CN113055042A - Radio frequency circuit and electronic device - Google Patents
Radio frequency circuit and electronic device Download PDFInfo
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- CN113055042A CN113055042A CN202110253829.2A CN202110253829A CN113055042A CN 113055042 A CN113055042 A CN 113055042A CN 202110253829 A CN202110253829 A CN 202110253829A CN 113055042 A CN113055042 A CN 113055042A
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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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- 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
- H04B1/401—Circuits for selecting or indicating operating mode
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Abstract
The application discloses radio frequency circuit and electronic equipment, wherein radio frequency circuit includes: a radio frequency transceiver and antenna assembly; the first radio frequency module is used for receiving and transmitting radio frequency signals; the second radio frequency module is used for receiving the radio frequency signals, and the radio frequency transceiver and/or the first radio frequency module are/is connected with the antenna assembly through the second radio frequency module; wherein, the second radio frequency module includes: the filter is connected between the power amplifier and the first switching device, and the first switching device is used for controlling the antenna assembly to be conducted with the first radio frequency module and/or the second radio frequency module. According to the antenna assembly and the radio frequency module, the first switching device capable of controlling the antenna assembly to be conducted with the first radio frequency module and/or the second radio frequency module is arranged in the second radio frequency module, so that the occupied area of a radio frequency circuit on a circuit board is reduced, and the framework of the whole radio frequency circuit is simplified.
Description
Technical Field
The application relates to the technical field of communication, in particular to a radio frequency circuit and electronic equipment.
Background
With the development of the 5G technology, the radio frequency band is increased, the number of antennas is increased, the environment of the whole terminal is worsened, the design difficulty of the radio frequency antenna of the terminal is increased, the area of a cloth board is greatly improved compared with that of the traditional 4G technology, meanwhile, the whole terminal is increased in thickness due to the pursuit of a user on standby and display, a frame board and other designs are needed, and the reduction of user experience and the obvious increase of cost are brought. In the related art, a radio frequency antenna architecture is mainly constructed by adopting devices and switching devices supporting separate frequency bands, so that the radio frequency antenna architecture has excessive components and large space occupation.
Content of application
An object of the embodiments of the present application is to provide a radio frequency circuit and an electronic device, so as to make the architecture of a radio frequency antenna more simplified.
In order to solve the technical problem, the present application is implemented as follows:
an embodiment of a first aspect of the present application provides a radio frequency circuit, including: a radio frequency transceiver and antenna assembly; the first radio frequency module is connected with the radio frequency transceiver and used for transceiving radio frequency signals; the second radio frequency module is used for receiving the radio frequency signals, and the radio frequency transceiver and/or the first radio frequency module are/is connected with the antenna assembly through the second radio frequency module; wherein, the second radio frequency module includes: the filter is connected between the power amplifier and the first switching device, the power amplifier is connected with the radio frequency transceiver and/or the first radio frequency module, and the first switching device is used for controlling the antenna assembly to be conducted with the first radio frequency module and/or the second radio frequency module.
An embodiment of a second aspect of the present application provides an electronic device, including: the radio frequency circuit of any of the above aspects.
The radio frequency circuit in the embodiment of the application comprises a radio frequency transceiver, an antenna component, a first radio frequency module and a second radio frequency module. The radio frequency transceiver can receive and transmit radio frequency signals of different frequency bands through the antenna assembly. The first radio frequency module and the second radio frequency module are arranged between the radio frequency transceiver and the antenna assembly, signal transmission can be carried out between the radio frequency transceiver and the antenna assembly, the radio frequency transceiver receives and sends radio frequency signals through the first radio frequency module, and the radio frequency transceiver receives the radio frequency signals through the second radio frequency module.
The second radio frequency module comprises a power amplifier, a filter and a first switch device, wherein the filter is used for filtering radio frequency signals, and the filter is arranged in the second radio frequency module so that the second radio frequency module can be used for receiving the radio frequency signals in a specified frequency band. The power amplifier can perform power amplification on the radio-frequency signal filtered by the filter. The second radio frequency module is internally provided with a radio frequency signal amplifying circuit consisting of a filter and a power amplifier, so that the second radio frequency module can receive radio frequency signals in a specified frequency band. The first switch device is a change-over switch, the first switch device is connected between the antenna assembly and the first radio frequency module and the second radio frequency module, the antenna assembly can be controlled to be conducted with the first radio frequency module and/or the second radio frequency module by controlling the connection state among the contacts in the first switch device, namely, the received radio frequency signals at the antenna assembly can be distributed by controlling the connection state among the contacts in the first switch device. The radio frequency circuit supports a radio frequency Signal transmission technology (SRS), so that a mobile terminal provided with the radio frequency circuit can alternately transmit Sounding Reference signals among different antennas of an antenna assembly, a base station can acquire the channel quality of the different antennas of the mobile terminal, and the communication rate is optimized.
According to the antenna assembly and the radio frequency module, the first switching device capable of controlling the antenna assembly to be conducted with the first radio frequency module and/or the second radio frequency module is arranged in the second radio frequency module, so that the occupied area of a radio frequency circuit on a circuit board is reduced, and the framework of the whole radio frequency circuit is simplified.
When the switching device is provided as a separate electronic component on the circuit board, a large footprint is required. In the related art, in order to achieve the effect of radio frequency signal transmission and multi-antenna switching, a plurality of switching devices are separately arranged in a radio frequency circuit, which leads to a shortage of space on a circuit board. This application is through setting up first switching device in the second radio frequency module, when having reduced first switching device volume, has still reduced the module of configuration on the circuit board and electronic component's quantity, and then has reduced the space occupation volume of whole radio frequency circuit.
