WO2023197662A1 - Circuit radiofréquence à double transmission et dispositif électronique - Google Patents

Circuit radiofréquence à double transmission et dispositif électronique Download PDF

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Publication number
WO2023197662A1
WO2023197662A1 PCT/CN2022/140164 CN2022140164W WO2023197662A1 WO 2023197662 A1 WO2023197662 A1 WO 2023197662A1 CN 2022140164 W CN2022140164 W CN 2022140164W WO 2023197662 A1 WO2023197662 A1 WO 2023197662A1
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radio frequency
frequency
circuit
dual
signal
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PCT/CN2022/140164
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English (en)
Chinese (zh)
Inventor
张亭
仝林
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Oppo广东移动通信有限公司
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Publication of WO2023197662A1 publication Critical patent/WO2023197662A1/fr

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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
    • 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

Definitions

  • This application relates to but is not limited to electronic technology, and particularly refers to a dual-radio frequency circuit and electronic equipment.
  • the current mainstream Sub-6G ENDC combination frequency bands include B3 frequency band and N41 frequency band, B3 frequency band and N40 frequency band, B25 frequency band and N41 frequency band, etc., but are not limited to these combination frequency bands.
  • ENDC is the abbreviation of EUTRA NR Dual-Connectivity, E stands for E-UTRA, which belongs to the air interface of 3GPP LTE and is the eighth version of 3GPP; N stands for N Radio 5G; D stands for LTE and 5G dual connection.
  • ENDC can be understood as the mutual compatibility of 4G and 5G dual connections.
  • MMPA Multimode Multiband Power Amplifier
  • This application provides a dual-radio frequency circuit and electronic equipment, which can reduce the area occupied by the motherboard and reduce the cost at the same time.
  • the embodiment of the present application provides a dual transmit frequency circuit, including: a radio frequency transceiver, a radio frequency multi-mode multi-frequency power amplifier MMPA device, an intermediate frequency power amplifier MB PA device, a filter circuit and an antenna; wherein,
  • the radio frequency MMPA device is used to receive radio frequency signals from the radio frequency transceiver and perform power amplification on the received radio frequency signals; supports selective transmission of multiple high frequency signals, selective transmission of multiple intermediate frequency signals, and selective transmission of multiple intermediate frequency signals. Selective transmission of multiple low-frequency signals supports selective reception of multiple high-frequency signals;
  • the MB PA device is used to receive the intermediate frequency signal from the radio frequency transceiver, power amplify the received intermediate frequency signal; support the selective transmission of multiple intermediate frequency signals;
  • the filter circuit is used to receive the radio frequency signal output from the radio frequency MMPA device and the MB PA device, perform filtering processing on the radio frequency signal of the first standard, and perform simultaneous sending and receiving processing and filtering processing on the radio frequency signal of the second standard. ;
  • the filtered radio frequency signal is output to the antenna for transmission to achieve the transmission of any two ENDC combinations between low frequency signals, intermediate frequency signals and high frequency signals;
  • the MB PA and low-frequency power amplifier LB PA in the radio frequency MMPA device are powered by different power supplies from the MB PA device.
  • the dual transmitting frequency circuit does not require two MMPA devices to realize the transmission of any pair of ENDC combinations between the LB signal, the MB signal and the HB signal, reducing the burden on the electronic equipment where the dual transmitting frequency circuit is located.
  • the motherboard occupies less area while reducing costs.
  • the dual transmitter frequency circuits in some areas that need to support more downlink CA combinations are shared with the dual transmitter frequency circuits of TxM that only use one SP16T switch. This not only saves manpower and material resources, but also helps save costs. .
  • An embodiment of the present application also provides an electronic device, including the dual radio frequency circuit described in any one of the above.
  • Figure 1 is a simple architectural schematic diagram of an embodiment of NSA networking in related technologies
  • Figure 2(a) is a schematic diagram of an LTE dual connection in the related art
  • Figure 2(b) is a schematic diagram of an LTE-NR dual connection in related technology
  • Figure 3 is a schematic structural diagram of a dual-radio frequency circuit in an embodiment of the present application.
