CN213072652U - Radio frequency circuit and electronic equipment - Google Patents
Radio frequency circuit and electronic equipment Download PDFInfo
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- CN213072652U CN213072652U CN202022590862.8U CN202022590862U CN213072652U CN 213072652 U CN213072652 U CN 213072652U CN 202022590862 U CN202022590862 U CN 202022590862U CN 213072652 U CN213072652 U CN 213072652U
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Abstract
The application discloses radio frequency circuit and electronic equipment, radio frequency circuit includes: the transceiver comprises a first transmitting end, a second transmitting end and a power feedback end, wherein the first transmitting end and the second transmitting end are different transmitting ends in a first network mode, the first transmitting end is connected to the first antenna unit, and the second transmitting end is connected to the second antenna unit; the first combiner comprises a first input end, a second input end and a first output end; the first transmitting terminal is connected to the first input terminal, the second transmitting terminal is connected to the second input terminal, and the first output terminal is connected to the power feedback terminal. According to the embodiment of the application, different transmitting ends of the same network mode on the transceiver are connected with the power feedback end of the transceiver through the combiner, and the transmission power is measured. Because the combiner belongs to a passive device, the cost is low, and software and a control circuit are not needed. The cost can be obviously reduced, the control lines are reduced, and the control logic is simplified.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a radio frequency circuit and an electronic device.
Background
In order to realize the dynamic control of the transmitting power, a power feedback circuit is usually arranged on a radio frequency transmitting path, and the implementation mode is that a part of power is extracted through a power coupler and is transmitted to a transceiver for measurement, and the power output by the transceiver is adjusted on the basis that the gain of an amplifier is not changed, so that the dynamic adjustment of the output power of the power amplifier is realized. Along with the increase of working frequency bands of different network modes, the response of a radio frequency transmitting channel is also increased, the power detection of a radio frequency circuit is time division detection, a switch is required to be added for channel switching, and meanwhile, a control logic circuit corresponding to the switch is also required to be added, so that the control logic is complex.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a radio frequency circuit and electronic equipment, and aims to solve the problem that a control logic of the radio frequency circuit is complex.
In a first aspect, an embodiment of the present application provides a radio frequency circuit, including:
the transceiver comprises a first transmitting end, a second transmitting end and a power feedback end, wherein the first transmitting end and the second transmitting end are different transmitting ends in a first network mode, the first transmitting end is connected to a first antenna unit, and the second transmitting end is connected to a second antenna unit;
the first combiner comprises a first input end, a second input end and a first output end; the first transmitting terminal is connected to the first input terminal, the second transmitting terminal is connected to the second input terminal, and the first output terminal is connected to the power feedback terminal.
In a second aspect, an embodiment of the present application further provides an electronic device, which includes the radio frequency circuit.
Therefore, according to the scheme of the application, different transmitting ends of the same network mode on the transceiver are connected with the power feedback end of the transceiver through the combiner, and the transmission power is measured. Because the combiner belongs to a passive device, the cost is low, and software and a control circuit are not needed. The cost can be obviously reduced, the control lines are reduced, and the control logic is simplified.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 shows one of the electrical schematic diagrams of the RF circuit of the embodiment of the present application;
fig. 2 shows a second circuit schematic of the rf circuit according to the embodiment of the present application.
Description of reference numerals: 1. the antenna comprises a transceiver, 2, a first combiner, 11, a first coupler, 12, a second coupler, 3, a second combiner, 13, a third coupler, 14 and a fourth coupler.
Detailed Description
Exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The power Feedback circuit (FBRX) can dynamically control the transmission power, extract part of the power of the transmitting end, transmit the extracted part of the power to the transceiver for measurement, and adjust the power output by the transceiver on the basis of unchanged gain of the amplifier on the radio frequency transmitting path, thereby dynamically adjusting the output power of the amplifier.
