CN111817745B - Radio frequency device and mobile terminal - Google Patents
Radio frequency device and mobile terminal Download PDFInfo
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- CN111817745B CN111817745B CN202010735968.4A CN202010735968A CN111817745B CN 111817745 B CN111817745 B CN 111817745B CN 202010735968 A CN202010735968 A CN 202010735968A CN 111817745 B CN111817745 B CN 111817745B
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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
Abstract
The application discloses a radio frequency device and a mobile terminal. The radio frequency device comprises a first radio frequency module and a second radio frequency module; the first radio frequency module comprises a first transceiver module, a first receiving module, a first switch, a first antenna and a second antenna, and the second radio frequency module comprises a second transceiver module, a second receiving module, a second switch, a third antenna and a fourth antenna; the first switch is respectively connected with the first transceiver module, the first receiving module, the first antenna and the second antenna, and is used for realizing alternate transmission of the sounding reference signal between the first antenna and the second antenna; the second switch is respectively connected with the second transceiver module, the second receiving module, the third antenna and the fourth antenna, and is used for realizing the alternate transmission of the detection reference signal between the third antenna and the fourth antenna, so that the production cost can be reduced, and the production yield can be improved.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a radio frequency device and a mobile terminal.
Background
With the advent of the 5G era, people have undergone tremendous changes in their lives and working styles, which benefits from the following three scenarios: eMBB (enhanced mobile broadband) service can experience 20Gbps peak rate, AR/VR, ultra-high definition live video and the like; the uRLLC (ultra-high reliability ultra-low time delay communication) service can experience cool unmanned driving, remote driving and the like; mMTC (large-scale machine communication) business can realize the interconnection of everything by creating intelligent factories, smart cities, smart agriculture and the like.
In order to improve spectrum efficiency and improve user experience, a Sounding Reference Signal (SRS) mechanism is proposed in the 5G technology. This signal can be switched between different carriers or between different antennas of a single carrier. For example, when a user uses the system, a transmitting signal transmits data to a base station through different receiving antennas, and the base station receives and demodulates an SRS signal, so that the optimal spectrum resource is allocated to each downlink antenna, and the user obtains the highest download speed.
The downlink requirements of an N77 frequency band and an N79 frequency band in 5G are that downlink four-stream transmission is required to be supported, the uplink requirements are that uplink two-stream transmission is required to be supported, and if uplink two-stream transmission is supported, SRS antenna transmission is recommended to be supported. In order to meet the above requirements, in the prior art, the radio frequency devices in the N77 frequency band and the N79 frequency band respectively include two transceiver modules, two receiving modules, one 4P4T (4-input and 4-output) switch and four antennas, and the 4P4T is respectively connected to the two transceiver modules, the two receiving modules and the four antennas, so as to implement round sending of the SRS among the four antennas. However, 4P4T is expensive and the yield is difficult to guarantee, resulting in high cost and low yield of the rf device.
Disclosure of Invention
The embodiment of the application provides a radio frequency device and a mobile terminal, which can reduce production cost and improve production yield.
The embodiment of the application provides a radio frequency device, which comprises a first radio frequency module and a second radio frequency module; the first radio frequency module comprises a first transceiver module, a first receiving module, a first switch, a first antenna and a second antenna, and the second radio frequency module comprises a second transceiver module, a second receiving module, a second switch, a third antenna and a fourth antenna;
the first switch is respectively connected with the first transceiver module, the first receiving module, the first antenna and the second antenna, and is used for realizing alternate transmission of the sounding reference signal between the first antenna and the second antenna;
the second switch is respectively connected to the second transceiver module, the second receiving module, the third antenna, and the fourth antenna, and is configured to transmit the sounding reference signal between the third antenna and the fourth antenna in turn.
In some embodiments of the present application, the first diverter switch is a double pole double throw switch;
the first transceiver module is connected with a first movable end of the first switch, the first receiver module is connected with a second movable end of the first switch, the first antenna is respectively connected with a first immovable end and a fourth immovable end of the first switch, and the second antenna is respectively connected with a second immovable end and a third immovable end of the first switch;
when the first movable end of the first change-over switch is switched to the first immovable end and the second movable end is switched to the second immovable end, the sending of the sounding reference signal on the first antenna is realized; and when the first movable end of the first change-over switch is switched to the third immovable end and the second movable end is switched to the fourth immovable end, the transmission of the sounding reference signal on the second antenna is realized.
