CN114567343B - Circuit for power feedback - Google Patents
Circuit for power feedback Download PDFInfo
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- CN114567343B CN114567343B CN202210138054.9A CN202210138054A CN114567343B CN 114567343 B CN114567343 B CN 114567343B CN 202210138054 A CN202210138054 A CN 202210138054A CN 114567343 B CN114567343 B CN 114567343B
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- coupler
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- 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
- H04B1/40—Circuits
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The application aims to provide a power feedback circuit, which is characterized in that a first contact of a first end of a link change-over switch is connected with a second end of a first coupler switch, and an output end of a coupler is connected with the first contact of the first end of the first coupler switch to form a first feedback link so as to feed back first power; the first contact of the link changeover switch is connected with the second end of the second coupler switch, and the second coupler is connected with the first end of the second coupler switch to form a second feedback link for feeding back second power; the first contact of the first end of the link change-over switch is connected with the second end of the first coupler switch, and the first coupler is connected with the second contact of the first end of the first coupler switch to form a third feedback link, and the third power is fed back, so that the occupation of system resources is reduced, the area of a printed circuit board is saved, and the manufacturing cost of a product is reduced while the requirement that the isolation between the feedback links reaches the design index is met.
Description
Technical Field
The application relates to the technical field of communication, in particular to a power feedback circuit.
Background
The 5G mobile communication network has a unique networking architecture of NSA, namely, generally, we say ENDCs: the two paths of signals of 5G and 4G are connected in double, namely, the two paths of signals of 5G and 4G are required to be transmitted and received simultaneously, and the mutual noninterference is ensured.
Currently, the control of the transmit power of the terminal is generally performed by matching the FBRX module inside the radio frequency transceiver with a related software algorithm. The basic principle of the operation is that power is fed back to a radio frequency transceiver through a coupler on a transmitting link, the power output of a power amplifier PA is dynamically adjusted, and through link simulation calculation, isolation requirements of at least 40Db are required between 5G and 4G TX FBRX links, otherwise, interference to transmitting and receiving signals of one system during high-power transmission of the other system can be caused. Since the RF transceiver has only one FBRX pin and is a time division receiving mechanism, a switch is required to switch between different TX FBRX links, however, the isolation between the switch pins RF1 and RF2 is only about 20 to 30Db, so that in order to meet the design requirement, the 5G and 4GTX FBRX links are generally implemented by a logic configuration in a cascade connection manner of two switches. As shown in fig. 1, when the 4G FBRX (ANT 1) link needs to be conducted with the radio frequency transceiver, the switch SW0 is controlled to be adjusted to the RF2 pin, the switch SW1 is controlled to be adjusted to the RF1 pin, and the coupler inside the 4G PA module and the coupler switch inside the 4G PA module are in a conducting state; when the 5G FBRX (ANT 0) link needs to be conducted with the radio frequency transceiver, the switch SW0 is controlled to be adjusted to the pin RF3, the switch SW1 is controlled to be adjusted to the pin RF2, and the coupler inside the 4G PA module and the coupler switch inside the 4G PA module are in a disconnected state. Therefore, under the condition of not considering the link loss, the two FBRX links have the isolation degree after superposition of two switches, namely about 40 to 60Db, and the switch SW1 occupies certain system resources (such as GPIO signals and power supply networks) while meeting the requirements of design indexes, and meanwhile, influences the PCB layout with insufficient area.
Disclosure of Invention
The application aims to provide a power feedback circuit so as to meet the requirement that the isolation between feedback links meets design indexes, reduce the occupation of system resources, save the area of a printed circuit board and reduce the manufacturing cost of products.
According to one aspect of the present application, there is provided a power feedback circuit, wherein the power feedback circuit comprises a first power amplifier module, a second power amplifier module, a radio frequency transceiver, wherein,
the first transmitting module of the radio frequency transceiver is respectively connected with the input end of the power amplifier and the input end of the first power amplifier module, the output end of the power amplifier is connected with the input end of the corresponding coupler, and the first power amplifier module comprises a first coupler and a corresponding switch;
the second transmitting module of the radio frequency transceiver is connected with the input end of the second power amplifier module, and the second power amplifier module comprises a second coupler and a corresponding switch;
the transmitting feedback receiving module of the radio frequency transceiver is connected with the second end of a link change-over switch;
a first contact of a first end of the link changeover switch is connected with a second end of the switch of the first coupler, and the first contact of the first end of the switch of the first coupler is connected with an output end of the coupler to form a first feedback link for feeding back first power;
a second contact of the first end of the link changeover switch is connected with the second end of the switch of the second coupler, and the first end of the switch of the second coupler is connected with the second coupler to form a second feedback link for feeding back second power;
the first contact of the first end of the link changeover switch is connected with the second end of the switch of the first coupler, and the second contact of the first end of the switch of the first coupler is connected with the first coupler to form a third feedback link, and third power is fed back.
