CN115133951A - Radio frequency system and electronic equipment - Google Patents
Radio frequency system and electronic equipment Download PDFInfo
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- CN115133951A CN115133951A CN202210902486.2A CN202210902486A CN115133951A CN 115133951 A CN115133951 A CN 115133951A CN 202210902486 A CN202210902486 A CN 202210902486A CN 115133951 A CN115133951 A CN 115133951A
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- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
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Abstract
The embodiment of the application discloses a radio frequency system and electronic equipment. The radio frequency system includes: a radio frequency transceiver; the first transmitting branch is switchably connected with the first antenna or the second antenna and used for processing a first transmitting signal output by the radio frequency transceiver; a first coupling device having a first input terminal, a first output terminal, a first forward coupling terminal and a first backward coupling terminal; a second coupling device having a second input terminal, a second output terminal, a second forward coupling terminal and a second backward coupling terminal; a first switch device, a first end of which is switchably connected to the first forward coupling output end or the first backward coupling end, another first end of which is switchably connected to the second forward coupling output end or the second backward coupling end, and a second end of which is connected to the first feedback input port; the first switch device is used for controlling a first end and a second end of the first switch device to be in a conducting state.
Description
Technical Field
The present disclosure relates to the field of radio frequency communication, and more particularly, to a radio frequency system and an electronic device.
Background
With the development and progress of the technology, the 5G mobile communication technology is gradually beginning to be applied to electronic devices. The communication frequency of the 5G mobile communication technology is higher than that of the 4G mobile communication technology. Generally, a coupler can be arranged in a feedback detection channel in a radio frequency system to realize coupling processing of a transmission signal, and the coupler is high in cost and large in occupied area.
Disclosure of Invention
In order to solve any technical problem, embodiments of the present application provide a radio frequency system and an electronic device.
In one aspect, an embodiment of the present application provides a radio frequency system, including:
a radio frequency transceiver configured with a first transmit port and a first feedback input port;
the input end of the first transmitting branch is connected with the first transmitting port, and the output end of the first transmitting branch is switchably connected with a first antenna or a second antenna and is used for processing a first transmitting signal output by the radio frequency transceiver;
a first coupling device having a first input terminal, a first output terminal, a first forward coupling terminal and a first backward coupling terminal; wherein the first input is coupled with the first transmit branch and the first output is coupled with the first antenna; the first forward coupling end is used for outputting a first forward coupling signal of the first transmission signal; the first backward coupling end is used for outputting a first backward coupling signal of a reflection signal of the first transmission signal;
a second coupling device having a second input terminal, a second output terminal, a second forward coupling terminal and a second backward coupling terminal; wherein the second input is coupled to the second transmit branch and the second output is coupled to the second antenna; the second forward coupling end is used for outputting a first forward coupling signal of the first transmission signal; the second backward coupling end is used for outputting a first backward coupling signal of a reflection signal of the first transmission signal;
a first switch device having two first terminals and one first terminal, wherein one first terminal of the first switch device is switchably connected to the first forward coupling output terminal or the first backward coupling terminal, the other first terminal of the first switch device is switchably connected to the second forward coupling output terminal or the second backward coupling terminal, and a second terminal of the first switch device is connected to the first feedback input port; the first switch device is used for controlling a first end and a second end of the first switch device to be in a conducting state.
In another aspect, an embodiment of the present application provides an electronic device including the radio frequency system.
One of the above technical solutions has the following advantages or beneficial effects:
the first coupling device and the second coupling device can be used for realizing power control on different antennas used by the same transmitting branch, link loss is reduced, radio frequency performance is improved, switching of power control on different antennas is realized by the first switching device, a power detection circuit is simplified, the integration level of the circuit is high, and the occupied space is small.
Additional features and advantages of the embodiments of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the embodiments of the application. The objectives and other advantages of the embodiments of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the embodiments of the present application and are incorporated in and constitute a part of this specification, illustrate embodiments of the present application and together with the examples of the embodiments of the present application do not constitute a limitation of the embodiments of the present application.
FIG. 1 is a schematic diagram of a radio frequency system;
fig. 2 is a first schematic diagram of a radio frequency system according to an embodiment of the present application;
FIG. 3(a) is a second schematic diagram of a radio frequency system of an embodiment of the system of the present application;
FIG. 3(b) is a third schematic diagram of an RF system of an exemplary system of the present application;
FIG. 4(a) is a fourth schematic diagram of an RF system of an exemplary system of the present application;
FIG. 4(b) is a fourth schematic diagram of an RF system of an exemplary system of the present application;
FIG. 4(c) is a fifth schematic diagram of a radio frequency system of an embodiment of the system of the present application;
fig. 5(a) is a schematic diagram of a first application of a radio frequency system according to an embodiment of the present application;
fig. 5(b) is a schematic diagram of a second application of the radio frequency system according to the embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application more apparent, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that, in the embodiments of the present application, features in the embodiments and the examples may be arbitrarily combined with each other without conflict.