  • Figure 4 is a schematic structural diagram of another dual-radio frequency circuit in the embodiment of the present application.
  • Figure 5 is a schematic structural diagram of the circuit composition of the first embodiment of the dual-radio frequency circuit in the embodiment of the present application;
  • Figure 6 is a schematic structural diagram of the circuit composition of the second embodiment of the dual-radio frequency circuit in the embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of the circuit structure of the third embodiment of the dual-radio frequency circuit in the embodiment of the present application.
  • first and second used in this application are only used for descriptive purposes and cannot be understood to indicate or imply the relative importance or implicitly indicate the number of indicated technical features. Thus, features defined as “first” and “second” may explicitly or implicitly include at least one of these features. In the description of this application, “plurality” means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.
  • connection in the following embodiments should be understood as “electrical connection”, “communication connection”, etc. if the connected circuits, modules, units, etc. have the transmission of electrical signals or data between each other.
  • the latest 5G Non-Standalone (NSA, Non-Standalone) standard released by 3GPP uses LTE and 5G New Radio (NR) dual connectivity (ENDC), with 4G as the anchor point of the control plane and 4G base station (eNB) as the main station, the 5G base station (gNB) is the slave station, and follows the 4G core network.
  • the simple architecture diagram of the NSA networking embodiment is shown in Figure 1(a), in which the control plane (C-plane) is responsible for processing control signals. That is to manage the call connection, the user plane (U-plane) is responsible for processing the voice signal, that is, managing the call content. In NSA mode, you can only connect to the 5G network through the C-plane first before connecting to the 4G network.
  • RRC Radio Resource Control
  • the master station and the slave station each perform radio resource management (RRM).
  • RRM radio resource management
  • the RRM function interacts and collaborates between the master station and the slave station through the X2 interface. For example, after the slave station allocates resources, it interacts with the master station through the X2 interface, and then The master station sends an RRC message containing the slave station resource configuration to the terminal. That is, as shown in Figure 2(a), the terminal can only see the only RRC message from the master station, and will only reply to the master station.
  • the slave station In LTE-NR dual connectivity, not only the master station and the slave station perform RRM respectively, but the RRC protocol is also independently established between the master station and the terminal and between the slave station and the terminal. That is, as shown in Figure 2(b), the slave station no longer performs RRM interaction and coordination with the master station through the X2 interface, but directly transmits the RRC message from the slave station to the terminal.
  • independent RRC connections also mean that the master and slave stations can set up RRC measurements independently.
  • two MMPAs can be used to form a dual transmit frequency circuit.
  • the ENDC combined frequency band is the B3 frequency band and the N41 frequency band.
  • one of the MMPAs namely MMPA1
  • MMPA1 is powered by a Boost power supply
  • the other MMPA namely MMPA2
  • MMPA2 is powered by a Buck power supply.
  • the B3 band signal is a frequency division duplex (FDD) standard signal.
  • the intermediate frequency band (MB) port of MMPA2 is connected to the Tx port of the B3 duplexer.
  • the public port of the B3 duplexer passes through the SP16T switch in the transmit module (TxM).
  • TxM can also include GSM LB PA and GSM HB PA;
  • the N41 band signal is a time division duplex (TDD) signal, and the high-frequency band (HB) port in MMPA1 communicates with the first antenna through the N41 filter ANT1 connection.
  • TDD time division duplex
  • HB high-frequency band
  • MMPA1 communicates with the first antenna through the N41 filter ANT1 connection.
  • a transmitted signal, the N41 radio frequency signal is output from the high frequency input (HB IN) port of the radio frequency transceiver (Transceiver) to the high frequency signal input port (RFIN_H) of MMPA1.
  • the N41 radio frequency signal passes through the high frequency input port of MMPA1.
