TWI569590B - Radio front end module - Google Patents

Description

Wireless RF front-end module

The invention relates to a radio frequency front-end module, wherein the first transmitting block and the second transmitting block directly transmit signals to the transceiver end, so as to avoid loss of signal strength caused by the signal passing through the switching unit.

Please refer to FIG. 1 , which is a block diagram of a conventional radio frequency front end module. As shown in the figure, the radio frequency front-end module 10 includes an antenna unit 11, a switch unit 13, a first transmit amplifier 151, a second transmit amplifier 153, a first impedance unit 171, and a second impedance unit 173. A first receiving line 191 and a second receiving line 193.

The switch unit 13 is mainly used as a control switch for transmitting or receiving the radio frequency front end module 10. When the radio frequency front end module 10 transmits the wireless signal, the switch unit 13 can be switched to the a or b end, so that the antenna unit 11 is The switch unit 13 is electrically connected to the first transmit amplifier 151 or the second transmit amplifier 153, and transmits the signal to the antenna unit 11 via the transmit path PATH t1 or PATH t2 to complete the transmission of the wireless signal. On the other hand, when the wireless RF front-end module 10 receives the wireless signal, the switch unit 13 can be switched to the c or d terminal, so that the antenna unit 11 is electrically connected to the first receiving line 191 or the second receiving line 193 via the switch unit 13 . And transmitting the signal received by the antenna unit 11 to the receiving path PATH r1 or PATH r2 to complete the connection of the wireless signal Received.

In order to maximize the output power, a first matching circuit 171 and a second matching circuit 173 are generally disposed between the antenna unit 11 and the first transmitting amplifier 151 and the second transmitting amplifier 153.

When receiving the wireless signal through the wireless front-end module 10, the antenna unit 11 transmits the signal to the first receiving line 191 or the second receiving line 193 via the switching unit 13, and when the wireless signal is transmitted through the wireless front-end module 10, The first transmit amplifier 151 or the second transmit amplifier 153 transmits a signal to the antenna unit 11 via the switch unit 13. In other words, during the process of receiving or transmitting a signal, the signal passes through the switching unit 13 and may cause loss of signal strength. For example, the signal is transmitted to the antenna unit 11 via the transmission paths PATH t1 and PATH t2, which reduces the signal. Power and performance, while the signal received by the antenna unit 11 is transmitted to the receiving paths PATH r1 and PATH r2, the sensitivity of the receiving end is lowered.

An object of the present invention is to provide a radio frequency front-end module in which a switching unit is not disposed between a transmitting block and a transmitting end, so that a signal is not transmitted through a switching unit during transmission from a transmitting block to a transmitting end, thereby avoiding Loss of signal strength.

An object of the present invention is to provide a radio frequency front-end module in which a switching unit is not disposed between a receiving line and a transmitting end, so that a signal is not transmitted through a switching unit during transmission from a transmitting end to a receiving line to avoid loss signals. Strength or reduce the sensitivity of the signal.

An object of the present invention is to provide a radio frequency front-end module in which a transmitting block transmits a signal to a transmitting end and/or an antenna unit, and the receiving line sees a high Impedance to avoid signal transmission to the receiving line.

An object of the present invention is to provide a radio frequency front-end module in which a transmitting end and/or an antenna unit transmit a signal to a receiving line, and a high impedance is seen in the transmitting block to prevent the signal from being transmitted to the transmitting area. Piece.

The invention provides a radio frequency front-end module, comprising: a transceiver end; a plurality of transmitting blocks connected to the transceiver end; a control unit connecting a plurality of transmitting blocks and used to turn on or off the plurality of transmitting blocks; The receiving circuit is connected to the transceiver end; and the plurality of impedance units are electrically connected to the plurality of transmitting blocks and the plurality of receiving lines respectively; and the plurality of impedance switching units are electrically connected to the impedance unit, and switch the impedance unit and the transmitting block or transmit and receive The connection state between the terminals, and the connection state between the switching impedance unit and the receiving line or the transmitting end.

In an embodiment of the radio frequency front-end module of the present invention, the plurality of transmitting blocks include a first transmitting block and a second transmitting block; and the plurality of receiving lines include a first receiving line and a second receiving line. And the plurality of impedance units include a first impedance unit, a second impedance unit, a third impedance unit, and a fourth impedance unit, wherein the first impedance unit is electrically connected to the transceiver end or the first impedance switching unit And a second impedance unit is electrically connected to the transceiver end or the second transmitting block through a second impedance switching unit, and the third impedance unit is electrically connected to the transceiver end or the first receiving unit through a third impedance switching unit The fourth impedance unit is electrically connected to the transceiver end or the second receiving line through a fourth impedance switching unit.

In an embodiment of the radio frequency front-end module of the present invention, the plurality of transmitting blocks include at least a first transmitting block and a second transmitting block; the plurality of receiving lines include at least a first receiving line and a second a receiving circuit; and the plurality of impedance units include at least a first impedance unit, a second impedance unit, a third impedance unit, and a fourth impedance unit, wherein the first One end of the impedance unit is electrically connected to the transceiver end or the first transmitting block, the other end of the first impedance unit is connected to a fixed voltage through a first impedance switching unit, and one end of the second impedance unit is electrically connected to the transmitting end or the second transmitting a block, the other end of the second impedance unit is connected to a fixed voltage through a second impedance switching unit, one end of the third impedance unit is electrically connected to the transceiver end or the first receiving line, and the other end of the third impedance unit is transmitted through a third The impedance switching unit is connected to a fixed voltage. One end of the fourth impedance unit is electrically connected to the transceiver end or the second receiving line, and the other end of the fourth impedance unit is connected to a fixed voltage through a fourth impedance switching unit.

In an embodiment of the radio frequency front-end module of the present invention, the first transmitting block includes a first amplifier and a first matching circuit, and the second transmitting block includes a second amplifier and a second matching circuit. An impedance unit and the first impedance switching unit are connected in parallel with the first matching circuit, and the second impedance unit and the second impedance switching unit are connected in parallel with the second matching circuit.

In an embodiment of the radio frequency front end module of the present invention, the plurality of impedance units are passive components.

