CN110971246A - Radio frequency circuit, control method thereof and mobile terminal - Google Patents
Radio frequency circuit, control method thereof and mobile terminal Download PDFInfo
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- CN110971246A CN110971246A CN201911209193.0A CN201911209193A CN110971246A CN 110971246 A CN110971246 A CN 110971246A CN 201911209193 A CN201911209193 A CN 201911209193A CN 110971246 A CN110971246 A CN 110971246A
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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
- H04B1/005—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0053—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band
- H04B1/006—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band using switches for selecting the desired band
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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
- H04B1/005—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0064—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with separate antennas for the more than one band
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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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0404—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas the mobile station comprising multiple antennas, e.g. to provide uplink diversity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
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Abstract
The application discloses a radio frequency circuit, a control method thereof and a mobile terminal. The radio frequency circuit comprises a high-frequency signal channel, a WIFI signal channel, a switching module and a first antenna; the switching module is respectively connected with the high-frequency signal path and the WIFI signal path, and the first antenna is connected with the switching module; when the radio frequency circuit transmits a high-frequency signal, the switching module is switched to the high-frequency signal channel; when the radio frequency circuit transmits the WIFI signal, the switching module switches to the WIFI signal channel, so that the structural design of the radio frequency circuit can be optimized, and the antenna space is saved.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a radio frequency circuit, a control method thereof, and a mobile terminal.
Background
With the development of communication technology, the demand of users for carrier aggregation CA is increasing. At present, based on a radio frequency architecture of phase2, a 3T TXM chip capable of simultaneously transmitting a high frequency signal, an intermediate frequency signal and a low frequency signal is rarely applied because of its extremely high price, and a 2T TXM chip capable of simultaneously transmitting an intermediate frequency signal and a low frequency signal is generally adopted. However, when the 2T TXM chip is adopted, a separate antenna needs to be designed for a high-frequency band to transmit a high-frequency signal, and the design of the separate antenna increases the complexity of a radio frequency structure and increases the antenna space.
Disclosure of Invention
The embodiment of the application provides a radio frequency circuit, a control method thereof and a mobile terminal, which can optimize the structural design of the radio frequency circuit and save the antenna space.
The embodiment of the application provides a radio frequency circuit, which comprises a high-frequency signal channel, a WIFI signal channel, a switching module and a first antenna;
the switching module is respectively connected with the high-frequency signal path and the WIFI signal path, and the first antenna is connected with the switching module;
when the radio frequency circuit transmits a high-frequency signal, the switching module is switched to the high-frequency signal channel; when the radio frequency circuit transmits a WIFI signal, the switching module is switched to the WIFI signal channel.
In some embodiments of the present application, the high frequency signal path comprises a B30 frequency band signal path for transmitting signals in the B30 frequency band.
In some embodiments of the present application, the rf circuit further includes an rf transceiver chip, where the rf transceiver chip includes an rf transceiver terminal;
the high-frequency transceiving end is connected with the high-frequency signal path.
In some embodiments of the present application, the high frequency signal path includes a duplexer;
the duplexer is respectively connected with the high-frequency transceiving end and the switching module.
In some embodiments of the present application, the high-frequency signal path further includes a coupler, and the radio frequency transceiver chip further includes a power detection terminal;
the coupler is connected between the duplexer and the switching module, and the coupler is coupled with the power detection end.
In some embodiments of the present application, the switching module comprises a single pole double throw switch;
the moving end of the single-pole double-throw switch is connected with the first antenna, the first fixed end of the single-pole double-throw switch is connected with the WIFI signal path, and the second fixed end of the single-pole double-throw switch is connected with the coupler.
In some embodiments of the present application, the radio frequency circuit further includes a wireless signal transceiver chip, the wireless signal transceiver chip includes a WIFI signal terminal, and the WIFI signal path includes a filter;
the filter is respectively connected with the WIFI signal end and the switching module.
In some embodiments of the present application, the radio frequency circuit further comprises an intermediate frequency signal path, a low frequency signal path, a transmission module, and a second antenna;
the transmission module is respectively connected with the intermediate frequency signal path and the low frequency signal path, and the second antenna is connected with the transmission module.
Correspondingly, the embodiment of the application also provides a mobile terminal, which comprises the radio frequency circuit, and details are not repeated herein.