In some embodiments of the present application, the second transfer switch is a double pole double throw switch;
the second transceiver module is connected with the first movable end of the second switch, the second receiver module is connected with the second movable end of the second switch, the third antenna is respectively connected with the first immovable end and the fourth immovable end of the second switch, and the fourth antenna is respectively connected with the second immovable end and the third immovable end of the second switch;
when the first movable end of the second switch is switched to the first immovable end and the second movable end is switched to the second immovable end, the transmission of the sounding reference signal on the third antenna is realized; and when the first movable end of the second change-over switch is switched to the third immovable end and the second movable end is switched to the fourth immovable end, the sending of the sounding reference signal on the fourth antenna is realized.
In some embodiments of the present application, the first transceiver module includes a first transceiver unit, a second transceiver unit, and a first switching unit, and the second transceiver module includes a third transceiver unit, a fourth transceiver unit, and a second switching unit;
the first switching unit is respectively connected with the first transceiver unit, the second transceiver unit and the first switch, and is configured to implement alternate transmission of the sounding reference signal of the first frequency band or the sounding reference signal of the second frequency band between the first antenna and the second antenna;
the second switching unit is connected to the third transceiver unit, the fourth transceiver unit, and the second switch, respectively, and is configured to transmit the sounding reference signal of the first frequency band or the sounding reference signal of the second frequency band between the third antenna and the fourth antenna in turn.
In some embodiments of the present application, the first switching unit is a single pole double throw switch;
the first transceiver unit is connected with a first fixed end of the first switching unit, the second transceiver unit is connected with a second fixed end of the first switching unit, and a movable end of the first switching unit is connected with the first selector switch;
when the movable end of the first switching unit is switched to a first fixed end, the alternate transmission of the sounding reference signal of a first frequency band between the first antenna and the second antenna is realized; and when the movable end of the first switching unit is switched to a second fixed end, the alternate transmission of the sounding reference signal of a second frequency band between the first antenna and the second antenna is realized.
In some embodiments of the present application, the second switching unit is a single-pole double-throw switch;
the third transceiver unit is connected with the first fixed end of the second switching unit, the fourth transceiver unit is connected with the second fixed end of the second switching unit, and the movable end of the second switching unit is connected with the second switch;
when the movable end of the second switching unit is switched to the first fixed end, the alternate transmission of the sounding reference signal of the first frequency band between the third antenna and the fourth antenna is realized; when the moving end of the second switching unit is switched to the second fixed end, the probe reference signal of the second frequency band is transmitted between the third antenna and the fourth antenna in turn.
In some embodiments of the present application, the first frequency band is an N77 frequency band, and the second frequency band is an N79 frequency band.
In some embodiments of the present application, the first receiving module includes a first receiving unit, a second receiving unit, and a third switching unit, and the second receiving module includes a third receiving unit, a fourth receiving unit, and a fourth switching unit;
the third switching unit is respectively connected with the first receiving unit, the second receiving unit and the first switch, and is used for receiving a signal of a first frequency band or a signal of a second frequency band;
the fourth switching unit is connected to the third receiving unit, the fourth receiving unit, and the second switch, respectively, and is configured to receive a signal in the first frequency band or a signal in the second frequency band.
In some embodiments of the present application, the third switching unit and the fourth switching unit are single-pole double-throw switches, respectively;
the first receiving unit is connected with a first fixed end of the third switching unit, the second receiving unit is connected with a second fixed end of the third switching unit, and a movable end of the third switching unit is connected with the first switch;
the third receiving unit is connected with a first fixed end of the fourth switching unit, the fourth receiving unit is connected with a second fixed end of the fourth switching unit, and a movable end of the fourth switching unit is connected with the second switch.
The embodiment of the application also provides a display device of the mobile terminal, which comprises the radio frequency device.
