Radiating arms, radiating elements and filtered antennas

Abstract

The present disclosure relates to the field of communication technology, and discloses a radiation arm, a radiation unit and a filtering antenna. The radiation arm comprises a first radiation body, a second radiation body and a first connector. At least one of the first radiation body and the second radiation body is a closed loop, and the first radiation body is distributed around the second radiation body. The first radiation body is electrically connected to the second radiation body through the first connector. The first radiation body, the second radiation body and the adjacent two first connectors form a closed loop structure. The radiation arm is applied to the radiation unit and the filtering antenna. The coupling high-frequency current directions on the opposite sides of the closed loop structure are opposite and offset each other, so that the coupling high-frequency current does not generate parasitic radiation, the influence on the antenna directional diagram of a specific frequency band is weakened, the directional diagram distortion problem caused by the high-low frequency mutual coupling is solved, and the miniaturization and integration of the multi-frequency multi-array antenna are facilitated.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to a radiating arm, a radiating element, and a filtering antenna. Background Technology

[0002] Miniaturization and integration of multi-band, multi-array antennas have become a development trend in the antenna industry. When multiple array antennas of different frequency bands are highly integrated, they face severe electromagnetic coupling effects, causing distortion of the antenna radiation pattern, or "pattern distortion." For example, in highly integrated multi-band, multi-array antennas, the low-frequency radiating elements, due to their larger apertures, will partially obstruct the high-frequency radiating elements located below them. This obstruction interferes with the high-frequency radiating elements, and the coupling high-frequency current generated at the obstruction points severely degrades the radiation characteristics of the high-frequency radiating elements, leading to pattern distortion. This results in significant deterioration of various antenna parameters such as gain, beamwidth, and cross-polarization. Therefore, solving the pattern distortion problem is crucial for the high miniaturization and integration of multi-band, multi-array antennas. Summary of the Invention

[0003] To solve the above-mentioned technical problems, or at least partially solve them, this disclosure provides a radiating arm, a radiating element, and a filtering antenna, which solves the radiation pattern distortion problem caused by high- and low-frequency mutual coupling, and is conducive to the miniaturization and integration of multi-band multi-array antennas.

[0004] This disclosure provides a radiating arm, including: a first radiator, a second radiator, and a first connector;

[0005] At least one of the first radiator and the second radiator is a closed loop, and the first radiator is distributed around the second radiator;

[0006] The first radiator is electrically connected to the second radiator through the first connector, and the first radiator and the second radiator located between two adjacent first connectors and the two adjacent first connectors form a closed loop structure.

[0007] Optionally, the perimeter of the closed ring structure is 0.15 to 0.85 times the wavelength corresponding to the center frequency of the filtered frequency band.

[0008] Optionally, the first angle between the first connector and the first radiator is equal to or less than 90°, and the second angle between the first connector and the second radiator is equal to or greater than 90°.

[0009] Optionally, the shape of the first connector includes at least one of straight strip, oblique strip, and curved strip.

[0010] Optionally, the overall shape of the first radiator is the same as the overall shape of the second radiator.

[0011] Optionally, the overall shape of the first radiator and the second radiator includes one of the following: circular, elliptical, and polygonal.

[0012] Optionally, the radiating arm further includes: a second connector in the form of a solid plate; the second connector is used to connect the first radiator and the second radiator;

[0013] The second connector is provided with a plug-in interface for connecting to the power supply unit.

[0014] Secondly, this disclosure also provides a radiating element, including any of the aforementioned radiating arms.

[0015] Optionally, the radiation unit includes a rotationally symmetrical first radiation arm, a second radiation arm, a third radiation arm, and a fourth radiation arm, wherein the first radiation arm is centrally symmetrical with the third radiation arm, and the second radiation arm is centrally symmetrical with the fourth radiation arm; the first radiation arm and the third radiation arm constitute a first polarization unit, and the second radiation arm and the fourth radiation arm constitute a second polarization unit, wherein the polarization direction of the first polarization unit is orthogonal to the polarization direction of the second polarization unit.

[0016] Thirdly, this disclosure also provides a filter antenna, including any of the above-mentioned radiating elements.