Further, in the above-mentioned power feedback circuit, the circuit further includes:
and switching the link changeover switch to a first contact of a first end of the link changeover switch, conducting the first contact of the first end of the switch of the first coupler with a second end of the switch of the first coupler, and disconnecting the first end of the switch of the second coupler with the second end of the switch of the second coupler so that the first power reaches a transmitting feedback receiving module of the radio frequency transceiver through the first feedback link.
Further, in the above-mentioned power feedback circuit, the circuit further includes:
and switching the link switch to a second contact of the first end of the link switch, disconnecting the first end of the switch of the first coupler from the second end of the switch of the first coupler, and conducting the first end of the switch of the second coupler from the second end of the switch of the second coupler so that the second power reaches a transmitting feedback receiving module of the radio frequency transceiver through the second feedback link.
Further, in the above-mentioned power feedback circuit, the circuit further includes:
and switching the link changeover switch to a first contact of a first end of the link changeover switch, conducting a second contact of a first end of a switch of the first coupler with a second end of the switch of the first coupler, and disconnecting the first end of the switch of the second coupler with the second end of the switch of the second coupler so that the third power reaches a transmitting feedback receiving module of the radio frequency transceiver through the third feedback link.
Further, in the above-mentioned power feedback circuit, the circuit further includes:
the first power amplifier module can conduct power of different frequency bands by configuring a driving code in a register of a switch of the first coupler.
Compared with the prior art, the first transmitting module of the radio frequency transceiver is respectively connected with the input end of the power amplifier and the input end of the first power amplifier module, the output end of the power amplifier is connected with the input end of the corresponding coupler, and the first power amplifier module comprises a first coupler and a corresponding switch; the second transmitting module of the radio frequency transceiver is connected with the input end of the second power amplifier module, and the second power amplifier module comprises a second coupler and a corresponding switch; the transmitting feedback receiving module of the radio frequency transceiver is connected with the second end of a link change-over switch; the first contact of the first end of the link changeover switch is connected with the second end of the switch of the first coupler, and the output end of the coupler is connected with the first contact of the first end of the switch of the first coupler so as to form a first feedback link and feed back first power; a second contact of the first end of the link changeover switch is connected with a second end of the switch of the second coupler, and the second coupler is connected with the first end of the switch of the second coupler to form a second feedback link for feeding back second power; the first contact of the first end of the link change-over switch is connected with the second end of the switch of the first coupler, the first coupler is connected with the second contact of the first end of the switch of the first coupler to form a third feedback link, and the third power is fed back, so that the occupation of system resources is reduced, the area of a printed circuit board is saved, and the manufacturing cost of a product is reduced while the requirement that the isolation between feedback links reaches the design index is met.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of a prior art circuit connection for feeding back power;
FIG. 2 illustrates a schematic diagram of a circuit connection for power feedback in accordance with an aspect of the present application;
fig. 3 shows a connection schematic of a circuit for power feedback according to an aspect of the application as applied in practice.
The same or similar reference numbers in the drawings refer to the same or similar parts.
Detailed Description
The application is described in further detail below with reference to the accompanying drawings.
As shown in fig. 2, a schematic circuit connection diagram of a power feedback according to an aspect of the present application. Wherein the power feedback circuit comprises a first power amplifier module, a second power amplifier module and a radio frequency transceiver, wherein,
the first transmitting module of the radio frequency transceiver is respectively connected with the input end of the power amplifier and the input end of the first power amplifier module, the output end of the power amplifier is connected with the input end of the corresponding coupler, and the first power amplifier module comprises a first coupler and a corresponding switch.