The radio frequency device and the mobile terminal can be provided with the first radio frequency module and the second radio frequency module, the first change-over switch is arranged in the first radio frequency module and is respectively connected with the first transceiving module, the first receiving module, the first antenna and the second antenna, the second change-over switch is arranged in the second radio frequency module and is respectively connected with the second transceiving module, the second receiving module, the third antenna and the fourth antenna, the purpose that the detection reference signal is sent out between the first antenna, the second antenna, the third antenna and the fourth antenna in turn is achieved, the first change-over switch and the second change-over switch are all DPDT, and therefore 4P4T is not needed to be used, the production cost of the radio frequency device is effectively reduced, and the production yield is improved.
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 device according to an embodiment of the present application;
fig. 2 is another schematic structural diagram of a radio frequency device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. 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.
As shown in fig. 1, fig. 1 is a schematic structural diagram of a radio frequency device provided in an embodiment of the present application, where the radio frequency device includes a first radio frequency module 1 and a second radio frequency module 2. The first radio frequency module 1 includes a first transceiver module 11, a first receiving module 12, a first switch 13, a first antenna 14 and a second antenna 15, and the second radio frequency module 2 includes a second transceiver module 21, a second receiving module 22, a second switch 23, a third antenna 24 and a fourth antenna 25. The first switch 13 is respectively connected to the first transceiver module 11, the first receiving module 12, the first antenna 14, and the second antenna 15; the second switch 23 is connected to the second transceiver module 21, the second receiving module 22, the third antenna 24, and the fourth antenna 25, respectively.
In the first rf module 1, the first transceiver module 11 includes a transceiver chip for receiving and transmitting signals, the first receiving module 12 includes a receiving chip for receiving signals, and the first switch 13 is configured to switch connections between the first transceiver module 11 and the first receiving module 12 and the first antenna 14 and the second antenna 15.
When the first switch 13 is switched to connect the first transceiver module 11 with the first antenna 14 and the first receiving module 12 is connected with the second antenna 15, the first transceiver module 11 may send a sounding reference signal through the first antenna 14, meanwhile, the first transceiver module 11 receives a signal through the first antenna 14, and the first receiving module 12 receives a signal through the second antenna 15; when the first switch 13 is switched to connect the first transceiver module 11 and the second antenna 15, and the first receiving module 12 is connected to the first antenna 14, the first transceiver module 11 may send the sounding reference signal through the second antenna 15, meanwhile, the first transceiver module 11 receives the signal through the second antenna 15, and the first receiving module 12 receives the signal through the first antenna 14.
In the second rf module 2, the second transceiver module 21 includes a transceiver chip for receiving and transmitting signals, the second receiving module 22 includes a receiving chip for receiving signals, and the second switch 23 is used to switch the connection between the second transceiver module 21 and the second receiving module 22 and the third antenna 24 and the fourth antenna 25.
When the second switch 23 is switched to connect the second transceiver module 21 with the third antenna 24 and the second receiving module 22 is connected with the fourth antenna 25, the second transceiver module 21 may send the sounding reference signal through the third antenna 24, meanwhile, the second transceiver module 21 receives the signal through the third antenna 24, and the second receiving module 22 receives the signal through the fourth antenna 25; when the second switch 23 is switched to connect the second transceiver module 21 with the fourth antenna 25 and the second receiving module 22 is connected with the third antenna 24, the second transceiver module 21 can transmit the sounding reference signal through the fourth antenna 25, meanwhile, the second transceiver module 21 receives the signal through the fourth antenna 25, and the second receiving module 22 receives the signal through the third antenna 24.