10‧‧‧Wireless RF Front End Module

11‧‧‧Antenna unit

13‧‧‧Switch unit

151‧‧‧First Transmit Amplifier

153‧‧‧second transmit amplifier

171‧‧‧First impedance unit

173‧‧‧second impedance unit

191‧‧‧First receiving line

193‧‧‧second receiving line

20‧‧‧Wireless RF Front End Module

21‧‧‧receiver

22‧‧‧Antenna unit

221‧‧‧ impedance matching unit

23‧‧‧First launch block

231‧‧‧First amplifier

232‧‧‧impedance switching unit

233‧‧‧First impedance unit

235‧‧‧First matching circuit

24‧‧‧Control unit

25‧‧‧second launch block

251‧‧‧second amplifier

255‧‧‧Second matching circuit

26‧‧‧Switch unit

27‧‧‧First receiving line

29‧‧‧second receiving line

30‧‧‧Wireless RF Front End Module

33‧‧‧First launch block

331‧‧‧First amplifier

332‧‧‧First impedance switching unit

333‧‧‧First impedance unit

335‧‧‧First matching circuit

34‧‧‧Control unit

35‧‧‧second launch block

351‧‧‧second amplifier

352‧‧‧Second impedance switching unit

353‧‧‧second impedance unit

355‧‧‧Second matching circuit

36‧‧‧Switch unit

40‧‧‧Wireless RF Front End Module

431‧‧‧First launch block

4311‧‧‧First amplifier

4313‧‧‧First matching circuit

433‧‧‧second launch block

4331‧‧‧second amplifier

4333‧‧‧Second matching circuit

439‧‧‧nth launch block

4391‧‧‧nth amplifier

4393‧‧‧nth matching circuit

44‧‧‧Control unit

451‧‧‧First receiving line

453‧‧‧second receiving line

459‧‧‧nth receiving line

46‧‧‧Switch unit

471‧‧‧First impedance unit

473‧‧‧second impedance unit

479‧‧‧nth impedance unit

481‧‧‧First impedance switching unit

483‧‧‧Second impedance switching unit

489‧‧‧nth impedance switching unit

50‧‧‧Wireless RF Front End Module

531‧‧‧First launch block

533‧‧‧second launch block

539‧‧‧nth launch block

54‧‧‧Control unit

551‧‧‧First receiving line

553‧‧‧second receiving line

559‧‧‧nth receiving line

56‧‧‧Switch unit

571‧‧‧First impedance unit

573‧‧‧second impedance unit

579‧‧‧nth impedance unit

581‧‧‧First impedance switching unit

583‧‧‧Second impedance switching unit

589‧‧‧nth impedance switching unit

60‧‧‧Wireless RF Front End Module

631‧‧‧First launch block

6311‧‧‧First amplifier

6313‧‧‧First matching circuit

633‧‧‧second launch block

6331‧‧‧second amplifier

6333‧‧‧Second matching circuit

639‧‧‧nth launch block

64‧‧‧Control unit

651‧‧‧First receiving line

653‧‧‧second receiving line

659‧‧‧n receiving line

671‧‧‧First impedance unit

673‧‧‧second impedance unit

675‧‧‧ third impedance unit

677‧‧‧fourth impedance unit

681‧‧‧First impedance switching unit

683‧‧‧Second impedance switching unit

685‧‧‧ Third impedance switching unit

687‧‧‧4th impedance switching unit

1 is a block diagram of a conventional radio frequency front-end module; FIG. 2 is a schematic diagram showing the structure of a radio frequency front-end module according to an embodiment of the present invention; and FIG. 3 is a radio frequency front-end of another embodiment of the present invention. Schematic diagram of a module; FIG. 4 is a schematic structural view of a radio frequency front end module according to still another embodiment of the present invention; FIG. 5 is a schematic structural diagram of a radio frequency front-end module according to another embodiment of the present invention; FIG. 6 is a schematic structural diagram of a radio frequency front-end module according to another embodiment of the present invention; FIG. 7 is another embodiment of the present invention; FIG. 8 is a schematic structural diagram of a radio frequency front end module according to another embodiment of the present invention; and FIG. 9 is a radio frequency front end according to still another embodiment of the present invention. Schematic diagram of the structure of the module.

While the invention has been described by way of illustrations in the drawings The drawings and the detailed description of the present invention are intended to be in a singular, and the detailed description is only a limitation of the specific form and is not a limitation of the invention. And their permutations are within the scope of the invention.

Please refer to FIG. 2 , which is a schematic structural diagram of a radio frequency front end module according to an embodiment of the present invention. As shown in the figure, the radio frequency front end module 20 includes a transceiver end 21, a first transmitting block 23, a first impedance unit 233, a control unit 24, a second transmitting block 25, and a switching unit 26. a first receiving line 27 and a second receiving line 29, wherein the first transmitting block 23 is directly connected to the transceiver end 21 such that the first transmitting path between the first transmitting block 23 and the transmitting end 21 The switch unit 26 is not provided on the PATH t1.

In an embodiment of the invention, the radio frequency front end module 20 can be composed of one or more wafers, and the at least one antenna unit 22 is connected through the transceiver end 21. The transceiver unit 21 can be directly connected to the antenna unit 22, or connected to the antenna unit 22 through the first impedance matching unit 221, and the first transmitting block 23 and the second transmitting block 25 transmit signals to the antenna unit 22 via the transmitting and receiving end 21, and The antenna unit 22 transmits signals to the first receiving line 27 and the second receiving line 29 via the transceiver terminal 21.

In the embodiment of the present invention, the second transmitting block 25, the first receiving line 27, and the second receiving line 29 are connected to the transceiver end 21 through the switch unit 26. The switching unit 26 can be used to switch the second transmitting block 25, the first receiving line 27 or the second receiving line 29 such that the second transmitting block 25, the first receiving line 27 or the second receiving line 29 is connected to the transceiver terminal 21.

In an embodiment of the invention, the first transmitting block 23 includes a first amplifier 231, and the second transmitting block 25 includes a second amplifier 251. The control unit 24 is connected to the first transmitting block 23 and/or the first amplifier 231 and is used to control the opening or closing of the first transmitting block 23 and/or the first amplifier 231. For example, the control unit 24 can be used to control whether to the first Amplifier 231 supplies power or a bias voltage.

In the embodiment of the present invention, the first impedance unit 233 is electrically connected to the transceiver end 21 and/or the first transmitting block 23, and the impedance switching unit 232 is electrically connected to the first impedance unit 233, and switches the first impedance unit 233. The connection state with the first transmitting block 23 and/or the transceiver terminal 21 is, for example, such that the first impedance unit 233 is electrically connected to the first transmitting block 23 and/or the transceiver end 21.

In an embodiment of the invention, the first impedance unit 233 is connected to the transceiver terminal 21 and/or the first transmitting block 23 through an impedance switching unit 232, and is controlled by the impedance switching unit 232. Whether an impedance unit 233 is electrically connected to the transceiver end 21 and/or the first transmitting block 23. In another embodiment of the present invention, the impedance switching unit 232 is connected to one end of the first impedance unit 233, and the other end of the first impedance unit 233 is connected to a fixed voltage V or ground, and the same can be controlled by the impedance switching unit 232. Whether the impedance unit 233 is electrically connected to the transceiver end 21 and/or the first transmitting block 23 .