Fig. 1 is a schematic diagram of a radio frequency system. As shown in fig. 1, the radio frequency system includes a radio frequency transceiver 10, a first transmitting branch 21, a second transmitting branch 22, a first coupler CPL1 and a third coupler CPL 3; wherein:
the radio frequency transceiver 10 is provided with a first transmitting port TX1, a second transmitting port TX2, a first feedback input port FB1 and a second feedback input port;
the input end of the first transmitting branch 21 is connected to a first transmitting port TX1, and the output end of the first transmitting branch 21 is switchably connected to a first antenna ANT1 or a second antenna ANT2, so as to process a first transmitting signal output by the radio frequency transceiver;
a second transmitting branch 22, an input end of the second transmitting branch 22 is connected to a second transmitting port TX2, and an output end of the second transmitting branch 22 is connected to a third antenna ANT3, and is configured to process a second transmitting signal output by the radio frequency transceiver;
the input end of the first coupler CPL1 is coupled with the first transmitting branch 21, and the coupled output end of the first coupler is connected with the first feedback input port FB1, so as to acquire a first feedback signal corresponding to the first transmitting signal;
an input end of the third coupler CPL3 is coupled to the second transmitting branch 21, and an output end of the third coupler is connected to the second feedback input port FB2, so as to acquire a second feedback signal corresponding to the second transmitting signal.
In the radio frequency system shown in fig. 1, the first coupler CPL1 and the third coupler CPL3 implement a unidirectional coupling function, generate a feedback signal of a transmission signal, and cannot implement a function of automatically tuning a resonant frequency of an antenna.
To solve the above problem, embodiments of the present application provide the following solutions:
fig. 2 is a first schematic diagram of a radio frequency system according to an embodiment of the present application. As shown in fig. 2, the radio frequency transceiver 10, the first transmitting branch 21, the first coupling device 31, the second coupling device 32 and the first switching device 40; wherein:
the radio frequency transceiver 10 may have a plurality of transmission ports, each for outputting a radio frequency signal of a different frequency band. Specifically, the rf transceiver 10 has a first transmitting port TX1, and the first transmitting port TX1 is configured to output a first rf signal.
In addition, the radio frequency transceiver 10 further has a FeedBack input port FB for receiving a FeedBack receive (FeedBack) signal.
Specifically, the feedback input port FB may receive a first forward-coupled signal or a first backward-coupled signal corresponding to the first transmit signal.
The first transmitting branch 21 is configured to process a first transmitting signal output by the radio frequency transceiver 10;
specifically, the first transmitting branch 21 may amplify and filter a received first transmitting signal; with the input of the first transmitting branch 21 connected to the first transmitting port, a first transmitting signal can be received through the first transmitting port TX 1; the output end of the first transmitting branch is switchably connected to the first antenna ANT1 or the second antenna ANT2, so that the first transmitting signal can be selectively transmitted by the first antenna ANT1 or the second antenna ANT 2.
The first coupling device 31 is arranged between the first transmitting branch 21 and the first antenna ANT1, it is also understood that the first coupling device 31 may be arranged on the first transmitting branch to enable coupling of the transmitting signal to output the coupled signal.
Specifically, the first coupling device 31 has a first input terminal 31a, a first output terminal 31b, a first forward coupling terminal 31c and a first backward coupling terminal 31 d. Wherein:
the first input terminal 31a is coupled to the first transmitting branch 21, and is configured to receive a first transmitting signal processed by the first transmitting branch 21;
the first output terminal 31b, coupled to the first antenna ANT1, for outputting a first transmit signal to a first antenna ANT 1;
the first forward coupling terminal 31c is configured to output a first forward coupled signal of the first transmission signal, where the first forward coupled signal can be used to detect a forward power of the first transmission signal;
the first back coupling terminal is configured to output a first back coupling signal of a reflected signal of the first transmission signal, where the reflected signal is a signal reflected by the first antenna, and the first back coupling signal may be used to detect a back power of the first transmission signal.
The second coupling device 32 is disposed between the first transmitting branch 21 and the second antenna ANT2, and it is also understood that the second coupling device 32 may be disposed on the first transmitting branch 21 to enable coupling of the transmitting signal to output the coupled signal.
Specifically, the second coupling device 32 has a second input end 32a, a second output end 32b, a second forward coupling end 32c and a second backward coupling end 32 d. Wherein:
the second input terminal 32a is coupled to the second transmitting branch 21, and is configured to receive the first transmitting signal processed by the second transmitting branch 21;
the second output terminal 32b, coupled to the second antenna ANT2, is configured to output a first transmit signal to a second antenna ANT 2;
the second forward coupling end 32c is configured to output a first forward coupled signal of the first transmission signal, where the first forward coupled signal can be used to detect a forward power of the first transmission signal;
the second back coupling end is configured to output a first back coupling signal of a reflected signal of the first transmission signal, where the reflected signal is a signal reflected by the second antenna, and the first back coupling signal may be used to detect a back power of the first transmission signal.