In the first radio frequency module 1 and the second radio frequency module 2, the first transceiver module 11, the first receiving module 12, the second transceiver module 21 and the second receiving module 22 receive signals through four antennas to support downlink four-stream transmission; the first transceiver module 11 and the second transceiver module 21 transmit signals through four antennas to support uplink dual-stream transmission. Meanwhile, the first transceiver module 11 is switched between the first antenna 14 and the second antenna 15 through the first switch 13, so as to realize the alternate transmission of the sounding reference signal between the first antenna 14 and the second antenna 15; the second switch 23 switches the second transceiver module 21 between the third antenna 24 and the fourth antenna 25, so as to transmit the sounding reference signal between the third antenna 24 and the fourth antenna 25, and thus transmit the sounding reference signal between the four antennas. The sounding reference signal is sent to the base station through different antennas, and the base station can acquire the MIMO characteristic, the antenna state information, the channel quality and the like of the terminal where the radio frequency device is located after receiving and demodulating the sounding reference signal, and then configures corresponding resources, such as a modulation mode, the number of resource blocks, spectrum resources and the like, for the current antenna so as to ensure that the terminal has the highest downloading speed.
In the embodiment, two change-over switches DPDT are adopted to realize that downlink supports four-stream transmission and uplink supports two-stream transmission and supports SRS antenna transmission, and the DPDT has mature technology and low price compared with 4P4T, so that the production cost of the radio frequency device is effectively reduced, the production yield is improved, and the delay risk in mass production is avoided.
Further, as shown in fig. 2, the first change-over switch 1 is a double-pole double-throw switch; the first transceiver module 11 is connected to a first movable end a1 of the first switch 13, the first receiver module 12 is connected to a second movable end a2 of the first switch 13, the first antenna 14 is connected to a first stationary end A3 and a fourth stationary end a6 of the first switch 13, respectively, and the second antenna 15 is connected to a second stationary end a4 and a third stationary end a5 of the first switch 13, respectively.
When the first moving end a1 of the first switch 13 is switched to the first stationary end A3 and the second moving end a2 is switched to the second stationary end a4, the first transceiver module 11 is connected to the first antenna 14, and the first receiving module 12 is connected to the second antenna 15, so as to implement transmission of the sounding reference signal on the first antenna 14, and receive the signal through the first antenna 14 and the second antenna 15; when the first moving end a1 of the first switch 13 is switched to the third moving end a5 and the second moving end a2 is switched to the fourth moving end a6, the first transceiver module 11 is connected to the second antenna 15, and the first receiving module 12 is connected to the first antenna 14, so that the sounding reference signal is transmitted to the second antenna 15, and the first antenna 14 and the second antenna 15 receive the signal.
Further, as shown in fig. 2, the second switch 23 is a double-pole double-throw switch; the second transceiver module 21 is connected to the first movable end B1 of the second switch 23, the second receiver module 22 is connected to the second movable end B2 of the second switch 23, the third antenna 24 is connected to the first and fourth stationary ends B3 and B6 of the second switch 23, and the fourth antenna 25 is connected to the second and third stationary ends B4 and B5 of the second switch 23.
When the first moving end B1 of the second switch 23 is switched to the first fixed end B3 and the second moving end B2 is switched to the second fixed end B4, the sounding reference signal is transmitted through the third antenna 24, and signals are received through the third antenna 24 and the fourth antenna 25; when the first moving end B1 of the second switch 23 is switched to the third moving end B4 and the second moving end B2 is switched to the fourth moving end B5, the sounding reference signal is transmitted through the fourth antenna 25, and the signals are received through the third antenna 24 and the fourth antenna 25.
In addition, the radio frequency device provided by the present application may implement signal transmission in different frequency bands in a time-sharing manner, for example, implement signal transmission in a first frequency band in a first time period, that is, in the first time period, the first transceiver module 11 and the second transceiver module 21 are adjusted to receive and transmit signals in the first frequency band, and the first receiver module 12 and the second receiver module 22 are adjusted to receive signals in the first frequency band, so as to support downlink four-stream transmission, uplink two-stream transmission, and SRS antenna round transmission in the first frequency band; in a second time period (which is not coincident with the first time period), the transmission of the signal in the second frequency band is realized, that is, in the second time period, the first transceiver module 11 and the second transceiver module 21 are adjusted to receive and transmit the signal in the second frequency band, and the first receiver module 12 and the second receiver module 22 are adjusted to receive the signal in the second frequency band, so as to support downlink four-stream transmission, uplink two-stream transmission, and SRS antenna transmission in the second frequency band.