[0017] The technical solution provided in this disclosure has the following advantages compared with the prior art:

[0018] This disclosure provides a radiating arm, a radiating element, and a filtering antenna. The radiating arm includes a first radiator, a second radiator, and a first connector. At least one of the first and second radiators forms a closed loop, with the first radiator distributed around the second radiator. The first radiator is electrically connected to the second radiator via the first connector, and the first and second radiators located between two adjacent first connectors, along with the two adjacent first connectors, form a closed loop structure. Therefore, when the radiating arm is applied to a radiating element and a filtering antenna, the coupling high-frequency currents on opposite sides of the closed loop structure cancel each other out, preventing parasitic radiation from the coupling high-frequency currents. This reduces the impact on the antenna pattern of a specific frequency band, solves the pattern distortion problem caused by high- and low-frequency coupling, and facilitates the miniaturization and integration of multi-band multi-array antennas. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0020] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a radiating arm provided in an embodiment of the present disclosure;

[0022] Figure 2 This is a schematic diagram of the structure of a radiating arm provided in an embodiment of the present disclosure;

[0023] Figure 3 A schematic diagram of the structure of a radiating arm provided in an embodiment of this disclosure.

[0024] Figure 4 This is a schematic diagram of the structure of a radiating arm provided in an embodiment of the present disclosure;

[0025] Figure 5 This is a schematic diagram of the structure of a radiating unit provided in an embodiment of the present disclosure;

[0026] Figure 6 This is a schematic diagram of the structure of a filter antenna provided in an embodiment of this disclosure.

[0027] Among them, 1 is a filter antenna; 10 is a radiating element; 100 is a radiating arm; 110 is a first radiating arm; 120 is a second radiating arm; 130 is a third radiating arm; 140 is a fourth radiating arm; 101 is a first radiator; 102 is a second radiator; 103 is a first connector; 104 is a second connector; 105 is a plug-in interface; 106 is a closed loop structure; 20 is a feeding unit; and 201 is a plug-in component. Detailed Implementation

[0028] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the solutions disclosed herein will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0029] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some, and not all, of the embodiments of this disclosure.

[0030] In conjunction with the background technology section, when multiple array antennas of different frequency bands are highly integrated, the high-frequency radiating element and the low-frequency radiating element become mutually coupled, which will generate coupled high-frequency current on the low-frequency radiating element, causing the radiation pattern of the high-frequency radiating element to be distorted, that is, the radiation pattern is "distorted".

[0031] To address the aforementioned technical problems, this disclosure provides a radiating arm, a radiating element, and a filtering antenna. The radiating arm includes a first radiator, a second radiator, and a first connector. At least one of the first and second radiators forms a closed loop, and the first radiating arm is distributed around the second radiator. The first radiator is electrically connected to the second radiator via the first connector, and the first and second radiators located between two adjacent first connectors, along with the two adjacent first connectors, form a closed loop structure. Therefore, when this radiating arm is applied to a radiating element and a filtering antenna, the coupling high-frequency currents on opposite sides of the closed loop structure cancel each other out, preventing parasitic radiation from the coupling high-frequency currents. This reduces the impact on the antenna pattern of a specific frequency band, solves the pattern distortion problem caused by high- and low-frequency coupling, and facilitates the miniaturization and integration of multi-band multi-array antennas.

[0032] The radiating arm, radiating element, and filtering antenna provided in the embodiments of this disclosure will be described exemplarily below with reference to the accompanying drawings.

[0033] Figure 1-4 This is a schematic diagram of the structure of the radiating arm provided in an embodiment of this disclosure. (Refer to...) Figure 1-4 The radiating arm 100 includes: a first radiator 101, a second radiator 102, and a first connector 103; at least one of the first radiator 101 and the second radiator 102 is a closed loop, and the first radiator 101 is distributed around the second radiator 102; the first radiator 101 is electrically connected to the second radiator 102 through the first connector 103, and the first radiator 101 and the second radiator 102 located between two adjacent first connectors 103 and the two adjacent first connectors 103 form a closed loop structure 106.

[0034] The first radiator 101, the second radiator 102, and the first connector 103 can all be made of metals such as copper, aluminum, and silver, or any metal material known to those skilled in the art. They can also be mounted on a printed circuit board (PCB) using an electroplating process; this is not a limitation. The first radiator 101 and the second radiator 102 have wave-transmitting capabilities.