The first switching device 40 is configured to control a first terminal and a second terminal of the first switching device to be in a conducting state, so that the coupling signal output by the first coupling device 31 or the second coupling device 32 is output to the first feedback input port FB 1.
Specifically, the first switch device 40 has two first terminals and one first terminal, and a first terminal 41a of the first switch device is switchably connected to the first forward coupling output terminal 31c or the first backward coupling terminal 31d, and is configured to receive the first forward coupling signal or the first backward coupling signal output by the first coupling device 31; the other first terminal 41b of the first switch device is switchably connected to the second forward coupling output terminal 32c or the second backward coupling terminal 32d for receiving the first forward coupling signal or the first backward coupling signal output by the second coupling device 32.
A second terminal 42a of the first switching device 40 is connected to the first feedback input port FB 1.
Specifically, when a first terminal 41a and a second terminal 42a of the first switching device 40 are in a conducting state, a second terminal 42a outputs the first forward-coupled signal or the first backward-coupled signal output by the first coupling device 31 to the first feedback input port FB 1; a second terminal 42a outputs the first forward coupled signal or the first backward coupled signal output by the second coupling device 32 to the first feedback input port FB1 when the other first terminal 41b and the second terminal 42a of the first switching device 40 are in a conducting state.
The first switch device may be a Single Pole Double Throw (SPDT) switch.
The radio frequency system provided by the embodiment of the application can realize power control on different antennas used by the same transmitting branch by using the first coupling device and the second coupling device, reduces link loss, improves radio frequency performance, realizes switching of power control on different antennas by using the first switching device, simplifies a power detection circuit, and has high circuit integration level and small occupied space.
Fig. 3(a) is a second schematic diagram of a radio frequency system of the system according to an embodiment of the present application. As shown in fig. 3(a), the radio frequency transceiver 10 is further configured with a second feedback input port FB 2;
specifically, the radio frequency transceiver 10 has a first feedback input port FB1 and a second feedback input port FB2, wherein the first feedback input port FB1 is configured to receive the first forward-coupled signal or the first backward-coupled signal output by the first coupling device 31; the second feedback input port FB2 is used for receiving the first forward coupled signal or the first backward coupled signal output by the second coupling device 32.
The first switch device is also provided with another second end which is connected with the second feedback input port;
specifically, a second end of the first switching device is configured to output the first forward-coupled signal or the first backward-coupled signal output by the first coupling device; and the other second end of the first switching device is used for outputting the first forward coupling signal or the first backward coupling signal output by the second coupling device.
A second terminal 42a outputs the first forward coupled signal or the first backward coupled signal output by the first coupling device 31 to the first feedback input port FB1 when a first terminal 41a and a second terminal 42a of the first switching device 40 are in a conducting state; when the other first terminal 41b and the other second terminal 42b of the first switching device 40 are in a conducting state, the other second terminal 42b outputs the first forward-coupled signal or the first backward-coupled signal output by the second coupling device 32 to the second feedback input port FB 2.
The first switch device may be a Double Pole Double Throw (DPDT) switch.
Fig. 3(b) is a third schematic diagram of a radio frequency system of the system according to an embodiment of the present application. As shown in fig. 3(b), the radio frequency system further includes: a second transmitting branch 22 and a third coupling device 33; wherein:
the radio frequency transceiver 10 is further configured with a second transmission port TX2, and the second transmission port TX2 is configured to output a second radio frequency signal.
The radio frequency system further comprises:
a second transmitting branch 22, configured to process a second transmitting signal output by the radio frequency transceiver 10;
specifically, the second transmitting branch 22 receives a second transmitting signal from the second transmitting port TX2 through the input end of the second transmitting branch 22, amplifies and filters the received second transmitting signal, and transmits the second transmitting signal through the third antenna ANT 3.
Specifically, the third coupling device 33 has a third input end 33a, a third output end 33b, a third forward coupling end 33c and a third backward coupling end 33 d. Wherein:
the third input terminal 33a is coupled to the second transmitting branch 22, and is configured to receive the second transmitting signal processed by the second transmitting branch 21;
the third output terminal 33b, coupled to the third antenna ANT1, for outputting a second transmit signal to a third antenna ANT 1;
the third forward coupling end 33c is configured to output a third forward coupled signal of the second transmission signal, where the third forward coupled signal can be used to detect the forward power of the second transmission signal;
the third backward coupling terminal 33d is configured to output a third backward coupling signal of a reflected signal of the second transmission signal, where the reflected signal is a signal reflected by a third antenna, and the third backward coupling signal can be used to detect a backward power of the second transmission signal.