  • HB PA frequency power amplifier
  • SPDT single-pole double-throw
  • RFIN_M IF signal input port
  • the B3 RF signal is amplified by the IF power amplifier (MB PA) in the MMPA2 and then output from the SP5T
  • the power-amplified B3 RF signal is input to the Tx port of the B3 duplexer, and then output from the common port of the B3 duplexer, and is radiated from the second antenna ANT2 through the SP16T switch in the TxM.
  • MMPA1 uses a Boost power supply; LTE linear The degree and power requirements are not as high as that of NR, and its operating voltage is lower.
  • MMPA2 only needs to be powered by the Buck power supply used for voltage reduction.
  • ENDC combination frequency bands as the B3 frequency band and the N41 frequency band as an example. It should be noted that the dual transmitter frequency circuit shown in Figure 3 can support any pair of ENDC combinations between LB, MB and HB.
  • the dual-radio frequency circuit shown in Figure 3 requires the use of two RF MMPA devices, a Boost power supply, a Buck power supply and a TxM device.
  • the motherboard area of electronic equipment is precious.
  • This kind of dual-radio frequency circuit that requires two RF MMPA devices will occupy a large area, and the two RF MMPA devices will also bring about high costs.
  • the switches corresponding to the LB band and MHB band need to be designed separately, and the SP16T switch in the TxM in Figure 3 can no longer meet the needs; moreover, in these areas
  • the area of TxM in the dual transmitter frequency circuit is relatively larger, which means that the dual transmitter frequency circuit in these areas cannot be shared with the TxM dual transmitter frequency circuit of a single SP16T switch. In this way, not only is there a lot of manpower and It is a waste of material resources and is not conducive to cost savings.
  • an embodiment of the present application provides a dual-radio frequency circuit, as shown in Figure 4, including: a radio frequency transceiver 10, a radio frequency MMPA device 20, and an MB PA device. 30. Filter circuit 40 and antenna; among them,
  • the radio frequency MMPA device 20 is used to receive the radio frequency signal sent by the radio frequency transceiver 10 and perform power amplification on the received radio frequency signal; it supports the selective transmission of multiple high frequency signals, the selective transmission of multiple intermediate frequency signals, and the selective transmission of multiple intermediate frequency signals. Selective transmission of low-frequency signals supports selective reception of multiple high-frequency signals;
  • MB PA device 30 is used to receive the intermediate frequency signal from the radio frequency transceiver 10 and power amplify the received intermediate frequency signal; supports selective transmission of multiple intermediate frequency signals;
  • the filter circuit 40 is used to receive the radio frequency signal output from the radio frequency MMPA device 20 and the MB PA device 30, perform filtering processing on the radio frequency signal of the first standard, and perform simultaneous sending and receiving processing and filtering processing on the radio frequency signal of the second standard; filtering processing The final RF signal is output to the antenna for transmission to achieve the transmission of any ENDC combination of low-frequency signals, intermediate-frequency signals and high-frequency signals;
  • the medium frequency PA and low frequency PA in the radio frequency MMPA device 20 and the MB PA device 30 are powered by different power supplies.
  • the dual transmitting frequency circuit does not require two MMPA devices to realize the transmission of any pair of ENDC combinations between the LB signal, the MB signal and the HB signal, reducing the burden on the electronic equipment where the dual transmitting frequency circuit is located.
  • the motherboard occupies less area while reducing costs.
  • the filter circuit 40 is also used to filter the radio frequency signals received by the antenna before entering their respective receiving paths.
  • the specific implementation does not limit the scope of protection of the present application and will not be described again here.
  • the radio frequency MMPA device 20 is provided with a high frequency signal input port RFIN_H, a first intermediate frequency signal input port RFIN_M and a low frequency signal input port RFIN_L, which respectively correspond to the radio frequency transceiver.
  • the high-frequency signal output port HB_IN, the intermediate-frequency signal output port MB_IN and the low-frequency signal output port LB_IN of 10 are connected to correspond to receiving radio frequency signals of various frequency bands emitted by the radio frequency transceiver 10 .