[0035] For example, such as Figure 1As shown, the first radiator 101 is a square closed loop, including four sides connected end to end; the second radiator 102 is also a square closed loop, including four sides connected end to end; the second radiator 102 is located inside the first radiator 101, that is, the second radiator 102 is located within the closed loop of the first radiator 101, and the first radiator 101 and the second radiator 102 are electrically connected through multiple first connectors 103, which can be a direct connection or an electrically coupled connection; the first radiator 101 and the second radiator 102 located between two adjacent first connectors 103 and the two first connectors 103 form a closed loop structure 106. Thus, by applying the radiating arm 100 to the radiating element and the filter antenna, the coupled high-frequency current flows in the closed loop structure 106. The coupled high-frequency currents on both sides of the closed loop structure 106 are opposite in direction and cancel each other out, thereby preventing the coupled high-frequency current from generating parasitic radiation, reducing the impact on the antenna pattern of a specific frequency band, solving the problem of pattern distortion caused by high and low frequency mutual coupling, and facilitating the miniaturization and integration of multi-band multi-array antennas.

[0036] For example, such as Figure 2 As shown, the first radiator 101 is a square closed loop, which includes four sides connected end to end; the second radiator 102 includes four sides connected in sequence, but the four sides do not form a closed loop, and the overall shape of the second radiator 102 is square; the second radiator 102 is located inside the closed loop of the first radiator 101, and the first radiator 101 and the second radiator 102 are electrically connected through multiple first connectors 103; the first radiator 101 and the second radiator 102 located between two adjacent first connectors 103 and the two first connectors 103 form a closed loop structure 106.

[0037] For example, such as Figure 3 As shown, the first radiator 101 includes four sides connected in sequence, but the four sides do not form a closed loop, and the overall shape of the first radiator 101 is square; the second radiator 102 includes four sides connected end to end, forming a square closed loop; the first radiator 101 is distributed around the second radiator 102, and the second radiator 102 is wrapped inside the first radiator 101. Each side of the first radiator 101 and the second radiator 102 are electrically connected through multiple first connectors 103; the first radiator 101 and the second radiator 102 located between two adjacent first connectors 103 and the two first connectors 103 form a closed loop structure 106.

[0038] For example, such as Figure 4As shown, the first radiator 101 includes four unconnected sides and has an overall square shape; the second radiator 102 includes four sides connected end-to-end, forming a square closed loop; the four sides of the first radiator 101 are distributed around the second radiator 102, enclosing the second radiator 102 inside the first radiator 101; each side of the first radiator 101 and the second radiator 102 are electrically connected through multiple first connectors 103; the first radiator 101 and the second radiator 102 located between two adjacent first connectors 103, along with the two first connectors 103, form a closed loop structure 106. It should be noted that... Figure 1 The first radiator 101 and the second radiator 102 are shown to be square only as an example, and do not constitute a limitation on the radiating arms provided in the embodiments of this disclosure. In other embodiments, the first radiator 101 and the second radiator 102 may be set to any shape known to those skilled in the art, such as a circle, an ellipse, a rectangle or other polygons. The polygons may be regular or irregular shapes, and are not limited herein.

[0039] This disclosure provides a radiating arm 100, comprising: a first radiator 101, a second radiator 102, and a first connector 103; at least one of the first radiator 101 and the second radiator 102 forms a closed loop, with the first radiator 101 distributed around the second radiator 102; the first radiator 101 is electrically connected to the second radiator 102 via the first connector 103, and the first radiator 101 and the second radiator 102 located between two adjacent first connectors 103, along with the two adjacent first connectors 103, form a closed loop structure 106. Thus, when this radiating arm 100 is applied to radiating elements and filter antennas, the coupling high-frequency currents on opposite sides of the loop structure 106 cancel each other out, thereby preventing parasitic radiation from the coupling high-frequency currents, reducing the impact on the antenna pattern of a specific frequency band, solving the pattern distortion problem caused by high- and low-frequency mutual coupling, and facilitating the miniaturization and integration of multi-band multi-array antennas.

[0040] In some embodiments, such as Figure 1 As shown, the perimeter of the closed ring structure 106 is 0.15 to 0.85 times the wavelength corresponding to the center frequency of the filtered frequency band.