The first switch device 40 further has another second end 42d, and the second end 42d of the first switch device 40 is switchably connected to the third forward coupling output end 33c or the third backward coupling end 33d for receiving the second forward coupling signal or the second backward coupling signal output by the third coupling device 3.
The first switching device 40 is used for controlling whether a second end 42a of the first switching device 40 and the other second end 42 are in a conducting state.
Specifically, when the second terminal 42a and the second terminal 42b of the first switching device 40 are in the conducting state, the second terminal 42b outputs the received second forward-coupled signal or the second backward-coupled signal to the second terminal 42b, and outputs the received second forward-coupled signal or the received second backward-coupled signal from the second terminal 42b to the first feedback input port FB1, so that the radio frequency transceiver 10 can receive the second forward-coupled signal or the second backward-coupled signal. When a second terminal 42a and the another second terminal 42b of the first switching device 40 are in the off state, if a first terminal 41a and a second terminal 42a of the first switching device 40 are in the on state, a second terminal 42a outputs the first forward coupling signal or the first backward coupling signal output by the first coupling device 31 to the first feedback input port FB 1; if the other first terminal 41b and a second terminal 42a of the first switching device 40 are in a conducting state, a second terminal 42a outputs the first forward-coupled signal or the first reverse-coupled signal output by the second coupling device 32 to the first feedback input port FB1, so that the radio frequency transceiver 10 can receive the first forward-coupled signal or the first reverse-coupled signal.
Preferably, the first switching device 40 further has a control terminal for receiving a first conducting signal, wherein the first conducting signal is used for controlling a conducting state between the terminal and the terminal of the first switching device 40.
By receiving the first conducting signal, different connection modes between the terminals of the first switching device 40 can be controlled, and the corresponding terminals are controlled to be in a conducting state according to the actual circuit operation condition.
In an embodiment of the present application, at least one of the first coupling device and the second coupling device comprises an enable terminal, a first coupling branch and a second coupling branch; wherein:
the enable terminal is used for receiving an enable signal, wherein the enable signal is used for controlling the first coupling branch or the second coupling branch to work;
in particular, the enable signal is used for selecting any coupling branch to be in an operating state according to management requirements.
The first coupling branch is used for collecting a feedback receiving signal of a first transmitting signal and realizing the function of a one-way coupler;
the second coupling branch is configured to obtain a first forward coupling signal of the first transmit signal and a first backward coupling signal of a reflection signal of the first transmit signal, and is configured to implement a function of a bidirectional coupler.
Based on the structure, the first coupling device and/or the second coupling device have the functions of a one-way coupler and a two-way coupler, so that the integration of the functions is realized, and the requirement of system operation is met.
Fig. 4(a) is a fourth schematic diagram of an rf system of an embodiment of the present application. As shown in fig. 4(a), the radio frequency system further includes a second switching device 50 and/or a third switching device 60; wherein:
the second switching device 50 is used for outputting the coupling signal outputted by the first coupling device 31 to a first end 41a of the first switching device 40.
Specifically, the second switching device 50 has two first terminals and one first terminal, wherein:
a first end 51a of the second switching device is connected to the first forward coupling output end 31c, and is configured to receive the first forward coupling signal output by the first coupling device 31;
the other first end 51b of the second switching device is connected to the first reverse coupling output end 31d, and is configured to receive the first reverse coupling signal output by the first coupling device 31;
a second terminal 52a of the second switching device is connected to a first terminal 41a of the first switching device 40 for receiving the first forward coupled signal or the first backward coupled signal output by the first coupling device 31.
If a first terminal 51a and a second terminal 52a of the second switching device 50 are in the conducting state, a second terminal 52a of the second switching device 50 outputs the first forward coupling signal output by the first coupling device 31 to a first terminal 41a of the first switching device 40; if the other first terminal 51b and a second terminal 52a of the second switching device 50 are in a conducting state, a second terminal 52a of the second switching device 50 outputs the first reverse coupling signal output by the first coupling device 31 to a first terminal 41a of the first switching device 40, so that a first terminal 41a of the first switching device 40 is switchably connected to the first forward coupling output terminal 31c or the first reverse coupling output terminal 31 d.
The third switching device 60 is configured to output the coupling signal output by the second coupling device 32 to the other first end 41b of the first switching device 40.
Specifically, the third switching device 60 has two first terminals and one first terminal, wherein:
a first terminal 61a of the second switching device is connected to the second forward coupling output terminal 32c, and is configured to receive the first forward coupling signal output by the second coupling device 32;
the other first end 61b of the second switching device is connected to the second reverse-coupling output end 32d, and is configured to receive the first reverse-coupling signal output by the second coupling device 32;
a second terminal 62a of the second switching device is connected to the other first terminal 41b of the first switching device 40 for receiving the first forward coupled signal or the first backward coupled signal output by the second coupling device 32.