Correspondingly, the embodiment of the application also provides a control method of the radio frequency circuit, wherein the radio frequency circuit comprises a high-frequency signal channel, a WIFI signal channel, a switching module and a first antenna;
the method comprises the following steps:
acquiring the transmission state of the radio frequency circuit;
when the transmission state is a high-frequency signal transmission state, controlling the switching module to switch to the high-frequency signal passage, so that the switching module is communicated with the high-frequency signal passage and the first antenna;
and when the transmission state is a WIFI signal transmission state, controlling the switching module to switch to the WIFI signal channel, so that the switching module is communicated with the WIFI signal channel and the first antenna.
The radio frequency circuit, the control method of the radio frequency circuit and the mobile terminal can be provided with the switching module, so that the high-frequency signal channel and the WIFI signal channel are respectively connected with the switching module, the switching module shares the first antenna, when the radio frequency circuit transmits a high-frequency signal, the switching module is switched to the high-frequency signal channel, when the radio frequency circuit transmits the WIFI signal, the switching module is switched to the WIFI signal channel, an antenna does not need to be designed for the high-frequency signal independently, the structural design of the radio frequency circuit is greatly optimized, and the antenna space is saved.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a radio frequency circuit according to an embodiment of the present disclosure;
fig. 2 is another schematic structural diagram of a radio frequency circuit according to an embodiment of the present disclosure;
fig. 3 is a flowchart illustrating a control method of a radio frequency circuit according to an embodiment of the present disclosure.
Detailed Description
Specific structural and functional details disclosed herein are merely representative and are provided for purposes of describing example embodiments of the present application. This application may, however, be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.
In the description of the present application, it is to be understood that the terms "center," "lateral," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and therefore should not be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified. Furthermore, the term "comprises" and any variations thereof is intended to cover non-exclusive inclusions.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
The present application is further described below with reference to the accompanying drawings and examples.
As shown in fig. 1, fig. 1 is a schematic structural diagram of a radio frequency circuit provided in an embodiment of the present application, where the radio frequency circuit may include a high-frequency signal path 1, a WIFI signal path 2, a switching module 3, and a first antenna ANT 1; the switching module 3 is connected to the high-frequency signal path 1 and the WIFI signal path 2, respectively, and the first antenna ANT1 is connected to the switching module 3.
The high-frequency signal path 1 is used for transmitting high-frequency signals, the WIFI signal path 2 is used for transmitting WIFI signals, the switching module 3 is used for switching between the high-frequency signal path 1 and the WIFI signal path 2, and the first antenna ANT1 is used for transmitting high-frequency signals or WIFI signals.
Specifically, when the radio frequency circuit transmits a high frequency signal, the switching module 3 switches to the high frequency signal path 1, that is, when the radio frequency circuit transmits a high frequency signal, the high frequency signal path 1 needs to transmit the high frequency signal through the first antenna ANT1, and the switching module 3 switches to the high frequency signal path 1, so that the high frequency signal path 1 is conducted with the first antenna ANT 1; when the rf circuit receives a high frequency signal, the first antenna ANT1 needs to transmit the received high frequency signal to the high frequency signal path 1, and the switching module 3 switches to the high frequency signal path 1 to connect the high frequency signal path 1 and the first antenna ANT 1. When the radio frequency circuit transmits a WIFI signal, the switching module is switched to the WIFI signal path, that is, when the radio frequency circuit transmits the WIFI signal, the WIFI signal path 2 needs to transmit the WIFI signal through the first antenna ANT1, and the switching module 3 is switched to the WIFI signal path 2, so that the WIFI signal path 2 is conducted with the first antenna ANT 1; when the radio frequency circuit receives a WIFI signal, the first antenna ANT1 needs to transmit the received WIFI signal to the WIFI signal path 1, and the switching module 3 switches to the WIFI signal path 2 to turn on the WIFI signal path 2.
The high-frequency signal path 1 includes a B30 frequency band signal path for transmitting signals of a B30 frequency band. Because the B30 frequency band is 2300-2360MHz, the WIFI frequency band is 2400-2483.5MHz, that is, the B30 frequency band is very close to the WIFI frequency band, the high-frequency antenna and the WIFI antenna are multiplexed to form the first antenna ANT1, so that the first antenna ANT1 can transmit a high-frequency signal or a WIFI signal.
The radio frequency circuit in the embodiment of the invention can be applied to a mobile terminal, and the mobile terminal can comprise a mobile phone, a tablet computer and the like. Because the high-frequency signal and the WIFI signal in the mobile terminal can not be transmitted simultaneously, the switching module 3 can realize the back-and-forth switching of the high-frequency signal channel 1 and the WIFI signal channel 2, and the performance of the mobile terminal can not be influenced while the multiplexing of the high-frequency antenna and the WIFI antenna of the mobile terminal is realized.
