Radio frequency front end assembly of communication module and communication module

Abstract

The utility model relates to a radio frequency front end assembly of a communication module and the communication module. The radio frequency front-end assembly comprises an antenna, a first common end switch, a first duplexer, a single-pole double-throw switch, a low-noise amplifier and a power amplifier, the antenna is connected with a common end of the first common end switch, and a first selection end of the first common end switch is connected with an antenna end of the first duplexer; the receiving end of the first duplexer is connected with the first end of the low-noise amplifier, the transmitting end of the first duplexer is connected with the common end of the single-pole double-throw switch, the normally open end of the single-pole double-throw switch is connected with the first end of the power amplifier, and the normally closed end of the single-pole double-throw switch is connected with the first end of the low-noise amplifier. The technical problem that a radio frequency front end assembly of a wireless communication product is high in cost and large in size due to the fact that a filter is high in cost and large in size is solved.

Description

Technical Field

[0001] This application relates to the field of wireless communication technologies, and particularly to a radio frequency front-end component of a communication module and a communication module. Background Art

[0002] With the development of wireless communication products to 5G, there are more requirements for radio frequency band combinations. These bands include low frequencies (frequency range 617 - 960 GHz), medium-high frequencies (frequency range 1452 - 2690 MHz), ultra-high frequencies (frequency range 3.3 - 5 GHz), millimeter waves (frequency range 24.25 - 56.3 GHz), etc. The radio frequency front-end design of wireless communication products needs to support various bands and modes for effective communication with base stations. Specifically, it includes the transmit and receive paths supporting FDD (Frequency Division Duplex) and TDD (Time Division Duplex), as well as the supplementary receive and transmit paths of SDL (Supplementary Downlink) and SUL (Supplementary Uplink). The hardware path of the receive path is antenna - common terminal switch - filter / diplexer - low-noise amplifier - radio frequency transceiver, and the transmit path is radio frequency transceiver - power amplifier - filter / diplexer - common terminal switch - antenna. In the design of the low-frequency path, common bands include Band 5, 6, 8, 12, 13, 14, 17, 18, 19, 20, 26, 28, 29, 71, etc. These bands include the bands of FDD and SDL modes. For the FDD band (such as Band28), a diplexer is used for both the transmit and receive paths. For the SDL band (such as Band 29), only a filter (SAW) is used for the receive path. However, the filter is not only costly but also large in size, resulting in high cost and large size of the radio frequency front-end component of the wireless communication product. Summary of the Utility Model

[0003] This application provides a radio frequency front-end component of a communication module and a communication module to solve the technical problem that the high cost and large size of the filter lead to high cost and large size of the radio frequency front-end component of the wireless communication product.

[0004] In a first aspect, the present application provides a radio frequency front-end component of a communication module, including: an antenna, a first common terminal switch, a first duplexer, a single-pole double-throw switch, a low-noise amplifier, and a power amplifier. The antenna is connected to the common terminal of the first common terminal switch. The first selection terminal of the first common terminal switch is connected to the antenna terminal of the first duplexer. The receiving terminal of the first duplexer is connected to the first terminal of the low-noise amplifier. The transmitting terminal of the first duplexer is connected to the common terminal of the single-pole double-throw switch. The normally open terminal of the single-pole double-throw switch is connected to the first terminal of the power amplifier. The normally closed terminal of the single-pole double-throw switch is connected to the first terminal of the low-noise amplifier.

[0005] As an optional example, when the communication module is in a frequency division duplex mode, the first selection terminal of the first common terminal switch is connected, and the normally open terminal of the single-pole double-throw switch is connected.

[0006] As an optional example, when the communication module is in an auxiliary receive downlink mode, the first selection terminal of the first common terminal switch is connected, and the normally closed terminal of the single-pole double-throw switch is connected.

[0007] As an optional example, the radio frequency front-end component further includes: a second duplexer. The antenna terminal of the second duplexer is connected to the second selection terminal of the first common terminal switch. The receiving terminal of the second duplexer is connected to the first terminal of the low-noise amplifier. The transmitting terminal of the first duplexer is connected to the first terminal of the power amplifier.