In 5G, since the N77 frequency band and the N79 frequency band do not work simultaneously, the N77 frequency band and the N79 frequency band may share the radio frequency device provided by the present application, that is, the first frequency band may be the N77 frequency band, and the second frequency band may be the N79 frequency band. The N77 frequency band and the N79 frequency band in the prior art need to be configured with one radio frequency device respectively, that is, the N77 frequency band and the N79 frequency band in the prior art need to use two 4P4T, and the N77 frequency band and the N79 frequency band in the application share one radio frequency device, so that the production cost of the radio frequency device is further reduced.
Specifically, as shown in fig. 2, the first transceiver module 11 includes a first transceiver unit 31, a second transceiver unit 32 and a first switching unit 35, and the second transceiver module 12 includes a third transceiver unit 33, a fourth transceiver unit 34 and a second switching unit 36; the first switching unit 35 is connected to the first transceiver unit 31, the second transceiver unit 32, and the first switch 13, respectively; the second switching unit 36 is connected to the third transceiver unit 33, the fourth transceiver unit 34, and the second switch 23, respectively.
When the radio frequency device is applied to the first frequency band, the first switching unit 35 switches to the first transceiver unit 31, that is, the first switch 13 is connected to the first transceiver unit 31 through the first switching unit 35, and the sounding reference signal of the first frequency band sent by the first transceiver unit 31 is switched through the first switch 13, so that alternate transmission between the first antenna 14 and the second antenna 15 is realized; meanwhile, the second switch unit 36 is switched to the third transceiver unit 33, that is, the second switch 23 is connected to the third transceiver unit 33 through the second switch unit 36, and the sounding reference signal of the first frequency band transmitted by the third transceiver unit 33 is switched through the second switch 23, so that alternate transmission between the third antenna 24 and the fourth antenna 25 is realized.
When the radio frequency device is applied to the second frequency band, the first switching unit 35 is switched to the second transceiver unit 32, that is, the first switching switch 13 is connected to the second transceiver unit 32 through the first switching unit 35, and the sounding reference signal of the second frequency band sent by the second transceiver unit 32 is switched through the first switching switch 13, so that alternate sending between the first antenna 14 and the second antenna 15 is realized; meanwhile, the second switch unit 36 is switched to the fourth transceiver unit 34, that is, the second switch 23 is connected to the fourth transceiver unit 34 through the second switch unit 36, and the sounding reference signal of the second frequency band transmitted by the fourth transceiver unit 34 is switched through the second switch 23, so that alternate transmission between the third antenna 24 and the fourth antenna 25 is realized.
The first transceiver unit 31, the second transceiver unit 32, the third transceiver unit 33, and the fourth transceiver unit 34 may be transceiver chips, the chip types of the first transceiver unit 31 and the third transceiver unit 33 may be QPM5677, and are applied to the N77 frequency band, and the chip types of the second transceiver unit 32 and the fourth transceiver unit 34 may be QPM5679, and are applied to the N79 frequency band.
Specifically, as shown in fig. 2, the first switching unit 35 is a single-pole double-throw switch; the first transceiver unit 31 is connected to the first stationary terminal C1 of the first switch unit 35, the second transceiver unit 32 is connected to the second stationary terminal C2 of the first switch unit 35, and the moving terminal C3 of the first switch unit 35 is connected to the first moving terminal a1 of the first switch 13.
When the moving end C3 of the first switching unit 35 is switched to the first stationary end C1, the first switch 13 is connected to the first transceiver unit 31 through the first switching unit 35, so as to realize the alternate transmission of the sounding reference signal of the first frequency band between the first antenna 14 and the second antenna 15; when the movable end C3 of the first switch unit 35 is switched to the second stationary end C2, the first switch 13 is connected to the second transceiver unit 32 through the first switch unit 35, so as to realize alternate transmission of the sounding reference signal of the second frequency band between the first antenna 14 and the second antenna 15.
Similarly, the second switching unit 36 is a single-pole double-throw switch; the third transceiver unit 33 is connected to the first fixed terminal D1 of the second switch unit 36, the fourth transceiver unit 34 is connected to the second fixed terminal D2 of the second switch unit 36, and the movable terminal D3 of the second switch unit 36 is connected to the first movable terminal B1 of the second switch 23.