  • the radio frequency MMPA device 20 can support the transmission of multiple high-frequency signals in different frequency bands to achieve transmission switching control between multiple high-frequency signals, and can also be used as a transmission device for multiple high-frequency signal receiving channels, and support multiple high-frequency signal reception channels. Selective transmission of an intermediate frequency signal and selective transmission of multiple low-frequency signals.
  • Multiple high-frequency signals can include high-frequency signals in different frequency bands and different duplex formats such as 4G LTE signals and 5G NR signals.
  • the frequency bands of multiple high-frequency signals may include, but are not limited to, B38 frequency band, B7 frequency band, B40 frequency band, B41 frequency band, N7 frequency band, N41 frequency band, etc.
  • Multiple intermediate frequency signals may include intermediate frequency signals of different frequency bands in 4G LTE signals and 5G NR signals, such as B3 frequency band, N1 frequency band, etc.
  • Multiple low-frequency signals may include low-frequency signals in different frequency bands such as 4G LTE signals and 5G NR signals, such as the B20 frequency band.
  • the radio frequency MMPA device 20 is also provided with multiple transceiver port groups for connecting (can also be connected through external circuits) antennas, and each transceiver port group includes a receive port HB_TRX and a first transceiver port HB.
  • the number of transceiver port groups is greater than or equal to the number of high-frequency signals, where each transceiver port group is used to transmit a high-frequency signal, and the high-frequency signals transmitted by each transceiver port group are different; and, for connection (also The plurality of first intermediate frequency transmission ports MB and the plurality of low frequency transmission ports LB of the antenna may be connected through external circuits.
  • the MB PA device 30 is provided with a second intermediate frequency signal input port RFIN_M0, which is connected to the intermediate frequency signal output port MB_IN0 of the radio frequency transceiver 10 to receive the radio frequency transceiver 20
  • the MB PA device 30 is also provided with a second intermediate frequency transmitting port for connecting an antenna (which can be connected through an external circuit).
  • the filter circuit 40 may at least include multiple filters 401 (N41 filter 401 in FIG. 5 ) and multiple duplexers 402 (as shown in FIG. 5 ). N7 duplexer 402, B3 duplexer 402, B20 duplexer 402, N1 duplexer 402) in 5, wherein the filter 401 is used to filter the radio frequency signal of the first standard, and the duplexer 402 Used to realize simultaneous sending and receiving processing and filtering processing of radio frequency signals of the second standard.
  • the first standard is the TDD standard
  • the second standard is the FDD standard.
  • FDD communication link separate frequency bands are used for transmission and reception.
  • TDD communication link the separation of uplink and downlink is achieved by allocating different time slots in the same frequency band.
  • the dual-radio frequency circuit in the embodiment of the present application may further include: a transmitting circuit 50 for receiving the radio frequency signal output from the filter circuit 40 and converting the filtered The RF signal is output to the antenna for transmission to achieve any ENDC combination of low-frequency signals, intermediate-frequency signals and high-frequency signals.
  • the transmitting circuit 50 at least includes a first switch circuit 501 and a second switch circuit 502 , wherein the first switch circuit 501 is provided with a plurality of first antennas connected to medium and high frequency antennas.
  • the transmitting circuit 50 may also include a GSM LB PA and a GSM HB PA.
  • the output end of the GSM HB PA is connected to the first switch circuit 501, and the output end of the GSM LB PA is connected to the second switch circuit 502.
  • the transmitting circuit 50 is a transmitting module TxM, but what is different from the TxM shown in Figure 3 is that the transmitting circuit 50 uses LB SP7T and MHB SP10T switches to replace the SP16T switch, and
  • the transmitting circuit 50 and the TxM in Figure 3 are designed pin to pin, that is, the functions and pins of the TxM device used as the transmitting circuit 50 and the TxM device in Figure 3 are fully compatible and can be directly replaced without changing the circuit.
  • the dual transmitter frequency circuits in some areas that need to support more downlink CA combinations can be shared with the dual transmitter frequency circuits of TxM that only use one SP16T switch. This not only saves manpower and material resources, but also helps save costs. .