Drawings
Fig. 1 shows one of the schematic structural diagrams of a radio frequency circuit according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a second rf module according to an embodiment of the present disclosure;
FIG. 3 is a second schematic diagram of a second RF module according to an embodiment of the present disclosure;
fig. 4 is a third schematic structural diagram of a second rf module according to an embodiment of the present disclosure;
FIG. 5 is a second schematic diagram of an RF circuit according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a first rf module according to an embodiment of the present disclosure;
fig. 7 shows a third schematic diagram of the structure of the rf circuit according to the embodiment of the present application;
FIG. 8 shows a fourth schematic diagram of a radio frequency circuit in accordance with an embodiment of the present application;
FIG. 9 is a schematic circuit diagram of a limiter network in a first RF module according to an embodiment of the present application;
fig. 10 is a diagram illustrating a frequency characteristic curve after a limiter network is added to a first rf module according to an embodiment of the present disclosure;
FIG. 11 shows a fifth schematic diagram of a radio frequency circuit according to an embodiment of the present application;
fig. 12 shows a schematic structural diagram of an electronic device according to an embodiment of the present application.
The correspondence between reference numerals and part names in fig. 1 to 12 is:
100 rf circuit, 110 rf transceiver, 120 first rf module, 121 first transceiver circuit, 122 second transceiver circuit, 123 third transceiver circuit, 124 fourth transceiver circuit, 125 third switching device, 126 first receiving circuit, 127 second receiving circuit, 128 fourth switching device, 129 fifth switching device, 130 second rf module, 132 filter, 134 power amplifier, 136 first switching device, 140 antenna assembly, 142 first antenna, 144 second antenna, 146 third antenna, 148 fourth antenna, 150 second switching device, 200 electronic device.
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.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or described herein. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
The radio frequency circuit 100 and the electronic device 200 provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.
In one embodiment of the present application, as shown in fig. 1, there is provided a radio frequency circuit 100, including: a radio frequency transceiver 110, an antenna assembly 140, a first radio frequency module 120, and a second radio frequency module 130; the first rf module 120 is connected to the rf transceiver 110, and the first rf module 120 is used for transceiving rf signals; the second rf module 130 is used for receiving rf signals, and the rf transceiver 110 and/or the first rf module 120 are connected to the antenna assembly 140 through the second rf module 130;
as shown in fig. 2, the second rf module 130 includes: the power amplifier 134 is connected to the rf transceiver 110 and/or the first rf module 120, the filter 132 is connected to the first switching device 136, the power amplifier 134 is connected to the rf transceiver 110 and/or the first rf module 120, and the first switching device 136 is used to control the antenna assembly 140 to conduct with the first rf module 120 and/or the second rf module 130.
In the embodiment of the present application, the rf circuit 100 includes an rf transceiver 110, an antenna assembly 140, a first rf module 120, and a second rf module 130. The rf transceiver 110 can receive and transmit rf signals of different frequency bands through the antenna assembly 140. The first rf module 120 and the second rf module 130 are disposed between the rf transceiver 110 and the antenna assembly 140, and are capable of performing signal transmission between the rf transceiver 110 and the antenna assembly 140, wherein the rf transceiver 110 receives and transmits rf signals through the first rf module 120, and the rf transceiver 110 receives rf signals through the second rf module 130.
The second rf module 130 includes a power amplifier 134, a filter 132 and a first switch device 136, the filter 132 is used for filtering the rf signal, and the filter 132 is disposed in the second rf module 130, so that the second rf module 130 can be used for receiving the rf signal in the designated frequency band. The power amplifier 134 can power-amplify the rf signal filtered by the filter 132. The second rf module 130 is provided with an rf signal amplifying circuit composed of a filter 132 and a power amplifier 134, so that the second rf module 130 can receive rf signals in a specific frequency band. The first switch device 136 is a switch, the first switch device 136 is connected between the antenna assembly 140 and the first rf module 120 and the second rf module 130, and by controlling the connection state between the contacts in the first switch device 136, the antenna assembly 140 can be controlled to be conducted with the first rf module 120 and/or the second rf module 130, that is, by controlling the connection state between the contacts in the first switch device 136, the distribution of the received rf signal at the antenna assembly 140 can be realized. The radio frequency circuit 100 supports a radio frequency Signal transmission (SRS) technology, so that a mobile terminal provided with the radio frequency circuit 100 can alternately transmit Sounding Reference signals between different antennas of the antenna assembly 140, so that a base station obtains channel qualities of the different antennas of the mobile terminal, and communication rate is optimized.
The first switching device 136 capable of controlling the antenna assembly 140 to be conducted with the first rf module 120 and/or the second rf module 130 is disposed in the second rf module 130, so that the occupied area of the rf circuit 100 on the circuit board is reduced, and the structure of the whole rf circuit 100 is simplified.
It is understood that the switching device needs a large footprint when disposed as a separate electronic component on a circuit board. In the related art, in order to achieve the effects of radio frequency signal transmission and multi-antenna switching, a plurality of switching devices are separately provided in the radio frequency circuit 100, resulting in a tight space on the circuit board. By arranging the first switch device 136 in the second radio frequency module 130, the size of the first switch device 136 is reduced, and the number of modules and electronic elements configured on a circuit board is reduced, so that the space occupation of the whole radio frequency circuit 100 is reduced.
In any of the above embodiments, as shown in fig. 2, 3 and 4, the first switching device 136 includes a fixed contact, a first movable contact and a second movable contact, the power amplifier 134 is connected to the rf transceiver 110, the filter 132 is connected between the power amplifier 134 and the first movable contact, the second movable contact is connected to the second rf module 130, and the fixed contact is connected to the antenna assembly 140.
As shown in fig. 2, in some embodiments, the first switching device 136 is a double pole, triple throw switch.
As shown in fig. 3, in some embodiments, the first switching device 136 is a three-pole, four-throw switch.
As shown in fig. 4, in some embodiments, the first switching device 136 is a double pole double throw switch.
