Filtering antenna and communication equipment

Abstract

The invention provides a filtering antenna and communication equipment, and the filtering antenna comprises a first radiator which is provided with a first signal feed point and a first feed ground point at an interval; the first filtering assembly is connected with the first signal feed point; the circuit board is provided with a second signal feed point, and the first filtering assembly is further coupled with the second signal feed point; a first ground feeding point is arranged on the circuit board, a second ground feeding point is arranged on the circuit board, and the first flat plate part is detachably connected with the first ground feeding point and the second ground feeding point. Through the above mode, the first radiator is prevented from being interfered by other antennas, the stability of receiving or sending signals of the filtering antenna is effectively improved, and thus the performance of the filtering antenna is improved.

Description

Technical Field

[0001] The present application is applied to the technical field of communications, and in particular relates to a filtering antenna and a communication device. Background Art

[0002] With the gradual development of science and technology, various electronic products have also developed rapidly. Most smart mobile devices are equipped with antennas to receive or send signals. However, the number of antennas installed on existing smart mobile devices is large, and they are easily interfered when receiving or sending signals.

[0003] However, in the existing technology, in order to solve the interference between antennas, antennas in the same frequency band are generally staggered when setting antennas in the product to achieve isolation in space, or filters are added to the back-end RF transmission path to achieve isolation, or brackets are added near the antenna radiator or slots are cut on the antenna radiator to form a band-stop structure. However, the above solutions increase the volume occupied by the antenna and cannot achieve the required filtering effect. Summary of the Invention

[0004] The present application provides a filtering antenna to solve the problem in the prior art that antennas are easily interfered with when transmitting signals.

[0005] In order to solve the above technical problems, the first aspect of the present application provides a filtering antenna, including: a first radiator, the first radiator having a first signal feeding point and a first feeding point arranged at intervals; a first filtering component, connected to the first signal feeding point; a circuit board, the circuit board having a second signal feeding point, the first filtering component is also coupled to the second signal feeding point; a first flat plate portion, a second feeding point is arranged on the circuit board, and the first flat plate portion is detachably connected to the first feeding point and the second feeding point.

[0006] The first filter assembly includes at least three connecting members spaced side by side, the connecting members are bent structures, and the connecting members include metal sheets.

[0007] The connecting member includes multiple first parts and second parts, the first parts are perpendicular to the second parts, the first parts are staggered with the second parts, and the first part or the second part at the end is connected to the first signal feeding point or the second signal feeding point.

[0008] Wherein, an elastic member is provided at the end of the first part or the second part of the connecting member, and the elastic member is detachably connected to the first signal feeding point and the second signal feeding point respectively.

[0009] The circuit board includes a signal processing component, which is coupled to the connector.

[0010] Wherein, a ground feed switch is provided on the circuit board, and the ground feed switch is coupled to the first flat plate portion.

[0011] The spacing between the connecting parts is 0.5mm to 1mm.

[0012] The filtering antenna further includes: a second radiator, the second radiator being provided with a third signal feeding point and a third feeding point at intervals; and a second filtering component connected to the third signal feeding point.

[0013] Among them, the circuit board has a fourth signal feeding point, and the second filtering component is also coupled to the fourth signal feeding point; the second flat plate part, the circuit board has a fourth feeding point, and the second flat plate part is detachably connected to the third signal feeding point and the fourth feeding point.

[0014] To solve the above problems, the present application also provides a communication device, including: a filtering antenna, the filtering antenna is arranged in the communication device, and the filtering antenna is any one of the filtering antennas mentioned above.

[0015] The beneficial effects of the present application are: different from the existing technology, the present application sets a first signal feeding point on the first radiator and a second signal feeding point on the circuit board, and detachably connects the first filtering component to the first signal feeding point and the second signal feeding point, thereby reducing the volume occupied by the filtering antenna, and when the first radiator sends or receives a signal, the signal can be filtered by the first filtering component, thereby avoiding interference of the first radiator by other antennas, effectively improving the stability of the receiving or sending signal of the filtering antenna, and thus improving the performance of the filtering antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of an embodiment of the filtering antenna of the present application;

[0017] Figure 2 This is a structural diagram of an embodiment of the first filtering component of the filtering antenna of the present application;

[0018] Figure 3 It is a structural diagram of another embodiment of the filtering antenna of the present application;

[0019] Figure 4 This is a schematic diagram of the structure of the connection between the first radiator and the second radiator of the present application. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0021] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0022] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0023] See also Figure 1 , Figure 1 It is a structural diagram of the filtering antenna provided in this application.

