WO2020155817A1 - Circuit radiofréquence avec agrégation de porteuses de liaison descendante, dispositif d'antenne, et appareil électronique - Google Patents

Circuit radiofréquence avec agrégation de porteuses de liaison descendante, dispositif d'antenne, et appareil électronique Download PDF

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Publication number
WO2020155817A1
WO2020155817A1 PCT/CN2019/120970 CN2019120970W WO2020155817A1 WO 2020155817 A1 WO2020155817 A1 WO 2020155817A1 CN 2019120970 W CN2019120970 W CN 2019120970W WO 2020155817 A1 WO2020155817 A1 WO 2020155817A1
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WIPO (PCT)
Prior art keywords
switch
frequency band
filtering
module
phase shifting
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Application number
PCT/CN2019/120970
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English (en)
Chinese (zh)
Inventor
潘灵建
李晶晶
Original Assignee
惠州Tcl移动通信有限公司
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Publication of WO2020155817A1 publication Critical patent/WO2020155817A1/fr

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Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers

Definitions

  • This application relates to the field of wireless communication technology, and in particular to a downlink carrier aggregation radio frequency circuit, antenna device and electronic equipment.
  • LTE carrier aggregation for mobile portable devices
  • DLCA downlink Carrier combination
  • the frequency band below 1GHz such as Band5/8/12/B28, etc.
  • the frequency band of 1GHZ ⁇ 2.2GHz such as B1/2/3/4/34/39, etc.
  • intermediate frequency above 2.3GHz (Such as B30/7/38/40, etc.) is called high frequency.
  • a quadruplexer device such as a 2A-4A quadruplexer
  • the cost of the quadruplexer is high, resulting in high cost of electronic equipment.
  • the embodiment of the application provides a downlink carrier aggregation radio frequency circuit, antenna device, and electronic equipment.
  • the channel selection between the switch module control and the filtering phase shift module can realize downlink carrier aggregation of signals in two frequency bands, which can greatly reduce production. cost.
  • an embodiment of the present application provides a downlink carrier aggregation radio frequency circuit, which is connected to an antenna and includes a switch module, and a first filter phase shift module and a second filter phase shift module connected to the switch module, the switch module One end of the switch module includes two uplink signal ends and two downlink signal ends.
  • the other end of the switch module is connected to the antenna; when working in the non-carrier aggregation mode, the switch module controls the first filtering phase shift module or the second filtering
  • the uplink signal end and the downlink signal end connected by the phase shift module are connected to send and receive the uplink signal of the first frequency band and the downlink signal of the first frequency band, or send and receive the uplink signal of the second frequency band and the downlink signal of the second frequency band; when working in the downlink carrier aggregation mode ,
  • the switch module controls the two downstream signal terminals to be turned on, and controls the upstream signal terminal connected to the first filter phase shift module or the second filter phase shift module to conduct, so as to realize the first frequency band upstream signal or the second frequency upstream signal Signal transmission, and carrier aggregation reception of downlink signals in the first frequency band and downlink signals in the second frequency band.
  • the first filtering phase shifting module includes a first filtering phase shifting unit and a second filtering phase shifting unit, and the first filtering phase shifting unit is connected to the uplink signal end of the switch module and is used to transmit the first frequency band
  • the uplink signal is subjected to filtering and phase shift processing;
  • the second filtering and phase shifting unit is connected to the downlink signal end of the switch module, and is used to perform filtering and phase shift processing on the received downlink signal of the first frequency band.
  • the second filtering phase shifting module includes a third filtering phase shifting unit and a fourth filtering phase shifting unit, and the third filtering phase shifting unit is connected to the uplink signal end of the switch module and is used for transmitting the second frequency band.
  • the uplink signal is subjected to filtering and phase shift processing; the second filtering and phase shifting unit is connected to the downlink signal end of the switch module, and is used to perform filtering and phase shift processing on the received second frequency band downlink signal.
  • the switch module includes a first switch, a second switch, a third switch, a fourth switch, a fifth switch, and a sixth switch; one end of the first switch is connected to the first filter phase shift unit and the third switch One end and one end of the sixth switch, the other end of the first switch is connected to the antenna; one end of the second switch is connected to the third filter phase shifting unit, one end of the fourth switch and one end of the fifth switch, the second The other end of the switch is connected to the antenna; the other end of the third switch and the other end of the fourth switch are both connected to the second filtering phase shift unit; the other end of the fifth switch and the other end of the sixth switch are both connected to the fourth Filter phase shift unit.
