Multi-frequency signal coexistence apparatus and electronic device

Abstract

A multi-frequency signal coexistence device comprises: a first signal channel electrically connected between a first radio frequency front-end module and an antenna, configured to receive a signal of a first frequency band output by the first radio frequency front-end module, the first signal channel comprising a first filter selection unit; and a second signal channel electrically connected between a second radio frequency front-end module and the antenna, configured to receive a signal of a second frequency band output by the second radio frequency front-end module, the second signal channel comprising a second filter selection unit; the first filter selection unit selects a corresponding filter according to a frequency band of the signal output by the first radio frequency front-end module and a frequency band of the signal output by the second radio frequency front-end module, and the second filter selection unit selects a corresponding filter according to a frequency band of the signal output by the first radio frequency front-end module and a frequency band of the signal output by the second radio frequency front-end module, so as to avoid signal interference between channels and realize multi-frequency signal coexistence. The application further provides an electronic device comprising the multi-frequency signal coexistence device.

Description

Technical Field

[0001] This invention relates to the field of antenna technology, and in particular to a multi-frequency signal coexistence device and electronic device. Background Technology

[0002] With the popularization of network communication devices and the advancement of WiFi technology, more and more existing products support WiFi 6 E / 7. Unlike WiFi 6, WiFi 6 E / 7 also supports the 6G band, which has greater bandwidth and faster transmission speed. However, most 5G currently only uses the UNII3 band. Because the UNII4 band is too close to the 6G band, in order to prevent the UNII4 band of WiFi 5G from interfering with the 6G band, the UNII4 band of 5G has to be sacrificed. Summary of the Invention

[0003] In view of this, the present invention provides a multi-frequency signal coexistence device and a multi-frequency signal coexistence device that covers the use of all channels as much as possible, and improves the coexistence of WiFi 5G and 6G.

[0004] This invention provides a multi-frequency signal coexistence device, comprising: a first signal channel electrically connected between a first radio frequency front-end module and an antenna, for receiving signals of a first frequency band output by the first radio frequency front-end module, the first signal channel including a first filter selection unit; and a second signal channel electrically connected between a second radio frequency front-end module and the antenna, for receiving signals of a second frequency band output by the second radio frequency front-end module, the second signal channel including a second filter selection unit. The first filter selection unit is configured to select a corresponding filter to connect the first radio frequency front-end module and the antenna based on the frequency band of the signals output by the first and second radio frequency front-end modules. The filter selection unit is also configured to select a corresponding filter to connect the second radio frequency front-end module and the antenna based on the frequency band of the signals output by the first and second radio frequency front-end modules.

[0005] Preferably, the first filter selection unit includes: a first radio frequency switch, including a common terminal, a first terminal, and a second terminal, wherein the common terminal of the first radio frequency switch is electrically connected to the first radio frequency front-end module; a first filter, operating in the full frequency band of the first frequency band, wherein the input terminal of the first filter is electrically connected to the first terminal of the first radio frequency switch; a second filter, operating in a portion of the first frequency band, wherein the input terminal of the second filter is electrically connected to the second terminal of the first radio frequency switch; and a second radio frequency switch, including a common terminal, a first terminal, and a second terminal, wherein the common terminal of the second radio frequency switch is electrically connected to the antenna, the first terminal of the second radio frequency switch is electrically connected to the output terminal of the first filter, and the second terminal of the second radio frequency switch is electrically connected to the output terminal of the second filter.

[0006] Preferably, the second filter selection unit includes: a third RF switch, including a common terminal, a first terminal, and a second terminal, the common terminal of the third RF switch being electrically connected to the second front-end module; a third filter, operating in the full frequency band of the second frequency band, the input terminal of the third filter being electrically connected to the first terminal of the third RF switch; a fourth filter, operating in a portion of the second frequency band, the input terminal of the fourth filter being electrically connected to the second terminal of the third RF switch; and a fourth RF switch, including a common terminal, a first terminal, and a second terminal, the common terminal of the fourth RF switch being electrically connected to the antenna, the first terminal of the fourth RF switch being electrically connected to the output terminal of the third filter, and the second terminal of the fourth RF switch being electrically connected to the output terminal of the fourth filter.