In another embodiment of the present invention, one end of the impedance switching unit 232 is connected to the first impedance unit 233, and the other end of the impedance switching unit 232 is connected to a fixed voltage V or ground. Similarly, the first impedance can be controlled by the impedance switching unit 232. Whether the unit 233 is electrically connected to the transceiver end 21 and/or the first transmitting block 23.

In an embodiment of the invention, the first impedance unit 233 can be a passive component, such as a capacitor and/or an inductor. In an embodiment of the invention, the control unit 24 can be connected to the impedance switching unit 232 and used to control the opening or closing of the impedance switching unit 232.

In the embodiment of the present invention, the first impedance unit 233 and the control unit 24 are not located on the first transmission path PATH t1. For example, the first impedance unit 233 is connected to the first emission block 23 through the impedance switching unit 232, and the control unit 24 Then, it is used to control the power or bias of the first emitter block 23. In other words, the signal emitted by the first transmitting block 23 does not pass through the first impedance unit 233 and/or the control unit 24.

When the signal is transmitted to the transceiver terminal 21 and/or the antenna unit 22 by the first transmitting block 23, the switching unit 26 can be turned off, so that the second transmitting block 25, the first receiving line 27, and the second receiving Line 29 is not connected to transceiver terminal 21 and/or antenna unit 22. The control unit 24 turns on the first transmitting block 23, and the impedance switching unit 232 is turned off, so that the first impedance unit 233 is not connected to the transmitting end 21 and/or the first transmitting block 23, and the first The transmitting block 23 can then transmit the signal to the transceiver end 21 via the first transmitting path PAHT t1.

When the signal is transmitted to the transceiver terminal 21 and/or the antenna unit 22 by the second transmitting block 25, the switching unit 26 is switched to the a gear position, so that the second transmitting block 25 is connected to the transceiver terminal 21 through the switching unit 26 and The antenna unit 22 can transmit signals to the transceiver terminal 21 and/or the antenna unit 22 via the second transmission path PATH t2. At this time, the control unit 24 turns off the first transmitting block 23, so that the first transmitting block 23 does not generate a signal, and the impedance switching unit 232 is turned on, so that the first impedance unit 233 is connected to the transmitting and receiving end 21 and / or the first emitter block 23, and the impedance (ZLB) seen to the first emitter block 23 becomes a high impedance in the frequency range in which the second emitter block 25 operates.

When the signal is received by the transceiver terminal 21 and/or the antenna unit 22 on the first receiving line 27, the switching unit 26 can be switched to the b position, so that the first receiving line 27 is connected to the transceiver terminal 21 and/or the antenna through the switching unit 26. The unit 22 can receive signals from the transceiver terminal 21 and/or the antenna unit 22 via the first receiving path PATH r1. At this time, the control unit 24 turns off the first transmitting block 23, and the impedance switching unit 232 is turned on, so that the first impedance unit 233 is connected to the transmitting end 21 and/or the first transmitting block 23, and makes The impedance (ZLB) seen by the first emitter block 23 becomes a high impedance within the frequency range in which the first receiving line 27 operates.

When the signal is received by the transceiver terminal 21 and/or the antenna unit 22 on the second receiving line 29, the switching unit 26 can be switched to the c-gear position, so that the second receiving line 29 is connected to the transceiver terminal 21 and/or the antenna through the switching unit 26. The unit 22 can receive signals from the transceiver terminal 21 and/or the antenna unit 22 via the second receiving path PATH r2. At this time, the control unit 24 turns off the first transmitting block 23, and the impedance switching unit 232 is turned on, so that the first impedance unit 233 is connected to the transmitting end 21 and/or the first transmitting block 23, and makes The impedance (ZLB) seen by the first transmitting block 23 becomes a high impedance in the frequency range in which the second receiving line 29 operates.

In the embodiment of the present invention, the first transmitting block 23 is controlled to transmit the signal to the transceiver terminal 21 through the control unit 24, so that the switching unit 26 is not disposed between the first transmitting block 23 and the transmitting end 21. Since the switch unit 26 does not exist on the first transmit path PATH t1, the first transmit block 23 will not pass the switch unit 26 during the process of transmitting the signal to the transceiver terminal 21, and the signal can be prevented from passing through the switch unit 26 The process results in a loss of signal strength.

In an embodiment of the invention, the control unit 24 can connect the first transmitting block 23 and the second transmitting block 25 and turn on or off the first transmitting block 23 and/or the second transmitting block 25. For example, when the signal is transmitted to the transceiver terminal 21 and/or the antenna unit 22 by the first transmitting block 23, the control unit 24 can turn on the first transmitting block 23 and turn off the second transmitting block 25, and receive the first receiving block 25 When the line 27 or the second receiving line 29 receives the signal, the first transmitting block 23 and the second transmitting block 25 are simultaneously turned off, thereby facilitating the reduction of power consumption.

In an embodiment of the invention, the first transmitting block 23 includes a first matching circuit 235, and the second transmitting block 25 includes a second matching circuit 255. Through the arrangement of the first matching circuit 235 and the second matching circuit 255, the impedance of the circuit can be adjusted, so that the antenna unit 22 achieves impedance matching with the first transmitting block 23 and the second transmitting block 25, respectively.

In an embodiment of the invention, the first transmitting block 23 can be a low frequency signal transmitting block (high frequency signal transmitting block), and is used for transmitting a low frequency signal (high frequency signal) to the transceiver terminal 21, and the second transmitting The block 25 can be a high frequency signal transmitting block (low frequency signal transmitting block) and used to transmit a high frequency signal (low frequency message) to the transceiver end 21. In addition, through the setting of the control unit 24 and/or the first impedance unit 233, the first transmitting block 23 can be connected to the transmitting and receiving end 21 without transmitting the switching unit 26, and the first transmitting block 23 can be reduced to transmit the signal to the transmitting and receiving end 21. Loss of signal generated during the process.

Please refer to FIG. 3 , which is a schematic structural diagram of a radio frequency front end module according to still another embodiment of the present invention. As shown in the figure, the radio frequency front end module 30 includes a transceiver end 21, a first transmitting block 33, a first impedance unit 333, a control unit 34, a second transmitting block 35, and a second impedance unit. 353, a switch unit 36, a first receiving line 27 and a second receiving line 29, wherein the first transmitting block 33 and the second transmitting block 35 are directly connected to the transceiver end 21, so that the first transmitting block 33 is transmitted and received. The first transmitting path PATH t1 between the terminals 21 is not provided with the switching unit 36, and the second transmitting path PATH t2 between the second transmitting block 35 and the transmitting and receiving end 21 is also not provided with the switching unit 36.

