CN212572486U - Radio frequency power amplifier, radio frequency transceiver and terminal - Google Patents
Radio frequency power amplifier, radio frequency transceiver and terminal Download PDFInfo
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- CN212572486U CN212572486U CN202021280910.7U CN202021280910U CN212572486U CN 212572486 U CN212572486 U CN 212572486U CN 202021280910 U CN202021280910 U CN 202021280910U CN 212572486 U CN212572486 U CN 212572486U
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Abstract
The embodiment of the utility model provides a radio frequency power amplifier, this radio frequency power amplifier includes: the device comprises an intermediate frequency input port, an intermediate frequency amplifier, a first intermediate frequency selection switch, at least one first intermediate frequency transmission port, a second intermediate frequency switch, a second intermediate frequency transmission port and a second intermediate frequency receiving port; the first intermediate frequency selection switch is used for selectively communicating the intermediate frequency amplifier with a first intermediate frequency transmission port or a second intermediate frequency transmission port according to a preset control signal; the input end and the output end of the second intermediate frequency switch are respectively and electrically connected with the second intermediate frequency receiving port and the second intermediate frequency transmission port; the second intermediate frequency switch is used for according to predetermined control signal, selects to receive port and second intermediate frequency transmission port intercommunication with the second intermediate frequency, the embodiment of the utility model provides a radio frequency power amplifier can save the radio frequency device, improves the design degree of freedom, reduces the radio frequency line loss, improves the radio frequency performance, reduce cost.
Description
Technical Field
The embodiment of the utility model provides a relate to the electronic circuit field, especially relate to a radio frequency power amplifier, radio frequency transceiver and terminal.
Background
The 4G mobile phone radio frequency circuit based on the Phase2 scheme generally includes a radio frequency Transceiver (RF Transceiver), a multimode multi-power amplifier (3G/4G MMMB PA), a duplexer and a radio frequency front-end module (TRX-FEM), and has a simple structure and a compact layout, and is currently the mainstream 4G mobile phone radio frequency solution in the market.
In the prior art, a multimode multi-power amplifier has five low-frequency five-intermediate-frequency four-high-frequency TX ports and two high-frequency RX ports, and an operator has exactly five intermediate-frequency bands of B1, B2, B3, B4, and B34(B39), which can exactly correspond to the five intermediate-frequency TX ports in the multimode multi-power amplifier, however, since the B34(B39) band adopts a Time Division Duplex (TDD) system, TX and RX loops need to be respectively used for the TX and RX ports of the multimode multi-power amplifier, because the multimode multi-power amplifier has only a high-frequency RX port, and has no intermediate-frequency RX port, and the number of the ports is insufficient, an external dual-port radio frequency switch is required to meet the input and output of the B34(B39) band.
Through increasing a dual-port radio frequency switch, extra increase with the radio frequency device to increased the radio frequency cost and walked the line degree of difficulty, reduced the radio frequency performance, can't satisfy current 4G market commonality strong, the function is many, and is with low costs, the requirement of a plurality of frequency channels of a mainboard integration.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a pair of radio frequency power amplifier, radio frequency transceiver and terminal, aim at utilize unnecessary high frequency to receive the port and receive the port as the intermediate frequency, avoid additionally setting up double-port radio frequency switch, reduce the radio frequency and walk the line degree of difficulty, promote the radio frequency performance, save the cost, solved the problem that the intermediate frequency port is not enough among the radio frequency power amplifier.
To achieve the above object, in a first aspect, the embodiments of the present invention provide a radio frequency power amplifier, which includes: the device comprises an intermediate frequency input port, an intermediate frequency amplifier, a first intermediate frequency selection switch, at least one first intermediate frequency transmission port, a second intermediate frequency switch, a second intermediate frequency transmission port and a second intermediate frequency receiving port;
the intermediate frequency input port is electrically connected with the input end of the intermediate frequency amplifier; the output end of the intermediate frequency amplifier is electrically connected with the input end of the first intermediate frequency selection switch; the first intermediate frequency selection switch comprises at least two output ends, one of the at least two output ends of the first intermediate frequency selection switch is electrically connected with the second intermediate frequency transmission port, and the other output ends are electrically connected with the first intermediate frequency transmission ports in a one-to-one correspondence manner;
the intermediate frequency amplifier is used for amplifying a first intermediate frequency signal input by the intermediate frequency input port; the first intermediate frequency selection switch is used for selectively communicating the intermediate frequency amplifier with one of the first intermediate frequency transmission ports or the second intermediate frequency transmission port according to a preset control signal; the at least one first intermediate frequency transmission port and the second intermediate frequency transmission port are respectively used for transmitting the first intermediate frequency signals of different frequency bands;
the input end of the second intermediate frequency switch is electrically connected with the second intermediate frequency receiving port, and the output end of the second intermediate frequency switch is electrically connected with the second intermediate frequency transmission port;
the second intermediate frequency switch is used for selectively communicating the second intermediate frequency receiving port with the second intermediate frequency transmission port according to a preset control signal; the second intermediate frequency transmission port is further configured to transmit a second intermediate frequency signal provided by the second intermediate frequency reception port.
Optionally, the first intermediate frequency selection switch includes a first intermediate frequency sub-selection switch and a second intermediate frequency sub-selection switch, and the second intermediate frequency switch includes a second intermediate frequency selection switch;
the first intermediate frequency sub-selection switch comprises two output ends, the second intermediate frequency sub-selection switch comprises at least one output end, and the second intermediate frequency sub-selection switch comprises two input ends;
the output end of the intermediate frequency amplifier is electrically connected with the input end of the first intermediate frequency sub-selection switch;
the two output ends of the first intermediate frequency sub-selection switch are respectively connected with the input end of the second intermediate frequency sub-selection switch and one input end of the second intermediate frequency selection switch; the output ends of the second intermediate frequency sub-selection switches are respectively electrically connected with the first intermediate frequency transmission ports in a one-to-one correspondence manner;
the first intermediate frequency sub-selection switch and the second intermediate frequency sub-selection switch are used for selectively communicating the intermediate frequency amplifier with one first intermediate frequency transmission port according to preset control signals;
the other input end of the second intermediate frequency selection switch is electrically connected with the intermediate frequency receiving port, and the output end of the second intermediate frequency selection switch is electrically connected with the second intermediate frequency transmission port;
the first intermediate frequency sub-selection switch and the second intermediate frequency selection switch are used for respectively communicating the intermediate frequency amplifier with the second intermediate frequency transmission port or communicating the second intermediate frequency receiving port with the second intermediate frequency transmission port according to a preset control signal.