Further, as shown in fig. 2, the rf circuit further includes a rf Transceiver chip Transceiver, where the rf Transceiver chip Transceiver includes a high frequency Transceiver PRX 1; the high frequency transceiving terminal PRX1 is connected to the high frequency signal path 1.
When the radio frequency circuit transmits a high frequency signal, the radio frequency Transceiver chip Transceiver can internally recognize the high frequency signal and transmit the high frequency signal to the high frequency signal path 1 through the high frequency Transceiver PRX 1.
Further, as shown in fig. 2, the high-frequency signal path 1 includes a duplexer Diplexer 1; the duplexer Diplexer1 is respectively connected to the high-frequency transceiving end PRX1 and the switching module.
The duplexer Diplexer1 isolates the transmission and reception of high-frequency signals, and ensures the transmission and reception of high-frequency signals to work normally at the same time.
Further, the high-frequency signal path 1 further includes a Coupler, and the radio frequency Transceiver chip transmitter further includes a power detection end PDET; the Coupler is connected between the duplexer Diplexer1 and the switching module, and the Coupler is coupled with the power detection end PDET.
When the radio frequency circuit transmits a high-frequency signal, the high-frequency signal is transmitted to the duplexer dipoxer 1 through the high-frequency Transceiver end PRX1 of the radio frequency Transceiver chip transporter, the Coupler obtains the power of the high-frequency signal transmitted in the duplexer dipoxer 1, and couples the power of the high-frequency signal to the radio frequency Transceiver chip transporter through the power detection end PDET, so that the detection of the high-frequency signal power transmitted in the duplexer dipoxer 1 by the radio frequency Transceiver chip transporter is realized, and meanwhile, the radio frequency Transceiver chip transporter adjusts the power of the high-frequency signal transmitted to the duplexer dipoxer 1 according to the detected power, so that the adjusted power of the high-frequency signal meets the actual requirement.
Further, the radio frequency circuit further comprises a wireless signal transceiver chip WCN, and the wireless signal transceiver chip comprises a WIFI signal end W; and the WIFI signal end W is connected with the WIFI signal channel 2.
Wherein, wireless signal transceiver chip WCN is four unification chips, the chip of integrated WIFI, bluetooth, GPS and FM promptly. Accordingly, the wireless signal transceiver chip WCN may include four ports, i.e., a WIFI signal terminal W, a bluetooth signal terminal (not shown in the figure), a GPS signal terminal (not shown in the figure), and an FM signal terminal (not shown in the figure). The WIFI signal end W is used for transmitting WIFI signals, the Bluetooth signal end is used for transmitting Bluetooth signals, the GPS signal end is used for transmitting GPS signals, and the FM signal end is used for transmitting FM signals.
Further, the WIFI signal path includes a filter F; the filter F is connected with the WIFI signal end W and the switching module respectively.
The filter F is used for filtering noise of the WIFI signal transmitted in the WIFI signal path.
Further, the switching module comprises a single-pole double-throw switch SPDT _ 1; the moving end of the SPDT _1 is connected to the first antenna ANT1, the first fixed end of the SPDT _1 is connected to the WIFI signal path 2, and the second fixed end of the SPDT _1 is connected to the Coupler.
Specifically, when the WIFI signal path 2 includes the filter F, the first fixed terminal of the single-pole double-throw switch SPDT _1 is connected to the filter F.
When the radio frequency circuit transmits a high frequency signal, the active end of the single-pole double-throw switch SPDT _1 is communicated with the second inactive end, so that the radio frequency Transceiver chip Transceiver, the duplexer Diplexer1 and the first antenna ANT1 are conducted, so that the radio frequency Transceiver chip Transceiver can transmit the high frequency signal through the duplexer Diplexer1 and the first antenna ANT1, and the high frequency signal can be transmitted to the radio frequency Transceiver chip Transceiver through the first antenna ANT1 and the duplexer Diplexer 1.
When the radio frequency circuit transmits a WIFI signal, the moving end of the single-pole double-throw switch SPDT _1 is communicated with the first stationary end, so that the wireless signal transceiver chip WCN and the filter F are conducted with the first antenna ANT1, the wireless signal transceiver chip WCN can transmit the WIFI signal through the filter F and the first antenna ANT1, and meanwhile, the WIFI signal can be transmitted to the wireless signal transceiver chip WCN through the first antenna ANT1 and the filter F.
