Radio frequency front-end circuit and antenna device

Abstract

The utility model discloses a radio frequency front-end circuit and an antenna device, and relates to the technical field of communication. The radio frequency front-end circuit comprises a receiving module, a transmitting module and a module change-over switch, the receiving module and the transmitting module are connected with the radio frequency transceiver, the radio frequency front-end circuit has the functions of receiving and transmitting the first radio frequency signal or the second radio frequency signal, and different lines are switched through the module change-over switch, so that the radio frequency front-end circuit can be accessed to different communication networks; the rear end of the radio frequency front-end circuit only needs to be connected with a group of radio frequency transceivers and baseband devices, so that the communication layout is simplified, the risk of electromagnetic compatibility is reduced, the number of core devices of the communication module is reduced, the miniaturization of communication equipment and the complexity of power management are facilitated, and the power efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of communications, and in particular to a radio frequency front-end circuit and an antenna device. Background Art

[0002] With the growth of Internet business, a single communication network is not enough to meet the business needs for low latency and high capacity. In order to solve the problem that a single-mode communication module can only work in a single communication network, the existing technology uses a dual-mode communication module in the communication equipment to achieve switching between two communication networks.

[0003] like Figure 1 The figure shows the architecture of the existing dual-mode communication module. Two communication modules are used inside the terminal. The control module drives the switching module inside the communication terminal to switch between the two communication modules, thereby managing different communication networks separately. The disadvantage of the prior art is that the baseband, RF transceiver, RF front-end circuit and transceiver channel switching switch need to be set in the two communication modules respectively. Integrating the two communication modules increases the volume and device cost of the communication equipment. In order to reduce the space occupied, the devices are often arranged compactly, which increases the electromagnetic compatibility risk. Utility Model Content

[0004] The utility model provides a radio frequency front-end circuit and an antenna device to solve the problems of large size, high device cost and increased electromagnetic compatibility risk of existing dual-mode communication modules.

[0005] The utility model is realized by the following technical solutions:

[0006] In a first aspect of the present invention, a radio frequency front-end circuit is provided, comprising:

[0007] A receiving channel, connected to the RF transceiver, for receiving and processing the first RF signal or the second RF signal; the frequency of the first RF signal is different from that of the second RF signal;

[0008] a transmitting channel, connected to the RF transceiver, and configured to perform transmission processing on the first RF signal or the second RF signal;

[0009] The channel switching switch is used to connect the receiving channel to the antenna to receive the first radio frequency signal or the second radio frequency signal from the antenna; or to connect the transmitting channel to the antenna to transmit the first radio frequency signal or the second radio frequency signal to the antenna.

[0010] The utility model reasonably arranges the radio frequency front-end circuit, realizes the reception and transmission of different radio frequency signals through the receiving channel and the transmitting channel, manages the receiving and transmitting channels through the channel switching switch, and realizes dual-mode communication while using fewer core components, reducing space occupancy and component costs, simplifying the circuit layout, and reducing the electromagnetic compatibility risk.

[0011] In one embodiment, the receiving channel includes a first receiving module, a second receiving module and a first switching switch; the first receiving module is used to receive and process the first radio frequency signal; the second receiving module is used to receive and process the second radio frequency signal; the first switching switch is used to connect the first receiving module or the second receiving module to the radio frequency transceiver;

[0012] The transmission channel includes a first transmission module, a second transmission module and a second switching switch; the first transmission module is used to transmit and process the first radio frequency signal; the second transmission module is used to transmit and process the second radio frequency signal; the second switching switch is used to connect the first transmission module or the second transmission module to the radio frequency transceiver.

[0013] In one embodiment, the first receiving module at least includes a first amplifying module and a first filtering module connected in series, and the second receiving module at least includes the first amplifying module and the second filtering module connected in series; the receiving process at least includes signal amplification process and filtering process.

[0014] In one implementation, the first amplification module is a low noise amplifier.

[0015] In one embodiment, the first transmitting module at least includes a second amplifying module and a third filtering module connected in series, and the second transmitting module at least includes the second amplifying module and a fourth filtering module connected in series; the transmitting processing at least includes signal amplification processing and filtering processing.

[0016] In one implementation, the second amplification module is a power amplifier.