Optionally, the radio frequency power amplifier further comprises: the high-frequency amplifier comprises a high-frequency input port, a high-frequency amplifier, a high-frequency receiving port, at least one high-frequency transmission port and at least one high-frequency selection switch, wherein the number of the high-frequency transmission ports corresponds to the number of the high-frequency selection switches one to one;
the high-frequency input port is electrically connected with the input end of the high-frequency amplifier and is used for inputting a first high-frequency signal;
each high-frequency selection switch comprises two input ends and an output end, the second input end of each high-frequency selection switch is electrically connected with the output end of the high-frequency amplifier, and the high-frequency amplifier is used for amplifying the first high-frequency signal;
the output ends of the high-frequency selection switches are electrically connected with high-frequency transmission ports in a one-to-one correspondence manner, the first input end of each high-frequency selection switch is electrically connected with the high-frequency receiving port, the high-frequency selection switches are used for selectively communicating the high-frequency amplifiers with the high-frequency transmission ports according to a preset control signal, and at least one high-frequency transmission port is used for respectively transmitting the first high-frequency signals of different frequency bands;
the high-frequency receiving ports are electrically connected with at least one high-frequency transmission port and are used for receiving second high-frequency signals in different frequency bands;
the at least one high-frequency selection switch is further used for selectively communicating the high-frequency receiving port with the at least one high-frequency transmission port according to a preset control signal; at least one high-frequency transmission port is further used for respectively transmitting second high-frequency signals of different frequency bands provided by the high-frequency receiving port.
Optionally, the radio frequency power amplifier further comprises: the low-frequency amplifier comprises a low-frequency input port, a low-frequency amplifier, a low-frequency selection switch and at least one low-frequency transmission port;
the low-frequency input port is electrically connected with the input end of the low-frequency amplifier and is used for inputting low-frequency signals;
the output end of the low-frequency amplifier is electrically connected with the input end of the low-frequency selection switch, and the low-frequency amplifier is used for amplifying the low-frequency signal;
the output end of the low-frequency selection switch is electrically connected with at least one low-frequency transmission port respectively, the low-frequency selection switch is used for selectively communicating the low-frequency amplifier with the at least one low-frequency transmission port according to a preset control signal, and the at least one low-frequency transmission port is used for transmitting low-frequency signals of different frequency bands respectively.
Optionally, the high frequency amplifier includes a first high frequency amplifier and a second high frequency amplifier, an input terminal of the first high frequency amplifier is electrically connected to the high frequency input port, an output terminal of the first high frequency amplifier is electrically connected to an input terminal of the second high frequency amplifier, and an output terminal of the second high frequency amplifier is electrically connected to a second input terminal of each of the high frequency selection switches;
the intermediate frequency amplifier comprises a first intermediate frequency amplifier and a second intermediate frequency amplifier, wherein the input end of the first intermediate frequency amplifier is electrically connected with the intermediate frequency input port, the output end of the first intermediate frequency amplifier is electrically connected with the input end of the second intermediate frequency amplifier, and the output end of the second intermediate frequency amplifier is electrically connected with the input end of the first intermediate frequency selection switch;
the low frequency amplifier comprises a first low frequency amplifier and a second low frequency amplifier, the input end of the first low frequency amplifier is electrically connected with the low frequency input port, the output end of the first low frequency amplifier is electrically connected with the input end of the second low frequency amplifier, and the output end of the second low frequency amplifier is electrically connected with the input end of the low frequency selective switch.
Optionally, the radio frequency power amplifier further includes a first power port, a second power port, and a third power port;
the first power supply port is electrically connected with the power supply input ends of the first high-frequency amplifier, the first intermediate-frequency amplifier and the first low-frequency amplifier; the first power port is used for supplying power to the first high-frequency amplifier, the first intermediate-frequency amplifier and the first low-frequency amplifier;
the second power supply port is electrically connected with the power supply input end of the second high-frequency amplifier; the second power supply port is used for supplying power to the second high-frequency amplifier;
the third power supply port is electrically connected with the power supply input ends of the second intermediate frequency amplifier and the second low frequency amplifier; the third power port is used for supplying power to the second intermediate frequency amplifier and the second low frequency amplifier.
Optionally, the radio frequency power amplifier further comprises a microprocessor; the microprocessor is electrically connected with the at least one high-frequency selection switch, the first intermediate-frequency selection switch, the second intermediate-frequency selection switch and the low-frequency selection switch; the microprocessor is configured to provide predetermined control signals to the at least one high frequency select switch, the first intermediate frequency select switch, the second intermediate frequency switch, and the low frequency select switch.
Optionally, the radio frequency power amplifier includes 4 high frequency transmission ports, 1 high frequency reception port, 4 first intermediate frequency transmission ports, 1 second intermediate frequency transmission port, 1 second intermediate frequency reception port, and 5 low frequency transmission ports.
In a second aspect, an embodiment of the present invention further provides a radio frequency transceiver device, which includes the radio frequency power amplifier as described in any one of the first aspects above, and further includes a radio frequency transceiver, a radio frequency front end module, and a radio frequency antenna;
the radio frequency transceiver is electrically connected with the radio frequency power amplifier and is used for modulating and regulating a first radio frequency signal generated by the terminal equipment;
the radio frequency power amplifier is also electrically connected with the radio frequency front end module and is used for amplifying the first radio frequency signal;
the radio frequency front end module is electrically connected with the radio frequency antenna and is used for transmitting the first radio frequency signal; the radio frequency antenna is used for transmitting the first radio frequency signal to an external base station;
the radio frequency antenna is also used for receiving a second external radio frequency signal;
the radio frequency front end module is also used for transmitting the second radio frequency signal;
the radio frequency power amplifier is also used for amplifying the second radio frequency signal;
the radio frequency transceiver is also used for modulating and adjusting the second radio frequency signal.