Further, the radio frequency circuit further comprises a Power Amplifier (PA); the power amplifier PA is connected to the duplexer Diplexer 1.
When the duplexer Diplexer1 transmits a high-frequency signal, the power amplifier PA performs power amplification processing on the high-frequency signal transmitted through the duplexer Diplexer 1.
In addition, the radio frequency circuit can also transmit low-frequency signals and medium-frequency signals. As shown in fig. 2, the rf circuit further includes an intermediate frequency signal path 4, a low frequency signal path (not shown), a transmission module TXM, and a second antenna ANT 2; the transmission module TXM is connected to the intermediate frequency signal path 4 and the low frequency signal path, respectively, and the second antenna ANT2 is connected to the transmission module TXM.
The low-frequency signal path is used for transmitting low-frequency signals, the intermediate-frequency signal path is used for transmitting intermediate-frequency signals, the transmission module TXM is used for ensuring simultaneous transmission of the low-frequency signals and the intermediate-frequency signals, and the second antenna ANT2 is used for transmitting the low-frequency signals and the intermediate-frequency signals.
Specifically, the intermediate frequency signal path includes a B2 frequency band signal path for transmitting signals in the B2 frequency band.
According to the embodiment of the invention, the high-frequency signal antenna and the WIFI signal antenna are multiplexed, so that the transmission module only needs to adopt the 2T TXM chip for simultaneously transmitting the low-frequency signal and the medium-frequency signal, the structural design of the radio frequency circuit is optimized on the basis of ensuring the cost of the radio frequency circuit, and the antenna space is reduced.
Further, the intermediate frequency signal path includes a duplexer Diplexer2, and the rf Transceiver chip transmitter further includes an intermediate frequency Transceiver PRX2 and a low frequency Transceiver (not shown in the figure). The transmission module TXM includes an intermediate frequency signal terminal MB and a low frequency signal terminal LB.
One end of the duplexer Diplexer2 is connected with an intermediate frequency transceiving end PRX2 of a Transceiver chip Transceiver, and the other end of the duplexer Diplexer2 is connected with an intermediate frequency signal end MB of a transmission module TXM; one end of the low-frequency signal path is connected with a low-frequency transceiving end of the Transceiver chip, and the other end of the low-frequency signal path is connected with a low-frequency signal end LB of the transmission module TXM.
When the radio frequency circuit transmits an intermediate frequency signal, the radio frequency Transceiver chip transmitter transmits the intermediate frequency signal to the duplexer Diplexer2 through the intermediate frequency Transceiver end PRX2, the duplexer Diplexer2 transmits the intermediate frequency signal to the second antenna ANT2 through the intermediate frequency signal end MB, and the second antenna ANT2 transmits the intermediate frequency signal; when the rf circuit receives the intermediate frequency signal, the second antenna ANT2 receives the intermediate frequency signal, the intermediate frequency signal is transmitted to the duplexer Diplexer2 through the intermediate frequency signal terminal MB, and the duplexer Diplexer2 transmits the intermediate frequency signal to the rf Transceiver chip transmitter through the intermediate frequency Transceiver terminal PRX 2.
When the radio frequency circuit transmits a low-frequency signal, a low-frequency transceiving end of a Transceiver of the radio frequency transceiving chip transmits the low-frequency signal through a low-frequency signal path, and the low-frequency signal path transmits the low-frequency signal to a second antenna ANT2 through a low-frequency signal end LB, so that the second antenna ANT2 transmits the low-frequency signal; when the radio frequency circuit receives a low-frequency signal, the second antenna ANT2 receives the low-frequency signal, the low-frequency signal is transmitted to the low-frequency signal path through the low-frequency signal end LB, and the low-frequency signal path transmits the low-frequency signal to the radio frequency Transceiver chip Transceiver through the low-frequency Transceiver end.
The power amplifier PA is also connected to a duplexer Diplexer 2. When the duplexer Diplexer2 transmits an intermediate frequency signal, the power amplifier PA performs power amplification processing on the intermediate frequency signal transmitted in the duplexer Diplexer 2.
In addition, the transmission module TXM further includes a first coupler (not shown) and a second coupler (not shown), where the first coupler is disposed corresponding to the intermediate frequency signal path, and the second coupler is disposed corresponding to the low frequency signal path. The Transceiver chip transmitter further includes a first power detection terminal (not shown in the figure) coupled to the first coupler, and a second power detection terminal (not shown in the figure) coupled to the second coupler.