  • the first filtering phase shifting unit and the second filtering phase shifting unit respectively send the first frequency band uplink signal and receive the first frequency band downlink signal; when the second switch When the and the sixth switch are closed, the second frequency band uplink signal and the second frequency band downlink signal are respectively sent through the third filtering phase shift unit and the fourth filtering phase shift unit.
  • the first frequency filtering and phase shifting unit sends the uplink signal of the first frequency band
  • the second filtering phase shifting unit and the fourth filtering phase shifting unit implement downlink carrier aggregation Diversity reception of the downlink signal in the first frequency band and the downlink signal in the second frequency band
  • the second switch, the fourth switch and the fifth switch are closed, the second frequency band uplink signal is sent through the third filtering phase shift unit, and passes through the second filtering
  • the phase shifting unit and the fourth filtering phase shifting unit implement diversity reception of the downlink signal in the first frequency band and the downlink signal in the second frequency band during downlink carrier aggregation.
  • the first filter phase shift unit includes a first surface acoustic wave filter and a first phase shifter
  • the second filter phase shift unit includes a second surface acoustic wave filter and a second phase shifter
  • the first surface acoustic wave filter is connected to one end of the first switch through the first phase shifter
  • the second surface acoustic wave filter is connected to the other end of the third switch and the fourth switch through the second phase shifter On the other end.
  • the third filter phase shift unit includes a third surface acoustic wave filter and a third phase shifter
  • the fourth filter phase shift unit includes a fourth surface acoustic wave filter and a fourth phase shifter
  • the third surface acoustic wave filter is connected to one end of the second switch through the third phase shifter
  • the fourth surface acoustic wave filter is connected to the other end of the fifth switch and the sixth switch through the fourth phase shifter On the other end.
  • an embodiment of the present application also provides an antenna device, which includes a downlink carrier aggregation radio frequency circuit, and the downlink carrier aggregation radio frequency circuit includes:
  • the first filtering phase shifting module includes a first filtering phase shifting unit and a second filtering phase shifting unit, and the first filtering phase shifting unit is connected to the uplink signal end of the switch module and is used to transmit the first frequency band
  • the uplink signal is subjected to filtering and phase shift processing;
  • the second filtering and phase shifting unit is connected to the downlink signal end of the switch module, and is used to perform filtering and phase shift processing on the received downlink signal of the first frequency band.
  • the second filtering phase shifting module includes a third filtering phase shifting unit and a fourth filtering phase shifting unit, and the third filtering phase shifting unit is connected to the uplink signal end of the switch module and is used for transmitting the second frequency band.
  • the uplink signal is subjected to filtering and phase shift processing; the second filtering and phase shifting unit is connected to the downlink signal end of the switch module, and is used to perform filtering and phase shift processing on the received second frequency band downlink signal.
  • the switch module includes a first switch, a second switch, a third switch, a fourth switch, a fifth switch, and a sixth switch; one end of the first switch is connected to the first filter phase shift unit and the third switch One end and one end of the sixth switch, the other end of the first switch is connected to the antenna; one end of the second switch is connected to the third filter phase shifting unit, one end of the fourth switch and one end of the fifth switch, the second The other end of the switch is connected to the antenna; the other end of the third switch and the other end of the fourth switch are both connected to the second filtering phase shift unit; the other end of the fifth switch and the other end of the sixth switch are both connected to the fourth Filter phase shift unit.
  • the first filtering phase shifting unit and the second filtering phase shifting unit respectively send the first frequency band uplink signal and receive the first frequency band downlink signal; when the second switch When the and the sixth switch are closed, the second frequency band uplink signal and the second frequency band downlink signal are respectively sent through the third filtering phase shift unit and the fourth filtering phase shift unit.