[0007] Preferably, when the frequency band of the signal output by the first RF front-end module is the interference band of the second frequency band, the first RF switch and the second RF switch select the first filter to connect the first RF front-end module and the antenna, and the third RF switch and the fourth RF switch select the fourth filter to connect the second RF front-end module and the antenna.

[0008] Preferably, when the frequency band of the signal output by the first RF front-end module is not the interference band of the second frequency band, the first RF switch and the second RF switch select the second filter to connect the first RF front-end module and the antenna, and the third RF switch and the fourth RF switch select the third filter to connect the second RF front-end module and the antenna.

[0009] Preferably, the first filter selection unit includes: a fifth filter, operating in the full frequency band of the first frequency band, the input terminal of the fifth filter being electrically connected to the first RF front-end module; a fifth RF switch, including a common terminal, a first terminal, and a second terminal, the common terminal of the fifth RF switch being electrically connected to the output terminal of the fifth filter; a sixth filter, the input terminal of the sixth filter being electrically connected to the first terminal of the fifth RF switch; and a sixth RF switch, including a common terminal, a first terminal, and a second terminal, the common terminal of the sixth RF switch being electrically connected to the antenna, the first terminal of the sixth RF switch being electrically connected to the output terminal of the sixth filter, and the second terminal of the sixth RF switch being electrically connected to the second terminal of the fifth RF switch.

[0010] Preferably, the second filter selection unit includes: a seventh filter, operating in the full frequency band of the second frequency band, the input terminal of the seventh filter being electrically connected to the second RF front-end module; a seventh RF switch, including a common terminal, a first terminal, and a second terminal, the common terminal of the seventh RF switch being electrically connected to the output terminal of the seventh filter; an eighth filter, operating in the full frequency band of the second frequency band, the input terminal of the eighth filter being electrically connected to the first terminal of the seventh RF switch; and an eighth RF switch, including a common terminal, a first terminal, and a second terminal, the common terminal of the eighth RF switch being electrically connected to the antenna, the first terminal of the eighth RF switch being electrically connected to the output terminal of the eighth filter, and the second terminal of the eighth RF switch being electrically connected to the second terminal of the seventh RF switch.

[0011] Preferably, when the frequency band of the signal output by the first RF front-end module is the interference frequency band of the signal output by the second RF front-end module, the fifth RF switch and the sixth RF switch select the sixth filter to connect the first RF front-end module and the antenna, and the seventh RF switch and the eighth RF switch select the eighth filter to connect the second RF front-end module and the antenna.

[0012] Preferably, when the frequency band of the signal output by the first RF front-end module is not the interference frequency band of the signal output by the second RF front-end module, the fifth RF switch and the sixth RF switch connect the first RF front-end module and the antenna, and the seventh RF switch and the eighth RF switch connect the second RF front-end module and the antenna.

[0013] The present invention provides an electronic device including the multi-frequency signal coexistence device described in any one of the above claims.

[0014] Compared to existing technologies, the multi-frequency signal coexistence device of the present invention transmits signals of the first frequency band in the first signal channel and includes a first filter selection unit, and transmits signals of the second frequency band in the second signal channel and includes a second filter selection unit. By using the first filter selection unit and the second filter selection unit to select and turn on the corresponding filter according to the frequency band of the signal output by the first RF front-end module and the frequency band of the signal output by the second RF front-end module, the mutual interference between the signals of the first signal channel and the second signal channel is avoided, thereby achieving multi-frequency signal coexistence. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a multi-frequency signal coexistence device according to a first embodiment of the present invention.

[0016] Figure 2 This is a schematic diagram of a multi-frequency signal coexistence device according to a second embodiment of the present invention.

