WO2022028303A1 - 射频电路和电子设备 - Google Patents
射频电路和电子设备 Download PDFInfo
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- WO2022028303A1 WO2022028303A1 PCT/CN2021/109234 CN2021109234W WO2022028303A1 WO 2022028303 A1 WO2022028303 A1 WO 2022028303A1 CN 2021109234 W CN2021109234 W CN 2021109234W WO 2022028303 A1 WO2022028303 A1 WO 2022028303A1
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- 238000002955 isolation Methods 0.000 claims abstract description 18
- 230000006855 networking Effects 0.000 claims description 2
- 238000004891 communication Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 8
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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
Definitions
- the present application belongs to the field of communication technologies, and specifically relates to a radio frequency circuit and an electronic device.
- the radio frequency circuits of electronic devices such as mobile phones and tablets need to be compatible with different standards. Therefore, the radio frequency circuits of electronic devices generally have at least two different paths, for example, one path is used for Internet communication, and the other Channels are used for voice calls.
- one path is used for Internet communication
- the other Channels are used for voice calls.
- the performance of each path can be affected compared to when a single path is operating.
- the purpose of the embodiments of the present application is to provide a radio frequency circuit and an electronic device, which can solve the problem that the performance of each channel is affected when multiple channels work simultaneously in the radio frequency circuit.
- an embodiment of the present application provides a radio frequency circuit, including a radio frequency transceiver, a combiner, a first channel, a second channel, and a first antenna unit;
- the radio frequency transceiver includes a first transmit port and a second transmit port; the combiner has a first input end, a second input end and an output end; the first transmit port communicates with the the first input end of the combiner is connected, the second transmit port is connected to the second input end of the combiner through the second channel, and the output end of the combiner is connected to the first antenna unit connect;
- the isolation degree between the first input terminal and the second input terminal is greater than or equal to the frequency band isolation degree between the first channel and the second channel.
- an embodiment of the present application provides an electronic device, including the radio frequency circuit described in the first aspect.
- the radio frequency circuit in the embodiment of the present application can realize simultaneous operation of multiple channels, and the performance of each channel will not be affected.
- FIG. 1 is a schematic structural diagram of a radio frequency circuit provided by an embodiment of the present application.
- FIG. 2 is one of the schematic diagrams of the working principles of the radio frequency circuit provided by the embodiment of the present application.
- FIG. 3 is the second schematic diagram of the working principle of the radio frequency circuit provided by the embodiment of the present application.
- first, second and the like in the description and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and distinguish between “first”, “second”, etc.
- the objects are usually of one type, and the number of objects is not limited.
- the first object may be one or more than one.
- “and/or” in the description and claims indicates at least one of the connected objects, and the character “/" generally indicates that the associated objects are in an "or” relationship.
- a radio frequency circuit includes a radio frequency transceiver 1, a combiner 2, a first path 3, a second path 4 and a first antenna unit 5;
- the radio frequency transceiver 1 includes a first transmit port 11 and a second transmit port 12; the combiner 2 has a first input end 21, a second input end 22 and an output end 23; The first input end 21 of the combiner 2 is connected, the second transmit port 12 is connected to the second input end 22 of the combiner 2 through the second channel 4, and the output end 23 of the combiner 2 is connected to the first antenna unit 5;
- the isolation degree between the first input terminal 21 and the second input terminal 22 is greater than or equal to the frequency band isolation degree between the first channel 3 and the second channel 4 .
- the radio frequency transceiver 1 may also be referred to as a radio frequency chip (wafer transceiver, WTR).
- WTR radio frequency chip
- the combiner 2 can be a three-port device, one end (ie the first input end 21 ) is connected to the first channel 3 , one end (ie the second input end 22 ) is connected to the second channel 4 , and the common end (ie the output end 23 ) is connected to the antenna (ie the first antenna unit 5).
- the first antenna unit 5 may include two antenna interfaces (Antenna hardware interface, ANT), namely ANT1 and ANT2.
- ANT antenna hardware interface
- a double pole double throw switch (Double Pole Double Throw, DPDT) can also be set in the radio frequency circuit, and the output end 23 of the combiner 2 can be connected to the above-mentioned ANT1 and ANT2 through the DPDT.
- the radio frequency circuit usually includes a low frequency band (Low Band, LB or L-band) channel, an intermediate frequency band (Middle Band, MB or M-band) channel and a high frequency band (High Band, HB) channel or H-band) channel. Therefore, in addition to the above-mentioned first via 3 and second via 4 , the radio frequency circuit may further include a third via 6 .