In this embodiment, the first switching device 136 includes a fixed contact, a first movable contact and a second movable contact, wherein the fixed contact is connected to the antenna in the antenna assembly 140, the first movable contact is connected to the filter 132 and the power amplifier 134, the second movable contact is connected to the second rf module 130, and the communication state between the antenna in the antenna assembly 140 and the first rf module 120 and/or the second rf module 130 is controlled by controlling the communication state between the fixed contact and the first movable contact or the second movable contact.
The radio frequency transceiver 110 includes a signal receiving end and a signal transmitting end.
When the control stationary contact is connected to the first movable contact, the rf signal in the antenna assembly 140 is transmitted to the signal receiving end of the rf transceiver 110 through the first switching device 136, the filter 132 and the power amplifier 134 in sequence.
When the control stationary contact is communicated with the second movable contact, the antenna assembly 140 is communicated with the signal receiving terminal and/or the signal transmitting terminal of the rf transceiver 110 through the first rf module 120. When the antenna element 140 receives a signal, the signal is transmitted to the signal receiving end of the rf transceiver 110 through the first switching device 136 and the first rf module 120 in sequence. When a signal is transmitted through the antenna element 140, the signal is transmitted to the antenna element 140 through the first rf module 120 and the first switching device 136 in sequence.
When the antenna assembly 140 includes multiple antennas, the first switching device 136 may be provided as a multi-pole, multi-throw switching device, and the first switching device 136 may connect the multiple filters 132. By arranging the second rf module 130 in the rf circuit 100, switching between different antennas in the antenna assembly 140 and signal distribution can be achieved by controlling the on/off state of the first switching device 136 and connecting the lines.
In some embodiments, as shown in fig. 3, the first switching device 136 is a three-pole, four-throw switch.
In these embodiments, the first switching device 136 includes three stationary contacts, three first movable contacts and one second movable contact, each stationary contact is connected to a different antenna in the antenna assembly 140, each corresponding first movable contact is connected to the filter 132 and the power amplifier 134, respectively, and one second movable contact is in communication with the first rf module 120. By controlling the communication state between the stationary contact and the first movable contact and/or the second movable contact in the three-pole four-throw switch, different antennas in the antenna assembly 140 are communicated with the first rf module 120 and/or the second rf module 130.
As shown in fig. 1, in any of the above embodiments, the antenna assembly 140 includes a first antenna 142, a second antenna 144, a third antenna 146, and a fourth antenna 148.
In this embodiment, the antenna assembly 140 includes four radio frequency antennas, a first antenna 142, a second antenna 144, a third antenna 146, and a fourth antenna 148. The four rf antennas are connected to the rf transceiver 110 through the first rf module 120 and the second rf module 130, and by controlling the communication state between the middle stationary contact of the first switch device 136 and the first movable contact and/or the second movable contact, the reception and transmission of the rf signals can be switched among the first antenna 142, the second antenna 144, the third antenna 146, and the fourth antenna 148, so that an antenna with better performance under the current operating condition is found, and the transceiving efficiency of the rf circuit 100 on the signals is improved.
In some embodiments, four antennas are used to receive the rf signal, and only the transmitting end of the rf signal is swapped.
In the embodiments, the radio frequency signals are received through four antennas, and the radio frequency antenna with the best performance among the four antennas is searched according to the received radio frequency signals, and the radio frequency antenna with the best performance is used as a signal sending antenna.
It can be understood that, by switching the connection state between the stationary contact in the first switching device 136 and the first movable contact and/or the second movable contact and adjusting the state of the switching device in the first rf module 120, different antennas can be connected to different signal receiving ends and signal sending ends of the rf transceiver 110, that is, by controlling the switches in the first switching device 136 and the first rf module 120, four antennas can be selected, so that the rf circuit 100 can adaptively adjust the signal transceiving state, and ensure the efficiency of signal transceiving.
As shown in fig. 1 and 4, in any of the above embodiments, the rf circuit 100 further includes: the second switch device 150, the first rf module 120, and the antenna assembly 140 and/or the second rf module 130 are connected through the second switch device 150.
In this embodiment, the radio frequency circuit 100 includes a separately provided second switching device 150, and the second switching device 150 is a changeover switch for distributing a signal. Specifically, by controlling the second switching device 150 and the first switching device 136, the connection state between each antenna in the antenna assembly 140 and the first rf module 120 and/or the second rf module 130 can be adjusted, and the selection of transmitting and receiving signals for different antennas in the rf circuit 100 is further achieved.
It is understood that the second switching device 150 is selected as a multi-pole multi-throw switch, the second switching device 150 includes a plurality of moving terminals and a plurality of stationary terminals, and the plurality of stationary terminals of the second switching device 150 are respectively connected to the antenna of the antenna assembly 140 and the first switching device 136 of the second rf module 130. By controlling the communication state between the different movable terminals and the fixed terminal in the second switch device 150 and performing the linkage control on the first switch device 136, different antennas can be connected to the rf transceiver 110 through the first rf module 120 or the second rf module 130.
As shown in fig. 1 and 4, in any of the above embodiments, the first rf module 120 includes: the first transceiver circuit 121 and the second transceiver circuit 122, the first transceiver circuit 121 and the second transceiver circuit 122 are both connected to the second switching device 150, and the second switching device 150 is used to control the conduction state of the second rf module 130 and/or the antenna module 140 and the first transceiver circuit 121 and the second transceiver circuit 122.
In this embodiment, the first rf module 120 includes a first transceiver circuit 121 and a second transceiver circuit 122, and the first transceiver circuit 121 and the second transceiver circuit 122 are connected to a signal transmitting end and a signal receiving end of the rf transceiver 110, so as to transmit the rf signal transmitted by the rf transceiver 110 to the antenna assembly 140 and transmit the rf signal received by the antenna assembly 140 to the rf transceiver 110.