The measurement ports of the power feedback circuit FBRX, that is, only one power feedback port, need to be switched as the rf transmission path increases, and when the transmission power is measured, a separate control logic circuit needs to be added if the switch is used to complete the path switching, which leads to a complicated control process of the rf circuit. In an embodiment of the present application, as shown in fig. 1, an embodiment of the present application provides a radio frequency circuit, including:
the transceiver 1 comprises a first transmitting end, a second transmitting end and a power feedback end, wherein the first transmitting end and the second transmitting end are different transmitting ends in a first network mode, the first transmitting end is connected to a first antenna unit T1, and the second transmitting end is connected to a second antenna unit T2;
a first combiner 2 including a first input terminal, a second input terminal, and a first output terminal; the first transmitting terminal is connected to the first input terminal, the second transmitting terminal is connected to the second input terminal, and the first output terminal is connected to the power feedback terminal.
The first network mode may be a Long Term Evolution (LTE) network or a New Radio, NR (New Radio, NR) network, and the first transmitting terminal Tx0 and the second transmitting terminal Tx1 are transmitting ports of the first network mode, for example, LTE transmitting ports. The working frequency bands of the first transmitting end and the second transmitting end are different. The power feedback terminal is an FBRX power measurement port, i.e., the FBRX port in fig. 1. The first transmitting terminal Tx0 is connected to the first antenna unit T1, and the second transmitting terminal Tx1 is connected to the second antenna unit T2, so as to transmit radio frequency signals.
The first combiner comprises a first input end and a second input end which are respectively connected with the first transmitting end and the second transmitting end, and a first output end of the first combiner is connected with the FBRX port. Since the first transmitting end and the second transmitting end are different ports of the same network mode and have different working frequency bands, the first transmitting end and the second transmitting end respectively work at different moments, only one transmitting port has signal output at the same moment, and the transmitting power of the two transmitting ports can be respectively measured through the first combiner 2.
The first combiner 2 may extract the transmission power of the first transmission terminal or the second transmission terminal, and the transmission power is input to the FBRX port of the transceiver 1 by the first combiner 2 for measurement, so as to implement measurement of the transmission power by the transceiver 1. The combiner belongs to a passive device, and the cost is lower compared with that of a switch (the switch belongs to an active device), and the cost of the general combiner is only about 50% of that of a Single Pole Double Throw (SPDT) switch.
According to the embodiment of the application, different transmitting ends of the same network mode on the transceiver are connected with the power feedback end of the transceiver through the combiner, and the transmission power is measured. Because the combiner belongs to a passive device, the cost is low, and software and a control circuit are not needed. The cost can be obviously reduced, and the control lines can be reduced.
Specifically, as shown in fig. 2, the first transmitting terminal is connected to the first antenna unit T1 through a first power amplifier PA 1; a first coupler 11 is connected between the first power amplifier PA1 and the first antenna unit T1, and the first transmitting terminal is connected to the first input terminal through the first power amplifier PA1 and the first coupler 11.
The second transmitting terminal is connected to the second antenna unit T2 through a second power amplifier PA 2; a second coupler 12 is connected between the second power amplifier PA2 and the second antenna unit T2, and the second transmitting terminal is connected to the second input terminal through the second power amplifier PA2 and the second coupler 12.
Taking the first network mode as an LTE network as an example, the PAs 1 and the PAs 2 are LTE transmission amplifiers, and operate in different frequency bands, so that the transmission devices operate in different transmission scenarios, at the same time, only one FBRX has signal output, part of the transmission power of the first transmission end can be extracted through the first coupler 11, and is transmitted to the transceiver 1 by the first combiner 2 for measurement, part of the transmission power of the second transmission end can be extracted through the second coupler 12, and is transmitted to the transceiver 1 by the first combiner 2 for measurement, and when the gain of the PA1 or the PA2 is not changed, the power output by the transceiver 1 is adjusted, so that the dynamic adjustment of the output power of the PA1 or the PA2 is realized.
Optionally, as shown in fig. 2, the transceiver 1 further includes: a third transmitting end and a fourth transmitting end, the third transmitting end and the fourth transmitting end being different transmitting ends of the second network mode, the third transmitting end being connected to a third antenna unit T3, the fourth transmitting end being connected to a fourth antenna unit T4;
the radio frequency circuit further includes: a second combiner 3 including a third input terminal, a fourth input terminal, and a second output terminal; wherein the third transmitting terminal is connected to the third input terminal, the fourth transmitting terminal is connected to the fourth input terminal, and the second output terminal is connected to the power feedback terminal.
