highly linear signal transmitting apparatus according to an embodiment of the present utility model. As shown in fig. 2, the control flow of the high linearity signal transmitting device is used for controlling the high linearity signal transmitting device, and includes:
s100, generating a radio frequency reference signal according to the lowest frequency point, the highest frequency point and the radio frequency reference signal frequency offset value of the radio frequency downlink signal working frequency band;
in this embodiment, generating the radio frequency reference signal according to the lowest frequency point, the highest frequency point and the radio frequency reference signal frequency offset value of the radio frequency downlink signal working frequency band includes:
determining a lowest frequency point F1 and a highest frequency point F2 of a radio frequency downlink signal working frequency band, and a radio frequency reference signal frequency offset value delta F;
calculating according to a formula ((F1+F2)/2) +delta F to obtain a radio frequency reference signal frequency value;
and generating a radio frequency reference signal according to the calculated frequency value, and generating a radio frequency downlink signal according to actual requirements.
S200, performing power amplification and linearization processing on the radio frequency downlink signal, and coupling a radio frequency reference signal in the power amplification and linearization processing process;
in this embodiment, performing power amplification and linearization processing on the radio frequency downlink signal, and coupling the radio frequency reference signal during the power amplification and linearization processing includes:
Dividing the radio frequency downlink signal into a first part and a second part;
performing time delay adjustment on a first part of the radio frequency downlink signal;
performing phase adjustment on a second part of the radio frequency downlink signal;
combining the second part of the radio frequency downlink signal after phase adjustment with the radio frequency reference signal to obtain a radio frequency synthesized downlink signal;
performing gain adjustment on the radio frequency synthesized downlink signal;
performing time delay adjustment on the radio frequency synthesized downlink signal after gain adjustment;
performing power adjustment on the radio frequency synthesized downlink signal after time delay adjustment;
carrying out power amplification on the radio frequency synthesized downlink signal subjected to power adjustment to obtain a high-power radio frequency synthesized distortion downlink signal;
dividing a high-power radio frequency synthesized distortion downlink signal into a first part and a second part;
performing isolation processing on a first part of the high-power radio frequency synthesized distortion downlink signal;
performing time delay adjustment on a first part of the high-power radio frequency synthesized distortion downlink signal after the isolation treatment;
gain adjustment is carried out on a second part of the high-power radio frequency synthesized distortion downlink signal;
combining the first part of the radio frequency downlink signal after time delay adjustment with the second part of the high-power radio frequency synthesized distortion downlink signal after gain adjustment to obtain a radio frequency synthesized distortion component signal;
Performing power adjustment on the radio frequency synthesized distortion component signal;
dividing the power-adjusted radio frequency synthesized distortion component signal into a first portion and a second portion;
phase adjusting a first portion of the radio frequency synthesized distortion component signal;
gain adjustment is carried out on a first part of the radio frequency synthesized distortion component signal after phase adjustment;
performing time delay adjustment on a first part of the radio frequency synthesized distortion component signal after gain adjustment;
performing power adjustment on a first part of the radio frequency synthesized distortion component signal after time delay adjustment;
amplifying the power of the first part of the radio frequency synthesized distortion component signal after the power adjustment;
combining the first part of the high-power radio frequency synthesis distortion downlink signal after time delay adjustment with the first part of the radio frequency synthesis distortion component signal after power amplification to obtain a radio frequency synthesis distortion downlink signal;
the radio frequency synthesis cancellation downlink signal is divided into a first portion and a second portion.
And S300, extracting a radio frequency reference signal from the power amplification and linearization process, performing power detection, and adjusting a gain value of the power amplification and a phase value of the linearization process according to a power detection result.
In the present embodiment, the steps of extracting the radio frequency reference signal from the power amplifying and linearizing process and performing power detection, and adjusting the gain value of the power amplifying and linearizing process and the phase value of the linearizing process according to the power detection result include:
detecting a power value of a second part of the radio frequency synthesized distortion component signal to obtain a second power value;
detecting the power value of the radio frequency reference signal after the filtering processing to obtain a third power value
Comparing the second power value with a second threshold value, and adjusting a phase value of the second part of the radio frequency downlink signal for phase adjustment and a gain value of the radio frequency synthesized downlink signal for gain adjustment according to a comparison result; and comparing the third power value with a third threshold value, and adjusting the phase value of the first part of the radio frequency synthesized distortion component signal subjected to phase adjustment and the gain value of the first part of the radio frequency synthesized distortion component signal subjected to gain adjustment according to the comparison result.