[0008] As an alternative example, the above-mentioned second duplexer includes: a first sub-duplexer, a second sub-duplexer, a third sub-duplexer, a fourth sub-duplexer, a fifth sub-duplexer, and a sixth sub-duplexer. The second selection end of the above-mentioned first common-end switch includes a first sub-selection end, a second sub-selection end, a third sub-selection end, a fourth sub-selection end, a fifth sub-selection end, and a sixth sub-selection end. The antenna end of the above-mentioned first sub-duplexer is connected to the first sub-selection end of the above-mentioned first common-end switch. The receiving end of the above-mentioned first sub-duplexer is connected to the first end of the above-mentioned low-noise amplifier. The transmitting end of the above-mentioned first sub-duplexer is connected to the first end of the above-mentioned power amplifier. The antenna end of the above-mentioned second sub-duplexer is connected to the second sub-selection end of the above-mentioned first common-end switch. The receiving end of the above-mentioned second sub-duplexer is connected to the first end of the above-mentioned low-noise amplifier. The transmitting end of the above-mentioned second sub-duplexer is connected to the first end of the above-mentioned power amplifier. The antenna end of the above-mentioned third sub-duplexer is connected to the third sub-selection end of the above-mentioned first common-end switch. The receiving end of the above-mentioned third sub-duplexer is connected to the first end of the above-mentioned low-noise amplifier. The transmitting end of the above-mentioned third sub-duplexer is connected to the first end of the above-mentioned power amplifier. The antenna end of the above-mentioned fourth sub-duplexer is connected to the fourth sub-selection end of the above-mentioned first common-end switch. The receiving end of the above-mentioned fourth sub-duplexer is connected to the first end of the above-mentioned low-noise amplifier. The transmitting end of the above-mentioned fourth sub-duplexer is connected to the first end of the above-mentioned power amplifier. The antenna end of the above-mentioned fifth sub-duplexer is connected to the fifth sub-selection end of the above-mentioned first common-end switch. The receiving end of the above-mentioned fifth sub-duplexer is connected to the first end of the above-mentioned low-noise amplifier. The transmitting end of the above-mentioned fifth sub-duplexer is connected to the first end of the above-mentioned power amplifier. The antenna end of the above-mentioned sixth sub-duplexer is connected to the sixth sub-selection end of the above-mentioned first common-end switch. The receiving end of the above-mentioned sixth sub-duplexer is connected to the first end of the above-mentioned low-noise amplifier. The transmitting end of the above-mentioned sixth sub-duplexer is connected to the first end of the above-mentioned power amplifier.

[0009] As an alternative example, the above-mentioned RF front-end module further includes: a second common-end switch and a third common-end switch. The common end of the above-mentioned second common-end switch is connected to the first end of the above-mentioned power amplifier. The first selection end of the above-mentioned second common-end switch is connected to the transmitting end of the above-mentioned first sub-duplexer. The second selection end of the above-mentioned second common-end switch is connected to the transmitting end of the above-mentioned second sub-duplexer. The common end of the above-mentioned third common-end switch is connected to the first end of the above-mentioned power amplifier. The first selection end of the above-mentioned third common-end switch is connected to the transmitting end of the above-mentioned third sub-duplexer. The second selection end of the above-mentioned third common-end switch is connected to the transmitting end of the above-mentioned fourth sub-duplexer. The third selection end of the above-mentioned third common-end switch is connected to the transmitting end of the above-mentioned fifth sub-duplexer. The fourth selection end of the above-mentioned third common-end switch is connected to the transmitting end of the above-mentioned sixth sub-duplexer.

[0010] As an alternative example, the above radio frequency front-end component further includes: a fourth common terminal switch, the common terminal of the fourth common terminal switch is connected to the first terminal of the low-noise amplifier, the first selection terminal of the fourth common terminal switch is connected to the receiving end of the fifth sub-duplexer, the second selection terminal of the fourth common terminal switch is connected to the receiving end of the sixth sub-duplexer, the third selection terminal of the fourth common terminal switch is connected to the receiving end of the second duplexer, and the fourth selection terminal of the fourth common terminal switch is connected to the normally closed end of the single-pole double-throw switch.

[0011] As an alternative example, the above radio frequency front-end component further includes: a radio frequency transceiver, the first terminal of the radio frequency transceiver is connected to the second terminal of the low-noise amplifier, and the second terminal of the radio frequency transceiver is connected to the second terminal of the power amplifier.