- the radio frequency transceiver 1 may further include a third transmission port 13, the third transmission port 13 may be connected to the third channel 6, and the radio frequency circuit may also be provided with a second antenna unit (not shown in the figure) connected to the third channel 6. out).
- the first channel 3 and the second channel 4 can be set as the intermediate frequency band channel and the high frequency band channel respectively, that is, the first channel 3 is the intermediate frequency band channel.
- Band channel the second channel 4 is a high frequency band channel
- the third channel 6 can be set as a low frequency band channel.
- the isolation between the first input end 21 and the second input end 22 of the combiner 2 is greater than or equal to the frequency band isolation between the first channel 3 and the second channel 4, the first channel 3 and the second channel
- the RF signals of the channel 4 can all pass through the combiner 2 without affecting each other.
- the combiner 2 can exhibit low-pass characteristics.
- the combiner 2 can exhibit band-pass characteristics.
- the first channel 3 and the second channel 4 are turned on at the same time. Because the combiner 2 has a high degree of isolation, the two do not affect each other, so that the At the same time, voice calls and Internet access can be realized, which can improve the user experience.
- the isolation between the first input end 21 and the second input end 22 of the combiner 2 may be greater than or equal to 15dB.
- the third channel 6 and the first channel 3 are connected in parallel to the first input end 21 of the combiner 2, so that the third channel 6 can also be connected to the combiner 2 through the combiner 2.
- the first antenna element 5 is connected without the need to separately provide the second antenna element for the third passage 6 .
- the radio frequency circuit further includes a third channel 6 and a first switch 7; the third transmit port 13 of the radio frequency transceiver 1 is connected to the third channel 6, and the multiple input ends of the first switch 7 are respectively connected to the first switch 7.
- the channel 3 is connected to the third channel 6, the output end of the first switch 7 is connected to the first input end 21 of the combiner 2, and the first switch 7 is used to control the combiner 2 to conduct the first channel 3 or Conducted with the third via 6 .
- the combiner 2 can be an LMH combiner.
- One end of the combiner 2 is connected to a low-mid-band (LM-band) channel (ie, the first channel 3 or the third channel 6 ), and one end of the combiner 2 is connected to the H-band.
- the channel ie the second channel 4
- the combiner 2 exhibits a low-pass characteristic
- the combiner 2 exhibits a band-pass characteristic.
- the first channel 3 and the third channel 6 are jointly connected to the combiner 2 through the first switch 7, so that not only the first channel 3 and the second channel 4 can work simultaneously, but also the third channel 6 It works simultaneously with the second channel 4, thereby further improving the working performance of the radio frequency circuit.
- the radio frequency circuit further includes a first coupler 8, the input end of the first coupler 8 is connected to the first channel 3, and the first output end of the first coupler 8 is connected to the first input end 21 of the combiner 2.
- the second output end of the first coupler 8 ie, the CPL_LM port in FIG. 1
- the radio frequency transceiver 1 is connected to the radio frequency transceiver 1 .
- the working performance of the first channel 3 can be improved, thereby improving the working performance of the radio frequency circuit.
- the first channel 3 and the third channel 6 can be jointly connected through the first switch 7 .
- Connected to the first coupler 8 and then connected to the combiner 2 through the first coupler 8 .
- the radio frequency circuit further includes a second coupler 9, the input end of the second coupler 9 is connected to the second channel 4, and the first output end of the second coupler 9 is connected to the second input end 22 of the combiner 2.
- the second output end of the second coupler 9 ie, the CPL_H port in FIG. 1
- the radio frequency transceiver 1 is connected to the radio frequency transceiver 1 .
- the working performance of the second channel 4 can be improved, thereby improving the working performance of the radio frequency circuit.
- first coupler 8 and the second coupler 9 not only have the above-mentioned input terminal and output terminal, but also have a port for connecting the load, which will not be described in detail.
- the first path 3 includes a second switch 31, a third switch (not shown in the figure), a first branch 33 and a second branch 34;
- the input end of the second switch 31 is connected to the first transmit port 11 , the output end of the second switch 31 is connected to the input ends of the first branch 33 and the second branch 34 respectively, and the input ends of the third switch are respectively It is connected to the output terminals of the first branch 33 and the second branch 34, the output terminal of the third switch is connected to the first input terminal 21 of the combiner 2, and the second switch 31 and the third switch are used to control The combiner 2 conducts with one of the first branch 33 and the second branch 34 .