When the radio frequency circuit transmits an intermediate frequency signal, the intermediate frequency signal is transmitted to a duplexer dipoxer 2 through an intermediate frequency transceiving end PRX2 of a radio frequency transceiving chip Transceiver, a first coupler acquires the power of the intermediate frequency signal transmitted in the duplexer dipoxer 2 and couples the power of the intermediate frequency signal to the radio frequency transceiving chip Transceiver through a first power detection end, so that the detection of the radio frequency transceiving chip Transceiver on the power of the intermediate frequency signal transmitted in the duplexer Diplexer2 is realized, and meanwhile, the radio frequency transceiving chip Transceiver adjusts the power of the intermediate frequency signal transmitted to the duplexer Diplexer2 according to the detected power, so that the adjusted power of the intermediate frequency signal meets the actual requirement.
When the radio frequency circuit transmits a low-frequency signal, the low-frequency signal is transmitted to the low-frequency signal channel through the low-frequency Transceiver end of the radio frequency Transceiver chip Transceiver, the second coupler acquires the power of the low-frequency signal transmitted in the low-frequency signal channel and couples the power of the low-frequency signal to the radio frequency Transceiver chip Transceiver through the second power detection end, so that the detection of the low-frequency signal power transmitted in the low-frequency signal channel by the radio frequency Transceiver chip Transceiver is realized, and meanwhile, the radio frequency Transceiver chip Transceiver adjusts the power of the low-frequency signal transmitted to the low-frequency signal channel according to the detected power, so that the adjusted power of the low-frequency signal meets the actual requirement.
According to the radio frequency circuit, the switching module can be arranged, the high-frequency signal channel and the WIFI signal channel are respectively connected with the switching module, the first antenna is shared through the switching module, when the radio frequency circuit transmits high-frequency signals, the switching module is switched to the high-frequency signal channel, when the radio frequency circuit transmits WIFI signals, the switching module is switched to the WIFI signal channel, an antenna does not need to be designed for the high-frequency signals independently, the structural design of the radio frequency circuit is greatly optimized, and the antenna space is saved.
Correspondingly, the embodiment of the application also provides a mobile terminal, which comprises a radio frequency circuit, wherein the radio frequency circuit comprises a high-frequency signal channel, a WIFI signal channel, a switching module and a first antenna;
the switching module is respectively connected with the high-frequency signal path and the WIFI signal path, and the first antenna is connected with the switching module;
when the radio frequency circuit transmits a high-frequency signal, the switching module is switched to the high-frequency signal channel; when the radio frequency circuit transmits a WIFI signal, the switching module is switched to the WIFI signal channel.
In some embodiments of the present application, the high frequency signal path comprises a B30 frequency band signal path for transmitting signals in the B30 frequency band.
In some embodiments of the present application, the rf circuit further includes an rf transceiver chip, where the rf transceiver chip includes an rf transceiver terminal;
the high-frequency transceiving end is connected with the high-frequency signal path.
In some embodiments of the present application, the high frequency signal path includes a duplexer;
the duplexer is respectively connected with the high-frequency transceiving end and the switching module.
In some embodiments of the present application, the high-frequency signal path further includes a coupler, and the radio frequency transceiver chip further includes a power detection terminal;
the coupler is connected between the duplexer and the switching module, and the coupler is coupled with the power detection end.
In some embodiments of the present application, the switching module comprises a single pole double throw switch;
the moving end of the single-pole double-throw switch is connected with the first antenna, the first fixed end of the single-pole double-throw switch is connected with the WIFI signal path, and the second fixed end of the single-pole double-throw switch is connected with the coupler.
In some embodiments of the present application, the radio frequency circuit further includes a wireless signal transceiver chip, the wireless signal transceiver chip includes a WIFI signal terminal, and the WIFI signal path includes a filter;
the filter is respectively connected with the WIFI signal end and the switching module.
In some embodiments of the present application, the radio frequency circuit further comprises an intermediate frequency signal path, a low frequency signal path, a transmission module, and a second antenna;
the transmission module is respectively connected with the intermediate frequency signal path and the low frequency signal path, and the second antenna is connected with the transmission module.
According to the mobile terminal, the switching module can be arranged in the radio frequency circuit, the high-frequency signal channel and the WIFI signal channel are respectively connected with the switching module, the first antenna is shared through the switching module, when the radio frequency circuit transmits high-frequency signals, the switching module is switched to the high-frequency signal channel, when the radio frequency circuit transmits WIFI signals, the switching module is switched to the WIFI signal channel, an antenna does not need to be designed for the high-frequency signals independently, the structural design of the radio frequency circuit is greatly optimized, and the antenna space is saved.