[0012] As an alternative example, the above radio frequency front-end component further includes: a baseband processor, and the baseband processor is connected to the third terminal of the radio frequency transceiver.

[0013] In a second aspect, the present application provides a communication module, including the above radio frequency front-end component.

[0014] In the embodiment of the present application, an antenna, a first common terminal switch, a first duplexer, a single-pole double-throw switch, a low-noise amplifier, and a power amplifier are adopted. The above antenna is connected to the common terminal of the first common terminal switch. The first selection terminal of the first common terminal switch is connected to the antenna terminal of the first duplexer. The receiving end of the first duplexer is connected to the first terminal of the low-noise amplifier. The transmitting end of the first duplexer is connected to the common terminal of the single-pole double-throw switch. The normally open end of the single-pole double-throw switch is connected to the first terminal of the power amplifier. The normally closed end of the single-pole double-throw switch is connected to the first terminal of the low-noise amplifier. In the radio frequency front-end component, since the receiving end of the first duplexer is the FDD frequency band, and the transmitting end of the first duplexer is divided into the FDD frequency band transmission and the SDL frequency band reception through the normally closed end of the single-pole double-throw switch, based on the characteristic of the common frequency point of the FDD frequency band transmission mode and the SDL frequency band reception mode, the cost of the SDL frequency band filter is saved, and at the same time, the matching bits are removed, saving the circuit board layout space of the radio frequency front-end component, and further solving the technical problem that the high cost and large size of the filter lead to the high cost and large size of the radio frequency front-end component of the wireless communication product. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0016] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] One or more embodiments are exemplarily illustrated by the pictures in the corresponding accompanying drawings. These exemplary illustrations do not limit the embodiments. Elements with the same reference numerals in the drawings represent similar elements. Unless otherwise stated, the drawings in the figures do not constitute a scale limitation.

[0018] Figure 1 It is a structural diagram of a radio frequency front-end component of an optional communication module according to an embodiment of the present application;

[0019] Figure 2 It is a circuit connection diagram of a radio frequency front-end component of an optional communication module according to an embodiment of the present application. Detailed implementation manners

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0021] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplification and clarity and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0022] According to the first aspect of the embodiments of the present application, a radio frequency front-end component of a communication module is provided. Optionally, as Figure 1 shown, the radio frequency front-end component includes:

[0023] An antenna 102, a first common port switch 104, a first duplexer 106, a single-pole double-throw switch 108, a low-noise amplifier 110, and a power amplifier 112. The antenna 102 is connected to the common port of the first common port switch 104. The first selection port of the first common port switch 104 is connected to the antenna port of the first duplexer 106. The receiving port of the first duplexer 106 is connected to the first end of the low-noise amplifier 110. The transmitting port of the first duplexer 106 is connected to the common port of the single-pole double-throw switch 108. The normally open end of the single-pole double-throw switch 108 is connected to the first end of the power amplifier 112. The normally closed end of the single-pole double-throw switch 108 is connected to the first end of the low-noise amplifier 110.

[0024] Optionally, in this embodiment, a duplexer is a radio frequency component used to allow a transmitter and a receiver to operate on the same antenna without interfering with each other. It is mainly used in a frequency division duplexing system to achieve isolation of transmitted and received signals. Specifically, a duplexer can separate transmitted and received signals of different frequencies so that they can be transmitted and received through the same antenna. A common port switch is a radio frequency switch used to select or switch signal paths. It is usually used in wireless communication devices to select between different radio frequency signal paths to achieve different functions, such as switching between different frequency bands, switching between transmit and receive paths, etc. A low-noise amplifier (LNA) is an electronic device specifically designed to amplify weak signals, and its main characteristics are extremely low noise figure and high gain. A power amplifier (PA) is an electronic device used to increase the power of a signal, mainly used in wireless communication systems to ensure that the signal can be effectively propagated to the receiving end. The main function of a power amplifier is to amplify the input low-power signal to the required high-power output to achieve long-distance signal transmission.