The second network mode is a different network mode than the first network mode, for example: the first network mode is an LTE network, and the second network mode is an NR network. The third transmitting end Tx2 and the fourth transmitting end Tx3 are different transmitting ends of a unified network mode, and the operating frequency bands of the third transmitting end and the fourth transmitting end are different, for example: the third transmitting end and the fourth transmitting end are transmitting ends of different frequency bands of an NR network. The third transmitting terminal Tx2 is connected to the third antenna unit T3, and the fourth transmitting terminal Tx3 is connected to the fourth antenna unit T4, so as to implement transmission of radio frequency signals.
Specifically, the third transmitting terminal is connected to the third antenna element through a third power amplifier PA 3; a third coupler 13 is connected between the third power amplifier PA3 and the third antenna unit, and the third transmitting terminal is connected to the third input terminal through the third power amplifier PA3 and the third coupler 13.
The fourth transmitting terminal is connected to the fourth antenna element through a fourth power amplifier PA 4; a fourth coupler 14 is connected between the fourth power amplifier PA4 and the fourth antenna unit, and the fourth transmitting terminal is connected to the fourth input terminal through the fourth power amplifier and the fourth coupler.
Taking the second network mode as an NR network as an example, the PA3 and the PA4 are NR transmission amplifiers, and operate in different frequency bands, so that the operation is performed in different transmission scenarios, at the same time, only one FBRX has signal output, part of the transmission power of the third transmission end can be extracted by the third coupler 13, and is transmitted to the transceiver 1 by the second combiner 3 for measurement, part of the transmission power of the fourth transmission end can be extracted by the fourth coupler 14, and is transmitted to the transceiver 1 by the second combiner 3 for measurement, and when the gain of the PA3 or the PA4 is not changed, the power output by the transceiver 1 is adjusted, so that the dynamic adjustment of the output power of the PA3 or the PA4 is realized.
The radio frequency circuit further includes: a first switch K1; the first terminal of the first switch K1 is connected to the power feedback terminal, the first contact of the second terminal of the first switch is connected to the first output terminal, and the second contact of the second terminal of the first switch K1 is connected to the second output terminal. The first switch K1 may be a single-pole double-throw switch, a first contact of the single-pole double-throw switch is connected to the output terminal of the first combiner 2, and a second contact of the single-pole double-throw switch is connected to the output terminal of the second combiner 3.
The transceiver further comprises: a control end; the control terminal is connected with the first switch K1. The control end is used for controlling the connection and disconnection between the first switch K1 and the first combiner or the second combiner. For example: when the transmission power of the first transmission end or the second transmission end needs to be measured, the control end controls the first contact of the first switch K1 to be communicated, so that the first transmission end or the second transmission end, the first combiner 2, the first switch K1 and the power feedback end form a path, thereby measuring the transmission power of the first transmission end or the second transmission end; when the transmission power of the third transmitting terminal or the fourth transmitting terminal needs to be measured, the control terminal controls the second contact of the first switch K1 to be communicated, so that a path is formed among the third transmitting terminal or the fourth transmitting terminal, the second combiner 3, the first switch K1 and the power feedback terminal, and the transmission power of the third transmitting terminal or the fourth transmitting terminal is measured.
Taking the first network mode as an LTE network and the second network mode as an NR network as an example, only in a scenario of Non-independent Networking (NSA) LTE and NR Dual connectivity (EN _ DC), when PA1 and PA3, PA1 and PA4, PA2 and PA3, and PA2 and PA4 transmit simultaneously, the first switch switches, and LTE and NR power interval detection is implemented.
According to the embodiment of the application, different transmitting ends of the same network mode on the transceiver are connected with the power feedback end of the transceiver through the combiner, and the transmission power is measured. Because the combiner belongs to a passive device, the cost is low, and software and a control circuit are not needed. The cost can be obviously reduced, the control lines are reduced, and the control logic is simplified.