[0024] The present application provides a filtering antenna. Figure 1 As shown, the filtering antenna of this embodiment includes: a first radiator 10, a first filtering component 30, a circuit board 40 and a first flat portion 501. The first radiator 10 has a first signal feeding point 101 and a first feeding point 102 arranged at intervals. The first filtering component 30 is connected to the first signal feeding point 101. The circuit board 40 has a second signal feeding point 401, and the first filtering component 30 is also coupled to the second signal feeding point 401. A second feeding point 402 is provided on the circuit board 40, and the first flat portion 501 is detachably connected to the first feeding point 102 and the second feeding point 402. The first signal feeding point 101 is used to transmit the signal received by the first radiator 10 to the circuit board 40 through the filtering component, or to transmit the signal of the circuit board 40 to the first radiator 10 through the first signal feeding point 101. The circuit board 40 is integrated with baseband and radio frequency signals.

[0025] In an optional embodiment, a first filter assembly 30 is connected to the first signal feed point 101 of the first radiator 10. The first filter assembly 30 is connected to the second signal feed point 401 of the circuit board 40. After the first radiator 10 receives a signal, the first filter assembly 30 filters the signal, thereby transmitting the desired signal to the circuit board 40. When the circuit board 40 transmits the signal, the circuit board 40 filters the signal through the first filter assembly 30, thereby transmitting the desired signal to the first radiator 10, and the signal is then transmitted through the radiator. A first feeding point 102 is provided on the first radiator 10, and a second feeding point 402 is provided on the circuit board 40. The first flat plate portion 501 connects the first feeding point 102 and the second feeding point 402. When the signal is transmitted or output, it is grounded through the first feeding point 102 and the second feeding point 402, thereby protecting the first radiator 10 and the circuit board 40.

[0026] In this embodiment, the first filter component 30 is detachably connected to the first signal feed point 101 of the first radiator 10 and the second signal feed point 401 of the circuit board 40. When the first filter component 30 is connected, the first filter component 30 can be fixed to the first signal feed point 101 and the second signal feed point 401 by snapping or plugging, thereby facilitating the installation and replacement of the first filter component 30. In other embodiments, the first filter component 30 can also be fixedly set on the first signal feed point 101 and the second signal feed point 401, which is not specifically limited in this application. Disposing the first filter component 30 between the first radiator 10 and the circuit board 40 can reduce the volume occupied by the filter antenna, and when the filter antenna is set in the product, the layout capability of the product is increased.

[0027] In a specific application scenario, the filtering antenna is set in a mobile device. Since other antennas are also set in the mobile device, and the first radiator 10 is easily interfered with by the signals transmitted by other antennas when transmitting or receiving signals. When the first radiator 10 receives a signal, the first radiator 10 transmits the signal to the first filter component 30 through the first signal feed point 101. The first filter component 30 filters the received signal and transmits it to the circuit board 40 through the second signal feed point 401. When the circuit board 40 sends a signal, it is transmitted to the first filter component 30 through the second signal feed point 401, and the signal transmitted by the circuit board 40 is filtered and transmitted to the first radiator 10 through the first signal feed point 101. This can effectively avoid interference with the signals transmitted by other antennas when the first radiator 10 transmits a signal, and avoid interference with the signals transmitted by other antennas on the signals transmitted by the first radiator 10.

[0028] In the above manner, by setting a first signal feed point 101 on the first radiator 10 and setting a second signal feed point 401 on the circuit board 40, the first filter component 30 is detachably connected to the first signal feed point 101 and the second signal feed point 401, thereby reducing the volume occupied by the filter antenna. When the first radiator 10 sends or receives a signal, the signal can be filtered by the first filter component 30, thereby avoiding interference from other antennas to the first radiator 10, effectively improving the stability of the filter antenna in receiving or sending signals, and thus improving the performance of the filter antenna.