The first transceiver circuit 121 and the second transceiver circuit 122 are both connected to the movable end of the second switch device 150, the stationary end of the second switch device 150 is connected to the antenna in the antenna assembly 140 and the second rf module 130, respectively, and the communication state between the second rf module 130 and/or the antenna assembly 140 and the first transceiver circuit 121 and the second transceiver circuit 122 can be controlled by adjusting the communication state between the movable end and the stationary end in the second switch device 150.
It is understood that the second switching device 150 is connected to the first switching device 136 in the second rf module 130, so that different antennas in the antenna assembly 140 can be selected when the rf transceiver 110 receives and transmits signals through the coordinated control of the first switching device 136 and the second switching device 150.
As shown in fig. 1, in any of the above embodiments, the second switching device 150 is a double-pole four-throw switch, the number of the second rf modules 130 is three, and the first switching device 136 includes two fixed contacts and two second movable contacts;
the first transceiver circuit 121 and the second transceiver circuit 122 are respectively connected to two moving ends of the second switching device 150;
one of the stationary terminals of the second switching device 150 is connected to the first antenna 142, the remaining three stationary terminals of the second switching device 150 are connected to the second movable contacts of the three first switching devices 136, respectively, and the stationary contacts of the three first switching devices 136 are connected to the second antenna 144, the third antenna 146, and the fourth antenna 148, respectively.
In this embodiment, the second switching device 150 is selected to be a double pole, four throw switch, i.e., the second switching device 150 has two moving terminals and four stationary terminals. Three second rf modules 130 are respectively connected to three fixed terminals of the second switch device 150, wherein each of the three second rf modules 130 includes a first switch device 136, and the first switch device 136 is a double-pole triple-throw switch including two fixed contacts, two second movable contacts, and a first movable contact.
As shown in fig. 4, the second rf module 130 with the first switching device 136 being a double pole double throw switch is shown.
The stationary contacts of the three first switching devices 136 are connected to a second antenna 144, a third antenna 146 and a fourth antenna 148, respectively. The first movable contact of the first switching device 136 is connected to a signal receiving terminal of the radio frequency transceiver 110 through the filter 132 and the signal amplifier. The three first switching devices 136 in the three second rf modules 130 are respectively connected to three different signal receiving terminals in the rf transceiver 110.
Two moving terminals of the second switch device 150 are respectively connected to the first transceiver circuit 121 and the second transceiver circuit 122 of the first rf module 120, and the first transceiver circuit 121 and the second transceiver circuit 122 are respectively connected to different signal transmitting terminals and different signal receiving terminals of the rf transceiver 110. Three fixed terminals of the second switch device 150 are respectively connected to the first switch devices 136 of the three second rf modules 130, and the remaining one fixed terminal is connected to the first antenna 142.
The fixed contact of the first switching device 136 in the second rf module 130 is controlled to communicate with the first movable contact, so that the antenna corresponding to the second rf module 130 can be connected to the signal receiving terminal corresponding to the rf transceiver 110 through the filter 132 and the power amplifier 134, and the rf transceiver 110 receives the rf signal received by the antenna through the second rf module 130. Controlling the stationary contact of the first switch device 136 in the second rf module 130 to communicate with the second movable contact, the corresponding antenna can be connected to the first rf module 120 through the second switch device 150, so that the rf transceiver 110 can transmit and receive signals through the first rf module 120. Through the circuit structure, the signal transmitting and receiving technology can be realized by controlling the first switching device 136 and the second switching device 150, and the switching of different antennas in the antenna assembly 140 can be realized.
It should be noted that the rf circuit 100 of the embodiment includes a first rf module 120, three second rf modules 130 and a second switch device 150. Compared with the prior art, the number and the volume of electronic components are reduced, so that the overall architecture of the radio frequency circuit 100 is simplified, and the space occupation of the radio frequency circuit 100 is reduced.
As shown in fig. 5, in any of the above embodiments, the second switching device 150 is a double-pole double-throw switch, the number of the second rf modules 130 is one, and the first switching device 136 includes three fixed contacts and one second movable contact;
the first transceiver circuit 121 and the second transceiver circuit 122 are respectively connected to two moving ends of the second switching device 150;
one fixed terminal of the second switching device 150 is connected to the first antenna 142, the other fixed terminal of the second switching device 150 is connected to the second movable contact of the first switching device 136, and three fixed contacts of the first switching device 136 are connected to the second antenna 144, the third antenna 146, and the fourth antenna 148, respectively.
In this embodiment, the second switching device 150 is selected to be a double pole double throw switch, i.e., the second switching device 150 has two moving terminals and two stationary terminals. A second rf module 130 is connected to the stationary terminal of the second switch device 150.
The filter 132 and the power amplifier 134 are connected to three first movable contacts of the first switching device 136, and the three first movable contacts of the first switching device 136 are connected to different signal receiving terminals of the radio frequency transceiver 110 through the filter 132 and the power amplifier 134. The second movable contact in the first switching device 136 is connected to the stationary terminal of the second switching device 150.
Two moving terminals of the second switch device 150 are respectively connected to the first transceiver circuit 121 and the second transceiver circuit 122 of the first rf module 120, and the first transceiver circuit 121 and the second transceiver circuit 122 are respectively connected to different signal transmitting terminals and different signal receiving terminals of the rf transceiver 110. One stationary terminal of the second switching device 150 is connected to the first antenna 142 and the other stationary terminal is connected to one second movable contact of the first switching device 136.
The fixed contact of the first switching device 136 in the second rf module 130 is controlled to communicate with the first movable contact, so that the antenna corresponding to the fixed contact can be connected to the signal receiving end corresponding to the rf transceiver 110 through the filter 132 and the power amplifier 134, and the rf transceiver 110 receives the rf signal received by the antenna through the second rf module 130. Controlling the stationary contact of the first switch device 136 in the second rf module 130 to communicate with the second movable contact, the corresponding antenna can be connected to the first rf module 120 through the second switch device 150, so that the rf transceiver 110 can transmit and receive signals through the first rf module 120. Through the circuit structure, the signal transmitting and receiving technology can be realized by controlling the first switching device 136 and the second switching device 150, and the switching of different antennas in the antenna assembly 140 can be realized.