If a first terminal 61a and a second terminal 62a of the third switching device 60 are in conduction state, a second terminal 62a of the third switching device 60 outputs the first forward coupling signal output by the second coupling device 32 to the other first terminal 41b of the first switching device 40; if the other first terminal 61b and the second terminal 62a of the third switching device 60 are in a conducting state, the second terminal 62a of the second switching device 60 outputs the first reverse coupling signal output by the first coupling device 32 to the other first terminal 41b of the first switching device 40, so that the other first terminal 41b of the first switching device 40 is switchably connected to the second forward coupling output terminal 32c or the second reverse coupling output terminal 32 d.
Fig. 4(b) is a fourth schematic diagram of an rf system of an embodiment of the system of the present application. As shown in fig. 4(b), the rf system further includes a first resistor R1 and/or a second resistor R2; wherein:
the second switching device 50 also has another second terminal 52 b;
a first resistor R1, one end of the first resistor R1 is connected to the other second end 52b of the second switching device 50, and the other end of the first resistor R1 is grounded.
Specifically, the first resistor may have a resistance of 50 ohms, which is used to isolate interference of the coupling signal output from the second end 52a of the second switching device 50 with the first transmission signal.
Preferably, the second switching device 50 further has a control terminal for receiving a second conducting signal, wherein the second conducting signal is used for controlling a conducting state between the terminal and the terminal of the second switching device.
The second switching device 50 may control different connection modes between the terminals of the second switching device 50 by receiving the second conduction signal, and control the corresponding terminals to be in a conduction state according to an actual circuit operation condition.
The third switching device 60 also has another second terminal 62 b;
one end of the second resistor R2 is connected to the other second end of the third switching device 60, and the other end of the second resistor R2 is grounded.
Specifically, the first resistor may have a resistance of 50 ohms, and is used to isolate interference of the coupling signal output from a second terminal 62a of the third switching device 60 with the first transmission signal.
Preferably, the third switching device further has a control terminal for receiving a third conducting signal, wherein the third conducting signal is used for controlling a conducting state between the terminal and the terminal of the third switching device.
The third switching device 60 may control different connection modes between the terminals of the third switching device 60 by receiving the second conducting signal, and control the corresponding terminals to be in a conducting state according to the actual circuit operation condition.
Fig. 4(c) is a fifth schematic diagram of a radio frequency system of an embodiment of the system of the present application. As shown in fig. 4(c), the radio frequency system further includes a switch control circuit 70;
the switch control circuit 70 is configured to output a first on signal.
Specifically, the switch control circuit 70 may be connected to the control terminal of the first switching device 40, and may control the conduction state between the terminals of the first switching device 40 by sending a first conduction signal to the control terminal of the first switching device 40.
The switch control circuit 70 is configured to output a second conducting signal.
Specifically, the switch control circuit 70 may be connected to the control terminal of the second switching device 50, and may control the conduction state between the terminals of the second switching device 50 by sending a second conduction signal to the control terminal of the second switching device 50.
The switch control circuit 70 is configured to output a third conducting signal.
Specifically, the switch control circuit 70 may be connected to the control terminal of the third switching device 60, and may control the conduction state between the terminals of the third switching device 60 by sending a third conduction signal to the control terminal of the third switching device 60.
Preferably, the switch control circuit can be connected to the switch device through a General-purpose input/output (GPIO) interface.
Fig. 5(a) is a schematic diagram of a first application of a radio frequency system according to an embodiment of the present application. As shown in fig. 5(a), the radio frequency system includes a radio frequency transceiver 10, a first transmitting branch 21, a first receiving branch 23, a switch K, a first switching device 40, a second switching device 50, a third switching device 40, and 2 couplers; wherein:
said radio frequency transceiver 10 having a first transmit port TX1, a first receive port RX1, a first feedback input port FB1 and a second feedback input port FB 2; wherein the first receiving port RX1 is used for receiving a first receiving signal;
the first transmitting branch 21 includes a first power amplifier PA1 and a first filter circuit LB1, which is switchably connected to the first antenna ANT1 or the second antenna ANT2, and is configured to amplify and filter a first transmit signal output by the first transmitting port TX1, and output the first transmit signal through the first antenna ANT1 or the second antenna ANT 2;
the first receiving branch 23 includes a low noise amplifier LNA, a second power amplifier PA2, and is switchably connected to the first antenna ANT1 or the second antenna ANT2, and is configured to receive the first receiving signal through the first antenna ANT1 or the second antenna ANT2, filter and amplify the first receiving signal, and output the filtered first receiving signal through the first receiving port RX 1.