[0029] In an optional embodiment, the first filter assembly 30 includes at least three connectors 306 spaced side by side, the connector 306 is a bent structure, and the connector 306 includes a metal sheet. The first filter assembly 30 may include three connectors 306 spaced side by side. Figure 2 As shown, connector 306 includes a first connector 301, a second connector 302, and a third connector 303. One end of first connector 301 is connected to first signal feed point 101 of first radiator 10, and the end of first connector 301 is detachably connected to first signal feed point 101. Third connector 303, at an end away from the first connection to first signal feed point 101, is coupled to second signal feed point 401. Second connector 302 and the third connector are not coupled to first signal feed point 101, while first connector 301 and the second connector are not coupled to second signal feed point 401. Second connector 302 is spaced apart between first connector 301 and third connector 303. In other words, first connector 301, second connector 302, and third connector 303 form a capacitor and inductor. By varying the lengths of first connector 301, second connector 302, and third connector 303, the inductance can be varied. The longer connector 306 is, the greater the inductance. That is, by changing the length of connector 306, the filtering effect of connector 306 is improved. The specific length of connector 306 is set according to actual market demand and is not specifically limited in this application. Connector 306 has a curved structure, which can reduce the space occupied by connector 306 when it is snapped or plugged into first signal feed point 101 or second signal feed point 401. When the filter assembly is placed inside the product, the space occupied by connector 306 is reduced, thereby reducing the space occupied by the filter antenna and improving the product's own layout capabilities.

[0030] In other embodiments, the connecting member 306 may be in an arc shape, or in other space-saving shapes, such as an L-shape, etc., which is not specifically limited in this application.

[0031] In this embodiment, the spacing between the connectors 306 is 0.5 mm to 1 mm. The first connector 301, the second connector 302, and the third connector 303 form a flat plate capacitor. The smaller the spacing between the first connector 301, the second connector 302, and the third connector 303, the greater the capacitance, and the larger the spacing, the smaller the capacitance. Thus, by changing the spacing between the first connector 301, the second connector 302, and the third connector 303, the filtering effect of the connector 306 can be changed. The spacing between the connectors 306 can also be 0.4 mm, thereby improving the filtering effect of the connector 306. This is not specifically limited in this application.

[0032] In an optional embodiment, if Figure 2 As shown, the connector 306 includes multiple first portions 304 and second portions 305, which are perpendicular to each other and interlaced with each other. The first portion 304 or second portion 305 at the end is connected to the first signal feed point 101 or the second signal feed point 401. That is, the first connector 301, the second connector 302, and the third connector 303 are each provided with multiple first portions 304 and second portions 305, which are perpendicular to each other. This effectively reduces the space occupied by the connector 306. The interlaced connection of the first portion 304 and the second portion 305 forms a parallel plate capacitor between the connectors 306. By varying the length of the interlaced connection between the first portion 304 and the second portion 305 or the spacing between the first portion 304 and the second portion 305 of different connectors 306, the filtering effect of the connector 306 can be controlled. When the first filter assembly 30 is plugged into the first radiator 10 and the circuit board 40, the ends of the first portion 304 and the second portion 305 are connected to the first signal feed point 101 or the second signal feed point 401. The first portion 304 of the connector 306 can be perpendicular to the first radiator 10, while the second portion 305 is parallel to the first radiator 10. Alternatively, the first portion 304 can be parallel to the first radiator 10, while the second portion 305 is perpendicular to the first radiator 10.

[0033] In other embodiments, Figure 1 As shown, the connectors 306 can be arranged in parallel and spaced apart. The filtering effect of the first filter assembly 30 can be changed by changing the length of the connectors 306 , or by changing the spacing between the connectors 306 .