As shown in fig. 6, in some embodiments, the first rf module 120 includes: a third transceiver circuit 123, a fourth transceiver circuit 124 and a third switching device 125, wherein the third transceiver circuit 123 and the fourth transceiver circuit 124 are connected to the antenna assembly 140 and/or the second rf module 130 through the third switching device 125; the first receiving circuit 126, the second receiving circuit 127 and the fourth switching element, the first receiving circuit 126 and the second receiving circuit 127 are connected to the antenna module 140 and/or the second rf module 130 through the fourth switching element; the fifth switching device 129, the third switching device 125, and the fourth switching device are connected to the antenna assembly 140 and/or the second rf module 130 through the fifth switching device 129.
In these embodiments, the first rf module 120 includes a third transceiving circuit 123, a fourth transceiving circuit 124, a first receiving circuit 126, a second receiving circuit 127, a third switching device 125, a fourth switching device 128, and a fifth switching device 129.
One end of the third transceiver circuit 123 and one end of the fourth transceiver circuit 124 are respectively connected to a signal receiving end and a signal transmitting end of the radio frequency transceiver 110, the other end of the third transceiver circuit 123 and the other end of the fourth transceiver circuit 124 are connected to the antenna assembly 140 and/or the second radio frequency module 130 through the third switching device 125, the third switching device 125 is a switch, and the connection state between the third transceiver circuit 123 and the fourth transceiver circuit 124 and the antenna assembly 140 and the second radio frequency module 130 can be controlled by controlling the third switching device 125.
One end of the first receiving circuit 126 and one end of the second receiving circuit 127 are respectively connected to a signal receiving end of the rf transceiver 110, the other end of the first receiving circuit 126 and the other end of the second receiving circuit 127 are connected to the antenna assembly 140 and/or the second rf module 130 through the fourth switching device 128, the fourth switching device 128 is a switch, and the connection state between the first receiving circuit 126 and the second receiving circuit 127 and between the antenna assembly 140 and the second rf module 130 can be controlled by controlling the fourth switching device 128.
The third switching device 125 for controlling the third transceiving circuit 123 and the fourth transceiving circuit 124 is connected to a fifth switching device 129, and the fifth switching device 129 is a change-over switch. By arranging the fifth switching device 129 between the third switching device 125 and the antenna module 140 and/or the second radio frequency module 130, the second-stage distribution of the transmitted or received radio frequency signals is realized, so that the communication state between each antenna in the antenna module 140 and the first radio frequency module 120 and/or the second radio frequency module 130 can be adjusted, and the selection of transmitting and receiving signals of different antennas in the radio frequency circuit 100 is further realized.
The third switching device 125, the fourth switching device 128 and the fifth switching device 129 for distributing the radio frequency signals are all arranged in the first radio frequency module 120, so that the integration level of elements in the first radio frequency module 120 is improved, the element volumes of the third switching device 125, the fourth switching device 128 and the fifth switching device 129 for distributing the signals are reduced, the number of modules and electronic elements configured on a circuit board is further reduced, and the space occupation amount of the whole radio frequency circuit 100 is further reduced.
As shown in fig. 6, in the above embodiment, the third switching device 125 is a double-pole triple-throw switch, the fifth switching device 129 is a single-pole triple-throw switch, two moving terminals of the third switching device 125 are respectively connected to the third transceiver circuit 123 and the fourth transceiver circuit 124, one moving terminal of the third switching device 125 is connected to the moving terminal of the fifth switching device 129, the other two moving terminals of the third switching device 125 are connected to the first antenna 142, and three moving terminals of the fifth switch are respectively connected to the second rf module 130 and the second antenna 144; the fourth switching device 128 is a double-pole double-throw switch, two movable ends of the fourth switching device 128 are respectively connected with the first receiving circuit 126 and the second receiving circuit 127, and one fixed end of the fourth switching device 128 is connected with the second antenna 144.
In this embodiment, the third switching device 125 is a double-pole triple-throw switch, the fifth switching device 129 is a single-pole triple-throw switch, the third switching device 125 is located between the third transceiver circuit 123 and the fourth transceiver circuit 124 and the fifth switching device 129, two moving ends of the third switching device 125 are respectively connected to the third transceiver circuit 123 and the fourth transceiver circuit 124, three fixed ends of the third switching device 125 are respectively connected to the moving end of the fifth switching device 129 and the first antenna 142, and three fixed ends of the fifth switching device 129 are respectively connected to the second antenna 144 and the second rf module 130. The on-off states between the third transceiver circuit 123 and the fourth transceiver circuit 124 and the first antenna 142, the second antenna 144 and the second rf module 130 can be controlled by controlling the fifth switching device 129 and the third switching device 125.
The fourth switching device 128 is a double-pole double-throw switch, two moving terminals of the fourth switching device 128 are respectively connected to the first receiving circuit 126 and the second receiving circuit 127, and two fixed terminals of the fourth switching device 128 are respectively connected to the second rf module 130 and the second antenna 144. The on-off state between the first receiving circuit 126 and the second receiving circuit 127 and between the second antenna 144 and the second rf module 130 can be controlled by controlling the fourth switching device 128.
By providing the third switching device 125 and the fifth switching device 129 connected to each other in the first rf module 120, the rf signal is distributed only twice during the process of transmitting and receiving the rf signal. The fourth switching device 128 is directly connected to the first switching device 136 in the second rf module 130, and the rf signal is only distributed twice during the receiving process. That is, it is ensured that the radio frequency circuit 100 does not cause excessive signal loss due to multiple distribution of the radio frequency signal in the process of transmitting and receiving the radio frequency signal.