- the second path 4 includes a fourth switch 41 , a fifth switch 42 , a third branch 43 and a fourth branch 44 ;
- the input terminal of the fourth switch 41 is connected to the second transmitting port 12 , the output terminal of the fourth switch 41 is connected to the input terminals of the third branch 43 and the fourth branch 44 respectively, and the input terminal of the fifth switch 42 are respectively connected to the output ends of the third branch 43 and the fourth branch 44, the output end of the fifth switch 42 is connected to the second input end 22 of the combiner 2, the fourth switch 41 and the fifth switch 42 It is used to control the conduction between the combiner 2 and one of the third branch 43 and the fourth branch 44 .
- the third switch can be replaced by the first switch 7 .
- the third passage 6 includes a sixth switch 61, a fifth branch 62 and a sixth branch 63;
- the input end of the sixth switch 61 is connected to the third transmitting port 13, the output end of the sixth switch 61 is connected to the input ends of the fifth branch 62 and the sixth branch 63 respectively, and the first switch 7 includes four Input terminals, the two input terminals of the first switch 7 are respectively connected to the output terminals of the fifth branch 62 and the sixth branch 63, and the other two input terminals of the first switch 7 are respectively connected to the first branch 33 and the output terminal of the sixth branch 63.
- the output end of the second branch 34 is connected, and the first switch 7 is used to control the combiner 2 and one of the first branch 33 , the second branch 34 , the fifth branch 62 and the sixth branch 63 The road is turned on.
- the above is an implementation manner in which two branches are arranged in each channel.
- the number of branches arranged in each channel is not limited to two, and may be more, which is not limited in this embodiment of the present application.
- the multiple branches in the above-mentioned channels correspond to different frequency bands respectively.
- the two branches in the first channel 3 can be B1 and B3 respectively
- the two branches in the second channel 4 can be respectively As B7 and B41
- the two branches in the third passage 6 may be B5 and B8, respectively.
- the radio frequency circuit can take into account various frequency bands, so that the working performance of the radio frequency circuit can be improved.
- the power amplifiers in the first channel 3 can be MB power amplifiers (ie, LTE intermediate frequency power amplifiers).
- the power amplifier in the second channel 4 may be an HB power amplifier (ie LTE high frequency power amplifier), and the power amplifier in the third channel 6 may be an LB power amplifier (LTE low frequency power amplifier).
- the first channel 3 is a 4G MB channel
- the second path 4 is a 4G HB path or a 5G new air interface NR path, or the second path 4 is a path shared by 4G HB and 5G NR.
- the second path 4 is a path shared by 4G HB and an independent networking (Standalone, SA).
- SA independent networking
- the above-mentioned second path 4 may be, for example, a path shared by the 4G HB path and the SAN41 path.
- the second channel 4 can be a channel shared by the 4G HB channel and the SAN41TX2 channel.
- the radio frequency circuit can also set the fourth channel 10, that is, the SAN41TX1 channel.
- the radio frequency circuit further includes a third antenna unit, and the third antenna unit may include two antenna ports, namely ANT3 and ANT4 shown in FIG. 1 , the radio frequency transceiver 1 further includes a fourth transmit port 14 , and the fourth channel One end of 10 is connected to the fourth transmitting port 14, and the other end is connected to the third antenna unit.
- the other end of the fourth channel 10 can be connected to the above-mentioned ANT3 and ANT4 through the DPDT.
- the fourth channel 10 may also be provided with devices such as a power amplifier (ie, an N41 power amplifier), a switch, a filter or a duplexer, and the comparison will not be described in detail.
- the first channel 3 is a 4G MB channel
- the second channel 4 is a channel shared by SAN41 TX2 and 4G HB
- the third channel 6 is a 4G LB channel
- the fourth channel 10 is a SAN41TX1 channel.
- the 4G B3 channel is opened to realize 1T2R communication
- the SAN41 TX2 channel and the SAN41 TX1 channel are opened to realize 2T4R communication;
- SA N41 and 4G B3 work at the same time. Due to the high isolation of combiner 2, the two do not affect each other. SA N41 maintains 2T4R and does not need to be switched to 1T2R. It can realize 4G voice communication without reducing the 5G throughput rate. , which can improve the user experience.
- 4G B3 and 4G B41 are both turned on at the same time as follows:
- the 4G B3 channel is opened to realize 1T2R communication
- the 4G B41 channel is opened to realize 1T2R communication
- 4G B41 and 4G B3 transmit at the same time to achieve uplink CA, and simultaneously receive to achieve downlink CA. Due to the high isolation of combiner 2, the mutual influence between the two channels of 4G B41 and 4G B3 is negligible, providing uplink CA and In the downlink CA function, compared with the single channel opening, the CA radio frequency performance will not deteriorate, or in other words, the receiving sensitivity will not decrease.
- the radio frequency circuit in the embodiment of the present application can realize simultaneous operation of multiple channels, and the performance of each channel will not be affected.