[0017] Explanation of main component symbols Multi-frequency signal coexistence device 1 First signal channels 10, 10a Second signal channels 20, 20a First radio frequency front end 2 Antenna 3 Second RF front-end module 4 First filter selection units 100, 100a Second filter selection units 200, 200a First RF switch - Eighth RF switch S1-S8 First Filter - Eighth Filter F1-F8 The following detailed description, in conjunction with the accompanying drawings, will further illustrate the present invention. Detailed Implementation

[0018] To facilitate understanding and implementation of this invention by those skilled in the art, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that this invention provides many applicable inventive concepts, which can be implemented in various specific forms. Those skilled in the art can utilize the details described in these or other embodiments, as well as other available structural, logical, and electrical variations, to implement the invention without departing from its spirit and scope.

[0019] This specification provides different embodiments to illustrate the technical features of different implementations of the invention. The configuration of elements in the embodiments is for illustrative purposes only and is not intended to limit the invention. Furthermore, the repetition of some reference numerals in the embodiments is for simplification and does not imply any correlation between different embodiments. The same element numbers used in the illustrations and specification represent the same or similar components. The illustrations in this specification are simplified and not drawn to scale.

[0020] Furthermore, in describing some embodiments of the present invention, the specification describes the method and / or procedure of the present invention in a specific order of steps. However, since the method and procedure are not necessarily performed according to the specific order of steps described, they are not limited to the specific order of steps. Those skilled in the art will understand that other orders are also possible implementations. Therefore, the specific order of steps described in the specification is not intended to limit the scope of the patent application. Moreover, the scope of the present invention for the method and / or procedure is not limited to the order of execution steps written therein, and those skilled in the art will understand that adjusting the order of execution steps does not depart from the spirit and scope of the present invention.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. Some embodiments of the invention are described in detail below with reference to the accompanying drawings.

[0022] Please see Figure 1 , Figure 1 This is a schematic diagram of a multi-frequency signal coexistence device according to a first embodiment of the present invention. The multi-frequency signal coexistence device 1 is applied to multi-frequency network communication electronic devices, and may include electronic devices such as mobile phones, smartphones, laptops, tablet computers (PADs), etc. In this embodiment, as... Figure 1As shown, the multi-frequency signal coexistence device 1 includes a first signal channel 10 and a second signal channel 20. The first signal channel 10 is used to transmit signals in a first frequency band, and the second signal channel 20 is used to transmit signals in a second frequency band. Specifically, the first signal channel 10 is electrically connected between the first RF front-end module 2 and the antenna 3, and is used to receive signals in the first frequency band output by the first RF front-end module 2. The first signal channel 10 includes a first filter selection unit 100. The second signal channel 20 is electrically connected between the second RF front-end module 4 and the antenna 3, and is used to receive signals in the second frequency band output by the second RF front-end module 4. The second signal channel 20 includes a second filter selection unit 200. The first filter selection unit 100 is used to select a corresponding filter to connect the first RF front-end module 2 and the antenna 3 according to the frequency band of the signals output by the first RF front-end module 3 and the second RF front-end module 4, and the second filter selection unit 200 is used to select a corresponding filter to connect the second RF front-end module 4 and the antenna 3 according to the frequency band of the signals output by the first RF front-end module 3 and the second RF front-end module 4.