In one exemplary scenario, as shown in fig. 3, comprising:
the baseband processing unit 100 determines a lowest frequency point F1 and a highest frequency point F2 of a downlink signal working frequency band, and a radio frequency reference signal frequency offset value delta F;
The baseband chip 110 in the baseband processing unit 100 calculates a frequency value of the radio frequency reference signal according to the formula ((f1+f2)/2) +Δf;
the baseband processing unit 100 generates a radio frequency reference signal according to the calculated frequency value; simultaneously generating a radio frequency downlink signal according to actual requirements;
the control unit 400 obtains a frequency value of the radio frequency reference signal transmitted by the baseband processing unit 100;
the micro control chip 460 in the control unit 400 controls the radio frequency integrated mixer 420, and extracts the emergent frequency reference signal by setting the same frequency value of the radio frequency reference signal;
the radio frequency reference signal is subjected to signal filtering and logarithmic power detection to obtain a third power value of the radio frequency reference signal;
if the third power value is smaller than the third threshold value, if yes, the phase value of the second phase adjusting circuit P2 and the gain value of the second gain adjusting circuit G2 are changed;
in addition, the downlink power amplifier unit 300 inputs a radio frequency downlink signal and a radio frequency reference signal;
the second coupler CPL2 in the downstream power amplifier unit 300 extracts the rf synthesized distortion component signal PWR1;
PWR1 passes through the second average power detection module 410 of the control unit 400 to obtain a second power value of the distortion component signal;
If the second power value is smaller than the second threshold value, if yes, the phase value of the first phase adjusting circuit P1 and the gain value of the first gain adjusting circuit G1 are changed.
According to a third aspect of the present utility model, with continued reference to fig. 1, fig. 1 schematically shows a highly linear signal transceiving apparatus according to an embodiment of the present utility model. As shown in fig. 1, the high linearity signal transceiver device includes the high linearity signal transmitting device, the duplex unit 500 and the uplink low noise amplifier unit 600;
the duplex unit 500 is connected with the high-linearity signal transmitting device, and the duplex unit 500 is used for performing downlink filtering on the radio frequency synthesized cancellation downlink signal after isolation output, then transmitting the high-linearity downlink signal outwards, receiving the uplink signal, and performing uplink filtering on the uplink signal; illustratively, the duplexing unit 500 is a cavity duplexer.
The uplink low noise amplification unit 600 is connected between the high linearity signal transmitting device and the duplex unit 500, and the uplink low noise amplification unit 600 is used for performing linear amplification processing on the uplink signal; the uplink low-noise amplification unit 600 includes a seventh power amplification tube A7, an eighth power amplification tube A8, a band-pass filter BP1, a sixth power amplification tube A6, and a sixth gain adjustment circuit G6.
The seventh power amplification tube A7 is connected with the eighth power amplification tube A8 in parallel, the seventh power amplification tube A7 is connected with the duplex unit 500, and the seventh power amplification tube A7 and the eighth power amplification tube A8 are used for carrying out power adjustment on uplink signals; the seventh power amplification tube A7 and the eighth power amplification tube A8 are power amplification tubes with working states of A class, and the seventh power amplification tube A7 and the eighth power amplification tube A8 are GaAs power amplification tubes.
The band-pass filter BP1 is connected to the seventh power amplifier A7, and the band-pass filter BP1 is configured to perform filtering processing on the uplink signal after power adjustment.
The sixth power amplification tube A6 is connected with the band-pass filter BP1, and the sixth power amplification tube A6 is used for carrying out power adjustment on the uplink signals after the filtering treatment; the sixth power amplifier tube A6 is a power amplifier tube with a working state of class a, and the sixth power amplifier tube A6 is a GaAs power amplifier tube.
The sixth gain adjustment circuit G6 is connected to the sixth power amplifier A6, where the sixth gain adjustment circuit G6 is configured to perform gain adjustment on the uplink signal after power adjustment, send the uplink signal to the high-linearity signal transmitting device, enter the uplink channel of the second radio frequency transceiver 130 of the baseband processing unit 100, and enter the baseband chip 110 to complete processing of the uplink signal after signal conversion; illustratively, the gain adjustment circuit G6 may be built using dedicated devices or diodes.
What has been described above is merely some embodiments of the present utility model. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the utility model.
Claims (10)
1. A highly linear signal transmitting apparatus, comprising:
the base band processing unit is used for generating a radio frequency downlink signal and a radio frequency reference signal;
the downlink power amplification unit is connected with the baseband processing unit and is used for carrying out power amplification and linearization processing on the radio frequency downlink signal and coupling the radio frequency reference signal in the process of the power amplification and linearization processing;
the control unit is connected with the downlink power amplification unit and is used for extracting the radio frequency reference signal from the downlink power amplification unit and carrying out power detection, and adjusting a gain value of the downlink power amplification unit for power amplification and a phase value of linearization processing according to a power detection result.