[0025] Optionally, the radio frequency front-end design of a wireless communication product needs to support various frequency bands and modes for effective communication with a base station. Specifically, it includes supporting the transmit and receive paths of FDD (Frequency Division Duplex) and TDD (Time Division Duplex), as well as the supplementary receive and transmit paths of SDL (Supplementary Downlink) and SUL (Supplementary Uplink). The hardware path of the receive path is antenna - common terminal switch - filter / diplexer - low-noise amplifier - radio frequency transceiver, and the transmit path is radio frequency transceiver - power amplifier - filter / diplexer - common terminal switch - antenna. In the design of the low-frequency path, common frequency bands include Band 5, 6, 8, 12, 13, 14, 17, 18, 19, 20, 26, 28, 29, 71, etc. These frequency bands include the frequency bands of the FDD mode and the SDL mode. For the FDD frequency band (such as Band 28): a diplexer is used for the transmit and receive paths; for the SDL frequency band (such as Band 29): only a filter (SAW) is used for the receive path. However, the filter is not only costly but also large in size, resulting in high cost and large size of the radio frequency front-end components of the wireless communication product. However, the transmit frequency of the FDD frequency band (such as Band 28) is in the range of 703 - 748 MHz, and the receive frequency is in the range of 758 - 803 MHz. The receive frequency of the SDL frequency band (such as Band 29) is in the range of 717 - 723 MHz. Therefore, the receive frequency of the SDL frequency band (such as Band 29) is within the transmit frequency range of the FDD frequency band (such as Band 28). Thus, in this embodiment, based on the characteristic of the common frequency point between the transmit frequency range of the FDD frequency band and the receive frequency range of the SDL frequency band, the filter in the original design for the SDL frequency band is replaced with a single-pole double-throw switch, such as Figure 2As shown in the circuit connection diagram of the RF front-end component, antenna 1 is connected to the common terminal of the first common terminal switch 2. The first selection terminal of the first common terminal switch 2 is connected to the antenna terminal of the first duplexer 3. The receiving terminal of the first duplexer 3 is connected to the first terminal of the low-noise amplifier 6. The transmitting terminal of the first duplexer 3 is connected to the common terminal of the single-pole double-throw switch 4. The normally open terminal of the single-pole double-throw switch 4 is connected to the first terminal of the power amplifier 7. The normally closed terminal of the single-pole double-throw switch 4 is connected to the first terminal of the low-noise amplifier 6. The receiving terminal of the first duplexer 3 is for the FDD frequency band (such as Band 28). The transmitting terminal of the first duplexer 3 is divided into transmission in the FDD frequency band (such as Band 28) and reception in the SDL frequency band (such as Band 29) through the normally closed terminal of the single-pole double-throw switch 4. When the communication module is in the FDD frequency band (such as Band28) mode, the first selection terminal of the first common terminal switch 2 is connected, and the normally open terminal of the single-pole double-throw switch 4 is connected. When the communication module is in the SDL frequency band (such as Band 29) mode, the first selection terminal of the first common terminal switch 2 is connected, and the normally closed terminal of the single-pole double-throw switch 4 is connected. Thus, based on the characteristic of the common frequency point of the FDD frequency band transmission mode and the SDL frequency band reception mode, the cost of the filter in the SDL frequency band is saved, and at the same time, the matching bits are removed, achieving the purpose of saving the circuit board layout space of the RF front-end component, and further solving the technical problem that the high cost and large size of the filter lead to the high cost and large size of the RF front-end component of the wireless communication product.

[0026] As an optional example, when the communication module is in the frequency division duplex mode, the first selection terminal of the first common terminal switch is connected, and the normally open terminal of the single-pole double-throw switch is connected.

[0027] As an optional example, when the communication module is in the auxiliary receive downlink mode, the first selection terminal of the first common terminal switch is connected, and the normally closed terminal of the single-pole double-throw switch is connected.