In a third aspect, an embodiment of the present invention further provides a terminal, where the terminal includes the radio frequency transceiver device as described in the second aspect
The embodiment of the utility model provides a pair of radio frequency power amplifier receives the first intermediate frequency signal of different frequency channels through intermediate frequency input port, and the intermediate frequency signal of each frequency channel is enlargied through intermediate frequency amplifier, utilizes first intermediate frequency selector switch to transmit the intermediate frequency signal of different frequency channels to each first intermediate frequency output port and second intermediate frequency transmission port respectively. The first intermediate frequency selection switch comprises at least two output ends, at least one output end of the first intermediate frequency selection switch is connected with each first intermediate frequency transmission port and each second intermediate frequency transmission port in a one-to-one correspondence mode, and the intermediate frequency amplifier can be selectively communicated with any one of the first intermediate frequency transmission ports or the second intermediate frequency transmission ports under the action of a preset control signal, so that first intermediate frequency signals of different frequency bands are output respectively, and the transmission efficiency of intermediate frequency radio frequency signals of different frequency bands is improved. In addition, the redundant high-frequency receiving ports are transformed into the second intermediate-frequency receiving port, so that the intermediate-frequency band with a Time Division Duplex (TDD) system can be received through the second intermediate-frequency receiving port, a dual-port radio-frequency switch is not required to be additionally arranged to receive the intermediate-frequency band with the TDD system, external radio-frequency devices are reduced, radio-frequency routing is optimized, radio-frequency line loss is reduced, radio-frequency performance is improved, design freedom is improved, and cost is reduced; meanwhile, the input end and the output end of the second intermediate frequency switch are respectively electrically connected with the second intermediate frequency receiving port and the second intermediate frequency transmission port, so that the connection state of the second intermediate frequency receiving port and the second intermediate frequency transmission port can be conveniently switched at any time, the transmission of a second intermediate frequency signal provided by the second intermediate frequency receiving port can be realized, and the controllability is improved.
Drawings
Fig. 1 shows a 4G mobile phone rf circuit of the conventional phase2 scheme.
Fig. 2 is a schematic diagram of a conventional multi-mode multi-power amplifier port.
Fig. 3 is a schematic diagram of a conventional rf front end module port.
Fig. 4 is a schematic diagram of a port of a radio frequency power amplifier according to an embodiment of the present invention.
Fig. 5 is a circuit diagram illustrating a principle of rf signal transmission of an rf power amplifier according to an embodiment of the present invention.
Fig. 6 is a circuit diagram illustrating a principle of rf signal transmission of an rf power amplifier according to an embodiment of the present invention.
Fig. 7 is a circuit diagram illustrating another rf signal transmission principle of an rf power amplifier according to an embodiment of the present invention.
Fig. 8 is a circuit diagram illustrating a principle of rf signal transmission of an rf power amplifier according to an embodiment of the present invention.
Fig. 9 is a schematic diagram of signal transmission of a radio frequency transceiver according to an embodiment of the present invention.
Fig. 10 is a schematic diagram of a terminal according to an embodiment of the present invention.
Detailed Description
In order to make the technical problem solved, the technical solution adopted and the technical effect achieved by the embodiments of the present invention clearer, the technical solution of the present invention is further described below by referring to the accompanying drawings and by means of specific embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the relevant portions of the present invention are shown in the drawings.
The embodiment of the utility model provides a pair of radio frequency power amplifier is applicable to the 4G cell-phone radio frequency circuit of phase2 scheme, through receiving the port and reforms transform into the intermediate frequency through an unnecessary high frequency among the radio frequency power amplifier, when having the intermediate frequency channel signal transmission of TDD standard, utilizes the intermediate frequency receiving port of reforming transform to carry out signal reception, has avoided additionally setting up the condition of dual-ported radio frequency switch. The radio frequency power amplifier can be applied to electronic equipment with radio frequency signal transmission, such as mobile phones, tablets, computers and the like.
First, briefly describing the phase2 scheme, fig. 1 shows a 4G mobile phone RF circuit of the conventional phase2 scheme, and as shown in fig. 1, a radio frequency Transceiver (RF Transceiver) is mainly used for modulation and conditioning of RF signals, and illustratively, has 5 RF TX ports and 14 RF RX ports. The 5 RF TX ports can be divided into 2 low frequencies (LB), 2 intermediate frequencies (MB) and 1 high frequency (HB) according to different frequency bands, wherein one port of each of the two low frequencies and the two intermediate frequencies is allocated to GSM 2G system, the remaining three ports of low, medium and high frequencies are allocated to CDMA2000/TDSCDMA/TDD-LTE/FDD-LTE 3G/4G system, and the 14 RF RX ports are respectively used for receiving signals transmitted from the antenna end according to different frequencies of the low, medium and high frequency bands of the mobile phone.
The multi-mode multi-power amplifier (3G/4G MMMB PA) is mainly used for amplifying 3G/4G rf signals, and fig. 2 is a port schematic diagram of a conventional multi-mode multi-power amplifier, as shown in fig. 2, and includes 5 TX low frequency (LB) ports, 5 TX intermediate frequency (MB) ports, 4 TX high frequency (HB) ports, and two high frequency RX ports.
With continued reference to fig. 1, the radio frequency front end module (TRX-FEM) is mainly used for amplifying 2G GSM signals and port transmission and switching of 3G and 4G radio frequency bands. For example, fig. 3 is a schematic diagram of a conventional rf front-end module port, as shown in fig. 3, there are 14 TRX ports for 3G/4G multiband TRX signal transmission; and 2 GSM TX ports for GSM high-low frequency band transmission.
Based on the above phase2 scheme, fig. 4 is a schematic circuit diagram of radio frequency signal transmission of a conventional multimode multi-power amplifier, as shown in fig. 4, since there are 5 intermediate frequency bands commonly used by an operator, which are respectively B1, B2, B3, B4, and B34(B39), and the intermediate frequency bands are transmitted through the intermediate frequency transmission ports MB1, MB2, MB3, MB4, and MB5 of the multimode multi-power amplifier, respectively, and the number of the intermediate frequency ports TX in the above phase2 scheme is exactly corresponding, but the B34(B39) band is TDD, TX and RX need to go in two ways, and therefore a dual-port radio frequency switch needs to be additionally added to solve the problem. Meanwhile, the multimode multi-power amplifier is provided with two high-frequency receiving ports HBRX1 and HBRX2, the original design is respectively used for receiving channels of TDD LTE high-frequency partial frequency bands B40 and B41(B38), and because B40 and B41(B38) are in a TDD mode, radio frequency can only be used in one frequency band in work, RX loops can share one path, so that only the HBRX1 port is needed, and the other HBRX2 port can be transformed into an intermediate-frequency receiving port for RX transmission of TDD LTE or TDSCDMA B34(B39) frequency band. Fig. 5 is a schematic diagram of a port of a radio frequency power amplifier according to an embodiment of the present invention, and as shown in fig. 5, it is the main inventive idea of the present disclosure to transform one of the high frequency receiving ports HBRX into an intermediate frequency receiving port MBRX.