In an embodiment of the present invention, the radio frequency front end module 30 can be composed of one or more chips, and connected to the at least one antenna unit 22 through the transceiver end 21, and the transceiver end 21 can be directly connected to the antenna unit 22, or through The first impedance matching unit 221 is connected to the antenna unit 22. The first transmitting block 33 and the second transmitting block 35 transmit signals to the antenna unit 22 via the transmitting and receiving end 21, and the antenna unit 22 transmits the signal to the first through the transmitting and receiving end 21. A receiving line 27 and a second receiving line 29.

In the embodiment of the present invention, the first receiving line 27 and the second receiving line 29 are connected to the transceiver end 21 through the switching unit 36. The switch unit 36 can be used to switch the first receiving line 27 or the second receiving line 29 such that the first receiving line 27 or the second receiving line 29 is connected to the transceiver terminal 21.

In an embodiment of the invention, the first transmitting block 33 includes a first amplifier 331 and the second transmitting block 35 includes a second amplifier 351. The control unit 34 is connected to the first transmitting block 33 and the second transmitting block 35, and is used to control the opening or closing of the first transmitting block 33 and the second transmitting block 35. For example, the control unit 34 can be used to control whether to the first The amplifier 331 and the second amplifier 351 supply power or a bias voltage.

In the embodiment of the present invention, the first impedance unit 333 is electrically connected to the transceiver end 21 and/or Or the first transmitting block 33, and the first impedance switching unit 332 is electrically connected to the first impedance unit 333, and switches the connection state between the first impedance unit 333 and the first transmitting block 33 and/or the transceiver terminal 21. . The second impedance unit 353 is electrically connected to the transceiver terminal 21 and/or the second emitter block 35, and the second impedance switching unit 352 is electrically connected to the second impedance unit 353, and switches the second impedance unit 353 and the second emitter region. The connection state between block 35 and/or transceiver terminal 21. The first impedance unit 333 and the control unit 34 are not located on the first transmission path PATH t1, and the second impedance unit 353 and the control unit 34 are not located on the second transmission path PATH t2.

The first impedance unit 333 is connected in parallel with the first emission block 33, the second impedance unit 353 is connected in parallel with the second emission block 35, and the control unit 34 is used to control the power of the first emission block 33 and the second emission block 35 or bias. In other words, the signal sent by the first transmitting block 33 does not pass through the first impedance unit 333 and/or the control unit 34, and the signal sent by the second transmitting block 35 does not pass through the second impedance unit 353 and/or Or control unit 34.

In the embodiment of the present invention, the first impedance unit 333 is connected to the transceiver terminal 21 and/or the first emitter block 33 through a first impedance switching unit 332, and the second impedance unit 353 is connected through a second impedance switching unit 352. The transceiver terminal 21 and/or the second transmitting block 35. In an embodiment of the invention, the first impedance unit 333 and the second impedance unit 353 can be passive components, such as capacitors and/or inductors.

In an embodiment of the invention, the first impedance switching unit 332 is connected to one end of the first impedance unit 333, and the other end of the first impedance unit 333 is connected to a fixed voltage V or ground. The second impedance switching unit 352 is connected to one end of the second impedance unit 353, and the other end of the second impedance unit 353 is connected to a fixed voltage V or ground. In use, the first impedance switching unit 332 can be used to control whether the first impedance unit 333 is electrically connected to the transceiver end 21 and/or the first transmitting block 33, and The two impedance switching unit 352 controls whether the second impedance unit 353 is electrically connected to the transceiver end 21 and/or the second transmitting block 35.

In another embodiment of the present invention, one end of the first impedance switching unit 332 is connected to the first impedance unit 333, and the other end of the first impedance switching unit 332 is connected to a fixed voltage V or ground. One end of the second impedance switching unit 352 is connected to the second impedance unit 353, and the other end of the second impedance switching unit 352 is connected to a fixed voltage V or ground. The first impedance unit 333 can be used to control whether the first impedance unit 333 is electrically connected to the transceiver terminal 21 and/or the first emitter block 33, and the second impedance switching unit 352 controls whether the second impedance unit 353 is electrically connected. The transceiver terminal 21 and/or the second transmitting block 35 are connected.

In an embodiment of the invention, the control unit 34 can be connected to the first impedance switching unit 332 and the second impedance switching unit 352, and is configured to control the opening or closing of the first impedance switching unit 332 and the second impedance switching unit 352.

When the signal is transmitted to the transceiver terminal 21 and/or the antenna unit 22 by the first transmitting block 33, the switching unit 36 can be turned off, and the first receiving line 27 and the second receiving line 29 will not be connected to the transmitting end. 21 and/or antenna unit 22. Control unit 34 turns on first amplifier 331 and turns off second amplifier 351. The first impedance switching unit 332 is turned off, and the second impedance switching unit 352 is turned on. At this time, the first impedance unit 333 will not be connected to the transceiver terminal 21 and/or the first transmitting block 33, and the second impedance unit 353 will be connected to the transceiver terminal 21 and/or the second transmitting block 35, and The impedance (ZHB) seen by the two transmitting blocks 35 becomes a high impedance in the frequency range in which the first transmitting block 33 operates, so that the first transmitting block 33 can transmit signals to and from the transmitting and receiving via the first transmitting path PAHT t1. End 21.

Transmitting the signal to the transceiver terminal 21 and/or the antenna unit in the second transmitting block 35 At 22 o'clock, the switch unit 36 can be turned off, and the first receiving line 27 and the second receiving line 29 will not be connected to the transceiver terminal 21 and/or the antenna unit 22. Control unit 34 turns off first amplifier 331 and turns on second amplifier 351. The first impedance switching unit 332 is turned "on" and the second impedance switching unit 352 is turned "off". At this time, the first impedance unit 333 will be connected to the transceiver terminal 21 and/or the first transmitting block 33, and the second impedance unit 353 will not be connected to the transceiver terminal 21 and/or the second transmitting block 35, and The impedance (ZLB) seen by an emitter block 33 becomes a high impedance in the frequency range in which the second emitter block 35 operates, so that the second emitter block 35 can transmit signals to and from the transceiver via the second transmission path PAHT t2. End 21.