Here, if one of the two links is enabled to multiplex the other link, it is required to ensure that signals cannot pass through simultaneously in the two links that can be multiplexed, and since the same transmitting module of the radio frequency transceiver cannot send out two signals simultaneously, in order to ensure that signals cannot pass through simultaneously in the two links, both the two links that need to be multiplexed are connected to the same transmitting module of the radio frequency transceiver, so that when one of the two links passes through a signal, the other link is in an idle state; therefore, the first transmitting module of the radio frequency transceiver needs to be connected with the input end of the power amplifier and the input end of the first power amplifier module respectively to form two links capable of multiplexing, wherein, due to different power amplifiers or different frequency bands of signals supported by the power amplifier modules, the signals sent by the first transmitting module of the radio frequency transceiver can select different links according to the different frequency bands of signals supported by the power amplifiers and the first power amplifier modules.
The second transmitting module of the radio frequency transceiver is connected with the input end of the second power amplifier module, and the second power amplifier module comprises a second coupler and a corresponding switch; in order to realize that one of the two links can multiplex the other link, the second transmitting module of the radio frequency transceiver may be connected with two links to be multiplexed at the same time, and the principle of the second transmitting module of the radio frequency transceiver is the same as that of the first transmitting module of the radio frequency transceiver which is connected with two links to be multiplexed at the same time.
The transmitting feedback receiving module of the radio frequency transceiver is connected with the second end of a link change-over switch; the transmitting feedback module of the radio frequency transceiver is used for receiving the fed-back signal power in a time division mode.
A first contact of a first end of the link changeover switch is connected with a second end of the switch of the first coupler, and the first contact of the first end of the switch of the first coupler is connected with an output end of the coupler to form a first feedback link for feeding back first power; here, as shown in fig. 2, the first contact RF1 at the first end of the link switch is connected to the second end of the switch of the first coupler through the coupler output interface of the first power amplifier module, and the first contact RF1 at the first end of the switch of the first coupler is connected to the output end of the coupler through the coupler input interface of the first power amplifier module; when the frequency band of the signal transmitted by the first transmitting module of the radio frequency transceiver can be supported by the power amplifier, the first power fed back is fed back to the transmitting feedback receiving module of the radio frequency transceiver through the first feedback link.
A second contact of the first end of the link changeover switch is connected with the second end of the switch of the second coupler, and the first end of the switch of the second coupler is connected with the second coupler to form a second feedback link for feeding back second power; here, as shown in fig. 2, the second contact RF2 of the first end of the link changeover switch is connected to the second end of the switch of the second coupler through the coupler output interface of the second power amplifier module.
The first contact of the first end of the link changeover switch is connected with the second end of the switch of the first coupler, and the second contact of the first end of the switch of the first coupler is connected with the first coupler to form a third feedback link, and third power is fed back. Here, as shown in fig. 2, a first contact RF1 of a first end of the link switching switch is connected to a second end of the switch of the first coupler through a coupler output interface of the first power amplifier module, and a second contact RF2 of a first end of the switch of the first coupler is connected to the first coupler; when the frequency band of the signal transmitted by the first transmitting module of the radio frequency transceiver can be supported by the first power amplifier module, the third power fed back is fed back to the transmitting feedback receiving module of the radio frequency transceiver through the third feedback link; the feedback of the first power and the feedback of the third power are not performed simultaneously, that is, when the first power is fed back through the first feedback link, the third feedback link does not have the feedback of the third power, otherwise, when the third power is fed back through the third feedback link, the first feedback link does not have the feedback of the first power.
Through the above, the first transmitting module of the radio frequency transceiver of the present application is respectively connected with the input end of the power amplifier and the input end of the first power amplifier module, the output end of the power amplifier is connected with the input end of the corresponding coupler, and the first power amplifier module comprises a first coupler and the corresponding switch thereof; the second transmitting module of the radio frequency transceiver is connected with the input end of the second power amplifier module, and the second power amplifier module comprises a second coupler and a corresponding switch; the transmitting feedback receiving module of the radio frequency transceiver is connected with the second end of a link change-over switch; the first contact of the first end of the link changeover switch is connected with the second end of the switch of the first coupler, and the output end of the coupler is connected with the first contact of the first end of the switch of the first coupler so as to form a first feedback link and feed back first power; a second contact of the first end of the link changeover switch is connected with a second end of the switch of the second coupler, and the second coupler is connected with the first end of the switch of the second coupler to form a second feedback link for feeding back second power; the first contact of the first end of the link change-over switch is connected with the second end of the switch of the first coupler, the first coupler is connected with the second contact of the first end of the switch of the first coupler to form a third feedback link, and the third power is fed back, so that the occupation of system resources is reduced, the area of a printed circuit board is saved, and the manufacturing cost of a product is reduced while the requirement that the isolation between feedback links reaches the design index is met.