Fig. 6 is a circuit diagram of a principle of radio frequency signal transmission of a radio frequency power amplifier according to an embodiment of the present invention, as shown in fig. 6, a radio frequency power amplifier includes: an intermediate frequency input port RFIN _ MB, an intermediate frequency amplifier 10, a first intermediate frequency selection switch 2, at least one first intermediate frequency transmission port MB, a second intermediate frequency switch 3, a second intermediate frequency transmission port MB5, and a second intermediate frequency reception port MB _ RX 1; in the present embodiment, the first if transmission ports MB include 4 first if transmission ports MB1 to MB 4.
The intermediate frequency input port RFIN _ MB is electrically connected to an input terminal of the intermediate frequency amplifier 10; the output end of the intermediate frequency amplifier 10 is electrically connected with the input end of the first intermediate frequency selection switch 2; the first intermediate frequency selection switch 2 includes at least two output terminals, one of the at least two output terminals of the first intermediate frequency selection switch 2 is electrically connected to the second intermediate frequency transmission port MB5, and the other output terminals are electrically connected to the 4 first intermediate frequency transmission ports MB1 to MB4 in a one-to-one correspondence.
The intermediate frequency amplifier 10 is configured to amplify a first intermediate frequency signal input by the intermediate frequency input port RFIN _ MB; the first intermediate frequency selection switch 2 is configured to selectively connect the intermediate frequency amplifier 10 to one of the first intermediate frequency transmission port MB and the second intermediate frequency transmission port MB5 according to a predetermined control signal; the 4 first intermediate frequency transmission ports MB 1-MB 4 and the second intermediate frequency transmission port MB5 are respectively used for transmitting first intermediate frequency signals of different frequency bands.
An input terminal of the second if switch 3 is electrically connected to the second if receiving port MB _ RX1, and an output terminal of the second if switch 3 is electrically connected to the second if transmitting port MB 5.
The second intermediate frequency switch 3 is configured to selectively connect the second intermediate frequency receiving port MB _ RX1 to the second intermediate frequency transmitting port MB5 according to a predetermined control signal; the second if transmitting port MB5 is also used for transmitting the second if signal provided by the second if receiving port MB _ RX 1.
The embodiment of the utility model provides a radio frequency power amplifier is applied to radio frequency signal's receipt and transmission, including transmitting circuit and receiving circuit. Illustratively, the radio frequency power amplifier refers to a power amplifier in a mobile phone, when a radio frequency intermediate frequency signal is sent to the outside, a first intermediate frequency signal to be sent is input through an intermediate frequency input port RFIN _ MB, the first intermediate frequency signal enters the intermediate frequency amplifier 10 through the intermediate frequency input port RFIN _ MB, is amplified by the intermediate frequency amplifier 10 and is output to a first intermediate frequency selector switch 2, according to a frequency band of the first intermediate frequency signal, the first intermediate frequency selector switch 10 can select different first intermediate frequency transmission ports MB or second intermediate frequency transmission ports MB5 for transmission, and the first intermediate frequency signal is output through the first intermediate frequency transmission ports MB or second intermediate frequency transmission ports MB5, so that transmission of the first intermediate frequency signal in different frequency bands is conveniently controlled, controllability is improved, and transmission efficiency of the signal is enhanced.
For the receiving loop, as described above, in the intermediate frequency band commonly used by operators, the B34(B39) frequency band is in TDD mode, and transmission and reception need to be divided into two paths, so that the redundant high-frequency receiving port is modified into the second intermediate frequency receiving port MB _ RX1, so that the radio-frequency signal with the TDD mode frequency band can be received without using an additional dual-port radio-frequency switch, on one hand, external radio-frequency devices are reduced, radio-frequency routing is optimized, cost is reduced, radio-frequency line loss is reduced, and radio-frequency performance is improved; on the other hand, an improved thought is provided, which can enable the design to be more free; meanwhile, when a second intermediate frequency signal having a TDD scheme is transmitted via an antenna, the second intermediate frequency receiving port MB _ RX1 and the second intermediate frequency transmitting port MB5 are turned on according to a predetermined control signal, so that the second intermediate frequency receiving port MB _ RX1 can receive the second intermediate frequency signal, and by setting the second intermediate frequency switch 3, the second intermediate frequency switch 3 can effectively control and switch the connection state of the second intermediate frequency receiving port MB _ RX1 and the second intermediate frequency transmitting port MB5, and the control is simple, convenient and effective. It will be understood that the predetermined control signal is generated by a microprocessor mentioned below, and for example, when the signal of 600-700 band needs to be transmitted, the signal is determined by the processor to be a low band signal, and the low band signal is suitable for being transmitted through the low band transmission port LB1, a first low band transmission control signal is generated, and the low band selection switch is controlled to connect the low band amplifier with the low band transmission port LB1 for signal transmission. Further, the predetermined control signal refers to a signal for controlling different frequency bands according to different frequency bands, and is not described in detail herein.
Fig. 7 is a schematic circuit diagram of a radio frequency signal transmission principle of another radio frequency power amplifier according to an embodiment of the present invention, as shown in fig. 7, optionally, the first intermediate frequency selection switch includes a first intermediate frequency sub-selection switch 21 and a second intermediate frequency sub-selection switch 22, and the second intermediate frequency switch includes a second intermediate frequency selection switch 31.
The first intermediate frequency sub-selection switch 21 includes two output terminals, the second intermediate frequency sub-selection switch 22 includes at least one output terminal, and the second intermediate frequency selection switch 31 includes two input terminals; in this embodiment, the second intermediate frequency sub-selection switch 22 includes 4 output terminals.
The output terminal of the intermediate frequency amplifier 10 is electrically connected to the input terminal of the first intermediate frequency sub-selection switch 21.
