CN211830763U - Radio frequency front-end circuit and electronic equipment - Google Patents
Radio frequency front-end circuit and electronic equipment Download PDFInfo
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- CN211830763U CN211830763U CN202020929665.1U CN202020929665U CN211830763U CN 211830763 U CN211830763 U CN 211830763U CN 202020929665 U CN202020929665 U CN 202020929665U CN 211830763 U CN211830763 U CN 211830763U
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Abstract
The application provides a radio frequency front-end circuit and electronic equipment, the radio frequency front-end circuit includes: transceiver, a M duplexer and a N antenna, a M antenna that includes in a N antenna respectively with a M duplexer one-to-one electricity is connected, a M duplexer respectively with the transceiver electricity is connected, and M and N are positive integers, and M is less than or equal to N. Therefore, the radio frequency front-end circuit comprises M duplexers, and the size of each duplexer is smaller, so that the size of the whole radio frequency front-end circuit is reduced, and the cost can be reduced.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a radio frequency front end circuit and an electronic device.
Background
With the development of communication technology, electronic devices have moved into the age of 5th generation (5G), and when the radio frequency front end of the electronic devices generally adopts a non-independent Networking (NSA) mode. While the Radio frequency front end circuit that is not an independent network generally needs to support Long Term Evolution (LTE) and 5G New air interface (New Radio, NR) wireless dual connection, in an actual using process, the current Radio frequency front end circuit occupies a larger volume and has a higher cost.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a radio frequency front-end circuit and electronic equipment, and aims to solve the problems that the existing radio frequency front-end circuit is large in occupied size and high in cost.
In order to solve the technical problem, the present application is implemented as follows:
in a first aspect, an embodiment of the present application provides a radio frequency front-end circuit, including: transceiver, a M duplexer and a N antenna, a M antenna that includes in a N antenna respectively with a M duplexer one-to-one electricity is connected, a M duplexer respectively with the transceiver electricity is connected, M and N are equal positive integer, and M is less than or equal to N.
In a second aspect, an embodiment of the present application provides an electronic device, which includes the above radio frequency front-end circuit.
In an embodiment of the present application, an rf front-end circuit includes: transceiver, a M duplexer and a N antenna, a M antenna that includes in a N antenna respectively with a M duplexer one-to-one electricity is connected, a M duplexer respectively with the transceiver electricity is connected, M and N are equal positive integer, and M is less than or equal to N. Therefore, the radio frequency front-end circuit comprises M duplexers, and the size of each duplexer is smaller, so that the size of the whole radio frequency front-end circuit is reduced, and the cost can be reduced.
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 described 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 to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of an rf front-end circuit according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of another rf front-end circuit according to an embodiment of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an rf front-end circuit according to an embodiment of the present disclosure, and as shown in fig. 1, the rf front-end circuit includes: transceiver 10, a plurality of duplexer 20 of M and a plurality of antenna 30 of N, a plurality of antenna 30 of M that include in a plurality of antenna 30 respectively with a plurality of duplexer 20 one-to-one electricity is connected, a plurality of duplexer 20 of M respectively with transceiver 10 electricity is connected, and M and N are positive integer, and M is less than or equal to N.
Each of the M antennas 30 may be electrically connected to the transceiver 10 through one duplexer 20, and a circuit between each antenna 30 and the transceiver 10 may also be referred to as a path corresponding to each antenna 30, where the path may be used to transfer signals transmitted by the transceiver 10 or signals received by the antenna 30.
Two filters may be included in the duplexer 20, so that the loss of signals propagating on the path can be reduced compared to the way in which a plurality of multiplexers 40 are provided in the rf front-end circuit. Meanwhile, since the duplexer 20 is simpler than the multiplexer in manufacturing process, the manufacturing cost can be reduced.
In addition, since the number of ports of the multiplexer 40 is more, the isolation between the ports of the multiplexer 40 is poor, and the accommodation results in poor sensitivity under high power, whereas in the present embodiment, the number of ports of the duplexer 20 is less, so that the isolation and sensitivity between the ports are enhanced.
It should be noted that the rf front-end circuit in this embodiment may be disposed on a printed circuit board, and compared with the manner in which the rf front-end circuit includes a plurality of multiplexers 40, the rf front-end circuit in this embodiment has a smaller volume, and accordingly, the occupied volume on the printed circuit board may be reduced.
In addition, the rf front-end circuit provided in this embodiment may be applied to transmitting and receiving low-band signals, for example: the method can be applied to B20 and B28 in LTE and can also be applied to N28 in NR.