When the signal is received by the transceiver terminal 21 and/or the antenna unit 22 on the first receiving line 27, the switch unit 36 can be switched to the a gear position, so that the first receiving circuit 27 is connected to the transceiver terminal 21 and/or the antenna through the switch unit 36. The unit 22 can receive signals from the transceiver terminal 21 and/or the antenna unit 22 via the first receiving path PATH r1. At this time, the control unit 34 turns off the first amplifier 331 and the second amplifier 351, and the first impedance switching unit 332 and/or the second impedance switching unit 352 are turned on, so that the first impedance unit 333 is connected to the transceiver end. 21 and/or the first transmitting block 33, and the second impedance unit 353 is connected to the transmitting end 21 and/or the second transmitting block 35, and the impedance (ZLB) seen to the first transmitting block 33, The impedance (ZHB) seen toward the second transmitting block 35 becomes a high impedance in the frequency range in which the first receiving line 27 operates.

When the signal is received by the transceiver terminal 21 and/or the antenna unit 22 on the second receiving line 29, the switching unit 36 can be switched to the b position, so that the second receiving line 29 is connected to the transceiver terminal 21 and/or the antenna through the switching unit 36. The unit 22 can receive signals from the transceiver terminal 21 and/or the antenna unit 22 via the second receiving path PATH r2. At this time, the control unit 34 turns off the first amplifier 331 and the second amplifier 351, and the first impedance switching unit 332 and/or the second impedance switching unit 352 are turned on. (on), the first impedance unit 333 is connected to the transceiver end 21 and/or the first transmitting block 33, and the second impedance unit 353 is connected to the transceiver end 21 and/or the second transmitting block 35, and The impedance (ZLB) seen by one of the emitter blocks 33 and the impedance (ZHB) seen toward the second emitter block 35 become high impedance in the frequency range in which the second receiving line 29 operates.

In an embodiment of the invention, the first transmitting block 33 includes a first matching circuit 335, and the second transmitting block 35 includes a second matching circuit 355. Through the arrangement of the first matching circuit 335 and the second matching circuit 355, the circuit impedance can be adjusted, so that the transceiver terminal 21 achieves impedance matching with the first transmitting block 33 and the second transmitting block 35, respectively.

Referring to FIG. 4, a schematic structural diagram of a radio frequency front end module according to still another embodiment of the present invention is shown. As shown, the radio frequency front-end module 40 includes a transceiver terminal 21, a control unit 44, a plurality of transmitting blocks 431/433/.../439, a plurality of receiving lines 451/453/.../459, and a switching unit. 46 and a plurality of impedance units 471/473/...479, wherein a plurality of transmitting blocks 431/433/.../439 are connected to the transceiver end 21, and the plurality of impedance units 471/473/...479 are electrically connected to the plurality of transmitting blocks respectively. 431/433/.../439 or transceiver terminal 21, the control unit 44 is connected to a plurality of transmitting blocks 431/433/.../439, and is used to turn on or off a plurality of transmitting blocks 431/433/.../439, the switching unit 46 The transceiver terminal 21 and a plurality of receiving lines 451/453/.../459 are connected.

In an embodiment of the invention, the transmitting block includes a first transmitting block 431, a second transmitting block 433, ... and an nth transmitting block 439; the receiving line includes a first receiving line 451, a first The two receiving lines 453, ... and an nth receiving line 459; the impedance unit comprises a first impedance unit 471, a second impedance unit 473, ... and an nth impedance unit 479.

The first receiving line 451, the second receiving line 453, ... and the nth receiving line 459 are connected to the transmitting and receiving end 21 via the switching unit 46, and are connected to the antenna unit 22 via the transmitting and receiving end 21. Switch single The element 46 can be used to switch the first receiving line 451, the second receiving line 453, ... and the nth receiving line 459 such that the first receiving line 451, the second receiving line 453, ... or the nth receiving line 459 are connected to the transceiver terminal 21.

In an embodiment of the present invention, the first transmitting block 431 includes a first amplifier 4311 and a first matching circuit 4313; the second transmitting block 433 includes a second amplifier 4331 and a second matching circuit 4333; The n-emitter block 439 includes an nth amplifier 4391 and an nth matching circuit 4393.

The first transmitting block 431, the second transmitting block 433, ... and the nth transmitting block 439 are directly connected to the transmitting and receiving end 21, and are connected to the antenna unit 22 through the transmitting and receiving end 21. Since there is no switching unit between the first transmitting block 431, the second transmitting block 433, ... and the nth transmitting block 439 and the transmitting end 21 and/or the antenna unit 22, the signal can be effectively reduced by the first transmitting block. 431. The second transmitting block 433, . . . and the nth transmitting block 439 transmit the signal loss generated by the transmitting end 21 and/or the antenna unit 22.

The first transmitting block 431, the second transmitting block 433, ... and the nth transmitting block 439 are respectively connected to the control unit 44, and can control the first transmitting block 431, the second transmitting block 433, ... through the control unit 44. And turning on or off the nth transmitting block 439.

In the embodiment of the present invention, the first emission block 431, the second emission block 433, ..., and the nth emission block 439 may also pass through the first impedance switching unit 481, the second impedance switching unit 483, ... and the The n-impedance switching unit 489 connects one end of the first impedance unit 471, one end of the second impedance unit 473, and one end of the n-th impedance unit 479, and the other end of the first impedance unit 471 and the other end of the second impedance unit 473 The other end of the nth impedance unit 479 is respectively connected to a fixed voltage V or ground to provide AC ground.

In an embodiment of the invention, the first impedance switching unit 481 is connected to one end of the first impedance unit 471, and the other end of the first impedance unit 471 is connected to a fixed voltage V or ground. The second impedance switching unit 483 is connected to one end of the second impedance unit 473, and the other end of the second impedance unit 473 is connected to a fixed voltage V or ground. The nth impedance switching unit 489 is connected to one end of the nth impedance unit 479, and the other end of the nth impedance unit 479 is connected to a fixed voltage V or ground. In use, the first impedance unit 471 can be used to control whether the first impedance unit 471 is electrically connected to the transceiver end 21 and/or the first transmission block 431; and the second impedance switching unit 483 is used to control whether the second impedance unit 473 is electrically connected. The transmitting end 21 and/or the second transmitting block 433 are controlled by the nth impedance switching unit 489. The nth impedance unit 479 is electrically connected to the transmitting end 21 and/or the nth transmitting block 439.

In another embodiment of the present invention, one end of the first impedance switching unit 481 is connected to the first impedance unit 471, and the other end of the first impedance switching unit 481 is connected to a fixed voltage V or ground. One end of the second impedance switching unit 483 is connected to the second impedance unit 473, and the other end of the second impedance switching unit 483 is connected to a fixed voltage V or ground. One end of the nth impedance switching unit 489 is connected to the nth impedance unit 479, and the other end of the nth impedance switching unit 489 is connected to a fixed voltage V or ground. In use, the first impedance unit 471 can be used to control whether the first impedance unit 471 is electrically connected to the transceiver end 21 and/or the first transmission block 431; and the second impedance switching unit 483 is used to control whether the second impedance unit 473 is electrically connected. The transmitting end 21 and/or the second transmitting block 433 are controlled by the nth impedance switching unit 489. The nth impedance unit 479 is electrically connected to the transmitting end 21 and/or the nth transmitting block 439.