Two output ends of the first intermediate frequency sub-selection switch 21 are respectively connected with an input end of the second intermediate frequency sub-selection switch 22 and an input end of the second intermediate frequency selection switch 31; the output ends of the second intermediate frequency sub-selection switches 22 are electrically connected to the first intermediate frequency transmission ports MB in a one-to-one correspondence.
The first intermediate frequency sub-selection switch 21 and the second intermediate frequency sub-selection switch 22 are used to selectively connect the intermediate frequency amplifier 10 to one of the first intermediate frequency transmission ports MB, respectively, according to predetermined control signals.
The other input terminal of the second if selector switch 31 is electrically connected to the if receiving port MB _ RX1, and the output terminal of the second if selector switch 31 is electrically connected to the second if transmitting port MB 5.
The first intermediate frequency sub-selection switch 21 and the second intermediate frequency selection switch 31 are used to communicate the intermediate frequency amplifier 10 with the second intermediate frequency transmission port MB5 or communicate the second intermediate frequency reception port MB _ RX1 with the second intermediate frequency transmission port MB5, respectively, according to predetermined control signals.
Further, the first intermediate frequency selector switch includes a first intermediate frequency sub-selector switch 21 and a second intermediate frequency sub-selector switch 22, for example, when the first intermediate frequency signal amplified by the intermediate frequency amplifier 10 is transmitted to the input terminal of the first intermediate frequency sub-selector switch 21, and when the first intermediate frequency signal is not in the TDD format, the first intermediate frequency sub-selector switch 21 connects the intermediate frequency amplifier 10 with the second intermediate frequency sub-selector switch 22, and meanwhile, according to the frequency of the first intermediate frequency signal, the intermediate frequency signal can be divided into 4 frequency bands, and according to the difference of the frequency bands, the second intermediate frequency sub-selector switch 22 selects to conduct the corresponding first intermediate frequency transmission port MB, so that the first intermediate frequency signals with different frequencies can be output through the corresponding first intermediate frequency transmission port MB. When the first intermediate frequency signal is in the TDD mode, the first intermediate frequency sub-selection switch 21 connects the intermediate frequency amplifier 10 and the second intermediate frequency selection switch 22, and the second intermediate frequency selection switch 22 connects the second intermediate frequency transmission port MB5, so as to transmit the TDD mode intermediate frequency signal. In addition, when receiving the intermediate frequency signal of the TDD scheme, the second intermediate frequency selection switch 22 connects the second intermediate frequency transmission port MB5 with the second intermediate frequency reception port MB _ RX1, so that the second intermediate frequency reception port MB _ RX1 can receive the second intermediate frequency signal of the TDD scheme, and thus, an additional dual-port rf switch is not required to be provided for reception, external rf devices are reduced, cost is reduced, and rf performance is improved.
Optionally, the radio frequency power amplifier further comprises: the high-frequency input port RFIN _ HB, the high-frequency amplifier 11, the high-frequency receiving port HB _ RX1, at least one high-frequency transmission port HB, and at least one high-frequency selection switch 20, where the number of the high-frequency transmission ports HB and the number of the high-frequency selection switches 20 are in one-to-one correspondence. In the present embodiment, 4 high-frequency transmission ports HB1 to HB4 are taken as an example.
The high frequency input port RFIN _ HB is electrically connected to an input terminal of the high frequency amplifier 11, and the high frequency input port RFIN _ HB is used to input a first high frequency signal.
Each of the high-frequency selection switches 20 includes two input terminals and one output terminal, and a second input terminal of each of the high-frequency selection switches 20 is electrically connected to an output terminal of the high-frequency amplifier 11, and the high-frequency amplifier 11 is configured to amplify a first high-frequency signal.
The output ends of the high-frequency selection switches 20 are electrically connected with the high-frequency transmission ports HB 1-HB 4 in a one-to-one correspondence manner, the first input end of each high-frequency selection switch 20 is electrically connected with the high-frequency receiving port HB _ RX1, the high-frequency selection switches 20 are used for selectively communicating the high-frequency amplifier 11 with the high-frequency transmission ports HB 1-HB 4 according to a preset control signal, and the high-frequency transmission ports HB are used for respectively transmitting first high-frequency signals of different frequency bands.
The high-frequency receiving ports HB _ RX1 are electrically connected with the high-frequency transmission ports HB 1-HB 4, and the high-frequency receiving ports HB _ RX1 are used for receiving second high-frequency signals of different frequency bands.
The high-frequency selection switch 20 is further configured to selectively connect the high-frequency receiving port HB _ RX1 with the high-frequency transmission ports HB1 to HB4 according to predetermined control signals, respectively; the high-frequency transmission ports HB 1-HB 4 are also used for respectively transmitting second high-frequency signals of different frequency bands provided by the high-frequency receiving port HB _ RX 1.
It will be appreciated that the radio frequency power amplifier may also transmit high frequency radio frequency signals. Illustratively, a first high-frequency signal is input through the high-frequency input port RFIN _ HB, after the first high-frequency signal is amplified by the high-frequency amplifier 11, the first high-frequency signal can be divided into 4 frequency bands according to the frequency of the first high-frequency signal, the high-frequency selection switch 20 selectively connects the high-frequency transmission ports HB corresponding to the different frequency bands with the high-frequency amplifier 11 through the different frequency bands of the first high-frequency signal, so as to simply, conveniently and effectively transmit the first high-frequency signal of the different frequency bands, and improve the transmission efficiency of the radio-frequency signal. Meanwhile, for the high-frequency receiving circuit, when the second high-frequency signal transmitted from the outside needs to be received, the high-frequency selection switch 20 is used to selectively conduct each high-frequency transmission port HB and the high-frequency receiving port HB _ RX1, so that the second high-frequency signal can be received simply, conveniently and effectively. It can be understood that, for the high frequency part, it is generally used for receiving B40 and B41(B38) frequency bands, which are TDD systems, and only one frequency band is used by radio frequency in operation, so that the receiving loops of the B40 and B41(B38) frequency bands can be shared, and the reception of the second high frequency signal by the radio frequency power amplifier can be fully satisfied by only one high frequency receiving port HB _ RX 1.
Optionally, the radio frequency power amplifier further comprises: a low frequency input port RFIN _ LB, a low frequency amplifier 12, a low frequency selection switch 30 and at least one low frequency transmission port LB.
The low frequency input port RFIN _ LB is electrically connected to an input terminal of the low frequency amplifier 12, and the low frequency input port RFIN _ LB is used for inputting a low frequency signal.