[0023] In this embodiment, the first filter selection unit 100 includes a first RF switch S1, a first filter F1, a second filter F2, and a second RF switch S2. The first RF switch S1 includes a common terminal, a first terminal, and a second terminal, with the common terminal electrically connected to the first RF front-end module 2. The first filter F1 operates in the full frequency band of the first frequency band, and its input terminal is electrically connected to the first terminal of the first RF switch S1. The second filter F2 operates in a portion of the first frequency band, with its input terminal electrically connected to the second terminal of the first RF switch S1. The second RF switch S2 includes a common terminal, a first terminal, and a second terminal, with the common terminal electrically connected to the antenna 3, the first terminal electrically connected to the output terminal of the first filter F1, and the second terminal electrically connected to the output terminal of the second filter F2. The second filter selection unit 200 includes a third RF switch S3, a third filter F3, a fourth filter F4, and a fourth RF switch S4. The third RF switch S3 includes a common terminal, a first terminal, and a second terminal. The common terminal of the third RF switch S3 is electrically connected to the second front-end module 4. The third filter F3 operates in the full frequency band of the second frequency band. The input terminal of the third filter F3 is electrically connected to the first terminal of the third RF switch F3. The fourth filter F4 operates in a portion of the second frequency band. The input terminal of the fourth filter F4 is electrically connected to the second terminal of the third RF switch S3. The fourth RF switch S4 includes a common terminal, a first terminal, and a second terminal. The common terminal of the fourth RF switch S4 is electrically connected to the antenna 3. The first terminal of the fourth RF switch S4 is electrically connected to the output terminal of the third filter F3, and the second terminal of the fourth RF switch S4 is electrically connected to the output terminal of the fourth filter F4.

[0024] Parts of the first frequency band are close to parts of the second frequency band, which can easily cause interference. When the frequency band of the signal output by the first RF front-end module 2 is an interference band of the second frequency band, the first RF switch S1 and the second RF switch S2 select the first filter F1 to connect the first RF front-end module 2 and the antenna 2, and the third RF switch S3 and the fourth RF switch S4 select the fourth filter F4 to connect the second RF front-end module 4 and the antenna 3. When the frequency band of the signal output by the first RF front-end module 2 is not an interference band of the second frequency band, the first RF switch S1 and the second RF switch S2 select the second filter F2 to connect the first RF front-end module 2 and the antenna 3, and the third RF switch S3 and the fourth RF switch S4 select the third filter F3 to connect the second RF front-end module 4 and the antenna 3.

[0025] In a specific embodiment of the present invention, the first signal channel 10 transmits 5G signals, and the first frequency band is WiFi 5G. The second signal channel 20 transmits 6G signals, and the second frequency band is WiFi 6G. The UNII4 band of WiFi 5G is close to the CH1-CH32 band of WiFi 6G. Currently, to prevent mutual interference between the WiFi 5G and WiFi 6G bands, most network devices only use the UNII3 band for WiFi 5G to prevent mutual interference. In this embodiment, the first filter F1 is a bandpass filter with an operating frequency band of UNII1-UNII4, the second filter F2 is a bandpass filter with an operating frequency band of UNII1-UNII3, the third filter F3 is a bandpass filter with an operating frequency band of CH1-CH233, and the fourth filter F4 is a bandpass filter with an operating frequency band of CH33-CH233. When the frequency band of the signal output by the first RF front-end module 2 is UNII4, the signal of the UNII4 frequency band will interfere with the signal of the CH1-CH32 frequency band of the 6G frequency band. The first RF switch S1 and the second RF switch S2 select the first filter F1 (operating frequency band is UNII1-UNII4) to connect the first RF front-end module 2 and the antenna 2. The third RF switch S3 and the fourth RF switch S4 select the fourth filter F4 (operating frequency band is CH33-CH233) to connect the second RF front-end module 4 and the antenna 3.

[0026] When the frequency band of the signal output by the first RF front-end module 2 is not the UNII4 band, it will not interfere with the 6G band signal. At this time, the first RF switch S1 and the second RF switch S2 select the second filter F2 (operating frequency band is UNII1-UNII3) to connect the first RF front-end module 2 and the antenna 3. The third RF switch S3 and the fourth RF switch S4 select the third filter F3 (operating frequency band is CH1-CH233) to connect the second RF front-end module 4 and the antenna 3.