  • the HB PA in the radio frequency MMPA device 20 is powered by a first power supply.
  • the first power supply may include, for example, a Boost power supply.
  • the LB PA and MB PA in the radio frequency MMPA device 20 are powered by a second power supply.
  • the second power supply may include a power management chip (PMIC, Power Management IC) in the radio frequency transceiver 10 .
  • the MB PA device 30 is powered by a third power supply.
  • the third power supply may include a Buck power supply.
  • the dual transmit frequency circuit provided by the embodiment of the present application supports the EDNC combined dual transmit function of LB+HB, taking B20+N41 (TDD format) as an example:
  • the transmission path of the N41 frequency band signal the high-frequency signal output port HB_IN of the radio frequency transceiver 10 outputs the N41 signal, enters the high-frequency signal input port RFIN_H of the radio frequency MMPA device 20, and is amplified by the HB PA in the radio frequency MMPA device 20.
  • a first transceiver port output connected to four single-pole double-throw (SPDT) switches, as shown in Figure 5. In this embodiment, it is assumed that the output is from the first transceiver port HB4, and then filtered by the N41 filter 401 and then output from the first antenna.
  • the ANT1 transmits; at the same time, the transmission path of the B20 band signal: the low-frequency signal output port LB_IN of the radio frequency transceiver 10 outputs the B20 signal, enters the low-frequency signal input port RFIN_L of the radio frequency MMPA device 20, and is amplified by the LB PA in the radio frequency MMPA device 20 , is output from a low-frequency transmit port LB of the SP5T switch, as shown in Figure 5.
  • DPDT double pole double throw
  • the dual transmit frequency circuit provided by the embodiment of the present application supports the EDNC combined dual transmit function of LB+MB, taking B20+N1 as an example:
  • the transmission path of the N1 frequency band signal the intermediate frequency signal output port MB_IN0 of the radio frequency transceiver 10 outputs the N1 signal, enters the second intermediate frequency signal input port RFIN_M0 of the MB PA device 30, and is amplified by the MB PA device 30, from the MB PA device 30
  • One port output of the SPDT switch as shown in Figure 5.
  • the low-frequency signal output port LB_IN of the radio frequency transceiver 10 outputs the signal of B20, which enters the low-frequency signal input port RFIN_L of the radio frequency MMPA device 20. After being amplified by the LB PA in the radio frequency MMPA device 20, it is output from a low-frequency transmit port LB of the SP5T switch.
  • the output is from the low-frequency transmit port LB3, and then passes through the B20 duplexer 402 and then passes through the second switch circuit 502 in the transmit circuit 50, that is, the SP7T switch output, and finally passes through the DPDT switch from the second switch circuit 502.
  • Antenna ANT2 or the third antenna ANT3 transmits.
  • the dual transmit frequency circuit provided by the embodiment of the present application supports the EDNC combined dual transmit function of MB+MB, taking B3+N1 as an example:
  • the transmission path of the N1 frequency band signal the intermediate frequency signal output port MB_IN0 of the radio frequency transceiver 10 outputs the N1 signal, enters the second intermediate frequency signal input port RFIN_M0 of the MB PA device 30, and is amplified by the MB PA device 30 from the MB PA device 30
  • One port output of the SPDT switch as shown in Figure 5.
  • the intermediate frequency signal output port MB_IN of the radio frequency transceiver 10 outputs the signal of B3, enters the intermediate frequency signal input port RFIN_M of the radio frequency MMPA device 20, and is amplified by the MB PA in the radio frequency MMPA device 20, from a first intermediate frequency transmission port of the SP5T switch MB output, as shown in Figure 5.
  • the switch transmits from the second antenna ANT2 or the third antenna ANT3.
  • the transmission path of N1 and the transmission path of B3 can be interchanged, that is to say, N1 is processed by the radio frequency MMPA device 20, and B3 is processed by the MB PA device 30.