[0017] In one embodiment, when the antenna has a dual interface, the channel switching switch is used to connect the first receiving module or the first transmitting module to the first interface of the antenna so that the first interface receives or transmits the first RF signal; or, connect the second receiving module or the second transmitting module to the second interface of the antenna so that the second interface receives or transmits the second RF signal.

[0018] In one implementation, the first radio frequency signal is a high-orbit satellite communication signal, and the second radio frequency signal is a low-orbit satellite communication signal.

[0019] In one implementation, the receiving channel is connected to a receiving channel of a radio frequency transceiver, and the transmitting channel is connected to a transmitting channel of the radio frequency transceiver.

[0020] A second aspect of the utility model provides an antenna device, including a baseband device, a radio frequency transceiver, a radio frequency front-end circuit and at least one antenna; the radio frequency front-end circuit is the radio frequency front-end circuit in any of the above-mentioned embodiments.

[0021] Compared with the prior art, the utility model has the following advantages and beneficial effects: by reasonably arranging the RF front-end circuit, dual-mode communication is achieved, while simplifying the circuit layout and reducing the risk of electromagnetic compatibility performance. The back end of the communication module only requires one set of RF transceiver and baseband, which reduces the number and volume of components in the communication module and is more conducive to power management.

[0022] Different RF channels are managed by switching switches in the receiving and transmitting channels, so that different RF channels can share one amplification module, reducing the device cost and volume of the RF front-end circuit.

[0023] The channel switching switch controls the connection between different RF receiving and transmitting channels and the antenna interface, which can be applied to multiple antennas or multiple antenna interfaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present utility model, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work. In the drawings:

[0025] Figure 1 This is the architecture diagram of the existing dual-mode communication module;

[0026] Figure 2 This is another communication module radio frequency front-end circuit architecture diagram of an embodiment of the utility model;

[0027] Figure 3 This is a diagram of a dual-interface antenna front-end radio frequency circuit structure of an embodiment of the utility model;

[0028] Figure 4 It is a structural schematic diagram of an antenna device according to an embodiment of the utility model.

[0029] The following are the descriptions of the reference numerals:

[0030] 001, 009, 101-satellite communication antenna, 002-L-band transceiver channel switch, 003-L-band receiving channel amplifier, 004-L-band receiving channel filter, 005, 013, 108-RF transceiver, 006, 014, 109-baseband device, 007-L-band transmitting channel filter, 008-L-band transmitting channel amplifier, 010-S-band transceiver channel switch, 011-S-band receiving channel amplifier, 012-S-band receiving channel filter, 015-S-band transmitting channel filter, 016-S-band transmitting channel Channel amplifier, 1-first antenna interface, 2-second antenna interface, 102-channel switching switch, 103-first amplification module, 104-first switching switch, 105-first filtering module, 106-second filtering module, 107, 110, 202, 215-RF switch, 111-third filtering module, 112, fourth filtering module, 113-second switching switch, 114-second amplification module, 100-receiving channel, 200-transmitting channel, 300-RF front-end circuit, 203, 204-low noise amplifier, 213, 214-power amplifier. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

[0032] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to or inherent to other steps or units of the device.

[0033] The terms used in the various embodiments of the application are only used to describe the purpose of specific embodiments and are not intended to limit the various embodiments of the application. As used herein, the singular form is intended to also include the plural form, unless the context clearly indicates otherwise. Unless otherwise limited, all terms used here (including technical terms and scientific terms) have the same meaning as the meanings commonly understood by ordinary technicians in the field of the various embodiments of the application. The terms (such as the terms defined in the dictionary generally used) will be interpreted as having the same meaning as the contextual meaning in the relevant technical field and will not be interpreted as having an idealized meaning or an overly formal meaning, unless clearly defined in the various embodiments of the application.

[0034] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present invention. However, it is apparent to those skilled in the art that these specific details are not necessary to implement the present invention. In other embodiments, in order to avoid confusing the present invention, well-known structures, circuits, materials or methods are not specifically described.

[0035] The embodiments of the utility model provide a radio frequency front-end circuit and an antenna device, which are suitable for dual-mode communication, especially for high-orbit and low-orbit satellite dual-mode communication, which is beneficial to saving communication module components, reducing the size of communication equipment, reducing electromagnetic compatibility risks and power consumption management.