[0028] Optionally, in this embodiment, the transmission frequency of the FDD frequency band (such as Band 28) is between 703 and 748 MHz, the reception frequency is between 758 and 803 MHz, and the reception frequency of the SDL frequency band (such as Band 29) is between 717 and 723 MHz. Then the reception frequency of the SDL frequency band (such as Band29) is within the transmission frequency range of the FDD frequency band (such as Band 28), such as Figure 2As shown in the circuit connection diagram of the RF front-end component, antenna 1 is connected to the common terminal of the first common terminal switch 2. The first selection terminal of the first common terminal switch 2 is connected to the antenna terminal of the first duplexer 3. The receiving terminal of the first duplexer 3 is connected to the first terminal of the low-noise amplifier 6. The transmitting terminal of the first duplexer 3 is connected to the common terminal of the single-pole double-throw switch 4. The normally open terminal of the single-pole double-throw switch 4 is connected to the first terminal of the power amplifier 7. The normally closed terminal of the single-pole double-throw switch 4 is connected to the first terminal of the low-noise amplifier 6. The receiving terminal of the first duplexer 3 is for the FDD frequency band (such as Band 28). The transmitting terminal of the first duplexer 3 is divided into transmission in the FDD frequency band (such as Band २८) and reception in the SDL frequency band (such as Band 29) through the normally closed terminal of the single-pole double-throw switch 4. When the communication module is in the FDD frequency band (such as Band 28) mode, the first selection terminal of the first common terminal switch 2 is connected, and the normally open terminal of the single-pole double-throw switch 4 is connected. When the communication module is in the SDL frequency band (such as Band 29) mode, the first selection terminal of the first common terminal switch 2 is connected, and the normally closed terminal of the single-pole double-throw switch 4 is connected. Thus, based on the characteristic of the common frequency point of the FDD frequency band transmission mode and the SDL frequency band reception mode, the cost of the filter in the SDL frequency band is saved, and at the same time, the matching bits are removed, saving the circuit board layout space of the RF front-end component.

[0029] As an alternative example, the RF front-end component further includes:

[0030] A second duplexer, the antenna terminal of the second duplexer is connected to the second selection terminal of the first common terminal switch, the receiving terminal of the second duplexer is connected to the first terminal of the low-noise amplifier, and the transmitting terminal of the first duplexer is connected to the first terminal of the power amplifier.

[0031] As an alternative example, the second duplexer includes:

[0032] It should be noted that there seems to be an error in the original text where "Band २८" is used instead of "Band 28". This has been corrected in the translation.The first sub-duplexer, the second sub-duplexer, the third sub-duplexer, the fourth sub-duplexer, the fifth sub-duplexer, and the sixth sub-duplexer. The second selection end of the first common-end switch includes a first sub-selection end, a second sub-selection end, a third sub-selection end, a fourth sub-selection end, a fifth sub-selection end, and a sixth sub-selection end. The antenna end of the first sub-duplexer is connected to the first sub-selection end of the first common-end switch. The receiving end of the first sub-duplexer is connected to the first end of the low-noise amplifier. The transmitting end of the first sub-duplexer is connected to the first end of the power amplifier. The antenna end of the second sub-duplexer is connected to the second sub-selection end of the first common-end switch. The receiving end of the second sub-duplexer is connected to the first end of the low-noise amplifier. The transmitting end of the second sub-duplexer is connected to the first end of the power amplifier. The antenna end of the third sub-duplexer is connected to the third sub-selection end of the first common-end switch. The receiving end of the third sub-duplexer is connected to the first end of the low-noise amplifier. The transmitting end of the third sub-duplexer is connected to the first end of the power amplifier. The antenna end of the fourth sub-duplexer is connected to the fourth sub-selection end of the first common-end switch. The receiving end of the fourth sub-duplexer is connected to the first end of the low-noise amplifier. The transmitting end of the fourth sub-duplexer is connected to the first end of the power amplifier. The antenna end of the fifth sub-duplexer is connected to the fifth sub-selection end of the first common-end switch. The receiving end of the fifth sub-duplexer is connected to the first end of the low-noise amplifier. The transmitting end of the fifth sub-duplexer is connected to the first end of the power amplifier. The antenna end of the sixth sub-duplexer is connected to the sixth sub-selection end of the first common-end switch. The receiving end of the sixth sub-duplexer is connected to the first end of the low-noise amplifier. The transmitting end of the sixth sub-duplexer is connected to the first end of the power amplifier.