When the moving end D3 of the second switching unit 36 is switched to the first stationary end D1, the second switch 23 is connected to the third transceiver unit 33 through the second switching unit 36, so as to transmit the sounding reference signal of the first frequency band between the third antenna 24 and the fourth antenna 25; when the moving end D3 of the second switching unit 36 is switched to the second stationary end D2, the second switch 23 is connected to the fourth transceiver unit 34 through the second switching unit 36, so as to transmit the sounding reference signal of the second frequency band between the third antenna 24 and the fourth antenna 25.
Further, as shown in fig. 2, the first receiving module 12 includes a first receiving unit 41, a second receiving unit 42 and a third switching unit 45, and the second receiving module 22 includes a third receiving unit 43, a fourth receiving unit 44 and a fourth switching unit 46; the third switching unit 45 is connected to the first receiving unit 41, the second receiving unit 42, and the first switch 13, respectively; the fourth switching unit 46 is connected to the third receiving unit 43, the fourth receiving unit 44, and the second switch 23, respectively.
When the radio frequency device is applied to the first frequency band, the third switching unit 45 switches to the first receiving unit 41, that is, the first switch 13 is connected to the first receiving unit 41 through the third switching unit 45, so that the first transceiver unit 31 and the first receiving unit 41 receive the signals of the first frequency band through the first antenna 14 and the second antenna 15; meanwhile, the fourth switching unit 46 switches to the third receiving unit 43, that is, the second switch 23 is connected to the third receiving unit 43 through the fourth switching unit 46, so that the third transceiving unit 33 and the third receiving unit 43 receive the signals of the first frequency band through the third antenna 24 and the fourth antenna 25.
When the radio frequency device is applied to the second frequency band, the third switching unit 45 switches to the second receiving unit 42, that is, the first switch 13 is connected to the second receiving unit 42 through the third switching unit 45, so that the second transceiving unit 32 and the second receiving unit 42 receive the signals of the second frequency band through the first antenna 14 and the second antenna 15; meanwhile, the fourth switching unit 46 switches to the fourth receiving unit 44, that is, the second switch 23 is connected to the fourth receiving unit 44 through the fourth switching unit 46, so that the fourth transceiving unit 34 and the fourth receiving unit 44 receive the signals of the second frequency band through the third antenna 24 and the fourth antenna 25.
The first receiving unit 41, the second receiving unit 42, the third receiving unit 43, and the fourth receiving unit 44 may be receiving chips, the chip type numbers of the first receiving unit 41 and the third receiving unit 43 may be QDM5677, which is applied to the N77 frequency band, and the chip type numbers of the second receiving unit 42 and the fourth receiving unit 44 may be QDM5679, which is applied to the N79 frequency band.
Specifically, as shown in fig. 2, the third switching unit 45 and the fourth switching unit 46 are single-pole double-throw switches SPDT, respectively; the first receiving unit 41 is connected to the first fixed terminal E1 of the third switching unit 45, the second receiving unit 42 is connected to the second fixed terminal E2 of the third switching unit 45, and the movable terminal E3 of the third switching unit 45 is connected to the second movable terminal a2 of the first switch 13; the third receiving unit 43 is connected to the first fixed terminal F1 of the fourth switching unit 46, the fourth receiving unit 44 is connected to the second fixed terminal F2 of the fourth switching unit 46, and the movable terminal F3 of the fourth switching unit 46 is connected to the second movable terminal B2 of the second switch 23.
When the radio frequency device is applied to the first frequency band, the movable end E3 of the third switch unit 45 is switched to the first stationary end E1, and the first switch 13 is connected to the first receiving unit 41 through the third switch unit 45; the movable terminal F3 of the fourth switching unit 46 is switched to the first stationary terminal F1, and the second switch 23 is connected to the third receiving unit 43 through the fourth switching unit 46.