As shown in fig. 7, in the above embodiment, the number of the second rf modules 130 is two, and the first switching device 136 includes two fixed contacts and two second movable contacts; the stationary contacts of the two first switching devices 136 are connected to the third antenna 146 and the fourth antenna 148, respectively, and the second movable contacts of the two first switching devices 136 are connected to the other stationary terminal of the fourth switch and the stationary terminal of the fifth switch, respectively.
In this embodiment, the first switch device 136 in the second rf module 130 is a double-pole-three-throw switch, the number of the fixed contacts of the first switch device 136 in the second rf module 130 is two, the number of the first movable contacts is one, and the number of the second movable contacts is two. The stationary contacts of the two first switching devices 136 are connected to a third antenna 146 and a fourth antenna 148, respectively. By connecting the stationary contact of the first switching device 136 with the first movable contact, the antenna corresponding to the second rf module 130 is connected to the signal receiving end of the rf transceiver 110 through the filter 132 and the power amplifier 134 of the second rf module 130. By connecting the fixed contact of the first switching device 136 with the second movable contact, the antenna corresponding to the second rf module 130 is connected to the signal receiving end of the rf transceiver 110 through the first rf module 120.
It is understood that the inclusion of one first rf module 120 and two second rf modules 130 in the rf circuit 100 enables signal distribution and antenna selection. The radio frequency circuit 100 does not need to be provided with a switch device for signal distribution, the number of modules and electronic elements configured on a circuit board is reduced, and the space occupation of the whole radio frequency circuit 100 is further reduced.
As shown in fig. 8, in the above embodiment, the number of the second rf modules 130 is one, and the first switching device 136 includes two fixed contacts and one second movable contact; the two stationary contacts of the first switching device 136 are connected to a third antenna 146 and a fourth antenna 148, respectively, and the second movable contact of the first switching device 136 is connected to the stationary terminal of the fifth switching device 129.
In this embodiment, the first switch device 136 in the second rf module 130 is a double-pole-three-throw switch, the number of the fixed contacts of the first switch device 136 in the second rf module 130 is one, the number of the first movable contacts is two, and the number of the second movable contacts is one. The two stationary contacts of the first switching device 136 are connected to a third antenna 146 and a fourth antenna 148, respectively. By connecting the stationary contact of the first switching device 136 with the first movable contact, the antenna corresponding to the stationary contact is connected to the signal receiving end of the rf transceiver 110 through the filter 132 and the power amplifier 134 of the second rf module 130. By connecting the fixed contact of the first switching device 136 with the second movable contact, the antenna corresponding to the second rf module 130 is connected to the signal receiving end of the rf transceiver 110 through the first rf module 120.
It is understood that the inclusion of a first rf module 120 and a second rf module 130 in the rf circuit 100 enables signal distribution and antenna selection. The radio frequency circuit 100 does not need to be provided with a switch device for signal distribution, the number of modules and electronic elements configured on a circuit board is reduced, and the space occupation of the whole radio frequency circuit 100 is further reduced.
As shown in fig. 9, in any of the above embodiments, the filter 132 can filter the radio frequency signals of different frequency bands.
In this embodiment, the filter 132 is a full band filter 132, and the filter 132 is capable of filtering at least two bands of radio frequency signals. The rf signal amplifying circuit composed of the filter 132 and the power amplifier 134 is capable of receiving rf signals of at least two frequency bands.
Compared with the related art in which separate filters 132 are provided for different frequency bands, the occupied space of at least one filter 132 and one signal amplifier is saved. In the embodiment of the present application, the filter 132 and the power amplifier 134 are also disposed in the same first rf module 120. It will be appreciated that the footprint of the electronic components arranged in the circuit in the form of a module is much smaller than the footprint of the electronic components arranged in the circuit alone. The first rf module 120 in this embodiment not only reduces the number of electronic components required to be configured, but also integrates the first switching device 136 in the first rf module 120, thereby further reducing the occupied space of the electronic components.
As shown in fig. 9, in some embodiments, a limiter network for the intermediate transition band, i.e., a limiter network for the N78/N79 intermediate transition band, is integrated into the filter 132.
Fig. 10 shows a frequency characteristic curve of the first rf module 120 after a limiter network is added. In these embodiments, the limiting network is integrated in the filter 132, which serves to suppress out-of-band interference, and no additional limiting network is required to be disposed in other circuits. Reducing design redundancy of other circuits.
In any of the above embodiments, the radio frequency signal comprises: n41 band signals, N77 band signals, N78 band signals, and N79 band signals.
The frequency bands of the 5G signal in the related art include an N41 frequency band, an N77 frequency band, an N78 frequency band, and an N79 frequency band.
In some embodiments, the filter 132 is configured as a filter 132 capable of filtering signals of the N78 band and the N79 band, and the second filter 132 is configured as a filter 132 capable of filtering signals of the N41 band.
It will be appreciated that the choice of filter 132 described above is not limiting.
In any of the above embodiments, the filter 132 is fabricated by a low temperature co-fired ceramic process.
In this embodiment, the filter 132 is prepared by using a low temperature co-fired ceramic process, and the filter 132 is a full-band filter 132 supporting N78 and N79.
As shown in fig. 11, in some embodiments, the rf circuit 100 includes two first rf modules 120, one of the two first rf modules 120 is connected to the first antenna 142 and the second antenna 144, and the other of the two first rf modules 120 is connected to the third antenna 146 and the fourth antenna 148.
The first rf module 120 includes: a third transceiver circuit 123, a fourth transceiver circuit 124, and a third switching device 125, the third transceiver circuit 123 and the fourth transceiver circuit 124 being connected to the antenna assembly 140 through the third switching device 125; the first receiving circuit 126, the second receiving circuit 127 and the fourth switching element, the first receiving circuit 126 and the second receiving circuit 127 are connected with the antenna component 140 through the fourth switching element; a fifth switching device 129, and the third switching device 125 passes through the fifth switching device 129 and the antenna assembly 140.