[0033] Optionally, in this embodiment, as Figure 2As shown in the circuit connection diagram of the RF front-end component, the second duplexer 5 includes six sub-duplexers, namely the first sub-duplexer, the second sub-duplexer, the third sub-duplexer, the fourth sub-duplexer, the fifth sub-duplexer, and the sixth sub-duplexer, which respectively correspond to the frequencies of six FDD frequency band modes of A, B, C, D, E, and F. Specifically, the antenna terminal of the first sub-duplexer is connected to the first sub-selection terminal of the first common terminal switch 2, the receiving terminal of the first sub-duplexer is connected to the first terminal of the low-noise amplifier 6, the transmitting terminal of the first sub-duplexer is connected to the first terminal of the power amplifier 7, the antenna terminal of the second sub-duplexer is connected to the second sub-selection terminal of the first common terminal switch 2, the receiving terminal of the second sub-duplexer is connected to the first terminal of the low-noise amplifier 6, the transmitting terminal of the second sub-duplexer is connected to the first terminal of the power amplifier 7, the antenna terminal of the third sub-duplexer is connected to the third sub-selection terminal of the first common terminal switch 2, the receiving terminal of the third sub-duplexer is connected to the first terminal of the low-noise amplifier 6, the transmitting terminal of the third sub-duplexer is connected to the first terminal of the power amplifier 7, the antenna terminal of the fourth sub-duplexer is connected to the fourth sub-selection terminal of the first common terminal switch 2, the receiving terminal of the fourth sub-duplexer is connected to the first terminal of the low-noise amplifier 6, the transmitting terminal of the fourth sub-duplexer is connected to the first terminal of the power amplifier 7, the antenna terminal of the fifth sub-duplexer is connected to the fifth sub-selection terminal of the first common terminal switch 2, the receiving terminal of the fifth sub-duplexer is connected to the first terminal of the low-noise amplifier 6, the transmitting terminal of the fifth sub-duplexer is connected to the first terminal of the power amplifier 7, the antenna terminal of the sixth sub-duplexer is connected to the sixth sub-selection terminal of the first common terminal switch 2, the receiving terminal of the sixth sub-duplexer is connected to the first terminal of the low-noise amplifier 6, and the transmitting terminal of the sixth sub-duplexer is connected to the first terminal of the power amplifier 7. By using the duplexer, the RF system can effectively use the same antenna for two-way communication. In the RF front-end of the wireless communication device, the common terminal switch is located between the antenna and the duplexer and is used to select different duplexers, thereby realizing signal processing of different frequency bands or modes. By using the common terminal switch, the wireless communication device can flexibly process multi-band and multi-mode signals and improve the functions and performance of the system.

[0034] As an optional example, the RF front-end component further includes:

[0035] The second common terminal switch and the third common terminal switch. The common terminal of the second common terminal switch is connected to the first end of the power amplifier. The first selection terminal of the second common terminal switch is connected to the transmitting end of the first sub-duplexer. The second selection terminal of the second common terminal switch is connected to the transmitting end of the second sub-duplexer. The common terminal of the third common terminal switch is connected to the first end of the power amplifier. The first selection terminal of the third common terminal switch is connected to the transmitting end of the third sub-duplexer. The second selection terminal of the third common terminal switch is connected to the transmitting end of the fourth sub-duplexer. The third selection terminal of the third common terminal switch is connected to the transmitting end of the fifth sub-duplexer. The fourth selection terminal of the third common terminal switch is connected to the transmitting end of the sixth sub-duplexer.

[0036] Optionally, in this embodiment, as Figure 2 shown in the circuit connection diagram of the RF front-end component, a second common terminal switch 8 and a third common terminal switch 9 are further provided between the duplexer and the power amplifier 7. Specifically, the common terminal of the second common terminal switch 8 is connected to the first end of the power amplifier 7. The first selection terminal of the second common terminal switch 8 is connected to the transmitting end of the first sub-duplexer. The second selection terminal of the second common terminal switch 8 is connected to the transmitting end of the second sub-duplexer. The common terminal of the third common terminal switch is connected to the first end of the power amplifier 7. The first selection terminal of the third common terminal switch 9 is connected to the transmitting end of the third sub-duplexer. The second selection terminal of the third common terminal switch 9 is connected to the transmitting end of the fourth sub-duplexer. The third selection terminal of the third common terminal switch 9 is connected to the transmitting end of the fifth sub-duplexer. The fourth selection terminal of the third common terminal switch 9 is connected to the transmitting end of the sixth sub-duplexer. By using the common terminal switch, the wireless communication device can flexibly process signals of multiple frequency bands and multiple modes, improving the functions and performance of the system.