  • the dual transmit frequency circuit provided by the embodiment of the present application supports the EDNC combined dual transmit function of LB+HB, taking B20+N7 (FDD format) as an example:
  • the transmission path of the N7 band signal the high-frequency signal output port HB_IN of the radio frequency transceiver 10 outputs the signal of N7, enters the high-frequency signal input port RFIN_H of the radio frequency MMPA device 20, and is amplified by the HB PA in the radio frequency MMPA device 20.
  • a first transceiver port connected to four SPDT switches outputs, as shown in Figure 5.
  • the output is from the first transceiver port HB3, and then passes through the N7 duplexer 402 and then passes through the first switch in the transmit circuit 50 Circuit 501 is the SP10T switch output, and is finally transmitted from the second antenna ANT2 or the third antenna ANT3 through the DPDT switch; at the same time, the transmission path of the B20 band signal: the low-frequency signal output port LB_IN of the radio frequency transceiver 10 outputs the B20 signal and enters the radio frequency MMPA
  • the low-frequency signal input port RFIN_L of the device 20 is amplified by the LB PA in the radio frequency MMPA device 20 and then output from a low-frequency transmit port LB of the SP5T switch, as shown in Figure 5.
  • the dual transmit frequency circuit provided by the embodiment of the present application supports the EDNC combined dual transmit function of MB+HB, taking B1+N41 as an example:
  • the transmission path of the N41 frequency band signal the high-frequency signal output port HB_IN of the radio frequency transceiver 10 outputs the N41 signal, enters the high-frequency signal input port RFIN_H of the radio frequency MMPA device 20, and is amplified by the HB PA in the radio frequency MMPA device 20.
  • a first transceiver port connected to four SPDT switches outputs, as shown in Figure 5.
  • One port output of the SPDT switch is shown in Figure 5. In this embodiment, it is assumed that it is output from the second intermediate frequency transmission port MB02, and then transmitted from the fourth antenna ANT4 after passing through the B1 duplexer.
  • the dual transmit frequency circuit uses a radio frequency MMPA device and an MB PA device to realize the ENDC functions of LB+MB, MB+MB, LB+HB and MB+HB, and combines one
  • the MB PA device replaces one RF MMPA device among the two RF MMPA devices in related technologies, reducing the electrical connections of peripheral circuits, saving the area occupied by the dual-radio frequency circuit on the motherboard of the electronic device where it is located, and reducing costs at the same time.
  • the functions and pins of the TxM device used as the transmitting circuit 50 are fully compatible with the TxM devices in related technologies, and can be directly replaced without changing the circuit. It is realized that the dual transmitter frequency circuits in some areas that need to support more downlink CA combinations are shared with the dual transmitter frequency circuits of TxM that only use one SP16T switch. This not only saves manpower and material resources, but also helps save costs.
  • the operating voltages of the MB PA and HB PA of the radio frequency MMPA device 20 in the dual radio frequency circuit provided by the embodiment of the present application are reduced to 3.4V.
  • the The HB PA can be powered by a Buck power supply, as shown in Figure 6.
  • the HB PA in the radio frequency MMPA device 20 is powered by the first Buck power supply, and the LB PA and MB PA in the radio frequency MMPA device 20 use the radio frequency transceiver 10 PMIC power supply.
  • the MB PA device 30 is powered by the second Buck power supply. In this way, while realizing the transmission of any two ENDC combinations between the LB signal, the MB signal and the HB signal, it also saves the overhead caused by the power supply and further reduces the hardware cost.
  • the MB PA device 30 in Figure 5 can be integrated into the transmit circuit 50 to become a new TxM. Only the new TxM It has the same size as the TxM as the transmitting circuit 50 in Figure 5 and is completely Pin to Pin. In this way, while realizing the transmission of any pair of ENDC combinations between LB signals, MB signals and HB signals, it also further saves the overhead of an MB PA, thereby further reducing hardware costs.
  • Embodiments of the present application also provide an electronic device, which is provided with the dual radio frequency circuit described in any of the above embodiments.
  • the cost is reduced and the device performance is improved.