  • the first frequency filtering and phase shifting unit sends the uplink signal of the first frequency band
  • the second filtering phase shifting unit and the fourth filtering phase shifting unit implement downlink carrier aggregation Diversity reception of the downlink signal in the first frequency band and the downlink signal in the second frequency band
  • the second switch, the fourth switch and the fifth switch are closed, the second frequency band uplink signal is sent through the third filtering phase shift unit, and passes through the second filtering
  • the phase shifting unit and the fourth filtering phase shifting unit implement diversity reception of the downlink signal in the first frequency band and the downlink signal in the second frequency band during downlink carrier aggregation.
  • the first filter phase shift unit includes a first surface acoustic wave filter and a first phase shifter
  • the second filter phase shift unit includes a second surface acoustic wave filter and a second phase shifter
  • the first surface acoustic wave filter is connected to one end of the first switch through the first phase shifter
  • the second surface acoustic wave filter is connected to the other end of the third switch and the fourth switch through the second phase shifter On the other end.
  • the third filter phase shift unit includes a third surface acoustic wave filter and a third phase shifter
  • the fourth filter phase shift unit includes a fourth surface acoustic wave filter and a fourth phase shifter
  • the third surface acoustic wave filter is connected to one end of the second switch through the third phase shifter
  • the fourth surface acoustic wave filter is connected to the other end of the fifth switch and the sixth switch through the fourth phase shifter On the other end.
  • an embodiment of the present application further provides an electronic device, including a housing, a PCB board is arranged in the housing, a downlink carrier aggregation radio frequency circuit is arranged on the PCB board, and the downlink carrier aggregation radio frequency circuit includes:
  • the first filtering phase shifting unit is connected to the uplink signal end of the switch module and is used to transmit the uplink signal of the first frequency band.
  • the second filtering phase shifting unit is connected to the downlink signal end of the switch module, and is used to perform filtering and phase shifting processing on the received first frequency band downlink signal;
  • the switch module includes a first switch, a second switch A switch, a third switch, a fourth switch, a fifth switch, and a sixth switch; one end of the first switch is connected to the first filtering phase shifting unit, one end of the third switch, and one end of the sixth switch, the first switch The other end of the second switch is connected to the antenna; one end of the second switch is connected to the third filter phase shifting unit, one end of the fourth switch and one end of the fifth switch, and the other end of the second switch is connected to the antenna; The other end of the other end and the other end of the fourth switch are both connected to the second filtering phase shifting unit; the other end of the fifth switch and the other end of the sixth switch
  • the first filtering phase shift unit includes a first surface acoustic wave filter and a first phase shifter
  • the second filtering phase shift unit includes a second surface acoustic wave filter and a second phase shifter; the first surface acoustic wave filter is connected to one end of the first switch through the first phase shifter; the second The surface acoustic wave filter is connected to the other end of the third switch and the other end of the fourth switch through the second phase shifter.
  • the first phase shifter sets the first preset value to pass the uplink signal of the first frequency band
  • the second phase shifter sets the second preset value to make the first frequency band downlink The signal passed.
  • the first filtering phase shifting unit and the second filtering phase shifting unit respectively send the first frequency band uplink signal and receive the first frequency band downlink signal; when the second switch When the and the sixth switch are closed, the second frequency band uplink signal and the second frequency band downlink signal are respectively sent through the third filtering phase shift unit and the fourth filtering phase shift unit.
  • the first frequency filtering and phase shifting unit sends the uplink signal of the first frequency band
  • the second filtering phase shifting unit and the fourth filtering phase shifting unit implement downlink carrier aggregation Diversity reception of the downlink signal in the first frequency band and the downlink signal in the second frequency band
  • the second switch, the fourth switch and the fifth switch are closed, the second frequency band uplink signal is sent through the third filtering phase shift unit, and passes through the second filtering
  • the phase shifting unit and the fourth filtering phase shifting unit implement diversity reception of the downlink signal in the first frequency band and the downlink signal in the second frequency band during downlink carrier aggregation.
  • the third filter phase shift unit includes a third surface acoustic wave filter and a third phase shifter
  • the fourth filter phase shift unit includes a fourth surface acoustic wave filter and a fourth phase shifter
  • the third surface acoustic wave filter is connected to one end of the second switch through the third phase shifter
  • the fourth surface acoustic wave filter is connected to the other end of the fifth switch and the sixth switch through the fourth phase shifter On the other end.
  • the present application provides a downlink carrier aggregation radio frequency circuit, an antenna device, and electronic equipment.