[0041] The perimeter of the closed loop structure 106 is equal to the length of the first radiator 101 located between two connected first connectors 103, the length of the second radiator 102 located between two connected first connectors 103, and the sum of the lengths of the two adjacent first connectors 103. The perimeter of the closed loop structure 106 affects the filtering frequency band range. The perimeter of the closed loop structure 106 is set to be 0.15 to 0.85 times the wavelength corresponding to the center frequency of the filtering frequency band. For example, assuming the center frequency of the filtering frequency band is 2000MHz, the corresponding wavelength is approximately 15cm, and the perimeter of the closed loop structure 106 ranges from 2.25cm to 12.75cm.

[0042] In some embodiments, such as Figure 1-4 As shown, the first included angle α between the first connector 103 and the first radiator 101 is equal to or less than 90°, and the second included angle β between the first connector 103 and the second radiator 102 is equal to or greater than 90°.

[0043] For example, such as Figure 1-3 As shown, the first connecting body 103 is located in the middle area of ​​each side of the first radiator 101 and the second radiator 102. The first connecting body 103 is perpendicular to the first radiator 101 and the second radiator 102. The first connecting body 103 is perpendicular to the first radiator 101 and the second radiator 102 respectively, and the connection is at 90°, that is, the first included angle α and the second included angle β are both equal to 90°. The first connecting body 103 located at the edge position of each side of the first radiator 101 and the second radiator 102 (that is, the position corresponding to the four corners of the square) is inclined to the first radiator 101 and the second radiator 102. The first connecting body 103 is not equal to 90° with the first radiator 101 and the second radiator 102 respectively. The first included angle α is less than 90° and the second included angle β is greater than 90°.

[0044] For example, such as Figure 4 As shown, the four sides of the first radiator 101 are not connected to each other, so there is no need to set the first connecting body at the four corners of the second radiator 102. The first connecting body 103 is perpendicular to the first radiator 101 and the second radiator 102 respectively, and the connection is 90°, that is, the first included angle α and the second included angle β are both equal to 90°.

[0045] In other embodiments, all first connectors 103 may be vertically connected to the first radiator 101 and the second radiator 102, or all first connectors 103 may be obliquely connected to the first radiator 101 and the second radiator 102, which is not limited here.

[0046] It should be noted that this embodiment is based on Figure 1-4The first included angle α and the second included angle β shown are located on the same side of the first connector 103. The first included angle α is determined to be equal to or less than 90°, and the second included angle β is equal to or greater than 90°, but this does not constitute a limitation on the radiation arm provided in the embodiments of this disclosure. In other embodiments, the corresponding value range can be determined based on the selected positions of the first included angle α and the second included angle β, which is not limited here.

[0047] In some embodiments, the shape of the first connector includes at least one of straight strip, oblique strip, and curved strip.

[0048] Among them, the boundary of the first connecting body that is straight or oblique is a straight line segment; the boundary of the first connecting body that is curved is a curved line segment.

[0049] For example, such as Figure 1 As shown, the first connecting body 103 located in the middle region of each side length of the first radiator 101 and the second radiator 102 is set as a straight strip, and the first connecting body 103 located at each corner of the first radiator 101 and the second radiator 102 is set as an oblique strip.

[0050] It should be noted that, Figure 1 The first connector 101 is shown to have both straight and oblique shapes, but this does not constitute a limitation on the radiating arm provided in this embodiment. In other embodiments, all first connectors 103 may be configured to have the same shape, for example, all first connectors 103 may be configured to have one of the following shapes: straight, oblique, or curved; or the first connectors 103 in the radiating arm 100 may have three shapes: straight, oblique, and curved, which is not limited here.

[0051] In some embodiments, such as Figure 1 As shown, the overall shape of the first radiator 101 is the same as that of the second radiator 102.

[0052] The shape of the first radiator 101 refers to the shape presented by the overall outline of the first radiator 101, and the shape of the second radiator 102 refers to the shape presented by the overall outline of the second radiator 102.

[0053] For example, such as Figure 1 As shown, both the first radiator 101 and the second radiator 102 are closed loops with the same shape, both being square. The overall shape of the first radiator 101 and the second radiator 102 are the same, with the only difference being their size. The side length (or perimeter) of the first radiator 101 is greater than the side length (or perimeter) of the second radiator 102, and the second radiator 102 is located inside the first radiator 101.

[0054] For example, such as Figure 2 As shown, the first radiator 101 is a closed loop with a square shape, while the second radiator 102 is a non-closed square with the same overall shape.