[0037] As an optional example, the RF front-end component further includes:

[0038] A fourth common terminal switch. The common terminal of the fourth common terminal switch is connected to the first end of the low-noise amplifier. The first selection terminal of the fourth common terminal switch is connected to the receiving end of the fifth sub-duplexer. The second selection terminal of the fourth common terminal switch is connected to the receiving end of the sixth sub-duplexer. The third selection terminal of the fourth common terminal switch is connected to the receiving end of the second duplexer. The fourth selection terminal of the fourth common terminal switch is connected to the normally closed end of the single-pole double-throw switch.

[0039] Optionally, in this embodiment, as Figure 2As shown in the circuit connection diagram of the RF front-end component, a fourth common terminal switch 10 is further provided between the duplexer and the low-noise amplifier 6. Specifically, the common terminal of the fourth common terminal switch 10 is connected to the first end of the low-noise amplifier 6, the first selection terminal of the fourth common terminal switch 10 is connected to the receiving end of the fifth sub-duplexer, the second selection terminal of the fourth common terminal switch 10 is connected to the receiving end of the sixth sub-duplexer, the third selection terminal of the fourth common terminal switch 10 is connected to the receiving end of the second duplexer, and the fourth selection terminal of the fourth common terminal switch 10 is connected to the normally closed end of the single-pole double-throw switch 4. By using the common terminal switch, the wireless communication device can flexibly process multi-band and multi-mode signals, improving the functions and performance of the system.

[0040] As an optional example, the RF front-end component further includes:

[0041] An RF transceiver, the first end of the RF transceiver is connected to the second end of the low-noise amplifier, and the second end of the RF transceiver is connected to the second end of the power amplifier.

[0042] Optionally, in this embodiment, the RF front-end component further includes an RF transceiver, the first end of the RF transceiver is connected to the second end of the low-noise amplifier, and the second end of the RF transceiver is connected to the second end of the power amplifier. An RF transceiver is an electronic device that integrates the functions of transmitting and receiving RF signals. It can realize the transmission and reception of signals in the same device, thus simplifying the design, reducing the number of components, and improving the efficiency of the system. In the receiving path, the RF signal is converted into a baseband signal and sent to the baseband processor for further processing. In the transmitting path, the baseband signal is converted into an RF signal and sent to the power amplifier for transmission.

[0043] As an optional example, the RF front-end component further includes:

[0044] A baseband processor, the baseband processor is connected to the third end of the RF transceiver.

[0045] Optionally, in this embodiment, the RF front-end component further includes a baseband processor, the baseband processor is connected to the third end of the RF transceiver. The baseband processor (Baseband Processor) is responsible for processing the baseband part of the communication signal. The baseband signal refers to the signal that has not been modulated onto the RF carrier and contains all the data information to be transmitted. The baseband processor mainly processes tasks such as encoding, modulation, demodulation, and decoding of digital signals.

[0046] It should be noted that, for the foregoing embodiments of each radio frequency front-end component, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that this application is not limited by the described action sequence, because according to this application, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0047] On the other hand, according to an embodiment of the present application, a communication module is further provided, including the above radio frequency front-end component.

[0048] For other examples of this embodiment, please refer to the above examples and will not be elaborated here.

Claims

1. A radio frequency front-end component of a communication module, characterized in that Comprising: An antenna, a first common terminal switch, a first duplexer, a single-pole double-throw switch, a low-noise amplifier, and a power amplifier. The antenna is connected to the common terminal of the first common terminal switch. The first selection terminal of the first common terminal switch is connected to the antenna terminal of the first duplexer. The receiving terminal of the first duplexer is connected to the first terminal of the low-noise amplifier. The transmitting terminal of the first duplexer is connected to the common terminal of the single-pole double-throw switch. The normally open terminal of the single-pole double-throw switch is connected to the first terminal of the power amplifier. The normally closed terminal of the single-pole double-throw switch is connected to the first terminal of the low-noise amplifier.

2. The RF front-end component according to claim 1, wherein When the communication module is in the frequency-division duplex mode, the first selection terminal of the first common terminal switch is connected, and the normally open terminal of the single-pole double-throw switch is connected.

3. The RF front-end component according to claim 1, characterized in that When the communication module is in the auxiliary receiving downlink mode, the first selection terminal of the first common terminal switch is connected, and the normally closed terminal of the single-pole double-throw switch is connected.