  • the downlink carrier aggregation radio frequency circuit is connected to an antenna and includes a switch module, and a first filter phase shift module and a second filter phase shift module connected to the switch module Module, one end of the switch module includes two uplink signal ends and two downlink signal ends, and the other end of the switch module is connected to an antenna; when working in a non-carrier aggregation mode, the switch module controls and first filter shift The uplink signal end and the downlink signal end connected by the phase module or the second filtering and phase shifting module are connected to send and receive the uplink signal of the first frequency band and the downlink signal of the first frequency band, or the uplink signal of the second frequency band and the downlink signal of the second frequency band; In the downlink carrier aggregation mode, the switch module controls the two downlink signal ends to be turned on, and controls the uplink signal end connected to the first filtering phase shifting module or the second filtering phase shifting module to conduct,
  • Fig. 1 is a structural block diagram of a downlink carrier aggregation radio frequency circuit provided by the present application.
  • Fig. 2 is a circuit schematic diagram of the downlink carrier aggregation radio frequency circuit provided by the present application.
  • the purpose of this application is to provide a downlink carrier aggregation radio frequency circuit, antenna device and electronic equipment, without the use of a quadruplexer, and control and filtering by a switch module
  • the channel selection between phase-shifting modules can realize downlink carrier aggregation of signals in two frequency bands, which can greatly reduce production costs.
  • FIG. 1 is a structural block diagram of a downlink carrier aggregation radio frequency circuit provided in this application.
  • the downlink carrier aggregation radio frequency circuit provided by the present application is connected to the antenna 10, and includes a switch module 20, and a first filter phase shift module 31 and a second filter phase shift module 32 connected to the switch module 20, wherein the switch module 20
  • the first end includes two upstream signal terminals P1 and P3, and two downstream signal terminals P2 and P4.
  • the first filtering phase shifting module 31 and the second filtering phase shifting module 32 respectively pass through an upstream signal terminal and a downstream signal terminal.
  • the signal end is connected to the switch module 20, the other end of the switch module 20 is connected to the antenna 10, the first filtering phase shift module 31 allows the first frequency band uplink signal and the first frequency band downlink signal to pass through, and the second filtering phase shift The module 32 allows the uplink signal of the second frequency band and the downlink signal of the second frequency band to pass.
  • the switch module 20 controls the uplink connected to the first filtering phase shifting module 31 or the second filtering phase shifting module 32
  • the signal end and the downlink signal end are connected to send and receive uplink signals in the first frequency band and downlink signals in the first frequency band, or send and receive uplink signals in the second frequency band and downlink signals in the second frequency band, that is, when carrier aggregation is not required, control P1 and P2 or P3 and P4 are turned on, so that the first filter phase shifting module 31 or the second filter phase shifting module 32 is currently connected to the circuit to start working.
  • the uplink signal of the first frequency band undergoes the first filter phase shift
  • the downlink signal of the first frequency band is received by the antenna 10 and then output to the first filtering and phase shifting module 31 through the switch module 20, and then output to the radio frequency transceiver to realize a single frequency band signal transmission and reception. Realize communication in this frequency band.
  • the switch module 20 controls the two downlink signal terminals to be turned on, and controls the uplink signal terminal connected to the first filtering phase shift module 31 or the second filtering phase shift module 32 to conduct. Realize the transmission of uplink signals in the first frequency band or the uplink signals in the second frequency, and the carrier aggregation reception of the downlink signals in the first frequency band and the downlink signals in the second frequency band.
  • control the two downlink signal terminals P2 and P4 when working in the downlink carrier aggregation mode, control the two downlink signal terminals P2 and P4 to be turned on, and control the uplink signal connected to the first filtering phase shift module 31 or the second filtering phase shift module 32 according to the frequency band of the current main carrier
  • control P1 if the current main carrier frequency band is the first frequency band, control P1 to be turned on; if the current main carrier frequency band is the second frequency band, control P3 to be turned on.
  • Ports P1, P2, and P4 are turned on, the uplink signal of the first frequency band passes through the first filtering and phase shifting module 31 and then reaches the antenna 10 through the switch module 20, and the downlink signal of the first frequency band and the downlink signal of the second frequency of carrier aggregation are received via the antenna 10 Then, the P2 and P4 terminals of the switch module 20 are output to the first filtering phase shifting module 31 and the second filtering phase shifting module 32 respectively to realize the diversity reception of the downlink signal of the first frequency band and the downlink signal of the second frequency during downlink carrier aggregation.