[0055] For example, such as Figure 3-4 As shown, the overall shape of the first radiator 101 is a non-closed square, and the first radiator 101 is a closed loop with a square shape. The overall shapes of the two are the same.

[0056] In other embodiments, the first radiator 101 and the second radiator 102 have similar shapes, but their shapes are not exactly the same. For example, the first radiator 101 is shaped like a raindrop, and the second radiator is elliptical; or, the first radiator 101 is shaped like a rectangle, and the second radiator is shaped like a square; or, the first radiator 101 is shaped like an ellipse, and the second radiator is shaped like a circle.

[0057] In some embodiments, the overall shape of the first radiator and the second radiator includes one of a circle, an ellipse, and a polygon.

[0058] Polygons refer to closed figures composed of three or more line segments connected end to end in sequence, including but not limited to regular figures such as equilateral triangles, squares, rectangles, rhombuses, parallelograms, and regular pentagons, as well as irregular figures with a corresponding number of sides. The overall shape of the first and second radiators also includes shapes that are similar to circles and ellipses, such as raindrop shapes, which are not limited here.

[0059] In this embodiment, at least one of the first radiator and the second radiator is a closed loop, meaning that at least one of the first radiator and the second radiator has a closed shape. When both the first radiator and the second radiator have closed shapes, their shapes are the same or similar; when one of the first radiator and the second radiator has a closed shape and the other has a non-closed shape, the overall shape of the non-closed shape is the same as or similar to the shape of the closed shape.

[0060] In some embodiments, such as Figure 1 As shown, the radiating arm 100 also includes a second connector 104 with a solid plate structure; the second connector 104 is used to connect the first radiator 101 and the second radiator 102; the second connector 104 is provided with a plug-in interface 105, which is used to connect to the power supply unit.

[0061] The second connector 104 is located in the space between the first radiator 101 and the second radiator 102, and is connected to both. The second connector 104 is a solid plate structure, which enhances the strength of the connection. A plug-in interface 105 extending through the thickness of the second connector 104 is provided. The power supply unit includes a connector corresponding to the plug-in interface 105. Connecting the connector to the plug-in interface 105 enables the connection between the radiating arm 100 and the power supply unit.

[0062] For example, such as Figure 1-4 As shown, in the radiating arm 100, the overall shape of the first radiator 101 and the second radiator 102 is square, and the shape of the second connecting body 104 is also square. It is located at the lower right corner of the first radiator 101 and the second radiator 102, and covers the space between the first radiator 101, the second radiator 102 and the first radiator 101 and the second radiator 102 at the corresponding position at the lower right corner, thus realizing a firm connection between the first radiator 101 and the second radiator 102.

[0063] In this embodiment, the first radiator 101, the second radiator 102, the first connector 103, and the second connector 104 can be formed separately first, and then the above structures can be assembled to form the structure shown above. Figure 1-4 The radiating arm shown can also be formed by integrally molding the first radiator 101, the second radiator 102, the first connector 103, and the second connector 104, as shown. Figure 1-4 The radiating arm shown omits the assembly process, which helps reduce costs.

[0064] It should be noted that, Figure 1-4 The second connector 104 is shown as a square shape, located at the lower right corner of the first radiator 101 and the second radiator 102, but this does not constitute a limitation on the radiating arm provided in the embodiments of this disclosure. In other embodiments, the shape and position of the second connector 104 can be flexibly set according to requirements, and are not limited here.

[0065] Based on the above embodiments, this disclosure also provides a radiating unit. For example... Figure 5 As shown, the radiation unit 10 includes any of the above-mentioned radiation arms 100, which have corresponding beneficial effects. To avoid repetition, they will not be described again here.

[0066] In some embodiments, such as Figure 5As shown, the radiating element 10 includes a rotationally symmetric first radiating arm 110, a second radiating arm 120, a third radiating arm 130, and a fourth radiating arm 140. The first radiating arm 110 is centrally symmetric with the third radiating arm 130, and the second radiating arm 120 is centrally symmetric with the fourth radiating arm 140; the first radiating arm 110 and the third radiating arm 130 form a first polarization unit, the second radiating arm 120 and the fourth radiating arm 140 form a second polarization unit, and the polarization direction of the first polarization unit is orthogonal to the polarization direction of the second polarization unit.