The output terminal of the low frequency amplifier 12 is electrically connected to the input terminal of the low frequency selection switch 30, and the low frequency amplifier 12 is used for amplifying the low frequency signal.
The output end of the low frequency selection switch 30 is electrically connected to at least one low frequency transmission port LB, respectively, the low frequency selection switch 30 is configured to selectively connect the low frequency amplifier 12 and the at least one low frequency transmission port LB according to a predetermined control signal, and the at least one low frequency transmission port LB is configured to transmit low frequency signals of different frequency bands, respectively.
Based on the same principle, the radio frequency power amplifier can also output low frequency signals. Illustratively, the low frequency input port RFIN _ LB is arranged to transmit the low frequency signal to the low frequency amplifier 12, the low frequency signal amplified by the low frequency amplifier 12 may be divided into 5 frequency bands according to different frequencies, and the low frequency selection switch 30 is adopted to selectively connect the 5 low frequency transmission ports LB with the low frequency amplifier 12 according to different frequency bands of different low frequency signals, so as to simply and conveniently implement transmission of the low frequency signal. Further, the low frequency input port RFIN _ LB includes an ultra low frequency input port, for example, the ultra low frequency input port can transmit a frequency band of 600 + 700, and the ordinary low frequency input port can transmit a frequency band of 700 + 900, so the embodiment of the present invention provides a low frequency input port RFIN _ LB of a radio frequency power amplifier that can transmit a low frequency signal of 600 + 900. By arranging the low-frequency input port RFIN _ LB, the transmission range of low-frequency signals is expanded, and the applicability is improved.
Alternatively, the high frequency amplifier 11 includes a first high frequency amplifier 111 and a second high frequency amplifier 112, an input terminal of the first high frequency amplifier 111 is electrically connected to the high frequency input port RFIN _ HB, an output terminal of the first high frequency amplifier 111 is electrically connected to an input terminal of the second high frequency amplifier 112, and an output terminal of the second high frequency amplifier 112 is electrically connected to a second input terminal of each of the high frequency selecting switches 20.
The intermediate frequency amplifier 10 includes a first intermediate frequency amplifier 101 and a second intermediate frequency amplifier 102, an input terminal of the first intermediate frequency amplifier 101 is electrically connected to the intermediate frequency input port RFIN _ MB, an output terminal of the first intermediate frequency amplifier 101 is electrically connected to an input terminal of the second intermediate frequency amplifier 102, and an output terminal of the second intermediate frequency amplifier 102 is electrically connected to an input terminal of the first intermediate frequency selector switch 21.
The low frequency amplifier 12 includes a first low frequency amplifier 121 and a second low frequency amplifier 122, an input terminal of the first low frequency amplifier 121 is electrically connected to the low frequency input port RFIN _ LB, an output terminal of the first low frequency amplifier 121 is electrically connected to an input terminal of the second low frequency amplifier 122, and an output terminal of the second low frequency amplifier 122 is electrically connected to an input terminal of the low frequency selection switch 30.
By arranging the high-frequency amplifier 11 comprising the first high-frequency amplifier 111 and the second high-frequency amplifier 112 to further amplify the high-frequency signal, a more real and effective high-frequency signal is obtained, and the accuracy of radio-frequency signal transmission is improved. Meanwhile, the intermediate frequency amplifier 10 is arranged to include a first intermediate frequency amplifier 101 and a second intermediate frequency amplifier 102, and the low frequency amplifier 12 includes a first low frequency amplifier 121 and a second low frequency amplifier 122, so that the accuracy of intermediate frequency and low frequency signal transmission is improved, and the performance of the radio frequency power amplifier is improved.
Optionally, the radio frequency power amplifier further comprises a first power port Vcc1, a second power port Vcc2, and a third power port Vcc2_ 2.
The first power supply port Vcc1 is electrically connected to the power supply input terminals of the first high frequency amplifier 111, the first intermediate frequency amplifier 101, and the first low frequency amplifier 121; the first power supply port Vcc1 is used to supply the first high frequency amplifier 111, the first intermediate frequency amplifier 101, and the first low frequency amplifier 121.
The second power supply port Vcc2 is electrically connected to the power supply input terminal of the second high-frequency amplifier 112; the second power supply port Vcc2 is used to power the second high frequency amplifier 112.
The third power port Vcc2_2 is electrically connected to the power input terminals of the second intermediate frequency amplifier 102 and the second low frequency amplifier 122; the third power supply port Vcc2_2 is used to power the second intermediate frequency amplifier 102 and the second low frequency amplifier 122.
By arranging the first power supply port Vcc1, the first power supply port Vcc1 supplies power to the first high-frequency amplifier 111, the first intermediate-frequency amplifier 101 and the first low-frequency amplifier 121 at the same time, so that the power supply quality is ensured, connecting wires and electronic devices are reduced, and the cost is reduced; since the high-frequency signal transmission is easily interfered by the external environment, the second power port Vcc2 is arranged to supply power to the second high-frequency amplifier 112, so that the second high-frequency amplifier 112 has a separate power supply device, the second high-frequency amplifier 112 is prevented from receiving interference of other amplifiers during operation, and the stability and accuracy of the high-frequency signal transmission are improved; by setting the third power port Vcc2_2 to supply power to the second intermediate frequency amplifier 102 and the second low frequency amplifier 122, the power supply requirements of the intermediate frequency amplifier 102 and the low frequency amplifier 122 are met, and meanwhile, the power supply device can be saved, and the cost can be reduced.
Fig. 8 is a schematic circuit diagram of rf signal transmission of another rf power amplifier according to an embodiment of the present invention, as shown in fig. 8, optionally, the rf power amplifier further includes a microprocessor 40; the microprocessor 40 is electrically connected with at least one high frequency selection switch 20, a first intermediate frequency selection switch 2, a second intermediate frequency switch 3 and a low frequency selection switch 30; as described above, the microprocessor 40 is configured to determine the frequency bands of different transmission signals, and provide different predetermined control signals to the high frequency selection switch 20, the first intermediate frequency selection switch 2, the second intermediate frequency selection switch 3, and the low frequency selection switch 40 according to the frequency bands of the different transmission signals, which is not described herein again.