  • This application does not need to use a quadruplexer.
  • the switch module 20 control and the filtering and phase shifting module the downlink carrier aggregation of the two frequency band signals can be realized, and the communication of a single frequency band is not affected, which can greatly reduce production. cost.
  • the first filter phase shift module 31 includes a first filter phase shift unit 311 and a second filter phase shift unit 312, and the second filter phase shift module 32 includes a third filter phase shift unit 321 and a fourth filter phase shift unit.
  • the first filtering phase shifting unit 311 is connected to the uplink signal end of the switch module 20, and is used to perform filtering and phase shifting processing on the transmitted uplink signal of the first frequency band; the second filtering phase shifting unit 312 and the switch module
  • the downlink signal end of 20 is connected to perform filtering and phase shifting processing on the received downlink signal of the first frequency band;
  • the third filtering and phase shifting unit 321 is connected to the uplink signal end of the switch module 20 and is used for transmitting the second frequency band
  • the uplink signal is subjected to filtering and phase shifting processing;
  • the second filtering and phase shifting unit 312 is connected to the downlink signal end of the switch module 20, and is configured to perform filtering and phase shifting processing on the received second frequency band downlink signal.
  • the uplink signal and the downlink signal of two different frequency bands are filtered and phase shifted through four filter phase shift units, so that each filter phase shift unit can only pass the preset Frequency signals, for example, the first filtering and phase shifting unit 311 can pass the first frequency band uplink signal after filtering and phase shifting.
  • the other three filtering phase shifting units are the same , So that each filter phase shift unit has a specific frequency channel, improving the accuracy of carrier aggregation signal transmission.
  • the switch module 20 includes a first switch S1, a second switch S2, a third switch S3, a fourth switch S4, a fifth switch S5, and a sixth switch S6; one end of the first switch S1 Connect the first filter phase shifting unit 311, one end of the third switch S3 and one end of the sixth switch S6, the other end of the first switch S1 is connected to the antenna 10; one end of the second switch S2 is connected to the third filter phase shifter
  • the unit 321, one end of the fourth switch S4 and one end of the fifth switch S5, the other end of the second switch S2 is connected to the antenna 10; the other end of the third switch S3 and the other end of the fourth switch S4 are both connected to the The second filter phase shift unit 312; the other end of the fifth switch S5 and the other end of the sixth switch S6 are both connected to the fourth filter phase shift unit 322.
  • the first filter phase shift unit 311 includes a first surface acoustic wave filter SAW1 and a first phase shifter A1
  • the second filter phase shift unit 312 includes a second surface acoustic wave filter SAW2 and a second Phase shifter A2
  • the first surface acoustic wave filter SAW1 is connected to one end of the first switch S1 through the first phase shifter A1
  • the second surface acoustic wave filter SAW2 is passed through the second phase shifter A2 is connected to the other end of the third switch S3 and the other end of the fourth switch S4
  • the third filtering phase shift unit 321 includes a third surface acoustic wave filter SAW3 and a third phase shifter A3,
  • the phase unit 322 includes a fourth surface acoustic wave filter SAW4 and a fourth phase shifter A4; the third surface acoustic wave filter SAW3 is connected to one end of the second switch S2 through the third phase shifter A3;
  • the first filtering phase shifting unit 311 and the second filtering phase shifting unit 312 respectively send the first One frequency band uplink signal and receiving the first frequency band downlink signal; if the second switch S2 and the sixth switch S6 are controlled to be closed, the third filtering phase shift unit 321 and the fourth filtering phase shift unit 322 respectively send the second frequency band uplink Signal and receive the downlink signal of the second frequency band to realize communication in a single frequency band.