4. The RF front-end component according to claim 1, characterized in that, The radio frequency front-end component further includes: a second duplexer. The antenna terminal of the second duplexer is connected to the second selection terminal of the first common terminal switch. The receiving terminal of the second duplexer is connected to the first terminal of the low-noise amplifier. The transmitting terminal of the first duplexer is connected to the first terminal of the power amplifier.

5. The RF front-end component according to claim 4, wherein The second duplexer includes: a first sub-duplexer, a second sub-duplexer, a third sub-duplexer, a fourth sub-duplexer, a fifth sub-duplexer, and a sixth sub-duplexer. The second selection end of the first common-end switch includes a first sub-selection end, a second sub-selection end, a third sub-selection end, a fourth sub-selection end, a fifth sub-selection end, and a sixth sub-selection end. The antenna end of the first sub-duplexer is connected to the first sub-selection end of the first common-end switch. The receiving end of the first sub-duplexer is connected to the first end of the low-noise amplifier. The transmitting end of the first sub-duplexer is connected to the first end of the power amplifier. The antenna end of the second sub-duplexer is connected to the second sub-selection end of the first common-end switch. The receiving end of the second sub-duplexer is connected to the first end of the low-noise amplifier. The transmitting end of the second sub-duplexer is connected to the first end of the power amplifier. The antenna end of the third sub-duplexer is connected to the third sub-selection end of the first common-end switch. The receiving end of the third sub-duplexer is connected to the first end of the low-noise amplifier. The transmitting end of the third sub-duplexer is connected to the first end of the power amplifier. The antenna end of the fourth sub-duplexer is connected to the fourth sub-selection end of the first common-end switch. The receiving end of the fourth sub-duplexer is connected to the first end of the low-noise amplifier. The transmitting end of the fourth sub-duplexer is connected to the first end of the power amplifier. The antenna end of the fifth sub-duplexer is connected to the fifth sub-selection end of the first common-end switch. The receiving end of the fifth sub-duplexer is connected to the first end of the low-noise amplifier. The transmitting end of the fifth sub-duplexer is connected to the first end of the power amplifier. The antenna end of the sixth sub-duplexer is connected to the sixth sub-selection end of the first common-end switch. The receiving end of the sixth sub-duplexer is connected to the first end of the low-noise amplifier. The transmitting end of the sixth sub-duplexer is connected to the first end of the power amplifier.

6. The RF front-end component according to claim 5, wherein The RF front-end assembly further includes: a second common-end switch and a third common-end switch. The common end of the second common-end switch is connected to the first end of the power amplifier. The first selection end of the second common-end switch is connected to the transmitting end of the first sub-duplexer. The second selection end of the second common-end switch is connected to the transmitting end of the second sub-duplexer. The common end of the third common-end switch is connected to the first end of the power amplifier. The first selection end of the third common-end switch is connected to the transmitting end of the third sub-duplexer. The second selection end of the third common-end switch is connected to the transmitting end of the fourth sub-duplexer. The third selection end of the third common-end switch is connected to the transmitting end of the fifth sub-duplexer. The fourth selection end of the third common-end switch is connected to the transmitting end of the sixth sub-duplexer.

7. The RF front-end component according to claim 6, wherein The radio frequency front-end component further includes: a fourth common terminal switch, the common terminal of the fourth common terminal switch is connected to the first end of the low-noise amplifier, the first selection terminal of the fourth common terminal switch is connected to the receiving end of the fifth sub-duplexer, the second selection terminal of the fourth common terminal switch is connected to the receiving end of the sixth sub-duplexer, the third selection terminal of the fourth common terminal switch is connected to the receiving end of the second duplexer, and the fourth selection terminal of the fourth common terminal switch is connected to the normally-closed end of the single-pole double-throw switch.

8. The radio frequency front-end component according to claim 1, wherein The radio frequency front-end component further includes: a radio frequency transceiver, the first end of the radio frequency transceiver is connected to the second end of the low-noise amplifier, and the second end of the radio frequency transceiver is connected to the second end of the power amplifier.

9. The RF front-end component according to claim 8, characterized in that, The radio frequency front-end component further includes: a baseband processor, the baseband processor is connected to the third end of the radio frequency transceiver.

10. A communication module, characterized in that, The communication module includes the radio frequency front-end component according to any one of claims 1 to 9.

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