In an actual application, the first impedance switching unit 481, the second impedance switching unit 483, ..., and the nth impedance switching unit 489 are turned on or off respectively with the first transmitting block 431, the second transmitting block 433, ... and The nth transmitting block 439 is turned on or off in the opposite direction, This will separately adjust the impedances Zt1, Zt2, ..., and Ztn seen to the first and second emission blocks 431, 433, ..., and 431, respectively, so that the emission block in the on state is in the When the operating frequency range of the transmitting block is turned on, the impedance seen to other blocks is high impedance.

In an embodiment of the present invention, please refer to FIG. 5, the first impedance unit 471 and the first impedance switching unit 481 can be connected in parallel with the first matching circuit 4313; the second impedance unit 473 and the second impedance switching unit 483 can be connected in parallel. The second matching circuit 4333; and the nth impedance unit 479 and the nth impedance switching unit 489 may be connected in parallel to the nth matching circuit 4393.

Please refer to FIG. 6 , which is a schematic structural diagram of a radio frequency front end module according to still another embodiment of the present invention. As shown in the figure, the radio frequency front end module 50 includes a transceiver end 21, a plurality of transmitting blocks (such as a first transmitting block 531 and a second transmitting block 533), and a plurality of receiving lines (such as a first receiving line). 551 and a second receiving line 553), a plurality of impedance units (such as a first impedance unit 571 and a second impedance unit 573) and a switching unit 56.

The first transmitting block 531 and the second transmitting block 533 are connected to the transmitting and receiving end 21 through the switch unit 56, and can change the connection state of the first transmitting block 531 and the second transmitting block 533 and the transmitting and receiving end 21 through the switching unit 56. . In an embodiment of the invention, the radio frequency front-end module 50 can also include a control unit 54. The control unit 54 is connected to a plurality of transmitting blocks 531/533 and is used to turn on or off a plurality of transmitting blocks 531/533.

The first receiving line 551 and the second receiving line 553 are directly connected to the transmitting and receiving end 21, and can be connected to the antenna unit 22 through the transmitting and receiving end 21. Since the switching unit is not disposed between the first receiving line 551 and the second receiving line 553 and the transmitting end 21 and/or the antenna unit 22, the signal can be reduced from the transmitting end 21 and/or the antenna unit 22 to the first receiving line 551 and The loss generated during the second receiving line 553.

In an embodiment of the invention, the first receiving line 551 is connected to the first impedance unit 571 through the first impedance switching unit 581, and the second receiving line 553 is connected to the second impedance unit 573 through the second impedance switching unit 583. When the first emission block 551 or the second emission block 553 is turned on, the first impedance switching unit 581 and/or the second impedance switching unit 583 will be turned on, so that Zr1 and Zr2 are in the first emission block 551. And the second emission block 553 operates in a frequency range that becomes high impedance, so that signal loss can be avoided.

In an embodiment of the present invention, as shown in FIG. 7, a plurality of transmitting blocks 531/533/.../539 are connected to the transceiver terminal 21 through the switch unit 56; a plurality of receiving lines 551/553/.../559 are connected. The transceiver unit 21; the plurality of impedance units 571/573/.../579 are electrically connected to the transceiver terminal 21 or the plurality of receiving lines 551/553/.../559 through at least one impedance switching unit 581/583/.../589, respectively. In another embodiment, a plurality of transmitting blocks 531/533/.../539 may be connected through the control unit 54 and used to turn on or off a plurality of transmitting blocks 531/533/.../539.

In an embodiment of the invention, the transmitting block may include a first transmitting block 551, a second transmitting block 553, ... and an nth transmitting block 559; the receiving line may include a first receiving line 551, a first The second receiving circuit 553, ... and the nth receiving line 559; the impedance unit may include a first impedance unit 571, a second impedance unit 573, ... and an nth impedance unit 579; the impedance switching unit may include a first impedance switching The unit 581, a second impedance switching unit 583, ... and an nth impedance switching unit 589.

In an embodiment of the invention, the first receiving line 551, the second receiving line 553, ..., and the nth receiving line 559 can also pass through the first impedance switching unit 581, the second impedance switching unit 583, ..., and the nth impedance, respectively. The switching unit 589 is connected to one end of the first impedance unit 571, one end of the second impedance unit 573, and one end of the nth impedance unit 579, and the first impedance unit 571 The other end of the second impedance unit 573, the other end of the second impedance unit 573, and the other end of the nth impedance unit 579 are respectively connected to a fixed voltage V or ground to provide AC ground.

In another embodiment of the present invention, the first impedance switching unit 581 is connected to one end of the first impedance unit 571, and the other end of the first impedance unit 571 is connected to a fixed voltage V or ground; the second impedance switching unit 583 is connected to the first One end of the second impedance unit 573, and the other end of the second impedance unit 573 is connected to a fixed voltage V or ground; and the nth impedance switching unit 589 is connected to one end of the nth impedance unit 579, and the other end of the nth impedance unit 579 Then connect a fixed voltage V or ground.

In another embodiment of the present invention, one end of the first impedance switching unit 581 is connected to the first impedance unit 571, and the other end of the first impedance switching unit 581 is connected to a fixed voltage V or ground; the second impedance switching unit 583 One end is connected to the second impedance unit 573, and the other end of the second impedance switching unit 583 is connected to a fixed voltage V or ground; and one end of the nth impedance switching unit 589 is connected to the nth impedance unit 579, and the nth impedance switching unit 589 The other end is connected to a fixed voltage V or ground.

Please refer to FIG. 8 , which is a schematic structural diagram of a radio frequency front end module according to still another embodiment of the present invention. As shown, the radio frequency front end module 60 includes a transceiver end 21, a plurality of transmitting blocks (such as a first transmitting block 631 and a second transmitting block 633), a control unit 64, and a plurality of receiving lines ( For example, a first receiving line 651 and a second receiving line 653) and a plurality of impedance units (such as a first impedance unit 671, a second impedance unit 673, a third impedance unit 675, and a fourth impedance unit 677). The first transmitting block 631, the second transmitting block 633, the first receiving line 651, and the second receiving line 653 are directly connected to the transceiver end 21, and no switching unit is disposed on the transmission path.