In these embodiments, the third switching device 125 of one of the rf modules is connected to the first antenna 142 and/or the second antenna 144 through the fifth switching device 129, and the fourth switching device 128 is connected to the second antenna 144. The third switching device 125 of the other rf module is connected to the third antenna 146 and/or the fourth antenna 148 through the fifth switching device 129, and the fourth switching device 128 is connected to the fourth antenna 148. The distribution of the radio frequency signals is realized by arranging the two first radio frequency modules 120 in the radio frequency circuit 100, so that the radio frequency circuit 100 can search an optimal signal channel by applying a signal transmission-by-signal technology, and can switch and transmit the radio frequency signals among different antennas by using a multi-antenna switching technology.
As shown in fig. 12, another embodiment of the present application provides an electronic device 200, including: as the radio frequency circuit 100 provided in the first aspect.
In the embodiment of the present application, the rf circuit 100 includes an rf transceiver 110, an antenna assembly 140, a first rf module 120, and a second rf module 130. The rf transceiver 110 can receive and transmit rf signals of different frequency bands through the antenna assembly 140. The first rf module 120 and the second rf module 130 are disposed between the rf transceiver 110 and the antenna assembly 140, and are capable of performing signal transmission between the rf transceiver 110 and the antenna assembly 140, wherein the rf transceiver 110 receives and transmits rf signals through the first rf module 120, and the rf transceiver 110 receives rf signals through the second rf module 130.
The second rf module 130 includes a power amplifier 134, a filter 132 and a first switch device 136, the filter 132 is used for filtering the rf signal, and the filter 132 is disposed in the second rf module 130, so that the second rf module 130 can be used for receiving the rf signal in the designated frequency band. The power amplifier 134 can power-amplify the rf signal filtered by the filter 132. The second rf module 130 is provided with an rf signal amplifying circuit composed of a filter 132 and a power amplifier 134, so that the second rf module 130 can receive rf signals in a specific frequency band. The first switch device 136 is a switch, the first switch device 136 is connected between the antenna assembly 140 and the first rf module 120 and the second rf module 130, and by controlling the connection state between the contacts in the first switch device 136, the antenna assembly 140 can be controlled to be conducted with the first rf module 120 and/or the second rf module 130, that is, by controlling the connection state between the contacts in the first switch device 136, the distribution of the received rf signal at the antenna assembly 140 can be realized. The radio frequency circuit 100 supports a radio frequency Signal transmission (SRS) technology, so that a mobile terminal provided with the radio frequency circuit 100 can alternately transmit Sounding Reference signals between different antennas of the antenna assembly 140, so that a base station obtains channel qualities of the different antennas of the mobile terminal, and communication rate is optimized.
The first switching device 136 capable of controlling the antenna assembly 140 to be conducted with the first rf module 120 and/or the second rf module 130 is disposed in the second rf module 130, so that the occupied area of the rf circuit 100 on the circuit board is reduced, and the structure of the whole rf circuit 100 is simplified.
When the switching device is provided as a separate electronic component on the circuit board, a large footprint is required. In the related art, in order to achieve the effects of radio frequency signal transmission and multi-antenna switching, a plurality of switching devices are separately provided in the radio frequency circuit 100, resulting in a tight space on the circuit board. By arranging the first switch device 136 in the second radio frequency module 130, the size of the first switch device 136 is reduced, and the number of modules and electronic elements configured on a circuit board is reduced, so that the space occupation of the whole radio frequency circuit 100 is reduced.
It should be noted that, in this document, the term "comprises/comprising" or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus 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 apparatus. The terms "communicate," "connect," and the like are to be construed broadly, e.g., "communication" may be through a direct connection or through other components. The terms "first," "second," and the like are used for distinguishing between different objects and not for describing a particular order of the objects. In the embodiments, words such as "for example" are used to mean serving as an example, certificate, or illustration. Any embodiment or design described herein as "for example" is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "such as" is intended to present relevant concepts in a concrete fashion. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
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 (14)
1. A radio frequency circuit, comprising:
a radio frequency transceiver and antenna assembly;
the first radio frequency module is connected with the radio frequency transceiver and used for transceiving radio frequency signals;
the second radio frequency module is used for receiving radio frequency signals, and the radio frequency transceiver and/or the first radio frequency module are/is connected with the antenna component through the second radio frequency module;
wherein the second radio frequency module comprises:
the filter is connected between the power amplifier and the first switching device, the power amplifier is connected with the radio frequency transceiver and/or the first radio frequency module, and the first switching device is used for controlling the antenna assembly to be conducted with the first radio frequency module and/or the second radio frequency module.
2. The radio frequency circuit of claim 1,
the first switch device comprises a fixed contact, a first movable contact and a second movable contact, the power amplifier is connected with the radio frequency transceiver, the filter is connected between the power amplifier and the first movable contact, the second movable contact is connected with the second radio frequency module, and the fixed contact is connected with the antenna assembly.
3. The radio frequency circuit of claim 2,
the antenna assembly includes a first antenna, a second antenna, a third antenna, and a fourth antenna.
4. The radio frequency circuit of claim 3, further comprising:
and the first radio frequency module is connected with the antenna component and/or the second radio frequency module through the second switching device.
5. The RF circuit of claim 4, wherein the first RF module comprises:
and the first transceiver circuit and the second transceiver circuit are both connected with the second switching device, and the second switching device is used for controlling the conduction states of the second radio frequency module and/or the antenna assembly and the first transceiver circuit and the second transceiver circuit.
6. The radio frequency circuit of claim 5,
the second switch device is a double-pole four-throw switch, the number of the second radio frequency modules is three, and the first switch device comprises two fixed contacts and two second movable contacts;
the first transceiver circuit and the second transceiver circuit are respectively connected with two movable ends of the second switch device;
one fixed end of the second switch device is connected with the first antenna, the other three fixed ends of the second switch device are respectively connected with the second movable contacts of the three first switch devices, and the fixed contacts of the three first switch devices are respectively connected with the second antenna, the third antenna and the fourth antenna.