2. The apparatus according to claim 1, wherein the downstream power amplifier unit includes:
The first coupler is connected with the baseband processing unit and is used for dividing the radio frequency downlink signal into a first part and a second part;
the first fixed time delay device is connected with the first coupler and is used for performing time delay adjustment on a first part of the radio frequency downlink signal;
the first phase adjusting circuit is connected with the first coupler and is used for adjusting the phase of the second part of the radio frequency downlink signal;
the third coupler is respectively connected with the first phase adjusting circuit and the baseband processing unit and is used for combining the second part of the radio frequency downlink signal after phase adjustment with the radio frequency reference signal to obtain a radio frequency synthesized downlink signal;
the first gain adjusting circuit is connected with the third coupler and is used for performing gain adjustment on the radio frequency synthesized downlink signal;
the first delay adjusting circuit is connected with the first gain adjusting circuit and is used for carrying out delay adjustment on the radio frequency synthesized downlink signals after gain adjustment;
The first power amplification tube is connected with the first delay adjustment circuit and is used for carrying out power adjustment on the radio frequency synthesized downlink signals after delay adjustment;
the Doherty circuit is connected with the first power amplifier tube and is used for amplifying the power of the radio frequency synthesized downlink signal after power adjustment to obtain a high-power radio frequency synthesized distortion downlink signal;
the fifth coupler is connected with the Doherty circuit and is used for dividing the high-power radio frequency synthesized distortion downlink signal into a first part and a second part;
the first isolator is connected with the fifth coupler and is used for isolating a first part of the high-power radio frequency synthesized distortion downlink signal;
the second fixed time delay device is connected with the first isolator and is used for performing time delay adjustment on the first part of the high-power radio frequency synthesized distortion downlink signal after isolation treatment;
the third gain adjustment circuit is connected with the fifth coupler and is used for performing gain adjustment on the second part of the high-power radio frequency synthesized distortion downlink signal;
The bridge is respectively connected with the first fixed time delay device and the third gain adjustment circuit and is used for combining a first part of the radio frequency downlink signal after time delay adjustment with a second part of the high-power radio frequency synthesis distortion downlink signal after gain adjustment to obtain a radio frequency synthesis distortion component signal;
the second power amplification tube is connected with the electric bridge and is used for carrying out power adjustment on the radio frequency synthesized distortion component signals;
the second coupler is connected with the second power amplification tube and is used for dividing the radio frequency synthesized distortion component signal after power adjustment into a first part and a second part, and the second part of the radio frequency synthesized distortion component signal is sent to the control unit;
a second phase adjustment circuit connected to the second coupler, the second phase adjustment circuit configured to phase-adjust the first portion of the rf synthesized distortion component signal;
the second gain adjustment circuit is connected with the second phase adjustment circuit and is used for performing gain adjustment on the first part of the radio frequency synthesized distortion component signal after phase adjustment;
The second delay adjusting circuit is connected with the second gain adjusting circuit and is used for carrying out delay adjustment on the first part of the radio frequency synthesized distortion component signal after gain adjustment;
the third power amplification tube is connected with the second delay adjustment circuit and is used for carrying out power adjustment on the first part of the radio frequency synthesized distortion component signal after delay adjustment;
the eleventh power amplification tube and the twelfth power amplification tube are connected in parallel and then connected with the third power amplification tube, and the eleventh power amplification tube and the twelfth power amplification tube are used for amplifying the power of the first part of the radio frequency synthesized distortion component signal after power adjustment;
the sixth coupler is respectively connected with the second fixed time delay device and the eleventh power amplification tube, and is used for combining the first part of the high-power radio frequency synthesis distortion downlink signal after time delay adjustment with the first part of the radio frequency synthesis distortion component signal after power amplification to obtain a radio frequency synthesis cancellation downlink signal;
A seventh coupler, connected to the sixth coupler, the seventh coupler being configured to divide the radio frequency synthesized cancellation downlink signal into a first portion and a second portion, and the seventh coupler sending the second portion of the radio frequency synthesized cancellation downlink signal to the control unit;
and the second isolator is connected with the seventh coupler and is used for isolating the first part of the radio frequency synthesized cancellation downlink signal.
3. The high linearity signal transmitting device of claim 2, wherein said Doherty circuit comprises:
the ninth power amplification tube is connected with the first power amplification tube;
a tenth power amplification tube connected between the ninth power amplification tube and the fifth coupler;
and the thirteenth power amplification tube is connected with the tenth power amplification tube in parallel.