In one embodiment of the present invention, the radio frequency front end module 60 can be formed by one or more chips, and connected to the at least one antenna unit 22 through the transceiver end 21, and the transceiver end 21 can be directly connected to the antenna unit 22, or through The first impedance matching unit 221 is connected to the antenna unit 22. The first transmitting block 631 and the second transmitting block 633 transmit signals to the antenna unit 22 via the transmitting and receiving end 21, and the antenna unit 22 transmits the signal to the first through the transmitting and receiving end 21. A receiving line 651 and a second receiving line 653.

No switching unit is disposed on the first transmitting path PATH t1 between the first transmitting block 631 and the transmitting and receiving end 21, so that the signal does not pass through the switching unit during transmission from the first transmitting block 631 to the transmitting and receiving end 21. No switching unit is disposed on the second transmitting path PATH t2 between the second transmitting block 633 and the transmitting and receiving end 21, so that the signal is not transmitted through the switching unit during transmission from the second transmitting block 633 to the transmitting and receiving end 21. No switching unit is disposed on the first receiving path PATH r1 between the first receiving line 651 and the transmitting end 21, so that the signal is not transmitted through the switching unit during transmission from the transmitting end 21 to the first receiving line 651. No switching unit is provided on the second receiving path PATH r2 between the second receiving line 653 and the transceiver terminal 21, so that the signal does not pass through the switching unit during transmission from the transmitting end 21 to the second receiving line 653.

Therefore, when the signal is transmitted to the transceiver terminal 21 and/or the antenna unit 22 via the first transmission path PATH t1 or the second transmission path PATH t2, or is received or received by the first receiving path PATH r1 or the second receiving path PATH r2 21 and/or antenna unit 22 does not cause loss of signal strength when receiving signals.

The control unit 64 is connected to the first transmitting block 631 and the second transmitting block 633, and is used to control the opening or closing of the first transmitting block 631 and the second transmitting block 633, and the connection or signal transmission manner is as shown in FIG. The implementation method described.

In one embodiment of the present invention, one end of the first impedance unit 671 is connected to the transceiver end 21 and/or the first transmitting block 631 through the first impedance switching unit 681, and the other end of the first impedance unit 671 is connected to a fixed voltage V or Ground to provide AC short. One end of the second impedance unit 673 is connected to the transceiver end 21 and/or the second emission block 633 through the second impedance switching unit 683, and the other end of the second impedance unit 673 is connected to a fixed voltage V or ground to provide an AC ground (AC). Short). The first receiving line 651 is connected to one end of a third impedance unit 675 through the third impedance switching unit 685, and the other end of the third impedance unit 675 is connected to a fixed voltage V or ground to provide AC ground. The second receiving line 653 is connected to one end of a fourth impedance unit 677 through the fourth impedance switching unit 687, and the other end of the fourth impedance unit 677 is connected to a fixed voltage V or ground to provide AC ground.

In another embodiment of the present invention, the first impedance switching unit 681 is connected to one end of the first impedance unit 671, and the other end of the first impedance unit 671 is connected to a fixed voltage V or ground; the second impedance switching unit 683 is connected to the first One end of the second impedance unit 673, and the other end of the second impedance unit 673 is connected to a fixed voltage V or ground; the third impedance switching unit 685 is connected to one end of the third impedance unit 675, and the other end of the third impedance unit 675 is connected A fixed voltage V or ground is connected; and a fourth impedance switching unit 687 is connected to one end of the fourth impedance unit 677, and the other end of the fourth impedance unit 677 is connected to a fixed voltage V or ground.

In another embodiment of the present invention, one end of the first impedance switching unit 681 is connected to the first impedance unit 671, and the other end of the first impedance switching unit 681 is connected to a fixed voltage V or ground; the second impedance switching unit 683 One end is connected to the second impedance unit 673, and the other end of the second impedance switching unit 683 is connected to a fixed voltage V or ground; one end of the third impedance switching unit 685 is connected to the third impedance unit 675, and the third impedance switching unit 685 is The other end is connected to a fixed The voltage V or the ground; and one end of the fourth impedance switching unit 687 is connected to the fourth impedance unit 677, and the other end of the fourth impedance switching unit 687 is connected to a fixed voltage V or ground.

The first impedance unit 671 and the control unit 64 are not located on the first transmission path PATH t1, the second impedance unit 673 and the control unit 64 are not located on the second transmission path PATH t2, and the third impedance unit 675 is not located in the first reception path PATH R1 is on, and the fourth impedance unit 677 is also not located on the second receiving path PATH r2. For example, the first impedance unit 671 is connected in parallel with the first emission block 631, the second impedance unit 673 is connected in parallel with the second emission block 633, the third impedance unit 675 is connected in parallel with the first receiving line 651, and the fourth impedance unit 677 is connected in parallel with the second receiving line 653. .

In an embodiment of the invention, the control unit 64 can be connected to the first impedance switching unit 681, the second impedance switching unit 683, the third impedance switching unit 685, and the fourth impedance switching unit 687, and is configured to control the first impedance switching unit 681. The second impedance switching unit 683, the third impedance switching unit 685, and the fourth impedance switching unit 687 are turned on or off. In addition, the first impedance unit 671, the second impedance unit 673, the third impedance unit 675, and the fourth impedance unit 677 can be passive components, such as capacitors and/or inductors.

When the signal is transmitted to the transceiver terminal 21 and/or the antenna unit 22 by the first transmitting block 631, the control unit 64 turns on the first transmitting block 631 and turns off the second transmitting block 633, and switches the first impedance. The unit 681 is off, and the second impedance switching unit 683 and/or the third impedance switching unit 685 and/or the fourth impedance switching unit 687 are turned on. At this time, the second impedance unit 673 and/or the third The impedance unit 675 and/or the fourth impedance unit 677 will be connected to the transceiver terminal 21 and/or the first emitter block 631 such that ZHB, Zr1 and Zr2 become high impedance within the frequency range in which the first emitter block 631 operates. Such a signal will transmit the signal to the transceiver terminal 21 and/or the antenna unit 22 via the first transmission path PATH t1 and avoid the loss of the signal on other paths.

When the signal is transmitted to the transceiver terminal 21 and/or the antenna unit 22 by the second transmitting block 633, the control unit 64 will turn on the second transmitting block 633 and turn off the first transmitting block 631, and switch the second impedance. The unit 683 is off, and the first impedance switching unit 681 and/or the third impedance switching unit 685 and/or the fourth impedance switching unit 687 are turned on, at this time, the first impedance unit 671 and/or the third The impedance unit 675 and/or the fourth impedance unit 677 will be connected to the transceiver terminal 21 and/or the second emitter block 633 such that ZLB, Zr1 and Zr2 become high impedance in the frequency range in which the second emitter block 633 operates. Such a signal will transmit the signal to the transceiver terminal 21 and/or the antenna unit 22 via the second transmission path PATH t2 and avoid the loss of the signal on other paths.