[0027] Please see Figure 2 , Figure 2 This is a schematic diagram of a multi-frequency signal coexistence device according to a second embodiment of the present invention. Figure 2 As shown, the multi-frequency signal coexistence device 1 includes a first signal channel 10a and a second signal channel 20a. The working principle of the first signal channel 10a and the second signal channel 20a is similar to that of the first signal channel 10a and the second signal channel 20a in the above embodiment, and will not be described again here.

[0028] In this embodiment, the first signal channel 10a includes a first filter selection unit 100a, which includes a fifth filter F5, a fifth RF switch S5, a sixth filter F6, and a sixth RF switch S6. The fifth filter F5 operates across the entire first frequency band, and its input is electrically connected to the first RF front-end module 2. The fifth RF switch S5 includes a common terminal, a first terminal, and a second terminal, with its common terminal electrically connected to the output of the fifth filter F5. The input of the sixth filter S6 is electrically connected to the first terminal of the fifth RF switch S5. The sixth RF switch S6 includes a common terminal, a first terminal, and a second terminal, with its common terminal electrically connected to the antenna 3, its first terminal electrically connected to the output of the sixth filter F6, and its second terminal electrically connected to the second terminal of the fifth RF switch S5. The second signal channel 20a includes a second filter selection unit 200a, which is used to select the corresponding filter according to the frequency band of the signal output by the first RF front-end module 2 to connect the second RF front-end module 4 and the antenna 3.

[0029] In this embodiment, when the frequency band of the signal output by the first RF front-end module 2 is the interference band of the signal output by the second RF front-end module 4, the fifth RF switch S5 and the sixth RF switch S6 select the sixth filter to connect the first RF front-end module 2 and the antenna 3. At this time, the fifth filter F5 and the sixth filter are connected in series between the first RF front-end module 2 and the antenna 3. The seventh RF switch S7 and the eighth RF switch S8 select the eighth filter F8 to connect the second RF front-end module 4 and the antenna 3. At this time, the seventh filter F7 and the eighth filter F8 are connected in series between the second RF front-end module 4 and the antenna 3. The two series filters improve the suppression of signals outside the passband, avoiding signal interference between the first signal channel 10 and the second signal channel 20. When the frequency band of the signal output by the first RF front-end module 2 is not the interference band of the signal output by the second RF front-end module 4, the fifth RF switch S5 and the sixth RF switch S6 connect the first RF front-end module 2 and the antenna 3, and the third RF switch S3 and the fourth RF switch S4 connect the second RF front-end module 4 and the antenna 3.

[0030] In a specific embodiment of the present invention, the first signal channel 10a transmits a 5G signal, with the first frequency band being WiFi 5G. The second signal channel 20a transmits a 6G signal, with the second frequency band being WiFi 6G. In this embodiment, the fifth filter F5 and the sixth filter F6 are bandpass filters, both operating in the UNII1-UNII4 frequency band. The seventh filter F7 and the eighth filter F8 are bandpass filters, both operating in the CH1-CH233 frequency band.

[0031] In this embodiment, when the frequency band of the signal output by the first RF front-end module 2 is UNII4 and the frequency band of the signal output by the second RF front-end module 4 is CH1-CH32, the signal in the UNII4 band will interfere with the signal in the CH1-CH32 band of 6G. The fifth RF switch S5 and the sixth RF switch S6 select the fifth filter F5 (operating frequency band UNII1-UNII4) to connect the first RF front-end module 2 and the antenna 3. At this time, the fifth filter F5 and the sixth filter are connected in series between the first RF front-end module 2 and the antenna 3. The out-of-band rejection after the filters are connected in series reaches 100dB; the seventh RF switch S7 and the eighth RF switch S8 select the seventh filter F4 (operating frequency band CH1-CH233) to connect the second RF front-end module 4 and the antenna 3. At this time, the seventh filter F7 and the eighth filter F8 are connected in series between the second RF front-end module 4 and the antenna 3. The out-of-band rejection after the seventh filter F7 and the eighth filter F8 are connected in series reaches 80dB. The two series filters improve the suppression of signals outside the passband and avoid signal interference between the first signal channel 10a and the second signal channel 20a.