  • the degree of integration reduces the area occupied by each device in the dual transmit frequency circuit on the motherboard, and enables the transmission of any pair of ENDC combinations between LB signal, MB signal and HB signal.
  • the electronic devices provided by the embodiments of the present application are various electronic devices with wireless communication functions, including but not limited to: mobile phones, tablet computers, wearable devices, vehicle-mounted devices, augmented reality (AR) Reality)/virtual reality (VR, Virtual Reality) equipment, notebook computers, ultra-mobile personal computers (UMPC, Ultra-Mobile Personal Computer), netbooks, personal digital assistants (PDA, Personal Digital Assistant), etc.
  • AR Augment reality
  • VR Virtual Reality
  • notebook computers notebook computers
  • ultra-mobile personal computers Ultra-Mobile Personal Computer
  • netbooks personal digital assistants
  • PDA Personal Digital Assistant

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Abstract

La présente demande concerne un circuit radiofréquence à double transmission et un dispositif électronique. Le circuit radiofréquence à double transmission comprend un émetteur-récepteur radiofréquence, un dispositif amplificateur de puissance multibande multimode (MMPA) radiofréquence, un dispositif amplificateur de puissance à bande moyenne (MB PA), un circuit de filtrage et une antenne ; le dispositif MMPA radiofréquence est utilisé pour recevoir un signal radiofréquence de l'émetteur-récepteur radiofréquence, effectuer une amplification de puissance sur le signal radiofréquence reçu, prendre en charge la transmission sélective d'une pluralité de signaux à bande haute, la transmission sélective d'une pluralité de signaux MB et la transmission sélective d'une pluralité de signaux à bande basse, et prendre en charge une réception sélective d'une pluralité de signaux à bande haute ; le dispositif MB PA est utilisé pour recevoir un signal MB de l'émetteur-récepteur radiofréquence, effectuer une amplification de puissance sur le signal MB reçu et prendre en charge la transmission sélective d'une pluralité de signaux MB ; le circuit de filtrage est utilisé pour recevoir des signaux radiofréquence émis par le dispositif MMPA radiofréquence et le dispositif MB PA, effectuer un traitement de filtrage sur un signal radiofréquence d'une première norme et effectuer un traitement d'émission-réception et un traitement de filtrage simultanés sur un signal radiofréquence d'une seconde norme ; les signaux radiofréquence filtrés sont fournis à l'antenne pour la transmission afin de réaliser la transmission d'une combinaison ENDC de deux signaux quelconques parmi un signal à bande basse, un signal MB et un signal à bande haute, un MB PA et un amplificateur de puissance à bande basse (LB PA) dans le dispositif MMPA radiofréquence étant alimentés par différentes alimentations électriques du dispositif MB PA. Selon le circuit radiofréquence à double transmission fourni par la présente demande, la transmission d'une combinaison ENDC de deux signaux quelconques parmi un signal LB, un signal MB et un signal HB peut être réalisée sans nécessiter deux dispositifs MMPA, ce qui permet de réduire la zone occupée de la carte mère d'un dispositif électronique où se trouve le circuit radiofréquence à double transmission, ainsi que de réduire également les coûts. De plus, un circuit radiofréquence à double transmission dans certaines zones devant prendre en charge davantage de combinaisons CA en liaison descendante et un circuit radiofréquence à double transmission de TXM utilisant indépendamment un commutateur SP16T partagent un circuit, ce qui permet d'économiser de la main d'œuvre et des ressources matérielles.
PCT/CN2022/140164 2022-04-12 2022-12-19 Circuit radiofréquence à double transmission et dispositif électronique WO2023197662A1 (fr)

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CN202210383200.4A CN114826318A (zh) 2022-04-12 2022-04-12 一种双发射频电路及电子设备
CN202210383200.4 2022-04-12

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CN114826318A (zh) * 2022-04-12 2022-07-29 Oppo广东移动通信有限公司 一种双发射频电路及电子设备
CN117318751B (zh) * 2023-11-24 2024-04-16 荣耀终端有限公司 通信方法和电子设备

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