[0034] In an optional embodiment, if Figure 2As shown, an elastic member 601 is provided at the end of the first portion 304 or the second portion 305 of the connector 306. The elastic member 601 is detachably connected to the first signal feed point 101 and the second signal feed point 401, respectively. The elastic member 601 is provided at the end of the connector 306 so that when the connector 306 is connected to the first radiator 10 and the circuit board 40, the elastic member 601 at the end of the first portion 304 or the second portion 305 of the connector 306 is snapped onto the first signal feed point 101 or the second signal feed point 401. The first signal feed point 101 of the first radiator 10 and the second signal feed point 401 of the circuit board 40 may be provided with a snap-fit ​​buckle. When the elastic member 601 at the end of the first portion 304 or the second portion 305 is connected to the first signal feed point 101 and the second signal feed point 401, the elastic member 601 can be snapped onto the snap-fit ​​buckle of the first signal feed point 101 and the second signal feed point 401, facilitating subsequent replacement of the first filter assembly 30.

[0035] In this embodiment, when replacing the first filter component 30, the elastic member 601 provided at the end of the connector 306 can be pulled out from the first signal feeding point 101 and the second signal feeding point 401, thereby effectively avoiding damage to the circuit board 40 and the first radiator 10 when replacing the connector 306.

[0036] In an optional embodiment, the circuit board 40 includes a signal processing component 403, which is coupled to the connector 306. Specifically, when the circuit board 40 transmits a signal, the circuit board 40 transmits the signal to the signal processing component, which processes the signal to be transmitted and transmits the signal to the first filter component 30 via the second signal feed point 401. This filter component 30 filters the signal transmitted by the circuit board 40, preventing unwanted signals from passing through and suppressing other interfering signals. The first filter component 30 transmits the filtered signal to the first signal feed point 101, which transmits the signal to the first radiator 10. When the first radiator 10 receives a signal, the first radiator 10 transmits the signal to the first filter component 30 via the first signal feed point 101, thereby filtering the signal to prevent unwanted signals and suppress other signals. The first filter component 30 transmits the signal to the processing component via the second signal feed point 401. The processing component processes the signal and transmits it to the circuit board 40. The processing component may be integrated with a matching network to match the transmitted signal.

[0037] In an optional embodiment, a ground feed switch 404 is provided on the circuit board 40, and the ground feed switch 404 is connected to the second feeding point 402 of the circuit board 40, thereby connecting the first feeding point 102 of the first radiator 10 and the second feeding point 402 of the circuit board 40 on the first flat plate portion 501. The ground feed switch 404 can be used to control the connection and disconnection of the first radiator 10 and the circuit board 40 with the ground, so that when the first radiator 10 transmits or receives a signal, the ground feed switch 404 is turned on to control the grounding of the first radiator 10 and the circuit board 40, effectively avoiding damage to the circuit board 40 and the first radiator 10 during signal transmission.

[0038] In other embodiments, Figure 3 As shown, the filtering antenna further includes: a second radiator 20 and a second filter assembly 70. The second radiator 20 is provided with a third signal feed point 201 and a third feed point 202 spaced apart from each other, and the second filter assembly 70 is connected to the third signal feed point 201. The circuit board 40 has a fourth signal feed point 405, and the second filter assembly 70 is also coupled to the fourth signal feed point 405. The second flat plate portion 502 of the circuit board 40 has a fourth feed point 407, and the second flat plate portion 502 is detachably connected to the third signal feed point 201 and the fourth feed point 407. When the second radiator 20 transmits or receives signals, the second filter assembly 70 filters the signals, thereby blocking unwanted signals and suppressing interference signals. The second radiator 20 is connected to the circuit board 40 via the second filter assembly 70. The second filter component 70 is detachably connected to the third signal feed point 201 of the second radiator 20 and the fourth signal feed point 405 of the circuit board 40. The second filter component 70 is fixed to the third signal feed point 201 and the fourth signal feed point 405 by snapping or plugging, thereby facilitating the replacement of the second filter component 70.