[0036] In order to highlight the improvement of the utility model, the prior art is briefly analyzed below. Figure 1 The existing communication scheme includes two communication modules 01 and 02, which communicate with different satellite communication antennas 001 and 009 respectively. The communication module 01 and the communication module 02 are switched through the control module 018 and the switching module 017. The communication module 01 includes an L-band transceiver channel switching switch 002, an L-band receiving channel amplifier 003, an L-band receiving channel filter 004, an L-band transmitting channel filter 007, an L-band transmitting channel amplifier 008, a radio frequency transceiver 005 and a baseband device 006. The connection mode of each device is shown in the figure. The communication module 02 includes an S-band transceiver channel switching switch 010, an S-band receiving channel amplifier 011, an S-band receiving channel filter 012, an S-band transmitting channel filter 015, an S-band transmitting channel amplifier 016, a radio frequency transceiver 013 and a baseband device 014. The connection mode of each device is shown in the figure.

[0037] It can be seen that in the above-mentioned dual-mode communication module, the L-band communication module and the S-band communication module exist independently and are only selected through the module switching switch. As a result, two complete communication modules need to be installed in one communication device, and the space occupied by the control module and the switching module is additionally increased, which increases the volume and device cost of the dual-mode communication device, which is undoubtedly disadvantageous under the current trend of miniaturization of terminal devices.

[0038] The utility model improves the RF front-end circuit in the communication module, so that only one set of RF transceiver and baseband devices are needed for dual-mode communication, which simplifies the circuit layout, reduces the risk of electromagnetic compatibility performance, reduces the number of core components, reduces the terminal cost, and makes the dual-mode communication equipment miniaturized. It also reduces the complexity of power management and improves the power utilization efficiency.

[0039] like Figure 2As shown, it is a communication module RF front-end circuit architecture diagram of the utility model, and the RF front-end circuit 300 includes a receiving channel 100, a transmitting channel 200 and a channel switching switch 102. Among them, the receiving channel 100 and the transmitting channel 200 are both connected to the same RF transceiver 108, which is used for front-end processing of receiving and transmitting RF signals.

[0040] The receiving channel 100 is used to receive a first RF signal or a second RF signal and perform receiving processing, wherein the frequency of the first RF signal is different from that of the second RF signal. For example, the first RF signal is an S-band signal (central wavelength 10 cm), corresponding to a high-orbit satellite communication signal, and the second RF signal is an L-band signal (central wavelength 22 cm), corresponding to a low-orbit satellite communication signal, thereby having the ability to cross-access a high-orbit satellite constellation and a low-orbit satellite constellation.

[0041] The transmitting channel 200 is used to receive the first radio frequency signal or the second radio frequency signal and perform transmission processing.

[0042] The channel switching switch 102 is used to switch the communication link to a receiving channel or a transmitting channel. Specifically, the channel switching switch connects the receiving channel to the antenna to receive the first RF signal or the second RF signal from the antenna; or connects the transmitting channel to the antenna to transmit the first RF signal or the second RF signal to the antenna.

[0043] See also Figure 2 Taking the antenna as a single interface as an example, the single antenna interface can realize the transmission and reception of RF signals of different frequencies. The channel switching switch connects the single antenna interface to the receiving channel according to the signal transmission and reception properties, receives the first RF signal or the second RF signal from the antenna interface, performs reception processing through the receiving channel, and transmits it to the back-end RF transceiver. The RF transceiver converts the first RF signal or the second RF signal into a baseband signal and transmits it to the baseband device for signal processing or protocol conversion, and communicates with the internal devices of the terminal.

[0044] In one embodiment, the receiving channel includes a first receiving module, a second receiving module and a first switching switch 104. The first receiving module is used to receive and process the first radio frequency signal, the second receiving module is used to receive and process the second radio frequency signal, and the first switching switch 104 is used to connect the first receiving module or the second receiving module to the radio frequency transceiver.

[0045] The first receiving module at least includes a first amplifying module 103 and a first filtering module 105 connected in series, and the second receiving module at least includes a first amplifying module 103 and a second filtering module 106 connected in series.

[0046] Similarly, the transmission channel includes a first transmission module, a second transmission module and a second switch 113. The first transmission module is used to transmit the first RF signal, the second transmission module is used to transmit the second RF signal, and the second switch 113 is used to connect the first transmission module or the second transmission module to the RF transceiver.