[0032] In this embodiment, when the frequency band of the signal output by the second RF front-end module 3 is not CH1-CH32, the signals between the first signal channel 10a and the second signal channel 20a will not interfere with each other. Then, the fifth RF switch S5 and the sixth RF switch S6 are connected to the first RF front-end module 2 and the antenna 3. At this time, the fifth filter F5 is electrically connected between the first RF front-end module 2 and the antenna 3, and the out-of-band rejection of the fifth filter F5 reaches 50dB. The seventh RF switch S7 and the eighth RF switch S8 are connected to the second RF front-end module 4 and the antenna 3. At this time, the seventh filter F7 is electrically connected between the second RF front-end module 4 and the antenna 3, and the out-of-band rejection of the seventh filter F7 reaches 40dB.

[0033] In both the first and second embodiments of the present invention, the first and second signal channels select appropriate filters based on the frequency bands of the signals output by the first RF front-end module 2 and the second RF front-end module 4 to achieve coexistence of WiFi 5G and WiFi 6G. The structures of the first and second signal channels in the second embodiment are different from those in the first embodiment because different countries use different 5G / 6G frequency bands, which can be determined according to requirements in practical applications.

[0034] Compared to existing technologies, the multi-frequency signal coexistence device of the present invention transmits signals of the first frequency band in the first signal channel and includes a first filter selection unit, and transmits signals of the second frequency band in the second signal channel and includes a second filter selection unit. By using the first filter selection unit and the second filter selection unit to select and turn on the corresponding filter according to the frequency band of the signal output by the first RF front-end module and the frequency band of the signal output by the second RF front-end module, the mutual interference between the signals of the first signal channel and the second signal channel is avoided, thereby achieving multi-frequency signal coexistence.

[0035] Those skilled in the art should recognize that the above embodiments are merely illustrative of the present invention and are not intended to limit the present invention. Any appropriate changes and modifications made to the above embodiments within the essential spirit and scope of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A multi-frequency signal coexistence device, characterized in that, include: A first signal channel is electrically connected between the first radio frequency front-end module and the antenna, and is used to receive signals in the first frequency band output by the first radio frequency front-end module. The first signal channel includes a first filter selection unit. The second signal channel is electrically connected between the second RF front-end module and the antenna, and is used to receive the signal of the second frequency band output by the second RF front-end module. The second signal channel includes a second filter selection unit, wherein the first filter selection unit is used to select a corresponding filter to connect the first RF front-end module and the antenna according to the frequency band of the signal output by the first RF front-end module and the frequency band of the signal output by the second RF front-end module, and the second filter selection unit is used to select a corresponding filter to connect the second RF front-end module and the antenna according to the frequency band of the signal output by the first RF front-end module and the frequency band of the signal output by the second RF front-end module.

2. The multi-frequency signal coexistence device as described in claim 1, characterized in that, The first filter selection unit includes: The first radio frequency switch includes a common terminal, a first terminal and a second terminal, wherein the common terminal of the first radio frequency switch is electrically connected to the first radio frequency front-end module; The first filter operates in the full frequency band of the first frequency band, and its input terminal is electrically connected to the first terminal of the first radio frequency switch. The second filter operates in a portion of the first frequency band, and its input terminal is electrically connected to the second terminal of the first RF switch. The second radio frequency switch includes a common terminal, a first terminal, and a second terminal. The common terminal of the second radio frequency switch is electrically connected to the antenna, the first terminal of the second radio frequency switch is electrically connected to the output terminal of the first filter, and the second terminal of the second radio frequency switch is electrically connected to the output terminal of the second filter.