The following describes an electronic device provided in the present application in detail by using specific embodiments, where the electronic device may be a mobile phone, and it can be understood by those skilled in the art that the electronic device may be applied to other electronic devices with a display screen besides a mobile phone as an electronic device, such as a tablet computer, an e-book reader, an MP3 (Moving Picture Experts Group Audio Layer III) player, an MP4 (Moving Picture Experts Group Audio Layer IV) player, a laptop portable computer, a car-mounted computer, a desktop computer, a set-top box, an intelligent television, a wearable device, and so on.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
While preferred embodiments of the present application have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the true scope of the embodiments of the application.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
While the foregoing is directed to the preferred embodiment of the present application, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the principles of the disclosure and, therefore, the scope of the disclosure is to be defined by the appended claims.
Claims (9)
1. A radio frequency circuit, comprising:
the transceiver comprises a first transmitting end, a second transmitting end and a power feedback end, wherein the first transmitting end and the second transmitting end are different transmitting ends in a first network mode, the first transmitting end is connected to a first antenna unit, and the second transmitting end is connected to a second antenna unit;
the first combiner comprises a first input end, a second input end and a first output end; the first transmitting terminal is connected to the first input terminal, the second transmitting terminal is connected to the second input terminal, and the first output terminal is connected to the power feedback terminal.
2. The radio frequency circuit of claim 1,
the first transmitting end is connected to the first antenna unit through a first power amplifier;
a first coupler is connected between the first power amplifier and the first antenna unit, and the first transmitting terminal is connected to the first input terminal through the first power amplifier and the first coupler.
3. The radio frequency circuit of claim 1,
the second transmitting end is connected to the second antenna unit through a second power amplifier;
a second coupler is connected between the second power amplifier and the second antenna unit, and the second transmitting terminal is connected to the second input terminal through the second power amplifier and the second coupler.
4. The radio frequency circuit of claim 1, wherein the transceiver further comprises: the third transmitting end and the fourth transmitting end are different transmitting ends of a second network mode, the third transmitting end is connected to a third antenna unit, and the fourth transmitting end is connected to a fourth antenna unit;
the radio frequency circuit further includes: a second combiner including a third input, a fourth input, and a second output; wherein the third transmitting terminal is connected to the third input terminal, the fourth transmitting terminal is connected to the fourth input terminal, and the second output terminal is connected to the power feedback terminal.
5. The radio frequency circuit of claim 4, further comprising: a first switch;
the first end of the first switch is connected with the power feedback end, the first contact of the second end of the first switch is connected with the first output end, and the second contact of the second end of the first switch is connected with the second output end.
6. The radio frequency circuit of claim 5, wherein the transceiver further comprises: a control end;
the control end is connected with the first switch.
7. The RF circuit of claim 4, wherein the third transmitting terminal is connected to the third antenna unit through a third power amplifier;
a third coupler is connected between the third power amplifier and the third antenna unit, and the third transmitting end is connected to the third input end through the third power amplifier and the third coupler.
8. The radio frequency circuit of claim 4,
the fourth transmitting end is connected to the fourth antenna unit through a fourth power amplifier;
a fourth coupler is connected between the fourth power amplifier and the fourth antenna unit, and the fourth transmitting end is connected to the fourth input end through the fourth power amplifier and the fourth coupler.
9. An electronic device comprising a radio frequency circuit as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022590862.8U CN213072652U (en) | 2020-11-10 | 2020-11-10 | Radio frequency circuit and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022590862.8U CN213072652U (en) | 2020-11-10 | 2020-11-10 | Radio frequency circuit and electronic equipment |
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| Publication Number | Publication Date |
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| CN213072652U true CN213072652U (en) | 2021-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022590862.8U Active CN213072652U (en) | 2020-11-10 | 2020-11-10 | Radio frequency circuit and electronic equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114567343A (en) * | 2022-02-15 | 2022-05-31 | 上海龙旗科技股份有限公司 | Power feedback circuit |
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- 2020-11-10 CN CN202022590862.8U patent/CN213072652U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114567343A (en) * | 2022-02-15 | 2022-05-31 | 上海龙旗科技股份有限公司 | Power feedback circuit |
| CN114567343B (en) * | 2022-02-15 | 2023-08-29 | 上海龙旗科技股份有限公司 | Circuit for power feedback |
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