[0047] The first transmitting module at least includes a second amplifying module 114 and a third filtering module 111 connected in series, and the second transmitting module at least includes a second amplifying module 114 and a fourth filtering module 112 connected in series.

[0048] In the receiving channel and the transmitting channel, there are circuits for processing the first RF signal and the second RF signal respectively. The processing circuits of different frequency bands are selected and connected through the switching switch in the channel, so that one RF transceiver can complete the reception and transmission of RF signals of different frequency bands. Specifically, the receiving channel is connected to the receiving channel of the RF transceiver, and the transmitting channel is connected to the transmitting channel of the RF transceiver. In the receiving channel, the first switching switch connects the first receiving module or the second receiving module to the receiving channel of the RF transceiver, and in the transmitting channel, the second switching switch connects the first transmitting module or the second transmitting module to the transmitting channel of the RF transceiver.

[0049] The above-mentioned receiving processing and transmitting processing include basic signal amplification processing and filtering processing. The first receiving module, the second receiving module, the first transmitting module, and the second transmitting module can be simple processing circuits composed of signal amplifiers and filters, or can be processing circuits with more functions including attenuators, temperature compensators, impedance matching, power detection, DC isolation and other functional devices. In the receiving and transmitting processing, the signal amplification processing can be performed first, and then filtering, or filtering can be performed first and then amplification. The number of amplifiers in the receiving module and the transmitting module can be one-stage amplification, two-stage amplification, or multiple-stage amplification. The first amplification module can be a low-noise amplifier, and the second amplification module can be a power amplifier. Among them, the attenuator, temperature compensator, impedance matching, power detection, DC isolation device, low-noise amplifier, and power amplifier are all prior art.

[0050] by Figure 2 The working principle of the front-end RF circuit of the present invention is described by taking the example that the first receiving module includes the first amplifying module 103 and the first filtering module 105 connected in series, the second receiving module includes the first amplifying module 103 and the second filtering module 106 connected in series, and the first transmitting module includes the second amplifying module 114 and the third filtering module 111 connected in series, and the second transmitting module includes the second amplifying module 114 and the fourth filtering module 112 connected in series. The working principle is as follows:

[0051] (1) The L-band satellite signal receiving process is as follows: the satellite communication antenna 101 (hereinafter referred to as the antenna) receives the L-band satellite signal, the channel switching switch 102 selects the receiving channel, the first amplification module 103 amplifies the received weak signal, the first switching switch 104 selects the L-band end, the second filtering module 106 filters the signal, the RF switch 107 selects the L-band end, and receives the L-band signal to the receiving channel (RX) of the RF transceiver 108. The RF transceiver converts the received signal into a baseband signal, and then transmits it to the baseband device 109 to complete signal processing and protocol processing.

[0052] (2) The L-band satellite signal transmission process is as follows: the baseband device 109 completes signal processing and protocol processing, and transmits the signal to the RF transceiver 108. The RF transceiver converts the signal into an RF signal, and transmits it to the RF switch 110 through its transmission channel (TX). The RF switch 110 selects the L-band end, the third filter module 111 filters the signal, the second switch 113 selects the L-band end, the second amplification module 114 amplifies the signal, the channel switch 102 selects the transmission channel, and the L-band satellite signal is transmitted through the antenna 101.

[0053] (3) The S-band satellite signal receiving process is as follows: the antenna 101 receives the S-band satellite signal, the channel switching switch 102 selects the receiving channel, the first amplifying module 103 amplifies the received weak signal, the first switching switch 104 selects the S-band end, the first filtering module 105 filters the signal, the RF switch 107 selects the S-band end, and receives the S-band signal to the receiving channel (RX) of the RF transceiver 108. The RF transceiver 108 converts the received signal into a baseband signal, and then transmits it to the baseband device 109 to complete signal processing and protocol processing.

[0054] (4) The S-band satellite signal transmission process is as follows: the baseband device 109 completes signal processing and protocol processing, and transmits the signal to the RF transceiver 108. The RF transceiver 108 converts the signal into an RF signal, and transmits it to the RF switch 110 through its transmission channel (TX). The RF switch 110 selects the S-band end, the fourth filter module 112 filters the signal, the second switch 113 selects the S-band end, the second amplification module 114 amplifies the signal, the channel switch 102 selects the transmission channel, and the S-band satellite signal is transmitted through the antenna 101.