  • the first filtering phase shift unit 311 sends the uplink signal of the first frequency band, and passes the second filtering
  • the phase shifting unit 312 and the fourth filtering phase shifting unit 322 realize diversity reception of the downlink signal of the first frequency band and the downlink signal of the second frequency band during downlink carrier aggregation; if the real number second switch S2, the fourth switch S4 and the fifth switch S5 are controlled to be closed ,
  • the second frequency band uplink signal is sent through the third filtering phase shift unit 321, and the first frequency band downlink signal and the second frequency band downlink signal during downlink carrier aggregation are realized through the second filtering phase shift unit 312 and the fourth filtering phase shift unit 322
  • Diversity reception realizes downlink carrier aggregation with different main carrier frequency bands.
  • the first surface acoustic wave filter SAW1 and the second surface acoustic wave filter SAW2 respectively filter the first frequency band uplink signal and the first frequency band downlink signal, wherein the first phase shift
  • the first preset value is set by the A1 to make the first frequency band uplink signal, that is, the B2 TX signal (frequency 1850 ⁇ 1910MHz) to pass, and the signal other than B2 TX is cut off.
  • the second phase shifter A2 sets the second preset value to make the first The downstream signal of a frequency band, that is, the B2 RX signal (frequency 1930 ⁇ 1990MHz) passes, and the signals other than B2 RX are cut off.
  • the SAW4 is similar to the fourth phase shifter A4.
  • the first phase shifter A1 cuts off the first frequency band uplink signal B2 TX signal
  • the first frequency band Downlink signal B2 RX signal will not pass through the first phase shifter A1, only pass through the third switch S3, then pass through the second phase shifter A2 and the second surface acoustic wave filter SAW2 before entering the wireless transceiver, if only B4 frequency band is needed
  • B4 frequency band is SCC (secondary carrier component is the secondary carrier, only including RX signal) as an example, at this time control the first switch S1, the third switch S3 and the sixth switch S6 Just close, the first frequency band uplink signal B2 TX signal passes through the first surface acoustic wave filter SAW1 and the first phase shifter A1, because the second phase shifter A2 cuts off signals other than the first frequency band downlink signal B2 RX, the fourth The phase shifter A4 cuts off signals other than the second frequency band downlink signal B4 RX, so the first frequency band uplink signal B2 TX signal will not pass through the third switch S3 and the sixth switch S6, but will only reach the antenna 10 through the first switch S1; 10 Receive the first frequency band downlink signal B2 RX and the second frequency band downlink signal B4 RX combined by the carrier.
  • PCC primary carrier component is the primary carrier, including TX signal and RX signal
  • SCC secondary carrier component is the secondary carrier, only including RX signal
  • the first frequency band downlink signal passes through the first switch S1 because the first phase shifter A1 cuts off the first frequency band uplink signal B2 TX Signal, the fourth phase shifter A4 cuts off signals other than the second frequency band downlink signal B4 RX, so the first frequency band downlink signal B2 RX signal will not pass through the first phase shifter A1 and the sixth switch S6, only the third switch S3 then passes through the second phase shifter A2 and the second surface acoustic wave filter SAW2 and then enters the wireless transceiver; the second frequency band downlink signal B4 RX signal passes through the first switch S1, because the first phase shifter A1 cuts off the first frequency band uplink For signals other than signal B2 TX, the second phase shifter A2 cuts off signals other than the first frequency band downlink signal B2 RX, so the second frequency band downlink signal B4 RX signal will not pass through the first phase shifter A1 and the third switch S3, only After the sixth, the fourth phase shifter A4 and the fourth surface acoustic wave filter
  • the second switch S2 If it is necessary to achieve the 2A-4A downlink carrier aggregation function with the B4 frequency band as the main carrier and the B2 frequency band as the auxiliary carrier, only the second switch S2, the fourth switch S4 and the fifth switch S5 need to be controlled to close.
  • the carrier aggregation signal transmission process of other frequency bands such as the B1 frequency band and the B3 frequency band is similar, and it can be realized only by adjusting the signal frequency range allowed by each filtering phase shift unit.
  • This application uses a combination of a surface acoustic wave filter, a phase shifter, and multiple switches to implement downlink carrier aggregation in different frequency bands.
  • a surface acoustic wave filter Compared with the existing way of implementing carrier aggregation through a quadruple, because the single surface acoustic wave
  • the insertion loss of the filter and the phase shifter is smaller than the insertion loss of the quadruple, which improves the loss, which can also improve the power consumption of the device, the heating of the device, and the battery life.