For example, in a preferred embodiment of the present application, the power amplifier is preferably a 5G power amplifier, the first power amplifier module is preferably a 5G power amplifier module, and the second power amplifier module is preferably a 4G power amplifier module. The method comprises the steps of respectively connecting a first transmitting module of the radio frequency transceiver with an input end of a 5G power amplifier and an input end of a 5G power amplifier module, connecting an output end of the 5G power amplifier with an input end of a coupler, connecting an output end of the coupler with a first contact of a first end of a first coupler switch in the 5G power amplifier module, connecting a second end of the first coupler switch with a first contact of a first end of a link switch, connecting a second end of the link switch with a transmitting feedback module of the radio frequency transceiver to form a first feedback link, and feeding back power of a first frequency band 5G signal; connecting the first coupler in the 5G power amplifier module with a second contact of a first end of a first coupler switch in the 5G power amplifier module, connecting the second end of the first coupler switch with a first contact of a first end of the link switch, and connecting the second end of the link switch with a transmitting feedback module of the radio frequency transceiver to form the third feedback link and feed back the power of a second frequency band 5G signal; connecting a second transmitting module of the radio frequency transceiver with an input end of the 4G power amplifier module, connecting the second coupler in the 4G power amplifier module with a first end of a second coupler switch in the 4G power amplifier module, connecting the second end of the second coupler switch with a second contact of a first end of the link switch, and connecting the second end of the link switch with a transmitting feedback module of the radio frequency transceiver to form a second feedback link for feeding back the power of a 4G signal; since the first transmitting module of the radio frequency transceiver and the second transmitting module of the radio frequency transceiver are constantly transmitting signals, the transmitting feedback receiving module of the radio frequency transceiver collects the power of the signals in a time division manner, that is, preferably, the first millisecond is used for receiving the power of the 5G signals, the second millisecond is used for receiving the power of the 4G signals, the third millisecond is used for receiving the power of the 5G signals, the fourth millisecond is used for receiving the power of the 4G signals, and the receiving of the signal power is achieved in a reciprocating manner.
Following the above-described embodiment of the present application, the circuit further includes:
and switching the link changeover switch to a first contact of a first end of the link changeover switch, conducting the first contact of the first end of the switch of the first coupler with a second end of the switch of the first coupler, and disconnecting the first end of the switch of the second coupler with the second end of the switch of the second coupler so that the first power reaches a transmitting feedback receiving module of the radio frequency transceiver through the first feedback link.
For example, in a preferred embodiment of the present application, the first transmitting module of the radio frequency transceiver transmits a first band 5G signal of a band supported by the 5G power amplifier, the second transmitting module of the radio frequency transceiver transmits a 4G signal, if the first power of the first band 5G signal needs to be fed back, in order that the first power and the second power of the 4G signal transmitted by the second transmitting module of the radio frequency transceiver do not affect each other, the link switch is switched to a first contact of a first end of the link switch by controlling the switch to be closed, the first contact of a first end of the switch of the first coupler is conducted to a second end of the switch of the first coupler, and the first end of the switch of the second coupler is disconnected from the second end of the switch of the second coupler, so that the isolation requirement between the first power and the second power can be achieved by two switches.
Following the above-described embodiment of the present application, the circuit further includes:
and switching the link switch to a second contact of the first end of the link switch, disconnecting the first end of the switch of the first coupler from the second end of the switch of the first coupler, and conducting the first end of the switch of the second coupler from the second end of the switch of the second coupler so that the second power reaches a transmitting feedback receiving module of the radio frequency transceiver through the second feedback link.
For example, in a preferred embodiment of the present application, the first transmitting module of the radio frequency transceiver transmits a first frequency band 5G signal, the second transmitting module of the radio frequency transceiver transmits a 4G signal, if the second power of the 4G signal needs to be fed back, in order that the second power and the first power corresponding to the first frequency band 5G signal do not affect each other, the link switch is switched to the second contact of the first end of the link switch by controlling the switch to be closed, the first contact of the first end of the switch of the first coupler is disconnected from the second end of the switch of the first coupler, and the first end of the switch of the second coupler is conducted with the second end of the switch of the second coupler, so that the requirement of isolation between the second power and the first power or the third power can be achieved through two switches.