In an embodiment of the present application, an rf front-end circuit includes: transceiver 10, a plurality of duplexer 20 of M and a plurality of antenna 30 of N, a plurality of antenna 30 of M that include in a plurality of antenna 30 respectively with a plurality of duplexer 20 one-to-one electricity is connected, a plurality of duplexer 20 of M respectively with transceiver 10 electricity is connected, and M and N are positive integer, and M is less than or equal to N. Thus, the rf front-end circuit includes M duplexers 20, and the size of the duplexers 20 is small, so that the size of the whole rf front-end circuit is reduced, and the cost can be reduced.
Optionally, when M is smaller than N, L antennas 30 of the N antennas 30 except the M antennas 30 are respectively electrically connected to L multiplexers 40 in a one-to-one correspondence manner, and the L multiplexers 40 are respectively electrically connected to the transceiver 10.
The multiplexer 40 may include at least three filters, and the duplexer 20 may include two filters.
As an alternative embodiment, N is equal to the sum of M and L. Of course, as another alternative, N may be greater than the sum of M and L. Thus, the flexibility of the arrangement mode of the antenna is enhanced.
In the embodiment of the present application, since M antennas 30 of the N antennas 30 are electrically connected to the duplexer 20 correspondingly, and L antennas 30 of the N antennas 40 are electrically connected to the multiplexer 40 correspondingly, the diversity of the connection modes of the antennas 30 is increased, so that the connection modes of the antennas 30 are more flexible.
Optionally, referring to fig. 2, the N antennas 30 include a first antenna 31 and a second antenna 32, the L multiplexers 40 include a first multiplexer 41, and the M duplexers 20 include a first duplexer 21;
the first antenna 31 is electrically connected to the transceiver 10 through the first multiplexer 41, and the second antenna 32 is electrically connected to the transceiver 10 through the first multiplexer 21.
In the embodiment of the present application, since the rf front-end circuit includes the first antenna 31, the second antenna 32, the first multiplexer 41 and the first multiplexer 21, the size of the rf front-end circuit is further reduced.
Optionally, referring to fig. 2, at least a part of the control terminal of the first multiplexer 41 is electrically connected to the transceiver 10 through a first power amplifier 51, and at least a part of the control terminal of the first multiplexer 21 is electrically connected to the transceiver 10 through a second power amplifier 52.
In the embodiment of the present application, since the first power amplifier 51 is disposed between the first multiplexer 41 and the transceiver 10, and the second power amplifier 52 is disposed between the first multiplexer 21 and the transceiver 10, it is able to amplify the transmission signal and enhance the transmission effect of the signal.
Optionally, referring to fig. 2, the first antenna 31 is electrically connected to the first control terminal 411 of the first multiplexer 41, the second control terminal 412 of the first multiplexer 41 is electrically connected to the transceiver 10, and the third control terminal 413 and the fourth control terminal 414 of the first multiplexer 41 are electrically connected to the transceiver 10 through the first power amplifier 51, respectively;
the second antenna 32 is electrically connected to the first control terminal 211 of the first duplexer 21, the second control terminal 212 of the first duplexer 21 is electrically connected to the transceiver 10, and the third control terminal 213 of the first duplexer 21 is electrically connected to the transceiver 10 through the second power amplifier 52.
Wherein, the present embodiment may support two connection modes, namely LTE mode (for example, connection for LTE B20& LTE B28); and LTE and NR dual connectivity mode (e.g., for LTE B20& NR N28 connectivity), which may also be referred to as endec mode. The specific working principle can be seen in the following expression:
1. when the radio frequency front end circuitry is in LTE mode (for LTE B20& LTE B28 connections):
LTE transmit path (TX): the signal is transmitted from the transceiver 10, amplified by the first power amplifier 51, passed through the first multiplexer 41(B20 is inputted from the third control terminal 413 of the first multiplexer 41 and outputted from the first control terminal 411 of the first multiplexer 41; B28 is inputted from the fourth control terminal 414 of the first multiplexer 41 and outputted from the first control terminal 411 of the first multiplexer 41), and finally transmitted from the first antenna 31.
The LTE primary receiver Path (PRX) is a path in which a signal received by the first antenna 31 is input from the first control terminal 411 of the first multiplexer 41 through the first multiplexer 41(B20/B28, and output from the second control terminal 412 of the first multiplexer 41) and then enters the transceiver 10.
LTE Diversity Reception (DRX) path a signal is received by the second antenna 32, and then enters the transceiver 10 via the first duplexer 21(B20/B28 is input from the first control terminal 211 of the first duplexer 21 and output from the second control terminal 212 of the first duplexer 21).
2. When the radio frequency front end circuit is in a dual connection mode of LTE B20 and NR N28:
the LTE B20 transmit path (TX)/primary set receive Path (PRX) is consistent with LTE mode.