When the radio frequency device is applied to the second frequency band, the movable terminal E3 of the third switch unit 45 is switched to the second stationary terminal E2, and the first switch 13 is connected to the second receiving unit 42 through the third switch unit 45; the movable terminal F3 of the fourth switching unit 46 is switched to the second stationary terminal F2, and the second switch 23 is connected to the fourth receiving unit 44 through the fourth switching unit 46.
Because 4P4T in the prior art is still in the engineering sample period, the price is high, and the yield is difficult to guarantee, two 4P4T in the prior art are replaced by four SPDTs and two DPDTs, and the SPDTs and the DPDTs are mature in technology and low in price, so that the production cost is effectively reduced, and the production yield is improved.
In addition, the first rf module 1 further includes a first transceiving signal processing module (not shown in the figure) and a first receiving signal processing module (not shown in the figure), wherein the first transceiving signal processing module is connected between the first transceiving module 11 and the first switch 13 to amplify, filter and otherwise adjust the signals into signals of a specific frequency band; the first receiving signal processing module is connected between the first receiving modules 12 to amplify, filter, etc. the signals to be adjusted to signals of a specific frequency band.
The second rf module 2 further includes a second transceiving signal processing module (not shown in the figure) and a second receiving signal processing module (not shown in the figure), and the second transceiving signal processing module is connected between the second transceiving module 21 and the second switch 23 to amplify, filter, etc. the signal to be adjusted to a signal of a specific frequency band; the second receiving signal processing module is connected between the second receiving modules 22 to amplify, filter, etc. the signals to be adjusted to signals of specific frequency bands.
According to the above, the first radio frequency module and the second radio frequency module can be arranged, the first change-over switch is arranged in the first radio frequency module and is respectively connected with the first transceiver module, the first receiving module, the first antenna and the second antenna, the second change-over switch is arranged in the second radio frequency module and is respectively connected with the second transceiver module, the second receiving module, the third antenna and the fourth antenna, the purpose that the detection reference signals are sent between the first antenna, the second antenna, the third antenna and the fourth antenna in turn is achieved, the first change-over switch and the second change-over switch are all DPDT, therefore, 4P4T is not needed, the production cost of the radio frequency device is effectively reduced, and the production yield is improved.
The embodiment of the present application further provides a mobile terminal, where the mobile terminal includes the radio frequency device in the foregoing embodiment, and details are not repeated here. The mobile terminal may include a mobile phone, a tablet computer, and the like.
The embodiment can realize the alternate sending of the detection reference signal among the four antennas, reduce the production cost of the radio frequency device and improve the production yield.
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 is defined by the appended claims.
Claims (9)
1. A radio frequency device is characterized by comprising a first radio frequency module and a second radio frequency module; the first radio frequency module comprises a first transceiving module, a first receiving module, a first change-over switch, a first antenna and a second antenna, and the second radio frequency module comprises a second transceiving module, a second receiving module, a second change-over switch, a third antenna and a fourth antenna;
the first switch is respectively connected with the first transceiver module, the first receiving module, the first antenna and the second antenna, and is used for realizing alternate transmission of the sounding reference signal between the first antenna and the second antenna;
the second switch is respectively connected to the second transceiver module, the second receiving module, the third antenna, and the fourth antenna, and is configured to implement alternate transmission of sounding reference signals between the third antenna and the fourth antenna;
the sounding reference signal is received and demodulated by a base station, so that the base station configures corresponding resources for an antenna which sends the sounding reference signal;
the first transceiver module comprises a first transceiver unit, a second transceiver unit and a first switching unit, and the second transceiver module comprises a third transceiver unit, a fourth transceiver unit and a second switching unit;
the first switching unit is respectively connected with the first transceiver unit, the second transceiver unit and the first switch, and is configured to implement alternate transmission of the sounding reference signal of the first frequency band or the sounding reference signal of the second frequency band between the first antenna and the second antenna;
the second switching unit is connected to the third transceiver unit, the fourth transceiver unit, and the second switch, respectively, and is configured to transmit the sounding reference signal of the first frequency band or the sounding reference signal of the second frequency band between the third antenna and the fourth antenna in turn.