When the signal is transmitted from the transceiver terminal 21 and/or the antenna unit 22 to the first receiving line 651, the control unit 64 turns off the first amplifier 6311 and the second amplifier 6331, and the third impedance switching unit 685 is also turned off. The first impedance switching unit 681 and/or the second impedance switching unit 683 and/or the fourth impedance switching unit 687 are turned "on". The ZLB, the ZHB, and the Zr2 are made high impedance in the frequency range in which the first receiving line 651 operates, so that the transceiver terminal 21 and/or the antenna unit 22 transmits the signal to the first receiving line 651 via the first receiving path PATH r1. And avoid the loss of signals on other paths.

When the signal of the transceiver terminal 21 is transmitted to the second receiving line 653, the control unit 64 turns off the first amplifier 6311 and the second amplifier 6331, and the fourth impedance switching unit 687 is also turned off, and the first impedance switching unit The 681 and/or the second impedance switching unit 683 and/or the third impedance switching unit 685 are turned "on". The ZLB, the ZHB, and the Zr1 are made high impedance in the frequency range in which the second receiving line 653 operates, so that the transceiver end 21 and/or the antenna unit 22 transmits the signal to the second receiving line 653 via the first receiving path PATH r2. And avoid the loss of signals on other paths.

In an embodiment of the invention, the first emission block 631 includes a first amplifier 6311 and a first matching circuit 6313, and the second emission block 633 includes a second amplifier 6331 and a second matching circuit 6333. In addition, the first impedance switching unit 681 and the first impedance unit 671 can be connected in parallel with the first matching circuit 6313, and the second impedance switching unit 683 and the second impedance unit 673 are connected in parallel with the second matching circuit 6333 to form a pattern similar to that shown in FIG. Connection method.

In another embodiment of the present invention, as shown in FIG. 9, the transmitting block may include a first transmitting block 631, a second transmitting block 633, ..., and an nth transmitting block 639; receiving The line may include a first receiving line 651, a second receiving line 653, , and an nth receiving line 659. In addition, the first transmitting block 631, the second transmitting block 633, ..., the nth transmitting block 639, the first receiving line 651, the second receiving line 653, ..., and the nth receiving line 659 are respectively connected to corresponding ones. Impedance switching unit and impedance unit.

A connection as referred to in the present invention refers to a direct connection or an indirect connection between one or more objects or members, for example one or more intermediate connections may be present between one or more objects or members.

The words "may," and "changes" described in the system of the specification are not limitations of the invention. The technical terms used in the specification are mainly for the description of specific embodiments and are not intended to be limiting. The single quantifiers (such as one and the one) used in the specification may also be plural, unless explicitly stated in the contents of the specification. For example, a device referred to in the specification may include a combination of two or more devices, and one of the materials mentioned in the specification may include a mixture of a plurality of substances.

The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, that is, the shape, structure, and features described in the scope of the present application. And the equivalent changes and modifications of the spirit are included in the scope of the patent application of the present invention.

20‧‧‧Wireless RF Front End Module

21‧‧‧receiver

22‧‧‧Antenna unit

221‧‧‧ impedance matching unit

23‧‧‧First launch block

231‧‧‧First amplifier

232‧‧‧impedance switching unit

233‧‧‧First impedance unit

235‧‧‧First matching circuit

24‧‧‧Control unit

25‧‧‧second launch block

251‧‧‧second amplifier

255‧‧‧Second matching circuit

26‧‧‧Switch unit

27‧‧‧First receiving line

29‧‧‧second receiving line

Claims (5)

A radio frequency front-end module includes: a transceiver end; a plurality of transmitting blocks connected to the transceiver end, wherein no switching unit is disposed between the plurality of transmitting blocks and the transceiver end; a control unit is connected to the a plurality of transmitting blocks for turning on or off the plurality of transmitting blocks; a plurality of receiving lines connected to the transceiver end, wherein no switching unit is disposed between the plurality of receiving lines and the transmitting end; a plurality of impedances a unit electrically connecting the plurality of transmitting blocks and the plurality of receiving lines; and a plurality of impedance switching units electrically connected to the complex impedance unit and switching the complex impedance unit and the transmitting block or the a connection state between the transceiver terminals, and switching a connection state between the complex impedance unit and the receiving line or the transceiver terminal. The radio frequency front-end module of claim 1, wherein the plurality of transmitting blocks comprise at least a first transmitting block and a second transmitting block; the plurality of receiving lines at least including a first receiving And the second impedance receiving unit; and the plurality of impedance units include at least a first impedance unit, a second impedance unit, a third impedance unit, and a fourth impedance unit, wherein the first impedance unit transmits a first The impedance switching unit is electrically connected to the transceiver end or the first transmitting block, and the second impedance unit is electrically connected to the transceiver end or the second transmitting block through a second impedance switching unit, and the third impedance unit is The fourth impedance unit is electrically connected to the transceiver or the first receiving line through a third impedance switching unit, and the fourth impedance unit is electrically connected to the transceiver or the second receiving line through a fourth impedance switching unit. The radio frequency front-end module of claim 1, wherein the plurality of transmitting blocks comprise at least a first transmitting block and a second transmitting block; the plurality of receiving lines at least including a first receiving a circuit and a second receiving circuit; and the plurality of impedance units includes at least a first impedance unit, a second impedance unit, a third impedance unit, and a fourth impedance unit, wherein one end of the first impedance unit is electrically Connect the transceiver or the first sender The other end of the first impedance unit is connected to a fixed voltage through a first impedance switching unit, and one end of the second impedance unit is electrically connected to the transceiver end or the second transmitting block, the second impedance unit The other end is connected to a fixed voltage through a second impedance switching unit. One end of the third impedance unit is electrically connected to the transceiver end or the first receiving line, and the other end of the third impedance unit is transmitted through a third impedance switching unit. Connected to a fixed voltage, one end of the fourth impedance unit is electrically connected to the transceiver end or the second receiving line, and the other end of the fourth impedance unit is connected to a fixed voltage through a fourth impedance switching unit. The radio frequency front-end module of claim 2, wherein the first transmitting block comprises a first amplifier and a first matching circuit, and the second transmitting block comprises a second amplifier and a first The second matching circuit, the first impedance unit and the first impedance switching unit are connected in parallel with the first matching circuit, and the second impedance unit and the second impedance switching unit are connected in parallel with the second matching circuit. The radio frequency front-end module of claim 1, wherein the plurality of impedance units are passive components.