[0039] In this embodiment, the second filter assembly 70 includes a plurality of fourth connectors 701 arranged side by side, including at least three fourth connectors 701 spaced apart and arranged side by side. Specifically, the second filter assembly 70 has the same structure as the first filter assembly 30 described above, and this application will not elaborate on this in detail. The first filter assembly and the second filter assembly 70 can be configured as needed. For example, the first filter assembly 30 can be configured as a zigzag structure, and the second filter assembly 70 can be configured as an arc-shaped structure. This can be configured based on the space within the product where the first and second filter assemblies 30 and 70 are installed, and this is not specifically limited in this application. A fourth feed point 407 is provided at the end of the fourth connector 701. The fourth feed point 407 can be detachably connected to the third signal feed point 201 and the fourth signal feed point 405, thereby facilitating replacement of the second filter assembly 70. The circuit board 40 also includes a second signal processing assembly 406, which is coupled to the second filter assembly 70. When the circuit board 40 transmits or receives signals, the circuit board 40 transmits signals to the second signal processing assembly 406.

[0040] In this embodiment, a third feeding point 202 is provided on the second radiator 20, and a fourth feeding point 407 is provided on the circuit board 40. The third feeding point 202 and the fourth feeding point 407 are connected via a second flat plate portion 502. When the second radiator 20 transmits or receives signals, it can be grounded via the second flat plate portion 502, thereby preventing damage to the second radiator 20 and the circuit board 40. A second ground feed switch 404 is provided on the circuit board 40, thereby connecting and disconnecting the second radiator 20 and the circuit board 40 from the ground via the feeding point switch.

[0041] In a specific application scenario, such as Figure 4As shown, a first radiator 10 and a second radiator 20 are disposed within a mobile device. When the first radiator 10 and the second radiator 20 transmit or receive signals, a first filter assembly 30 is disposed between the first radiator 10 and the circuit board 40, and a second filter assembly 70 is disposed between the second radiator 20 and the circuit board 40. The first filter assembly 30 can filter the signal transmitted by the first radiator 10, thereby preventing the signal transmitted by the first radiator 10 from affecting the signal transmitted by the second radiator 20. The second filter assembly 70 can filter the signal transmitted by the second radiator 20, thereby preventing the signal transmitted by the second radiator 20 from affecting the signal transmitted by the first radiator 10. That is, when the circuit board 40 transmits a signal through the first radiator 10 and the second radiator 20, the signal is transmitted to the first filter assembly 30 via the second signal feed point 401. The first filter assembly 30 filters the signal and transmits it to the first radiator 10 via the first signal feed point 101, thereby preventing the signal transmitted by the first radiator 10 from affecting the signal transmitted by the second radiator 20. The circuit board 40 transmits the signal to the second filter assembly 70 via the fourth signal feed point 405. The second filter assembly 70 filters the signal and transmits it to the second radiator 20 via the third signal feed point 201, thereby preventing the signal transmitted by the second radiator 20 from affecting the signal transmitted by the first radiator 10. When the first radiator 10 and the second radiator 20 receive the signal and transmit it to the circuit board 40, the received signal is filtered by the first filter assembly 30 and the second filter assembly 70, thereby preventing the signal from being transmitted to the circuit board 40 due to mutual interference between the signals transmitted by the first radiator 10 and the second radiator 20, which could cause deviations in the signal received by the circuit board 40.

[0042] In a specific application scenario, an LTE (Long Term Evolution, Universal Mobile Telecommunications System) antenna and a GPS (Global Positioning System, Global Positioning System) antenna may be included. The LTE antenna includes a first radiator 10 and a first filter component 30, and the GPS antenna includes a second radiator 20 and a second filter component 70. Generally, the LTE antenna includes the B13 frequency band, with a transmit signal frequency band of 777-797 MHz and a receive signal frequency band of 746-756 MHz. The GPS antenna has a frequency band of 1575.42 MHz. When the LTE antenna transmits a signal, it is easy to affect the GPS antenna's transmission signal, especially when the LTE antenna transmits a signal with twice the frequency band, which greatly affects the GPS antenna's signal transmission. By providing the first filter component 30 and the second filter component 70, the isolation between the LTE antenna and the GPS antenna can be effectively improved, thereby improving the performance of the LTE and GPS antennas when transmitting signals. That is, the first filter component 30 can suppress the signal transmitted by the GPS antenna, and the second filter component 70 suppresses the signal transmitted by the LTE antenna, thereby avoiding mutual interference between the LTE and GPS antennas when transmitting signals. Specifically, when the first radiator 10 transmits a signal, the first filter component 30 ensures that the LTE frequency band passes and suppresses the GPS or other frequency bands from passing. When the second radiator 20 transmits a signal, the second filter component 70 ensures that the GPS frequency band passes and suppresses the LTE or other frequency bands from passing.