2. The radio frequency device according to claim 1, wherein the first change-over switch is a double-pole double-throw switch;
the first transceiver module is connected with a first movable end of the first switch, the first receiver module is connected with a second movable end of the first switch, the first antenna is respectively connected with a first immovable end and a fourth immovable end of the first switch, and the second antenna is respectively connected with a second immovable end and a third immovable end of the first switch;
when the first movable end of the first change-over switch is switched to the first immovable end and the second movable end is switched to the second immovable end, the sending of the sounding reference signal on the first antenna is realized; and when the first movable end of the first change-over switch is switched to the third immovable end and the second movable end is switched to the fourth immovable end, the transmission of the sounding reference signal on the second antenna is realized.
3. The radio frequency device according to claim 1, wherein the second switch is a double pole double throw switch;
the second transceiver module is connected with the first movable end of the second switch, the second receiver module is connected with the second movable end of the second switch, the third antenna is respectively connected with the first immovable end and the fourth immovable end of the second switch, and the fourth antenna is respectively connected with the second immovable end and the third immovable end of the second switch;
when the first movable end of the second change-over switch is switched to the first immovable end and the second movable end is switched to the second immovable end, the sending of the sounding reference signal on the third antenna is realized; and when the first movable end of the second change-over switch is switched to the third immovable end and the second movable end is switched to the fourth immovable end, the sending of the sounding reference signal on the fourth antenna is realized.
4. The radio frequency device according to claim 1, wherein the first switching unit is a single-pole double-throw switch;
the first transceiver unit is connected with a first fixed end of the first switching unit, the second transceiver unit is connected with a second fixed end of the first switching unit, and a movable end of the first switching unit is connected with the first selector switch;
when the movable end of the first switching unit is switched to a first fixed end, the alternate transmission of the sounding reference signal of a first frequency band between the first antenna and the second antenna is realized; and when the movable end of the first switching unit is switched to a second fixed end, the alternate transmission of the sounding reference signal of a second frequency band between the first antenna and the second antenna is realized.
5. The radio frequency device according to claim 1, wherein the second switching unit is a single-pole double-throw switch;
the third transceiver unit is connected with the first fixed end of the second switching unit, the fourth transceiver unit is connected with the second fixed end of the second switching unit, and the movable end of the second switching unit is connected with the second switch;
when the movable end of the second switching unit is switched to the first fixed end, the alternate transmission of the sounding reference signal of the first frequency band between the third antenna and the fourth antenna is realized; when the moving end of the second switching unit is switched to the second fixed end, the probe reference signal of the second frequency band is transmitted between the third antenna and the fourth antenna in turn.
6. The radio frequency device according to claim 1, wherein the first frequency band is an N77 frequency band, and the second frequency band is an N79 frequency band.
7. The radio frequency device according to claim 1, wherein the first receiving module includes a first receiving unit, a second receiving unit and a third switching unit, and the second receiving module includes a third receiving unit, a fourth receiving unit and a fourth switching unit;
the third switching unit is respectively connected with the first receiving unit, the second receiving unit and the first switch, and is used for receiving a signal of a first frequency band or a signal of a second frequency band;
the fourth switching unit is connected to the third receiving unit, the fourth receiving unit, and the second switch, respectively, and is configured to receive a signal in the first frequency band or a signal in the second frequency band.
8. The radio frequency device according to claim 7, wherein the third switching unit and the fourth switching unit are single-pole double-throw switches, respectively;
the first receiving unit is connected with a first fixed end of the third switching unit, the second receiving unit is connected with a second fixed end of the third switching unit, and a movable end of the third switching unit is connected with the first switch;
the third receiving unit is connected with a first fixed end of the fourth switching unit, the fourth receiving unit is connected with a second fixed end of the fourth switching unit, and a movable end of the fourth switching unit is connected with the second switch.
9. A mobile terminal characterized by comprising a radio frequency device according to any one of claims 1 to 8.
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| CN112350744B (en) * | 2020-10-30 | 2023-02-03 | 维沃移动通信有限公司 | Antenna switching method and device, signal transceiving circuit and electronic equipment |
| CN113938156B (en) * | 2021-09-27 | 2023-02-03 | 青岛海信移动通信技术股份有限公司 | Signal channel switching method and device |
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