[0067] Wherein, the first radiating arm 110, the second radiating arm 120, the third radiating arm 130, and the fourth radiating arm 140 are rotationally symmetric, and their structures are substantially the same.

[0068] By way of example, as Figure 5 shown, in the clockwise direction, the radiating element 10 includes a rotationally symmetric first radiating arm 110, a second radiating arm 120, a third radiating arm 130, and a fourth radiating arm 140. The first radiating arm 110, the second radiating arm 120, the third radiating arm 130, and the fourth radiating arm 140 are arranged in a "field" shape. The first radiating arm 110 located at the upper left corner is centrally symmetric with the third radiating arm 130 located at the lower right corner, and the second radiating arm 120 located at the upper right corner is centrally symmetric with the fourth radiating arm 140 located at the lower left corner; wherein the first radiating arm 110 and the third radiating arm 130 are arranged diagonally to form the first polarization unit; the second radiating arm 120 and the fourth radiating arm 140 are arranged diagonally to form the second polarization unit; the polarization directions of the two polarization units are perpendicular to each other. For example, if the polarization direction of the first polarization unit is defined as +45°, then the polarization direction of the second polarization unit is -45°.

[0069] Based on the above implementation, embodiments of the present disclosure further provide a filtered antenna. As Figure 6 shown, the filtered antenna 1 includes any one of the above radiating elements 10, which has corresponding beneficial effects. To avoid repeated description, details are not repeated herein.

[0070] Wherein, the filtered antenna 1 further comprises a feeding unit 20, the feeding unit 20 includes a plug connector 201, the plug connector 201 is arranged corresponding to a plug interface 105, the plug connector 201 is inserted into the plug interface 105 and protrudes from the plane where the second connecting body 104 is located, thereby realizing the connection between the radiating element 10 and the feeding unit 20. The feeding unit 20 comprises a balun feeding unit, and the balun feeding structure is used for feeding the radiating element and plays a certain supporting role.

[0071] In this embodiment, the filtered antenna 1 has a transmission effect on antenna radiation in a specific frequency band, can reduce the influence on the radiation performance of the antenna in the specific frequency band, and achieves better radiation indicators and circuit indicators.

[0072] In other embodiments, the filter antenna 1 may also include all components known to those skilled in the art, such as a support and a base, which are not limited herein.

[0073] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0074] The above description is merely a specific embodiment of this disclosure, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A radiating arm, characterized in that, include: A first radiator, a second radiator, and a first connector; At least one of the first radiator and the second radiator is a closed loop, and the first radiator is distributed around the second radiator; The first radiator is electrically connected to the second radiator through the first connector, and the first radiator and the second radiator located between two adjacent first connectors and the two adjacent first connectors form a closed loop structure. The perimeter of the closed ring structure is 0.15 to 0.85 times the wavelength corresponding to the center frequency of the filtered frequency band.

2. The radiating arm according to claim 1, characterized in that, The first angle between the first connector and the first radiator is equal to or less than 90°, and the second angle between the first connector and the second radiator is equal to or greater than 90°.

3. The radiating arm according to claim 1, characterized in that, The shape of the first connector includes at least one of straight strip, oblique strip, and curved strip.

4. The radiating arm according to any one of claims 1-3, characterized in that, The overall shape of the first radiator is the same as that of the second radiator.

5. The radiating arm according to claim 4, characterized in that, The overall shape of the first radiator and the second radiator includes one of the following: circular, elliptical, and polygonal.

6. The radiating arm according to claim 1, characterized in that, Also includes: A second connector having a solid plate-like structure; the second connector is used to connect the first radiator and the second radiator; The second connector is provided with a plug-in interface for connecting to the power supply unit.

7. A radiating unit, characterized in that, include: The radiating arm as described in any one of claims 1-6.

8. The radiating element according to claim 7, characterized in that, The radiation unit includes a rotationally symmetrical first radiation arm, a second radiation arm, a third radiation arm, and a fourth radiation arm. The first radiation arm is centrally symmetrical with the third radiation arm, and the second radiation arm is centrally symmetrical with the fourth radiation arm. The first radiation arm and the third radiation arm constitute a first polarization unit, and the second radiation arm and the fourth radiation arm constitute a second polarization unit. The polarization direction of the first polarization unit is orthogonal to the polarization direction of the second polarization unit.

9. A filter antenna, characterized in that, include: The radiation unit as described in claim 7 or 8.

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