Correspondingly, the embodiment of the application further provides a control method of the radio frequency circuit, and the radio frequency circuit comprises a high-frequency signal path, a WIFI signal path, a switching module and a first antenna.
As shown in fig. 3, the method includes:
301. acquiring the transmission state of the radio frequency circuit;
302. when the transmission state is a high-frequency signal transmission state, controlling the switching module to switch to the high-frequency signal passage, so that the switching module is communicated with the high-frequency signal passage and the first antenna;
303. and when the transmission state is a WIFI signal transmission state, controlling the switching module to switch to the WIFI signal channel, so that the switching module is communicated with the WIFI signal channel and the first antenna.
According to the embodiment of the application, the transmission state of the radio frequency circuit is acquired, so that the switching module is controlled to switch between the high-frequency signal channel and the WIFI signal channel according to the transmission state, normal transmission of the high-frequency signal and the WIFI signal is guaranteed, the structural design of the radio frequency circuit is optimized, and the antenna space is reduced.
In summary, although the present application has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present application, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, so that the scope of the present application shall be determined by the appended claims.
Claims (10)
1. A radio frequency circuit is characterized by comprising a high-frequency signal channel, a WIFI signal channel, a switching module and a first antenna;
the switching module is respectively connected with the high-frequency signal path and the WIFI signal path, and the first antenna is connected with the switching module;
when the radio frequency circuit transmits a high-frequency signal, the switching module is switched to the high-frequency signal channel; when the radio frequency circuit transmits a WIFI signal, the switching module is switched to the WIFI signal channel.
2. The radio frequency circuit according to claim 1, wherein the high frequency signal path comprises a B30 frequency band signal path for transmitting signals in a B30 frequency band.
3. The radio frequency circuit according to claim 1, wherein the radio frequency circuit further comprises a radio frequency transceiver chip, the radio frequency transceiver chip comprising a high frequency transceiver terminal;
the high-frequency transceiving end is connected with the high-frequency signal path.
4. The radio frequency circuit of claim 3, wherein the high frequency signal path includes a duplexer;
the duplexer is respectively connected with the high-frequency transceiving end and the switching module.
5. The RF circuit of claim 4, wherein the high frequency signal path further comprises a coupler, the RF transceiver chip further comprises a power detection terminal;
the coupler is connected between the duplexer and the switching module, and the coupler is coupled with the power detection end.
6. The radio frequency circuit of claim 5, wherein the switching module comprises a single-pole double-throw switch;
the moving end of the single-pole double-throw switch is connected with the first antenna, the first fixed end of the single-pole double-throw switch is connected with the WIFI signal path, and the second fixed end of the single-pole double-throw switch is connected with the coupler.
7. The radio frequency circuit of claim 1, further comprising a wireless signal transceiver chip, the wireless signal transceiver chip comprising a WIFI signal terminal, the WIFI signal path comprising a filter;
the filter is respectively connected with the WIFI signal end and the switching module.
8. The radio frequency circuit of claim 1, further comprising an intermediate frequency signal path, a low frequency signal path, a transmission module, and a second antenna;
the transmission module is respectively connected with the intermediate frequency signal path and the low frequency signal path, and the second antenna is connected with the transmission module.
9. A mobile terminal characterized in that it comprises a radio frequency circuit according to any one of claims 1 to 8.
10. The control method of the radio frequency circuit is characterized in that the radio frequency circuit comprises a high-frequency signal channel, a WIFI signal channel, a switching module and a first antenna;
the method comprises the following steps:
acquiring the transmission state of the radio frequency circuit;
when the transmission state is a high-frequency signal transmission state, controlling the switching module to switch to the high-frequency signal passage, so that the switching module is communicated with the high-frequency signal passage and the first antenna;
and when the transmission state is a WIFI signal transmission state, controlling the switching module to switch to the WIFI signal channel, so that the switching module is communicated with the WIFI signal channel and the first antenna.
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| CN201911209193.0A CN110971246A (en) | 2019-11-30 | 2019-11-30 | Radio frequency circuit, control method thereof and mobile terminal |
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| CN201911209193.0A CN110971246A (en) | 2019-11-30 | 2019-11-30 | Radio frequency circuit, control method thereof and mobile terminal |
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| CN112886980A (en) * | 2021-01-22 | 2021-06-01 | 维沃移动通信有限公司 | Radio frequency circuit and electronic device |
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