3. The multi-frequency signal coexistence device as described in claim 2, characterized in that, The second filter selection unit includes: The third radio frequency switch includes a common terminal, a first terminal, and a second terminal, wherein the common terminal of the third radio frequency switch is electrically connected to the second front-end module; The third filter operates in the full frequency band of the second frequency band, and the input terminal of the third filter is electrically connected to the first terminal of the third radio frequency switch. The fourth filter operates in a portion of the second frequency band, and its input terminal is electrically connected to the second terminal of the third RF switch. The fourth radio frequency switch includes a common terminal, a first terminal, and a second terminal. The common terminal of the fourth radio frequency switch is electrically connected to the antenna, the first terminal of the fourth radio frequency switch is electrically connected to the output terminal of the third filter, and the second terminal of the fourth radio frequency switch is electrically connected to the output terminal of the fourth filter.

4. The multi-frequency signal coexistence device as described in claim 3, characterized in that: When the frequency band of the signal output by the first RF front-end module is the interference band of the second frequency band, the first RF switch and the second RF switch select the first filter to connect the first RF front-end module and the antenna, and the third RF switch and the fourth RF switch select the fourth filter to connect the second RF front-end module and the antenna.

5. The multi-frequency signal coexistence device as described in claim 3, characterized in that: When the frequency band of the signal output by the first RF front-end module is not the interference band of the second frequency band, the first RF switch and the second RF switch select the second filter to connect the first RF front-end module and the antenna, and the third RF switch and the fourth RF switch select the third filter to connect the second RF front-end module and the antenna.

6. The multi-frequency signal coexistence device as described in claim 1, characterized in that, The first filter selection unit includes: The fifth filter operates in the full frequency band of the first frequency band, and its input terminal is electrically connected to the first radio frequency front-end module. The fifth radio frequency switch includes a common terminal, a first terminal, and a second terminal, wherein the common terminal of the fifth radio frequency switch is electrically connected to the output terminal of the fifth filter; The sixth filter, the input terminal of which is electrically connected to the first terminal of the fifth radio frequency switch; The sixth radio frequency switch includes a common terminal, a first terminal, and a second terminal. The common terminal of the sixth radio frequency switch is electrically connected to the antenna, the first terminal of the sixth radio frequency switch is electrically connected to the output terminal of the sixth filter, and the second terminal of the sixth radio frequency switch is electrically connected to the second terminal of the fifth radio frequency switch.

7. The multi-frequency signal coexistence device as described in claim 6, characterized in that, The second filter selection unit includes: The seventh filter operates in the full frequency band of the second frequency band, and its input terminal is electrically connected to the second RF front-end module. A seventh radio frequency switch includes a common terminal, a first terminal, and a second terminal, wherein the common terminal of the seventh radio frequency switch is electrically connected to the output terminal of the seventh filter; The eighth filter operates in the full frequency band of the second frequency band, and its input terminal is electrically connected to the first terminal of the seventh radio frequency switch. The eighth radio frequency switch includes a common terminal, a first terminal, and a second terminal. The common terminal of the eighth radio frequency switch is electrically connected to the antenna, the first terminal of the eighth radio frequency switch is electrically connected to the output terminal of the eighth filter, and the second terminal of the eighth radio frequency switch is electrically connected to the second terminal of the seventh radio frequency switch.

8. The multi-frequency signal coexistence device as described in claim 7, characterized in that, When the frequency band of the signal output by the first RF front-end module is the interference frequency band of the signal output by the second RF front-end module, the fifth RF switch and the sixth RF switch select the sixth filter to connect the first RF front-end module and the antenna, and the seventh RF switch and the eighth RF switch select the eighth filter to connect the second RF front-end module and the antenna.

9. The multi-frequency signal coexistence device as described in claim 7, characterized in that, When the frequency band of the signal output by the first RF front-end module is not the interference frequency band of the signal output by the second RF front-end module, the fifth RF switch and the sixth RF switch connect the first RF front-end module and the antenna, and the seventh RF switch and the eighth RF switch connect the second RF front-end module and the antenna.

10. An electronic device, characterized in that, Includes the multi-frequency signal coexistence device as described in any one of claims 1-9.

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