[0043] In the above manner, the present application sets a first signal feed point 101 on the first radiator 10 and sets a second signal feed point 401 on the circuit board 40, and detachably connects the first filter component 30 to the first signal feed point 101 and the second signal feed point 401. In this way, the signal can be filtered by the first filter component 30, thereby preventing the first radiator 10 from being interfered with by other antennas and improving the performance of the filtering antenna. By setting the first filter component 30 with at least three connectors 306 arranged side by side, the filtering effect of the connector 306 can be changed by changing the length of the connector 306 or the spacing between the connectors 306. By setting the connector 306 to a bent structure and including a first part 304 and a second part 305, the connector 306 can form a flat capacitor, thereby completing the suppression of other signals. By providing an elastic member 601 at the end of the connector 306, the first filter assembly 30 can be detachably connected to the second signal feed point 401 of the circuit board 40 and the first signal feed point 101 of the re-consideration radiator, thereby facilitating replacement of the first filter assembly 30. By providing a ground feed switch 404 on the circuit board 40, the ground feed switch 404 can be used to control the grounding of the first radiator 10 and the circuit board 40 when the first radiator 10 transmits a signal, thereby preventing damage to the first radiator 10 and the circuit board 40 when the first radiator 10 transmits a signal. By providing a second radiator 20 and a second filter assembly 70, the signals can be filtered when multiple radiators transmit signals, thereby preventing mutual interference between multiple antennas.

[0044] The present application also provides a communication device, which includes: a filtering antenna, which is arranged in the communication device, and the filtering antenna is the filtering antenna of any of the above embodiments.

[0045] The above description is only an implementation method of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A filtering antenna, characterized in that: The filtering antenna comprises: A first radiator, wherein the first radiator has a first signal feeding point and a first feeding point spaced apart from each other; a first filtering component connected to the first signal feeding point; A circuit board, wherein the circuit board has a second signal feeding point, and the first filtering component is further coupled to the second signal feeding point; The first flat plate portion is provided with a second feeding point on the circuit board, and the first flat plate portion is detachably connected to the first feeding point and the second feeding point.

2. The filtering antenna according to claim 1, characterized in that The first filter assembly includes at least three connecting members spaced side by side, each of the connecting members is a bent structure and includes a metal sheet.

3. The filtering antenna according to claim 2, characterized in that The connecting member includes multiple first parts and second parts, the first parts are perpendicular to the second parts, the first parts are staggered with the second parts, and the first parts or the second parts located at the end are connected to the first signal feeding point or the second signal feeding point.

4. The filtering antenna according to claim 3, characterized in that An elastic member is provided at the end of the first part or the second part of the connecting member, and the elastic member is detachably connected to the first signal feeding point and the second signal feeding point respectively.

5. The filtering antenna according to claim 2, characterized in that The circuit board includes a signal processing component, and the signal processing component is coupled to the connecting member.

6. The filtering antenna according to claim 4, characterized in that A ground feed switch is provided on the circuit board, and the ground feed switch is coupled to the first flat plate portion.

7. The filtering antenna according to claim 3, characterized in that The distance between the connecting parts is 0.5mm to 1mm.

8. The filtering antenna according to claim 1, wherein: The filtering antenna further comprises: a second radiator, wherein a third signal feeding point and a third feeding point are provided at intervals between the second radiator; The second filtering component is connected to the third signal feeding point.

9. The filtering antenna according to claim 8, characterized in that The circuit board has a fourth signal feeding point, and the second filtering component is further coupled to the fourth signal feeding point; The second flat plate portion, the circuit board has a fourth feeding point, and the second flat plate portion is detachably connected to the third signal feeding point and the fourth feeding point.

10. A communication device, characterized in that: The communication device comprises: A filtering antenna, wherein the filtering antenna is arranged in the communication device, and the filtering antenna is the filtering antenna according to any one of claims 1 to 9.

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