NR N28 transmit path (TX): the signal is transmitted by the transceiver 10, amplified by the second power amplifier 52, passed through the first duplexer 21 (input from the third control terminal 213 of the first duplexer 21, output from the first control terminal 211 of the first duplexer 21), and finally transmitted by the second antenna 32.
NR N28 primary receiver Path (PRX) signals are received by the second antenna 32, passed through the first duplexer 21 (input from the first control terminal 211 of the first duplexer 21, output from the second control terminal 212 of the first duplexer 21), and re-enter the transceiver 10.
NR N28 diversity reception path (DRX) a signal is received by the first antenna 31, passed through the first multiplexer 41 (input from the first control terminal 411 of the first multiplexer 41, output from the second control terminal 412 of the first multiplexer 41) and re-entered into the transceiver 10.
Therefore, the radio frequency front-end circuit provided by the embodiment of the application can better realize the transceiving of the signals of the LTE and NR low frequency bands, so that the transceiving of the signals is more convenient.
Optionally, referring to fig. 1, the N antennas 30 include a third antenna 33 and a fourth antenna 34, and the M duplexers 20 include a second duplexer 22 and a third duplexer 23;
the third antenna 33 is electrically connected to the transceiver 10 through the second duplexer 22, and the fourth antenna 34 is electrically connected to the transceiver 10 through the third duplexer 23.
In the embodiment of the present application, since the rf front-end circuit includes the third antenna 33, the fourth antenna 34, the second duplexer 22 and the third duplexer 23, the size of the rf front-end circuit is further reduced.
Optionally, referring to fig. 1, at least a portion of the control terminal of the second duplexer 22 is electrically connected to the transceiver 10 through a third power amplifier 53, and at least a portion of the control terminal of the third duplexer 23 is electrically connected to the transceiver 10 through a fourth power amplifier 54.
In the embodiment of the present application, since the third power amplifier 53 is disposed between the second multiplexer 22 and the transceiver 10, and the fourth power amplifier 54 is disposed between the fourth duplexer 24 and the transceiver 10, an amplification effect can be achieved on a transmission signal, so as to enhance a transmission effect of the signal.
Alternatively, referring to fig. 1, the third antenna 33 is electrically connected to the first control terminal 221 of the second duplexer 22, the second control terminal 222 of the second duplexer 22 is electrically connected to the transceiver 10, and the third control terminal 223 of the second duplexer 22 is electrically connected to the transceiver 10 through the third power amplifier 53;
the fourth antenna 34 is electrically connected to the first control terminal 231 of the third duplexer 23, the second control terminal 232 of the third duplexer 23 is electrically connected to the transceiver 10, and the third control terminal 233 of the third duplexer 23 passes through the fourth power amplifier 54 and is electrically connected to the transceiver 10.
Wherein, the present embodiment may also support two connection modes, namely LTE mode (for example, connection for LTE B20& ltlteb 28); and LTE and NR dual connectivity (e.g., connectivity for LTE B20& NR N28). The specific working principle can be seen in the following expression:
1. when the radio frequency front end circuitry is in LTE mode (for LTE B20& LTE B28 connections):
LTE B20 transmit path (TX): the signal is transmitted from the transceiver 10, amplified by the third power amplifier 53, passed through the second duplexer 22 (input from the third control terminal 223 of the second duplexer 22, output from the first control terminal 221 of the second duplexer 22), and finally transmitted from the third antenna 33.
LTE B20 primary set receive Path (PRX) signals are received by the third antenna 33, passed through the second duplexer 22 (input from the first control terminal 221 of the second duplexer 22, output from the second control terminal 222 of the second duplexer 22) and re-enter the transceiver 10.
LTE B20 Diversity Reception (DRX) path signals are received by the fourth antenna 34, passed through the third duplexer 23 (input from the first control terminal 231 of the third duplexer 23, output from the second control terminal 232 of the third duplexer 23), and re-enter the transceiver 10.
2. When the radio frequency front end circuitry is in LTE mode (for LTE B28 connection):
LTE B28 transmit path (TX): the signal is transmitted by the transceiver 10, amplified by the fourth power amplifier 54, transmitted by the third duplexer 23 (input from the third control terminal 233 of the third duplexer 23, output from the first control terminal 231 of the third duplexer 23), and finally transmitted by the fourth antenna 34.
LTE B28 primary receiver Path (PRX) signals are received by the fourth antenna 34, passed through the third duplexer 23 (input from the first control terminal 231 of the third duplexer 23, output from the second control terminal 232 of the third duplexer 23), and re-enter the transceiver 10.
LTE B28 diversity reception path (DRX) signals are received by the third antenna 33, passed through the second duplexer 22 (input from the first control terminal 221 of the second duplexer 22, output from the second control terminal 222 of the second duplexer 22) and re-enter the transceiver 10.