The switch K has two first ends and two second ends, wherein one first end is connected to the first transmitting branch 21, and the other first end is connected to the first receiving branch 23, and is configured to control the first transmitting branch or the first receiving branch to transmit the radio frequency signal by using the first antenna ANT1 or the second antenna ANT 2.
Two couplers, CPL1 and CPL2 respectively, wherein CPL1 is a first coupling device, and CPL2 is a second coupling device; wherein:
the input terminal of CPL1 is coupled to a second terminal of the switch K, the output terminal is coupled to the first antenna ANT1, the forward coupling terminal is connected to a first terminal 51a of the second switch device 50, and the backward coupling terminal is connected to another first terminal 51b of the second switch device 50.
The input end of the CPL2 is coupled with the other second end of the switch K, and the output end of the CPL2 is coupled with a second antenna ANT 2; the forward coupling terminal is connected to a first terminal 61a of the third switching device 60, and the reverse coupling terminal is connected to another first terminal 61b of the third switching device 60.
A first terminal 41a of the first switching device 40 is connected to a second terminal 52a of the second switching device 50, another first terminal 41b of the first switching device 40 is connected to a second terminal 62a of the third switching device 60, a second terminal 42a of the first switching device 40 is connected to the first feedback input port FB1, and a second terminal 42a of the first switching device 40 is connected to the first feedback input port FB 2.
And when a first end and any second end of the change-over switch K are in a conducting state, controlling the coupler to execute power detection operation.
If the first end and the second end of the switch K are in the conducting state, which indicates that the first transmitting branch 21 transmits the first transmitting signal through the first antenna ANT1, the CPL1 is controlled to perform the coupling operation by controlling the conducting state of the second switching device 50, and the first end 41a and the second end 42a of the first switching device 40 are conducted to be in the conducting state, so that the coupling signal obtained by the coupling processing of the CPL1 is transmitted to the rf transceiver 10.
If the first end and the second end of the switch K are in a conducting state, which indicates that the first transmitting branch 21 transmits the first transmitting signal through the second antenna ANT2, the CPL2 is controlled to perform a coupling operation by controlling the conducting state of the third switching device 60, and the first end 41b and the second end 42b of the first switching device 40 are conducted to be in a conducting state, so that the coupling signal obtained by the coupling processing of the CPL2 is transmitted to the rf transceiver 10.
Fig. 5(b) is a schematic diagram of a second application of the radio frequency system according to the embodiment of the present application. As shown in fig. 5(a), the radio frequency system includes a radio frequency transceiver 10, a first transmitting branch 21, a first receiving branch 23, a switch K, a first switching device 40, a second switching device 50, a third switching device 40, and 3 couplers; wherein:
the radio frequency transceiver 10 is provided with a first transmitting port TX1, a first receiving port RX1 and a first feedback input port FB 1; wherein the first receiving port RX1 is used for receiving a first receiving signal;
the first transmitting branch 21 includes a first power amplifier PA1 and a first filter circuit LB1, which is switchably connected to the first antenna ANT1 or the second antenna ANT2, and is configured to amplify and filter a first transmit signal output by the first transmitting port TX1, and output the first transmit signal through the first antenna ANT1 or the second antenna ANT 2;
the first receiving branch 23 includes a low noise amplifier LNA and a second filter circuit LB2, is switchably connected to the first antenna ANT1 or the second antenna ANT2, and is configured to receive the first receiving signal through the first antenna ANT1 or the second antenna ANT2, filter and amplify the first receiving signal, and output the first receiving signal through the first receiving port RX 1.
The second transmitting branch 21 includes a second power amplifier PA2 and a third filter circuit LB1, is connected to the third antenna ANT3, and is configured to amplify and filter the second transmit signal output by the second transmit port TX2, and output the second transmit signal through the third antenna ANT 3;
the switch K has two first ends and two second ends, wherein one first end is connected to the first transmitting branch 21, and the other first end is connected to the first receiving branch 23, and is configured to control the first transmitting branch or the first receiving branch to transmit the radio frequency signal by using the first antenna ANT1 or the second antenna ANT 2.
Three couplers, CPL1, CPL2 and CPL3, wherein CPL1 is a first coupler, CPL2 is a second coupler, and CPL3 is a third coupler; wherein:
the input end of the CPL1 is coupled to a second end of the switch K, the output end is coupled to the first antenna ANT1, the forward coupling end is connected to a first end 51a of the second switch device 50, and the reverse coupling end is connected to another first end 51b of the second switch device 50;
the input end of the CPL2 is coupled with the other second end of the switch K, and the output end is coupled with a second antenna ANT 2; the forward coupling terminal is connected to a first terminal 61a of the third switching device 60, and the backward coupling terminal is connected to another first terminal 61b of the third switching device 60;
the input end of the CPL3 is coupled to the second transmitting branch 22, and the output end is coupled to the third antenna ANT 3; wherein the other second terminal 42b of the third switching device is switchably connected to the forward coupling terminal and the backward coupling terminal.