The microprocessor 40 is set to send different control instructions to control the high frequency selection switch 20, the first intermediate frequency selection switch 2, the second intermediate frequency selection switch 3 and the low frequency selection switch 30 to switch the circuit. The control is simple, the operation is convenient, and the circuit switching efficiency is improved. Illustratively, the radio frequency power amplifier includes 4 high frequency transmission ports HB, 1 high frequency reception port HB _ RX1, 4 first intermediate frequency transmission ports MB, 1 second intermediate frequency transmission port MB5, 1 second intermediate frequency reception port MB _ RX1, and 5 low frequency transmission ports LB. After the first intermediate frequency signal is amplified by the intermediate frequency amplifier 1, the microprocessor 40 controls the first intermediate frequency selection switch 2 to connect the first intermediate frequency transmission port MB1 with the intermediate frequency amplifier 1, so that the first intermediate frequency signal is transmitted through the first intermediate frequency transmission port MB 1.
Fig. 9 is a schematic diagram of signal transmission of a radio frequency transceiver device according to an embodiment of the present invention, as shown in fig. 9, a radio frequency transceiver device, including the radio frequency power amplifier 50 according to any one of the embodiments of the present invention, further including a radio frequency transceiver 60, a radio frequency front end module 70, and a radio frequency antenna 80.
The radio frequency transceiver 60 is electrically connected with the radio frequency power amplifier 50, and the radio frequency transceiver 60 is used for modulating and regulating a first radio frequency signal generated by the terminal equipment; the radio frequency power amplifier 50 is further electrically connected to the radio frequency front end module 70, and the radio frequency power amplifier 50 is configured to amplify a first radio frequency signal; the rf front-end module 70 is electrically connected to the rf antenna 80, and the rf front-end module 70 is configured to transmit a first rf signal; the rf antenna 80 is used for transmitting a first rf signal to an external base station; the rf antenna 80 is also used for receiving an external second rf signal; the rf front-end module 70 is further configured to transmit a second rf signal; the radio frequency power amplifier 50 is also used for amplifying a second radio frequency signal; radio-frequency transceiver 60 is also used to modulation condition the second radio-frequency signal.
By modifying one high-frequency receiving port in the radio-frequency power amplifier 50 into a second intermediate-frequency receiving port, on one hand, under the condition that high-frequency receiving is not influenced, redundant high-frequency receiving ports are utilized, and interface waste is avoided; on the other hand, a radio frequency switch with two ports does not need to be additionally arranged independently, so that radio frequency devices are saved, material cost is reduced, radio frequency wiring is optimized, radio frequency line loss is reduced, and radio frequency performance is improved.
Fig. 10 is a schematic diagram of a terminal according to an embodiment of the present invention, as shown in fig. 10. A terminal 100 comprises a radio frequency transceiver as described above.
Through utilizing the embodiment of the utility model provides a radio frequency transceiver for need not to set up the radio frequency switch of dual-port alone in the terminal 100, only receive the port through unnecessary high frequency and both can avoid the not enough condition of intermediate frequency receiving port to take place, practice thrift the cost and improve the radio frequency performance. Illustratively, the terminal 100 may be a mobile phone, a tablet computer, a smart wearable device, or the like.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. A radio frequency power amplifier, comprising: the device comprises an intermediate frequency input port, an intermediate frequency amplifier, a first intermediate frequency selection switch, at least one first intermediate frequency transmission port, a second intermediate frequency switch, a second intermediate frequency transmission port and a second intermediate frequency receiving port;
the intermediate frequency input port is electrically connected with the input end of the intermediate frequency amplifier; the output end of the intermediate frequency amplifier is electrically connected with the input end of the first intermediate frequency selection switch; the first intermediate frequency selection switch comprises at least two output ends, one of the at least two output ends of the first intermediate frequency selection switch is electrically connected with the second intermediate frequency transmission port, and the other output ends are electrically connected with the first intermediate frequency transmission ports in a one-to-one correspondence manner;
the intermediate frequency amplifier is used for amplifying a first intermediate frequency signal input by the intermediate frequency input port; the first intermediate frequency selection switch is used for selectively communicating the intermediate frequency amplifier with one of the first intermediate frequency transmission ports or the second intermediate frequency transmission port according to a preset control signal; the at least one first intermediate frequency transmission port and the second intermediate frequency transmission port are respectively used for transmitting the first intermediate frequency signals of different frequency bands;
the input end of the second intermediate frequency switch is electrically connected with the second intermediate frequency receiving port, and the output end of the second intermediate frequency switch is electrically connected with the second intermediate frequency transmission port;
the second intermediate frequency switch is used for selectively communicating the second intermediate frequency receiving port with the second intermediate frequency transmission port according to a preset control signal; the second intermediate frequency transmission port is further configured to transmit a second intermediate frequency signal provided by the second intermediate frequency reception port.
2. The radio frequency power amplifier of claim 1, wherein the first if selector switch comprises a first if sub-selector switch and a second if sub-selector switch, the second if switch comprising a second if selector switch;
the first intermediate frequency sub-selection switch comprises two output ends, the second intermediate frequency sub-selection switch comprises at least one output end, and the second intermediate frequency sub-selection switch comprises two input ends;
the output end of the intermediate frequency amplifier is electrically connected with the input end of the first intermediate frequency sub-selection switch;
the two output ends of the first intermediate frequency sub-selection switch are respectively connected with the input end of the second intermediate frequency sub-selection switch and one input end of the second intermediate frequency selection switch; the output ends of the second intermediate frequency sub-selection switches are respectively electrically connected with the first intermediate frequency transmission ports in a one-to-one correspondence manner;
the first intermediate frequency sub-selection switch and the second intermediate frequency sub-selection switch are used for selectively communicating the intermediate frequency amplifier with one first intermediate frequency transmission port according to preset control signals;
the other input end of the second intermediate frequency selection switch is electrically connected with the intermediate frequency receiving port, and the output end of the second intermediate frequency selection switch is electrically connected with the second intermediate frequency transmission port;
the first intermediate frequency sub-selection switch and the second intermediate frequency selection switch are used for respectively communicating the intermediate frequency amplifier with the second intermediate frequency transmission port or communicating the second intermediate frequency receiving port with the second intermediate frequency transmission port according to a preset control signal.