  • the surface acoustic wave filter and the phase shifter The cost is much smaller than the cost of the quadruplexer, which improves the manufacturing cost of the equipment and enhances its competitive advantage.
  • the present application also provides an antenna device, which includes a downlink carrier aggregation radio frequency circuit including:
  • the first filtering phase shifting module includes a first filtering phase shifting unit and a second filtering phase shifting unit, and the first filtering phase shifting unit is connected to the uplink signal end of the switch module and is used to transmit the first frequency band
  • the uplink signal is subjected to filtering and phase shift processing;
  • the second filtering and phase shifting unit is connected to the downlink signal end of the switch module, and is used to perform filtering and phase shift processing on the received downlink signal of the first frequency band.
  • the second filtering phase shifting module includes a third filtering phase shifting unit and a fourth filtering phase shifting unit, and the third filtering phase shifting unit is connected to the uplink signal end of the switch module and is used for transmitting the second frequency band.
  • the uplink signal is subjected to filtering and phase shift processing; the second filtering and phase shifting unit is connected to the downlink signal end of the switch module, and is used to perform filtering and phase shift processing on the received second frequency band downlink signal.
  • the switch module includes a first switch, a second switch, a third switch, a fourth switch, a fifth switch, and a sixth switch; one end of the first switch is connected to the first filter phase shift unit and the third switch One end and one end of the sixth switch, the other end of the first switch is connected to the antenna; one end of the second switch is connected to the third filter phase shifting unit, one end of the fourth switch and one end of the fifth switch, the second The other end of the switch is connected to the antenna; the other end of the third switch and the other end of the fourth switch are both connected to the second filtering phase shift unit; the other end of the fifth switch and the other end of the sixth switch are both connected to the fourth Filter phase shift unit.
  • the first filtering phase shifting unit and the second filtering phase shifting unit respectively send the first frequency band uplink signal and receive the first frequency band downlink signal; when the second switch When the and the sixth switch are closed, the second frequency band uplink signal and the second frequency band downlink signal are respectively sent through the third filtering phase shift unit and the fourth filtering phase shift unit.
  • the first frequency filtering and phase shifting unit sends the uplink signal of the first frequency band
  • the second filtering phase shifting unit and the fourth filtering phase shifting unit implement downlink carrier aggregation Diversity reception of the downlink signal in the first frequency band and the downlink signal in the second frequency band
  • the second switch, the fourth switch and the fifth switch are closed, the second frequency band uplink signal is sent through the third filtering phase shift unit, and passes through the second filtering
  • the phase shifting unit and the fourth filtering phase shifting unit implement diversity reception of the downlink signal in the first frequency band and the downlink signal in the second frequency band during downlink carrier aggregation.
  • the first filter phase shift unit includes a first surface acoustic wave filter and a first phase shifter
  • the second filter phase shift unit includes a second surface acoustic wave filter and a second phase shifter
  • the first surface acoustic wave filter is connected to one end of the first switch through the first phase shifter
  • the second surface acoustic wave filter is connected to the other end of the third switch and the fourth switch through the second phase shifter On the other end.
  • the third filter phase shift unit includes a third surface acoustic wave filter and a third phase shifter
  • the fourth filter phase shift unit includes a fourth surface acoustic wave filter and a fourth phase shifter
  • the third surface acoustic wave filter is connected to one end of the second switch through the third phase shifter
  • the fourth surface acoustic wave filter is connected to the other end of the fifth switch and the sixth switch through the fourth phase shifter On the other end. Since the downlink carrier aggregation radio frequency circuit has been described in detail above, it will not be detailed here.
  • the present application also provides an electronic device, including a housing, a PCB board is arranged in the housing, and a downlink carrier aggregation radio frequency circuit is arranged on the PCB board, and the downlink carrier aggregation radio frequency circuit includes:
  • the first filtering phase shifting unit is connected to the uplink signal end of the switch module and is used to transmit the uplink signal of the first frequency band.