For example, in another preferred embodiment of the present application, the first transmitting module of the radio frequency transceiver transmits a second frequency band 5G signal, the second transmitting module of the radio frequency transceiver transmits a 4G signal, if the second power of the 4G signal needs to be fed back, in order that the second power and the third power corresponding to the second frequency band 5G signal do not affect each other, the link switch is switched to the second contact of the first end of the link switch by controlling the switch to be closed, the second contact of the first end of the switch of the first coupler is disconnected from the second end of the switch of the first coupler, and the first end of the switch of the second coupler is conducted with the second end of the switch of the second coupler, so that the requirement of isolation between the second power and the first power or the third power can be achieved through two switches.
Following the above-described embodiment of the present application, the circuit further includes:
and switching the link changeover switch to a first contact of a first end of the link changeover switch, conducting a second contact of a first end of a switch of the first coupler with a second end of the switch of the first coupler, and disconnecting the first end of the switch of the second coupler with the second end of the switch of the second coupler so that the third power reaches a transmitting feedback receiving module of the radio frequency transceiver through the third feedback link.
For example, in a preferred embodiment of the present application, the first transmitting module of the radio frequency transceiver transmits a second band 5G signal of the band supported by the 5G power amplifier module, the second transmitting module of the radio frequency transceiver transmits a 4G signal, if the third power of the second band 5G signal needs to be fed back, in order that the third power and the second power of the 4G signal transmitted by the second transmitting module of the radio frequency transceiver do not affect each other, the link switch is switched to a first contact of a first end of the link switch by controlling the switch to be closed, a second contact of a first end of the switch of the first coupler is conducted to a second end of the switch of the first coupler, and the first end of the switch of the second coupler is disconnected from the second end of the switch of the second coupler, so that the isolation requirement between the third power and the second power can be achieved by two switches.
Following the above-described embodiment of the present application, the circuit further includes:
the first power amplifier module can conduct power of different frequency bands by configuring a driving code in a register of a switch of the first coupler.
Here, the same power amplifier or the same power amplifier module may be shared between the two links that can be multiplexed, that is, different signal frequency bands may share the same power amplifier or power amplifier module, and the signal frequency bands supported by the different power amplifiers or the different power amplifier modules are different, so that different signal frequency bands may share the same power amplifier or the same power amplifier module by modifying codes in registers of switches of the coupler.
For example, in a preferred embodiment of the present application, if the 5G power amplifier module only supports the n77/78/79 signal bands, if the driving code of the register configuration of the switch of the first coupler is 0x0 when the n77 signal band is in operation, the switch of the same first coupler is invoked when the n41 signal band is in operation, and at this time, the driving code is only required to be changed to 0x1 of the n41 signal band, and the corresponding driving codes of the different signal bands will be provided, so that the collision between the n77 signal band and the n41 signal band will not occur.
In practice, a power feedback circuit of the present application is embodied in the actual application of the ENDC combination b3a+n41a. As shown in fig. 3, where B3 is the 4G band and n41 is the 5G band, the following logic configuration is written into the drive code: b3 When FBRX is on and n41 FBRX is off, the switch SW0 register_0x0 is assigned 0x02, at the moment, RF2 is on, and the 5G power amplifier module Register register_0x5 is assigned 0x01, at the moment, CPL_IN is disconnected from CPL_OUT; b3 When FBRX is off and n41 FBRX is on, switch SW0 register_0x0 assigns 0x01, at this time RF1 is on, and 5G power amplifier module register_0x5 assigns 0x09, at this time cpl_in is on with cpl_out.
In summary, the first transmitting module of the radio frequency transceiver of the present application is respectively connected with the input end of the power amplifier and the input end of the first power amplifier module, and the output end of the power amplifier is connected with the input end of the corresponding coupler, and the first power amplifier module includes a first coupler and the corresponding switch thereof; the second transmitting module of the radio frequency transceiver is connected with the input end of the second power amplifier module, and the second power amplifier module comprises a second coupler and a corresponding switch; the transmitting feedback receiving module of the radio frequency transceiver is connected with the second end of a link change-over switch; the first contact of the first end of the link changeover switch is connected with the second end of the switch of the first coupler, and the output end of the coupler is connected with the first contact of the first end of the switch of the first coupler so as to form a first feedback link and feed back first power; a second contact of the first end of the link changeover switch is connected with a second end of the switch of the second coupler, and the second coupler is connected with the first end of the switch of the second coupler to form a second feedback link for feeding back second power; the first contact of the first end of the link change-over switch is connected with the second end of the switch of the first coupler, the first coupler is connected with the second contact of the first end of the switch of the first coupler to form a third feedback link, and the third power is fed back, so that the occupation of system resources is reduced, the area of a printed circuit board is saved, and the manufacturing cost of a product is reduced while the requirement that the isolation between feedback links reaches the design index is met.