3. The radio frequency power amplifier of claim 1, further comprising: the high-frequency amplifier comprises a high-frequency input port, a high-frequency amplifier, a high-frequency receiving port, at least one high-frequency transmission port and at least one high-frequency selection switch, wherein the number of the high-frequency transmission ports corresponds to the number of the high-frequency selection switches one to one;
the high-frequency input port is electrically connected with the input end of the high-frequency amplifier and is used for inputting a first high-frequency signal;
each high-frequency selection switch comprises two input ends and an output end, the second input end of each high-frequency selection switch is electrically connected with the output end of the high-frequency amplifier, and the high-frequency amplifier is used for amplifying the first high-frequency signal;
the output ends of the high-frequency selection switches are electrically connected with high-frequency transmission ports in a one-to-one correspondence manner, the first input end of each high-frequency selection switch is electrically connected with the high-frequency receiving port, the high-frequency selection switches are used for selectively communicating the high-frequency amplifiers with the high-frequency transmission ports according to a preset control signal, and at least one high-frequency transmission port is used for respectively transmitting the first high-frequency signals of different frequency bands;
the high-frequency receiving ports are electrically connected with at least one high-frequency transmission port and are used for receiving second high-frequency signals in different frequency bands;
the at least one high-frequency selection switch is further used for selectively communicating the high-frequency receiving port with the at least one high-frequency transmission port according to a preset control signal; at least one of the high-frequency transmission ports is further configured to transmit the second high-frequency signals of different frequency bands provided by the high-frequency receiving port, respectively.
4. The radio frequency power amplifier of claim 3, further comprising: the low-frequency amplifier comprises a low-frequency input port, a low-frequency amplifier, a low-frequency selection switch and at least one low-frequency transmission port;
the low-frequency input port is electrically connected with the input end of the low-frequency amplifier and is used for inputting low-frequency signals;
the output end of the low-frequency amplifier is electrically connected with the input end of the low-frequency selection switch, and the low-frequency amplifier is used for amplifying the low-frequency signal;
the output end of the low-frequency selection switch is electrically connected with at least one low-frequency transmission port respectively, the low-frequency selection switch is used for selectively communicating the low-frequency amplifier with the at least one low-frequency transmission port according to a preset control signal, and the at least one low-frequency transmission port is used for transmitting low-frequency signals of different frequency bands respectively.
5. The radio frequency power amplifier according to claim 4, wherein the high frequency amplifier includes a first high frequency amplifier and a second high frequency amplifier, an input terminal of the first high frequency amplifier is electrically connected to the high frequency input port, an output terminal of the first high frequency amplifier is electrically connected to an input terminal of the second high frequency amplifier, and an output terminal of the second high frequency amplifier is electrically connected to a second input terminal of each of the high frequency selection switches;
the intermediate frequency amplifier comprises a first intermediate frequency amplifier and a second intermediate frequency amplifier, wherein the input end of the first intermediate frequency amplifier is electrically connected with the intermediate frequency input port, the output end of the first intermediate frequency amplifier is electrically connected with the input end of the second intermediate frequency amplifier, and the output end of the second intermediate frequency amplifier is electrically connected with the input end of the first intermediate frequency selection switch;
the low frequency amplifier comprises a first low frequency amplifier and a second low frequency amplifier, the input end of the first low frequency amplifier is electrically connected with the low frequency input port, the output end of the first low frequency amplifier is electrically connected with the input end of the second low frequency amplifier, and the output end of the second low frequency amplifier is electrically connected with the input end of the low frequency selective switch.
6. The radio frequency power amplifier of claim 5, further comprising a first power port, a second power port, and a third power port;
the first power supply port is electrically connected with the power supply input ends of the first high-frequency amplifier, the first intermediate-frequency amplifier and the first low-frequency amplifier; the first power port is used for supplying power to the first high-frequency amplifier, the first intermediate-frequency amplifier and the first low-frequency amplifier;
the second power supply port is electrically connected with the power supply input end of the second high-frequency amplifier; the second power supply port is used for supplying power to the second high-frequency amplifier;
the third power supply port is electrically connected with the power supply input ends of the second intermediate frequency amplifier and the second low frequency amplifier; the third power port is used for supplying power to the second intermediate frequency amplifier and the second low frequency amplifier.
7. The radio frequency power amplifier of claim 6, wherein the radio frequency power amplifier further comprises a microprocessor; the microprocessor is electrically connected with the at least one high-frequency selection switch, the first intermediate-frequency selection switch, the second intermediate-frequency selection switch and the low-frequency selection switch; the microprocessor is configured to provide predetermined control signals to the at least one high frequency select switch, the first intermediate frequency select switch, the second intermediate frequency switch, and the low frequency select switch.
8. The RF power amplifier of claim 4, comprising 4 of the high frequency transmit ports, 1 of the high frequency receive ports, 4 of the first IF transmit ports, 1 of the second IF receive ports, and 5 of the low frequency transmit ports.
9. A radio frequency transceiver device, comprising the radio frequency power amplifier according to any one of claims 1-8, further comprising a radio frequency transceiver, a radio frequency front end module and a radio frequency antenna;
the radio frequency transceiver is electrically connected with the radio frequency power amplifier and is used for modulating and regulating a first radio frequency signal generated by the terminal equipment;
the radio frequency power amplifier is also electrically connected with the radio frequency front end module and is used for amplifying the first radio frequency signal;
the radio frequency front end module is electrically connected with the radio frequency antenna and is used for transmitting the first radio frequency signal; the radio frequency antenna is used for transmitting the first radio frequency signal to an external base station;
the radio frequency antenna is also used for receiving a second external radio frequency signal;
the radio frequency front end module is also used for transmitting the second radio frequency signal;
the radio frequency power amplifier is also used for amplifying the second radio frequency signal;
the radio frequency transceiver is also used for modulating and adjusting the second radio frequency signal.
10. A terminal, characterized in that it comprises a radio frequency transceiving apparatus according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202021280910.7U CN212572486U (en) | 2020-07-02 | 2020-07-02 | Radio frequency power amplifier, radio frequency transceiver and terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021280910.7U CN212572486U (en) | 2020-07-02 | 2020-07-02 | Radio frequency power amplifier, radio frequency transceiver and terminal |
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| CN212572486U true CN212572486U (en) | 2021-02-19 |
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| CN202021280910.7U Active CN212572486U (en) | 2020-07-02 | 2020-07-02 | Radio frequency power amplifier, radio frequency transceiver and terminal |
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