- An embodiment of the present application further provides an electronic device, where the electronic device includes any one of the radio frequency circuits in the foregoing embodiments.
- the electronic device in this embodiment of the present application may be a mobile electronic device or a non-mobile electronic device.
- the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a palmtop computer, an in-vehicle electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (personal digital assistant).
- assistant, PDA personal digital assistant
- non-mobile electronic devices can be servers, network attached storage (Network Attached Storage, NAS), personal computer (personal computer, PC), television (television, TV), teller machine or self-service machine, etc., this application Examples are not specifically limited.
- the electronic device in this embodiment of the present application may be an apparatus having an operating system.
- the operating system may be an Android (Android) operating system, an iOS operating system, or other possible operating systems, which are not specifically limited in the embodiments of the present application.
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Description
Claims (10)
- 一种射频电路,包括射频收发器、合路器、第一通路、第二通路和第一天线单元;所述射频收发器包括第一发射端口和第二发射端口;所述合路器具有第一输入端、第二输入端和输出端;所述第一发射端口通过所述第一通路与所述合路器的第一输入端连接,所述第二发射端口通过所述第二通路与所述合路器的第二输入端连接,所述合路器的输出端与所述第一天线单元连接;所述第一输入端与所述第二输入端之间的隔离度大于或等于所述第一通路与所述第二通路之间的频段隔离度。
- 根据权利要求1所述的射频电路,还包括第三通路和第一切换开关;所述射频收发器还包括第三发射端口,所述第三发射端口与所述第三通路连接,所述第一切换开关的多个输入端分别与所述第一通路和所述第三通路连接,所述第一切换开关的输出端与所述合路器的第一输入端连接,所述第一切换开关用于控制所述合路器与所述第一通路导通或者与所述第三通路导通。
- 根据权利要求1或2所述的射频电路,其中,所述第一通路为中频波段MB通路,所述第二通路为高频波段HB通路。
- 根据权利要求3所述的射频电路,其中,所述第一通路为4G MB通路;所述第二通路为4G HB通路或5G新空口NR通路,或者,所述第二通路为4G HB和5G NR共用的通路。
- 根据权利要求4所述的射频电路,其中,所述第二通路为4G HB和独立组网SA共用的通路。
- 根据权利要求2所述的射频电路,其中,所述第三通路为低频波段LB通路。
- 根据权利要求1或2所述的射频电路,还包括第一耦合器,所述第一耦合器的输入端与所述第一通路连接,所述第一耦合器的第一输出端与所述合路器的第一输入端连接,所述第一耦合器的第二输出端与所述射频收发器连接。
- 根据权利要求1所述的射频电路,还包括第二耦合器,所述第二耦合器的输入端与所述第二通路连接,所述第二耦合器的第一输出端与所述合路器的第二输入端连接,所述第二耦合器的第二输出端与所述射频收发器连接。
- 根据权利要求1所述的射频电路,其中,所述第一通路包括第二切换开关、第三切换开关、第一支路和第二支路;所述第二切换开关的输入端与所述第一发射端口连接,所述第二切换开关的输出端分别与所述第一支路和所述第二支路的输入端连接,所述第三切换开关的输入端分别与所述第一支路和所述第二支路的输出端连接,所述第三切换开关的输出端与所述合路器的第一输入端连接,所述第二切换开关和所述第三切换开关用于控制所述合路器与所述第一支路和所述第二支路中的一支路导通。
- 一种电子设备,包括权利要求1至9中任一项所述的射频电路。
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CN111884671A (zh) * | 2020-08-04 | 2020-11-03 | 维沃移动通信有限公司 | 射频电路和电子设备 |
CN112383320B (zh) * | 2020-11-11 | 2022-04-12 | 维沃移动通信有限公司 | 射频电路、电子设备和射频信号的收发方法 |
CN116545469A (zh) * | 2020-12-21 | 2023-08-04 | 荣耀终端有限公司 | 无线通信系统、方法、设备以及芯片 |
CN113489506B (zh) * | 2021-08-12 | 2023-01-03 | 维沃移动通信有限公司 | 射频电路和电子设备 |
CN115378444B (zh) * | 2022-08-19 | 2024-03-15 | 杭州逗酷软件科技有限公司 | 射频系统和通信设备 |
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CN110266323A (zh) * | 2019-04-23 | 2019-09-20 | 维沃移动通信有限公司 | 一种信号控制电路、终端设备和信号控制方法 |
CN111884671A (zh) * | 2020-08-04 | 2020-11-03 | 维沃移动通信有限公司 | 射频电路和电子设备 |
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