A first terminal 41a of the first switching device 40 is connected to a second terminal 52a of the second switching device 50, another first terminal 41b of the first switching device 40 is connected to a second terminal 62a of the third switching device 60, and a second terminal 42a of the first switching device 40 is connected to the first feedback input port FB 1.
And when a first end and any second end of the change-over switch K are in a conducting state, controlling the coupler to execute power detection operation.
If the first end and the second end of the switch K are in the conducting state, which indicates that the first transmitting branch 21 transmits the first transmitting signal through the first antenna ANT1, the CPL1 is controlled to perform the coupling operation by controlling the conducting state of the second switching device 50, and the first end 41a and the second end 42a of the first switching device 40 are conducted to be in the conducting state, so that the coupling signal obtained by the coupling processing of the CPL1 is transmitted to the rf transceiver 10.
If the first end and the second end of the switch K are in the conducting state, which indicates that the first transmitting branch 21 transmits the first transmitting signal through the second antenna ANT2, the CPL2 is controlled to perform the coupling operation by controlling the conducting state of the third switching device 60, and the first end 41b and the second end 42a of the first switching device 40 are in the conducting state, so that the coupling signal obtained by the coupling processing of the CPL2 is transmitted to the rf transceiver 10.
When the first terminal and any one of the second terminals of the switch K are in the off state, if the CPL3 outputs the second forward feedback signal or the second backward coupling signal, the second terminal and the other second terminal 42b of the first switch device 40 are controlled to be in the on state, so that the second forward feedback signal or the second backward coupling signal received by the other second terminal 42b is output to the first feedback input port FB1 through the first terminal 42 a.
The embodiment of the application also provides electronic equipment, wherein the radio frequency system in any one of the embodiments is arranged on the electronic equipment, and the radio frequency system is arranged on the electronic equipment, so that the power detection of a transmitted signal is realized, the power control of an antenna is realized, meanwhile, the area of a PCB occupied by the radio frequency system is saved, and the link loss of a radio frequency access is reduced.
It will be understood by those of ordinary skill in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
Claims (10)
1. A radio frequency system, comprising:
a radio frequency transceiver configured with a first transmit port and a first feedback input port;
the input end of the first transmitting branch is connected with the first transmitting port, and the output end of the first transmitting branch is switchably connected with a first antenna or a second antenna and is used for processing a first transmitting signal output by the radio frequency transceiver;
a first coupling device having a first input terminal, a first output terminal, a first forward coupling terminal and a first backward coupling terminal; wherein the first input is coupled with the first transmit branch and the first output is coupled with the first antenna; the first forward coupling end is used for outputting a first forward coupling signal of the first transmission signal; the first backward coupling end is used for outputting a first backward coupling signal of a reflection signal of the first transmission signal;
a second coupling device having a second input terminal, a second output terminal, a second forward coupling terminal and a second backward coupling terminal; wherein the second input is coupled to the second transmit branch and the second output is coupled to the second antenna; the second forward coupling end is used for outputting a first forward coupling signal of the first transmission signal; the second back coupling end is used for outputting a first back coupling signal of a reflection signal of the first transmission signal;
a first switch device having two first terminals and one first terminal, wherein one first terminal of the first switch device is switchably connected to the first forward-coupled output terminal or the first backward-coupled terminal, the other first terminal of the first switch device is switchably connected to the second forward-coupled output terminal or the second backward-coupled terminal, and a second terminal of the first switch device is connected to the first feedback input port; the first switch device is used for controlling a first end and a second end of the first switch device to be in a conducting state.
2. The radio frequency system of claim 1, wherein:
the radio frequency transceiver is also provided with a second feedback input port;
the first switch device is also provided with another second end which is connected with the second feedback input port;
a second terminal of the first switching device is configured to output the first forward-coupled signal or the first backward-coupled signal output by the first coupling device;
and the other second end of the first switching device is used for outputting the first forward coupling signal or the first backward coupling signal output by the second coupling device.
3. The radio frequency system of claim 1, wherein:
the radio frequency transceiver is also provided with a second transmitting port;
the radio frequency system further comprises:
the input end of the second transmitting branch is connected with the second transmitting port, and the output end of the second transmitting branch is connected with the third antenna and used for processing a second transmitting signal output by the radio frequency transceiver;
a third bidirectional coupler having a third input terminal, a third output terminal, a third forward coupling terminal, and a third backward coupling terminal; wherein said third input is coupled to said second transmit branch and said third output is coupled to said third antenna; the third forward coupling end is used for outputting a second forward coupling signal of the second transmission signal; the third back coupling end is used for outputting a second back coupling signal of a reflection signal of the second transmission signal;
the first switch device further has another second terminal, the second terminal of the first switch device is switchably connected to the third forward-coupled output terminal or the third backward-coupled terminal, and the first switch device is configured to control whether the second terminal and the another second terminal of the first switch device are in a conducting state.