[0055] In the above working process, the RF switches 110 and 107 can be omitted, and the S-band end (first receiving module) and the L-band end (second receiving module) in the receiving channel can be directly connected to the RF transceiver 108 without passing through the RF switch 107, and the first receiving module or the second receiving module is connected to the RF transceiver through the first switching switch 104. Similarly, the transmitting channel, the first transmitting module and the second transmitting module are also directly connected to the RF transceiver 108 without passing through the RF switch 110, and the first transmitting module or the second transmitting module can be connected to the RF transceiver through the second switching switch 113.

[0056] The above-mentioned switching switch is output by the GPIO pin of the baseband unit. The value of the corresponding register is set in advance in the baseband unit. The transceiver frequency band and transceiver mode are selected according to the external application mode request, and the switch is controlled by high and low levels.

[0057] In one embodiment, when the antenna is a multi-antenna or a multi-interface, the front-end RF circuit can achieve communication with a dual antenna, a dual-interface antenna, a multi-antenna or a multi-interface antenna after simple modification. Specifically, taking antenna 101 as a dual-interface antenna as an example, if the first interface of the antenna is a transceiver interface for a first RF signal, and the second interface is a transceiver interface for a second RF signal, the frequency of the first RF signal is different from that of the second RF signal. The first receiving module or the first transmitting module of the front-end RF circuit is connected to the first interface of the antenna through a channel switching switch, so that the first interface receives or transmits the first RF signal; or, the second receiving module or the second transmitting module is connected to the second interface of the antenna, so that the second interface receives or transmits the second RF signal.

[0058] like Figure 3 The figure shows a front-end RF circuit structure diagram of a dual-interface antenna. The antenna shown is a dual-interface antenna, specifically a first antenna interface 1 and a second antenna interface 2. For the two antenna interfaces, the channel switching switch 102 can be set to two RF switches, wherein the RF switch 202 is connected to the first receiving module and the first transmitting module, and the first receiving module or the first transmitting module is connected to the first antenna interface 1 by switching the switch position; the RF switch 215 is connected to the second receiving module and the second transmitting module, and the second receiving module or the second transmitting module is connected to the second antenna interface 2 by switching the switch position. In this embodiment, the configurations of the first receiving module, the second receiving module, the first transmitting module, and the second transmitting module refer to the aforementioned embodiment.

[0059] based on Figure 3 , the working principle of the front-end RF circuit is as follows:

[0060] (1) The L-band satellite signal receiving process is as follows: the antenna 101 receives the L-band satellite signal, the RF switch 215 selects the receiving channel, the low noise amplifier 203 amplifies the received weak signal, the second filter module 106 (filter) filters the signal, the RF switch 107 selects the L-band end, and receives the L-band signal to the receiving channel (RX) of the RF transceiver 108. The RF transceiver converts the received signal into a baseband signal, and then transmits it to the baseband device 109 to complete signal processing and protocol processing.

[0061] (2) The L-band satellite signal transmission process is as follows: the baseband device 109 completes signal processing and protocol processing, and transmits the signal to the RF transceiver 108. The RF transceiver converts the signal into an RF signal, and transmits it to the RF switch 110 through its transmission channel (TX). The RF switch 110 selects the L-band end, the third filter module 111 (filter) filters the signal, the power amplifier 213 amplifies the signal, and the RF switch 215 selects the transmission channel to transmit the L-band satellite signal through the antenna 101.

[0062] (3) The S-band satellite signal receiving process is as follows: the antenna 101 receives the S-band satellite signal, the RF switch 202 selects the receiving channel, the low noise amplifier 204 amplifies the received weak signal, the first filtering module 105 (filter) filters the signal, the RF switch 107 selects the S-band end, and receives the S-band signal to the receiving channel (RX) of the RF transceiver 108. The RF transceiver converts the received signal into a baseband signal, and then transmits it to the baseband device 109 to complete signal processing and protocol processing.

[0063] (4) The S-band satellite signal transmission process is as follows: the baseband device 109 completes signal processing and protocol processing, and transmits the signal to the RF transceiver 108. The RF transceiver converts the signal into an RF signal, and transmits it to the RF switch 110 through its transmission channel (TX). The RF switch 110 selects the S-band end, the fourth filter module 112 (filter) filters the signal, the power amplifier 214 amplifies the signal, and the RF switch 202 selects the transmission channel to transmit the S-band satellite signal through the antenna 101.