7. The radio frequency circuit of claim 5,
the second switch device is a double-pole double-throw switch, the number of the second radio frequency modules is one, and the first switch device comprises three fixed contacts and one second movable contact;
the first transceiver circuit and the second transceiver circuit are respectively connected with two movable ends of the second switch device;
one fixed end of the second switch device is connected with the first antenna, the other fixed end of the second switch device is connected with the second movable contact of the first switch device, and the three fixed contacts of the first switch device are respectively connected with the second antenna, the third antenna and the fourth antenna.
8. The RF circuit of claim 3, wherein the first RF module comprises:
the third transceiver circuit and the fourth transceiver circuit are connected with the antenna component and/or the second radio frequency module through the third switching device;
the first receiving circuit and the second receiving circuit are connected with the antenna component and/or the second radio frequency module through the fourth switching element;
a fifth switching device, the third switching device and the fourth switching device being connected to the antenna assembly and/or the second radio frequency module through the fifth switching device.
9. The radio frequency circuit of claim 8,
the third switching device is a double-pole triple-throw switch, the fifth switching device is a single-pole triple-throw switch, two movable ends of the third switching device are respectively connected with the third transceiver circuit and the fourth transceiver circuit, one fixed end of the third switching device is connected with the movable end of the fifth switching device, the other two fixed ends of the third switching device are connected with the first antenna, and three fixed ends of the fifth switching device are respectively connected with the second radio frequency module and the second antenna;
the fourth switching device is a double-pole double-throw switch, two moving ends of the fourth switching device are respectively connected with the first receiving circuit and the second receiving circuit, and one fixed end of the fourth switching device is connected with the second antenna.
10. The radio frequency circuit of claim 9,
the number of the second radio frequency modules is two, and the first switching device comprises two fixed contacts and two second movable contacts;
the fixed contacts of the two first switching devices are respectively connected with the third antenna and the fourth antenna, and the second movable contacts of the two first switching devices are respectively connected with the other immobile end of the fourth switch and the immobile end of the fifth switch.
11. The radio frequency circuit of claim 9,
the number of the second radio frequency modules is one, and the first switching device comprises two fixed contacts and one second movable contact;
the two fixed contacts of the first switch device are respectively connected with the third antenna and the fourth antenna, and the second movable contact of the first switch device is connected with the fixed end of the fifth switch device.
12. The radio frequency circuit according to any one of claims 1 to 11,
the filter can filter radio frequency signals of different frequency bands.
13. The radio frequency circuit of claim 12, wherein the radio frequency signal comprises: n41 band signals, N77 band signals, N78 band signals, and N79 band signals.
14. An electronic device, comprising:
a radio frequency circuit as claimed in any one of claims 1 to 13.
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| CN202110253829.2A CN113055042A (en) | 2021-03-09 | 2021-03-09 | Radio frequency circuit and electronic device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110253829.2A CN113055042A (en) | 2021-03-09 | 2021-03-09 | Radio frequency circuit and electronic device |
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| CN113055042A true CN113055042A (en) | 2021-06-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113676214A (en) * | 2021-08-12 | 2021-11-19 | Oppo广东移动通信有限公司 | Amplifier module, radio frequency system and communication equipment |
| CN113676210A (en) * | 2021-08-12 | 2021-11-19 | Oppo广东移动通信有限公司 | Amplifier module, radio frequency system and communication equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201976093U (en) * | 2010-12-17 | 2011-09-14 | 中兴通讯股份有限公司 | Four-frequency range GSM (Global System for Mobile Communications) receiving and transmitting device and wireless terminal |
| CN109873664A (en) * | 2019-03-22 | 2019-06-11 | 维沃移动通信有限公司 | A kind of RF front-end circuit and mobile terminal |
| CN110890900A (en) * | 2019-11-29 | 2020-03-17 | 维沃移动通信有限公司 | Radio frequency circuit and electronic equipment |
| CN212324099U (en) * | 2020-07-01 | 2021-01-08 | 维沃移动通信有限公司 | Radio frequency circuit and electronic device |
-
2021
- 2021-03-09 CN CN202110253829.2A patent/CN113055042A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201976093U (en) * | 2010-12-17 | 2011-09-14 | 中兴通讯股份有限公司 | Four-frequency range GSM (Global System for Mobile Communications) receiving and transmitting device and wireless terminal |
| CN109873664A (en) * | 2019-03-22 | 2019-06-11 | 维沃移动通信有限公司 | A kind of RF front-end circuit and mobile terminal |
| WO2020192527A1 (en) * | 2019-03-22 | 2020-10-01 | 维沃移动通信有限公司 | Radio frequency front end circuit and mobile terminal |
| CN110890900A (en) * | 2019-11-29 | 2020-03-17 | 维沃移动通信有限公司 | Radio frequency circuit and electronic equipment |
| CN212324099U (en) * | 2020-07-01 | 2021-01-08 | 维沃移动通信有限公司 | Radio frequency circuit and electronic device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113676214A (en) * | 2021-08-12 | 2021-11-19 | Oppo广东移动通信有限公司 | Amplifier module, radio frequency system and communication equipment |
| CN113676210A (en) * | 2021-08-12 | 2021-11-19 | Oppo广东移动通信有限公司 | Amplifier module, radio frequency system and communication equipment |
| CN113676214B (en) * | 2021-08-12 | 2022-07-15 | Oppo广东移动通信有限公司 | Amplifier module, radio frequency system and communication equipment |
| CN113676210B (en) * | 2021-08-12 | 2022-07-15 | Oppo广东移动通信有限公司 | Amplifier module, radio frequency system and communication equipment |
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Application publication date: 20210629 |