4. The high linearity signal transmitting device of claim 2, wherein the control unit comprises:
the second average power detection module is connected with the second coupler and is used for detecting the power value of the second part of the radio frequency synthesized distortion component signal to obtain a second power value;
The radio frequency integrated mixer is connected with the seventh coupler, and receives the second part of the radio frequency synthesized cancellation downlink signal and extracts the radio frequency reference signal;
the reference signal filtering module is connected with the radio frequency integrated mixer and is used for filtering the radio frequency reference signal;
the reference signal logarithmic power detection module is connected with the reference signal filtering module and is used for detecting the power value of the radio frequency reference signal after the filtering processing to obtain a third power value;
the micro control chip is respectively connected with the second average power detection module and the reference signal logarithmic power detection module, and is used for comparing the second power value with a second threshold value and adjusting the phase value of the first phase adjustment circuit and the gain value of the first gain adjustment circuit according to a comparison result; and comparing the third power value with a third threshold value, and adjusting the phase value of the second phase adjusting circuit and the gain value of the second gain adjusting circuit according to a comparison result.
5. The high linearity signal transmitting device of claim 2, wherein the baseband processing unit comprises:
the base band chip is used for generating a base band downlink signal and a reference base band signal;
the first radio frequency transceiver is connected with the baseband chip and is used for performing radio frequency processing on the reference baseband signal to obtain a low-power radio frequency reference signal;
a fifth gain adjustment circuit, connected to the first rf transceiver, for performing gain adjustment on the low-power rf reference signal;
the fifth power amplification tube is connected with the fifth gain adjustment circuit, and is used for carrying out power adjustment on the low-power radio frequency reference signal after gain adjustment to obtain a medium-power radio frequency reference signal, and sending the medium-power radio frequency reference signal to the third coupler;
the second radio frequency transceiver is connected with the baseband chip and is used for carrying out radio frequency processing on the baseband downlink signal to obtain a low-power radio frequency downlink signal.
6. The device of claim 5, wherein the baseband processing unit further comprises a first reference crystal oscillator, the first reference crystal oscillator being coupled to the baseband chip, the first radio frequency transceiver, and the second radio frequency transceiver, respectively.
7. The device according to claim 5, further comprising an input power control unit connected between the baseband processing unit and the downstream power amplifier unit, wherein the input power control unit is configured to power-adjust the rf downstream signal.
8. The high linearity signal transmitting device of claim 7, wherein said input power control unit comprises:
the fourth gain adjustment circuit is used for performing gain adjustment on the radio frequency downlink signal;
the fourth power amplification tube is connected with the fourth gain adjustment circuit and is used for carrying out power adjustment on the radio frequency downlink signal after gain adjustment to obtain a medium-power radio frequency downlink signal;
the fourth coupler is connected with the fourth power amplification tube and is used for dividing the medium-power radio frequency downlink signal into a first part and a second part and sending the first part of the medium-power radio frequency downlink signal to the first coupler;
The first average power detection module is connected with the fourth coupler and is used for detecting the power value of the second part of the medium-power radio frequency downlink signal to obtain a first power value;
the comparator is connected with the first average power detection module and is used for comparing the first power value with a first threshold value and adjusting the bias value of the fourth gain adjustment circuit according to a comparison result.
9. A high linearity signal receiving and transmitting device, characterized by comprising the high linearity signal transmitting device, a duplex unit and an uplink low noise amplifying unit according to any one of claims 1-8;
the duplex unit is connected with the high-linearity signal transmitting device and is used for transmitting downlink signals and receiving uplink signals;
the uplink low-noise amplification unit is connected between the high-linearity signal transmitting device and the duplex unit and is used for carrying out linear amplification processing on the uplink signal.
10. The high linearity signal transceiving apparatus according to claim 9, wherein said upstream low noise amplifier unit comprises:
The seventh power amplification tube is connected with the eighth power amplification tube in parallel, the seventh power amplification tube is connected with the duplex unit, and the seventh power amplification tube and the eighth power amplification tube are used for adjusting the power of the uplink signal;
the band-pass filter is connected with the seventh power amplifier tube and is used for filtering the uplink signal after power adjustment;
the sixth power amplification tube is connected with the band-pass filter and is used for carrying out power adjustment on the uplink signals after filtering treatment;
and the sixth gain adjustment circuit is connected with the sixth power amplification tube, and is used for performing gain adjustment on the uplink signal subjected to power adjustment and transmitting the uplink signal to the high-linearity signal transmitting device.
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