4. A radio frequency system according to any one of claims 1 to 3, wherein:
the first switching device further has a control terminal for receiving a first turn-on signal, wherein the first turn-on signal is used for controlling a turn-on state between the terminal and the terminal of the first switching device.
5. The radio frequency system of claim 1, wherein:
at least one of the first coupling device and the second coupling device comprises an enabling end, a first coupling branch and a second coupling branch; wherein:
the enable terminal is used for receiving an enable signal, wherein the enable signal is used for controlling the first coupling branch or the second coupling branch to work;
the first coupling branch is used for collecting a feedback receiving signal of a first transmitting signal;
the second coupling branch is configured to obtain a first forward coupling signal of the first transmit signal and a first backward coupling signal of a reflection signal of the first transmit signal.
6. The radio frequency system of claim 1, further comprising:
the second switching device has two first terminals and one first terminal, one first terminal of the second switching device is connected to the first forward coupling output terminal, the other first terminal of the second switching device is connected to the first backward coupling output terminal, and a second terminal of the second switching device is used for outputting the coupling signal output by the first forward coupling output terminal or the first backward coupling output terminal;
and/or the presence of a gas in the atmosphere,
the third switching device has two first terminals and one first terminal, one first terminal of the third switching device is connected to the second forward coupling output terminal, the other first terminal of the third switching device is connected to the second backward coupling output terminal, and a second terminal of the third switching device is used for outputting the coupling signal output by the second forward coupling output terminal or the second backward coupling output terminal.
7. The radio frequency system according to claim 6, wherein:
at least one of the second switching device and the third switching device further has another second terminal;
the radio frequency system further comprises:
one end of the first resistor is connected with the other second end of the second switching device, and the other end of the first resistor is grounded;
and/or the presence of a gas in the gas,
and one end of the second resistor is connected with the other second end of the third switching device, and the other end of the second resistor is grounded.
8. The radio frequency system according to claim 6, wherein the radio frequency system further comprises a controller for controlling the operation of the radio frequency generator
The second switch device is also provided with a control end for receiving a second conducting signal, wherein the second conducting signal is used for controlling the conducting state between the end and the terminal of the second switch device;
and/or the presence of a gas in the atmosphere,
the third switching device also has a control terminal for receiving a third turn-on signal, wherein the third turn-on signal is for controlling a conduction state between the terminal and the terminal of the third switching device.
9. The radio frequency system of claim 8, further comprising:
the switch control circuit is connected with the first switch device and used for outputting a first conducting signal; and/or, the second switch device is connected to output a second conducting signal; and/or, the second switch device is connected with the first switch device and is used for outputting a second conducting signal.
10. An electronic device comprising a radio frequency system as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210902486.2A CN115133951A (en) | 2022-07-28 | 2022-07-28 | Radio frequency system and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210902486.2A CN115133951A (en) | 2022-07-28 | 2022-07-28 | Radio frequency system and electronic equipment |
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| Publication Number | Publication Date |
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| CN115133951A true CN115133951A (en) | 2022-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210902486.2A Pending CN115133951A (en) | 2022-07-28 | 2022-07-28 | Radio frequency system and electronic equipment |
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| CN213661596U (en) * | 2020-12-02 | 2021-07-09 | Oppo广东移动通信有限公司 | Radio frequency L-PA Mid device, radio frequency transceiving system and communication equipment |
| CN113839688A (en) * | 2020-06-23 | 2021-12-24 | Oppo广东移动通信有限公司 | Radio frequency PA Mid device, radio frequency system and communication equipment |
| CN113839681A (en) * | 2020-06-23 | 2021-12-24 | Oppo广东移动通信有限公司 | Radio frequency PA Mid device, radio frequency system and communication equipment |
| CN113992231A (en) * | 2021-12-28 | 2022-01-28 | 荣耀终端有限公司 | Radio frequency transceiving module and electronic equipment |
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| CN113839688A (en) * | 2020-06-23 | 2021-12-24 | Oppo广东移动通信有限公司 | Radio frequency PA Mid device, radio frequency system and communication equipment |
| CN113839681A (en) * | 2020-06-23 | 2021-12-24 | Oppo广东移动通信有限公司 | Radio frequency PA Mid device, radio frequency system and communication equipment |
| CN213661596U (en) * | 2020-12-02 | 2021-07-09 | Oppo广东移动通信有限公司 | Radio frequency L-PA Mid device, radio frequency transceiving system and communication equipment |
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