  • the second filtering phase shifting unit is connected to the downlink signal end of the switch module, and is used to perform filtering and phase shifting processing on the received first frequency band downlink signal;
  • the switch module includes a first switch, a second switch A switch, a third switch, a fourth switch, a fifth switch, and a sixth switch; one end of the first switch is connected to the first filtering phase shifting unit, one end of the third switch, and one end of the sixth switch, the first switch The other end of the second switch is connected to the antenna; one end of the second switch is connected to the third filter phase shifting unit, one end of the fourth switch and one end of the fifth switch, and the other end of the second switch is connected to the antenna; The other end of the other end and the other end of the fourth switch are both connected to the second filtering phase shifting unit; the other end of the fifth switch and the other end of the sixth switch
  • the first filtering phase shift unit includes a first surface acoustic wave filter and a first phase shifter
  • the second filtering phase shift unit includes a second surface acoustic wave filter and a second phase shifter; the first surface acoustic wave filter is connected to one end of the first switch through the first phase shifter; the second The surface acoustic wave filter is connected to the other end of the third switch and the other end of the fourth switch through the second phase shifter.
  • the first phase shifter sets the first preset value to pass the uplink signal of the first frequency band
  • the second phase shifter sets the second preset value to make the first frequency band downlink The signal passed.
  • the first filtering phase shifting unit and the second filtering phase shifting unit respectively send the first frequency band uplink signal and receive the first frequency band downlink signal; when the second switch When the and the sixth switch are closed, the second frequency band uplink signal and the second frequency band downlink signal are respectively sent through the third filtering phase shift unit and the fourth filtering phase shift unit.
  • the first frequency filtering and phase shifting unit sends the uplink signal of the first frequency band
  • the second filtering phase shifting unit and the fourth filtering phase shifting unit implement downlink carrier aggregation Diversity reception of the downlink signal in the first frequency band and the downlink signal in the second frequency band
  • the second switch, the fourth switch and the fifth switch are closed, the second frequency band uplink signal is sent through the third filtering phase shift unit, and passes through the second filtering
  • the phase shifting unit and the fourth filtering phase shifting unit implement diversity reception of the downlink signal in the first frequency band and the downlink signal in the second frequency band during downlink carrier aggregation.
  • the third filter phase shift unit includes a third surface acoustic wave filter and a third phase shifter
  • the fourth filter phase shift unit includes a fourth surface acoustic wave filter and a fourth phase shifter
  • the third surface acoustic wave filter is connected to one end of the second switch through the third phase shifter
  • the fourth surface acoustic wave filter is connected to the other end of the fifth switch and the sixth switch through the fourth phase shifter On the other end.
  • the downlink carrier aggregation radio frequency circuit is connected to the antenna and includes a switch module, and a first filter phase shift module connected to the switch module and The second filter phase shift module, one end of the switch module includes two uplink signal ends and two downlink signal ends, the other end of the switch module is connected to an antenna; when working in a non-carrier aggregation mode, the switch module controls The uplink signal end and the downlink signal end connected to the first filtering phase shifting module or the second filtering phase shifting module are connected to send and receive uplink signals in the first frequency band and downlink signals in the first frequency band, or transmit and receive uplink signals in the second frequency band and the second frequency band Downlink signal; when working in the downlink carrier aggregation mode, the switch module controls the two downlink signal terminals to be turned on, and controls the uplink signal terminal connected to the first filtering phase shift module or the second filtering phase shift module to conduct, Realize the

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Transceivers (AREA)

Abstract

L'invention concerne un circuit radiofréquence avec agrégation de porteuses de liaison descendante, un dispositif d'antenne, et un appareil électronique. Le circuit est connecté à une antenne et comprend un module de commutation, et des premier et second modules de déphasage de filtre connectés au module de commutation. Une extrémité du module de commutation comprend deux bornes de signal de liaison montante et deux bornes de signal de liaison descendante, et une autre extrémité du module de commutation est connectée à l'antenne. Le module de commutation, lorsqu'il fonctionne dans un mode d'agrégation de porteuses de liaison descendante, commande l'activation des deux bornes de signal de liaison descendante, et commande l'activation de l'une des bornes de signal de liaison montante connectées au premier module de déphasage de filtre ou au second module de déphasage de filtre.
PCT/CN2019/120970 2019-01-28 2019-11-26 Circuit radiofréquence avec agrégation de porteuses de liaison descendante, dispositif d'antenne, et appareil électronique WO2020155817A1 (fr)

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CN201910081434.1A CN109560833B (zh) 2019-01-28 2019-01-28 一种下行载波聚合射频电路、天线装置和电子设备

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