[0064] In the above working process, the RF switches 107 and 110 can be omitted, and the S-band end (first receiving module) and the L-band end (second receiving module) in the receiving channel can be directly connected to the RF transceiver 108 without passing through the RF switch 107. The same is true for the transmitting channel. The first transmitting module and the second transmitting module are directly connected to the RF transceiver 108 without passing through the RF switch 210. The connection between each transceiver module and the RF transceiver can be achieved by changing the position of the RF switches 202 and 215.

[0065] In a second aspect of the present invention, an antenna device is provided. Figure 4 The figure is a schematic diagram of the structure of the antenna device, including a baseband device 109, a radio frequency transceiver 108, a radio frequency front-end circuit 300 and at least one antenna 101; wherein the antenna, the radio frequency front-end circuit, the radio frequency transceiver and the baseband device are connected in sequence, and the radio frequency front-end circuit 300 is the radio frequency front-end circuit in any of the above-mentioned implementation modes, and its working principle is detailed in the description of the above-mentioned embodiment.

[0066] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A radio frequency front-end circuit, characterized in that: include: A receiving channel, connected to the RF transceiver, for receiving and processing the first RF signal or the second RF signal; The frequency of the first radio frequency signal is different from that of the second radio frequency signal; a transmitting channel, connected to the RF transceiver, and configured to transmit the first RF signal or the second RF signal; The channel switching switch is used to connect the receiving channel to the antenna to receive the first radio frequency signal or the second radio frequency signal from the antenna; or to connect the transmitting channel to the antenna to transmit the first radio frequency signal or the second radio frequency signal to the antenna.

2. The radio frequency front-end circuit according to claim 1, characterized in that: The receiving channel includes a first receiving module, a second receiving module and a first switching switch; the first receiving module is used to receive and process the first radio frequency signal; the second receiving module is used to receive and process the second radio frequency signal; the first switching switch is used to connect the first receiving module or the second receiving module to the radio frequency transceiver; The transmission channel includes a first transmission module, a second transmission module and a second switching switch; the first transmission module is used to transmit and process the first radio frequency signal; the second transmission module is used to transmit and process the second radio frequency signal; the second switching switch is used to connect the first transmission module or the second transmission module to the radio frequency transceiver.

3. The RF front-end circuit according to claim 2, characterized in that: The first receiving module at least includes a first amplifying module and a first filtering module connected in series, and the second receiving module at least includes the first amplifying module and the second filtering module connected in series; the receiving process at least includes a signal amplifying process and a filtering process.

4. The radio frequency front-end circuit according to claim 3, characterized in that: The first amplification module is a low noise amplifier.

5. The radio frequency front-end circuit according to claim 2, characterized in that: The first transmitting module at least includes a second amplifying module and a third filtering module connected in series, and the second transmitting module at least includes the second amplifying module and a fourth filtering module connected in series; the transmitting process at least includes a signal amplifying process and a filtering process.

6. The radio frequency front-end circuit according to claim 5, characterized in that: The second amplification module is a power amplifier.

7. The radio frequency front-end circuit according to claim 2, characterized in that: When the antenna has a dual interface, the channel switching switch is used to connect the first receiving module or the first transmitting module to the first interface of the antenna so that the first interface receives or transmits the first radio frequency signal; or, connect the second receiving module or the second transmitting module to the second interface of the antenna so that the second interface receives or transmits the second radio frequency signal.

8. The radio frequency front-end circuit according to any one of claims 1 to 7, characterized in that: The first radio frequency signal is a high-orbit satellite communication signal, and the second radio frequency signal is a low-orbit satellite communication signal.

9. The radio frequency front-end circuit according to claim 1, characterized in that: The receiving channel is connected to the receiving channel of the radio frequency transceiver, and the transmitting channel is connected to the transmitting channel of the radio frequency transceiver.

10. An antenna device, characterized in that: It comprises a baseband device, a radio frequency transceiver, a radio frequency front-end circuit and at least one antenna; the radio frequency front-end circuit is the radio frequency front-end circuit according to any one of claims 1 to 9.

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