It will be evident to those skilled in the art that the application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is evident that the word "comprising" does not exclude other elements or steps, and that the singular does not exclude a plurality. A plurality of units or means recited in the apparatus claims can also be implemented by means of one unit or means in software or hardware. The terms first, second, etc. are used to denote a name, but not any particular order.
Claims (4)
1. A power feedback circuit comprises a first power amplifier module, a second power amplifier module and a radio frequency transceiver, wherein,
the first transmitting module of the radio frequency transceiver is respectively connected with the input end of the power amplifier and the input end of the first power amplifier module, the output end of the power amplifier is connected with the input end of the corresponding coupler, and the first power amplifier module comprises a first coupler and a corresponding switch;
the second transmitting module of the radio frequency transceiver is connected with the input end of the second power amplifier module, and the second power amplifier module comprises a second coupler and a corresponding switch;
the transmitting feedback receiving module of the radio frequency transceiver is connected with the second end of a link change-over switch;
a first contact of a first end of the link changeover switch is connected with a second end of the switch of the first coupler, and the first contact of the first end of the switch of the first coupler is connected with an output end of the coupler to form a first feedback link for feeding back first power;
a second contact of the first end of the link changeover switch is connected with the second end of the switch of the second coupler, and the first end of the switch of the second coupler is connected with the second coupler to form a second feedback link for feeding back second power;
a first contact of a first end of the link changeover switch is connected with a second end of the switch of the first coupler, and a second contact of the first end of the switch of the first coupler is connected with the first coupler to form a third feedback link and feed back third power;
wherein the power feedback circuit further comprises: the first power amplifier module can conduct power of different frequency bands by configuring a driving code in a register of a switch of the first coupler.
2. The circuit of claim 1, wherein the circuit further comprises:
and switching the link changeover switch to a first contact of a first end of the link changeover switch, conducting the first contact of the first end of the switch of the first coupler with a second end of the switch of the first coupler, and disconnecting the first end of the switch of the second coupler with the second end of the switch of the second coupler so that the first power reaches a transmitting feedback receiving module of the radio frequency transceiver through the first feedback link.
3. The circuit of claim 1, wherein the circuit further comprises:
and switching the link changeover switch to a second contact of the first end of the link changeover switch, disconnecting the first end of the switch of the first coupler from the second end of the switch of the first coupler, and conducting the first end of the switch of the second coupler from the second end of the switch of the second coupler so that the second power reaches a transmitting feedback receiving module of the radio frequency transceiver through the second feedback link.
4. The circuit of claim 1, wherein the circuit further comprises:
and switching the link changeover switch to a first contact of a first end of the link changeover switch, conducting a second contact of a first end of a switch of the first coupler with a second end of the switch of the first coupler, and disconnecting the first end of the switch of the second coupler with the second end of the switch of the second coupler so that the third power reaches a transmitting feedback receiving module of the radio frequency transceiver through the third feedback link.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210138054.9A CN114567343B (en) | 2022-02-15 | 2022-02-15 | Circuit for power feedback |
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| CN202210138054.9A CN114567343B (en) | 2022-02-15 | 2022-02-15 | Circuit for power feedback |
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| CN114567343B true CN114567343B (en) | 2023-08-29 |
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| CN114745034B (en) * | 2022-06-13 | 2022-09-20 | 合肥龙旗智能科技有限公司 | Radio frequency module, signal receiving and transmitting method and wireless communication equipment |
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| CN113612550A (en) * | 2021-07-31 | 2021-11-05 | 荣耀终端有限公司 | Radio frequency channel detection method |
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| CN110336623A (en) * | 2019-07-22 | 2019-10-15 | 维沃移动通信有限公司 | Power detecting method, device and mobile terminal |
| CN213072652U (en) * | 2020-11-10 | 2021-04-27 | 维沃移动通信有限公司 | Radio frequency circuit and electronic equipment |
| CN112637889A (en) * | 2020-12-18 | 2021-04-09 | Oppo广东移动通信有限公司 | Control method and device, equipment and storage medium |
| CN113612550A (en) * | 2021-07-31 | 2021-11-05 | 荣耀终端有限公司 | Radio frequency channel detection method |
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