3. When the radio frequency front end circuit is in a dual connection mode of LTE B20 and NR N28:
the LTE B20 transmit path (TX)/primary set receive Path (PRX) is consistent with LTE mode.
NR N28 transmit path (TX): the signal is transmitted by the transceiver 10, amplified by the fourth power amplifier 54, transmitted by the third duplexer 23 (input from the third control terminal 233 of the third duplexer 23, output from the first control terminal 231 of the third duplexer 23), and finally transmitted by the fourth antenna 34.
NR N28 primary receiver Path (PRX) signals are received by the fourth antenna 34, passed through the third duplexer 23 (input from the first control terminal 231 of the third duplexer 23, output from the second control terminal 232 of the third duplexer 23), and re-enter the transceiver 10.
NR N28 diversity reception path (DRX) the signal is received by the third antenna 33, passed through the second duplexer 22 (input from the first control terminal 221 of the second duplexer 22, output from the second control terminal 222 of the second duplexer 22) and re-entered into the transceiver 10.
Therefore, the radio frequency front-end circuit provided by the embodiment of the application can better realize the transceiving of the signals of the LTE and NR low frequency bands, so that the transceiving of the signals is more convenient.
The embodiment of the present application further provides an electronic device, which includes the rf front-end circuit, and thus has the same advantageous technical effects as the above embodiment. The specific structure of the rf front-end circuit may refer to corresponding descriptions in the above embodiments, and details are not described herein.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A radio frequency front end circuit, comprising: transceiver, a M duplexer and a N antenna, a M antenna that includes in a N antenna respectively with a M duplexer one-to-one electricity is connected, a M duplexer respectively with the transceiver electricity is connected, and M and N are positive integers, and M is less than or equal to N.
2. The RF front-end circuit of claim 1, wherein L of the N antennas except the M antennas are electrically connected to L multiplexers respectively in a one-to-one correspondence when M is smaller than N, and the L multiplexers are electrically connected to the transceiver respectively.
3. The rf front-end circuit of claim 2, wherein the N antennas comprise a first antenna and a second antenna, the L multiplexers comprise first multiplexers, and the M duplexers comprise first duplexers;
the first antenna is electrically connected with the transceiver through the first multiplexer, and the second antenna is electrically connected with the transceiver through the first multiplexer.
4. The RF front-end circuit of claim 3, wherein at least a portion of the control terminal of the first multiplexer is electrically connected to the transceiver via a first power amplifier, and wherein at least a portion of the control terminal of the first multiplexer is electrically connected to the transceiver via a second power amplifier.
5. The RF front-end circuit of claim 4, wherein the first antenna is electrically connected to a first control terminal of the first multiplexer, a second control terminal of the first multiplexer is electrically connected to the transceiver, and a third control terminal and a fourth control terminal of the first multiplexer are electrically connected to the transceiver through the first power amplifier, respectively;
the second antenna is electrically connected with the first control end of the first duplexer, the second control end of the first duplexer is electrically connected with the transceiver, and the third control end of the first duplexer is electrically connected with the transceiver through the second power amplifier.
6. The radio frequency front-end circuit of claim 1, wherein the N antennas comprise a third antenna and a fourth antenna, and the M duplexers comprise a second duplexer and a third duplexer;
the third antenna is electrically connected with the transceiver through the second duplexer, and the fourth antenna is electrically connected with the transceiver through the third duplexer.
7. The radio frequency front-end circuit of claim 6, wherein at least a portion of the control terminal of the second duplexer is electrically connected to the transceiver via a third power amplifier, and wherein at least a portion of the control terminal of the third duplexer is electrically connected to the transceiver via a fourth power amplifier.
8. The rf front-end circuit of claim 7, wherein the third antenna is electrically connected to a first control terminal of the second duplexer, a second control terminal of the second duplexer is electrically connected to the transceiver, and a third control terminal of the second duplexer is electrically connected to the transceiver through the third power amplifier;
the fourth antenna with the first control terminal electric connection of third duplexer, the second control terminal of third duplexer with the transceiver electricity is connected, the third control terminal of third duplexer passes through fourth power amplifier with the transceiver electricity is connected.
9. An electronic device comprising the radio frequency front end circuit of any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020929665.1U CN211830763U (en) | 2020-05-28 | 2020-05-28 | Radio frequency front-end circuit and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020929665.1U CN211830763U (en) | 2020-05-28 | 2020-05-28 | Radio frequency front-end circuit and electronic equipment |
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| Publication Number | Publication Date |
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| CN211830763U true CN211830763U (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020929665.1U Active CN211830763U (en) | 2020-05-28 | 2020-05-28 | Radio frequency front-end circuit and electronic equipment |
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| CN (1) | CN211830763U (en) |
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