Circularly polarized antenna and electronic device

Abstract

The present disclosure relates to the technical field of communications, and provides a circularly polarized antenna and an electronic device. The circularly polarized antenna of the present disclosure comprises a first dielectric layer and a second dielectric layer which are oppositely arranged, and four antenna elements which are arranged in an array; each antenna element comprises a first radiation electrode, a reference electrode layer, a first isolation assembly, and a second isolation assembly; the first radiation electrode is arranged on the side of the first dielectric layer away from the second dielectric layer, the reference electrode layer is arranged on the side of the second dielectric layer away from the first dielectric layer, the first isolation assembly is integrated on the first dielectric layer, and the orthographic projection of the first isolation assembly and the orthographic projection of the second isolation assembly on a plane where the first dielectric layer is located both confine the orthographic projection of the first radiation electrode on the plane where the first dielectric layer is located within respective interiors; each first radiation electrode is provided with a U-shaped first through slot, the first through slot has a first side wall and a second side wall which are oppositely arranged, and the length of the first side wall is greater than that of the second side wall.

Description

Circularly polarized antennas and electronic equipment Technical Field

[0001] The present disclosure belongs to the field of communication technology, and particularly relates to a circularly polarized antenna and electronic equipment. Background Art

[0002] Satellite internet, a key area of ​​support within China's new infrastructure policy, has experienced rapid growth in recent years. Circularly polarized antenna arrays are crucial for receiving and transmitting signals in satellite communication systems, and their performance directly impacts the overall communication quality of the system.

[0003] Axial bandwidth is a key performance metric for circularly polarized antennas and arrays. However, conventional circularly polarized antennas have a narrow axial bandwidth, which prevents them from achieving this axial ratio when performing wide-angle beam scanning, significantly impacting the overall performance of the communication system. Therefore, a circularly polarized antenna array with a low axial ratio and wide axial bandwidth is proposed, enabling wide-angle beam scanning across a wide operating frequency band. This is of great significance to the development of satellite communications.

[0004] Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art and provide a circularly polarized antenna and an electronic device.

[0006] In a first aspect, an embodiment of the present disclosure provides a circularly polarized antenna, comprising a first dielectric layer and a second dielectric layer disposed opposite to each other, and four antenna units arranged in an array;

[0007] The antenna unit includes a first radiation electrode, a reference electrode layer, a first isolation component, and a second isolation component; the first radiation electrode is arranged on a side of the first dielectric layer facing away from the second dielectric layer, the reference electrode layer is arranged on a side of the second dielectric layer facing away from the first dielectric layer, the first isolation component is integrated on the first dielectric layer, and the orthographic projections of the first isolation component and the second isolation component on the plane where the first dielectric layer is located both confine the orthographic projections of the first radiation electrode on the plane where the first dielectric layer is located within their respective interiors; the orthographic projections of the first radiation electrode and the reference electrode layer on the plane where the first dielectric layer is located at least partially overlap; wherein,

[0008] The first radiation electrode has a U-shaped first through-slot, the first through-slot has a first side wall and a second side wall opposite to each other, and the length of the first side wall is greater than the length of the second side wall.

[0009] The first through slots arranged adjacent to each other in a clockwise direction are obtained by rotating the former by 90° on the plane where the first dielectric layer is located, and the orthographic projections of the first through slots on the plane where the first dielectric layer is located have different opening directions.

[0010] The first radiation electrode includes a plurality of first side edges connected in sequence, and at least one of the first side edges is a first chamfered edge. The angle formed by the first chamfered edge and the two first side edges connected thereto is an obtuse angle.

[0011] The first radiation electrode has two first cut-angle edges, and the two first cut-angle edges are arranged opposite to each other;

[0012] The first through groove further includes a first connecting portion, a first end of the first side wall is connected to the first connecting portion, and a second end of the first side wall points to one of the first chamfered edges.

[0013] The circularly polarized antenna further includes a third dielectric layer disposed on a side of the layer where the first radiation electrode is located away from the first dielectric layer; the antenna unit includes a second radiation electrode and a third isolation component; the third isolation component is integrated on the third dielectric layer, and the second radiation electrode is disposed on a side of the third dielectric layer away from the first radiation electrode, and at least partially overlaps with an orthographic projection of the first radiation electrode on the plane where the first dielectric layer is located.

[0014] The second radiation patch has a U-shaped second through-slot, and the openings of the orthographic projections of the second through-slot and the first through-slot in the antenna unit on the plane where the first dielectric layer is located are directed in the same direction.

[0015] The second through groove has a third side wall and a fourth side wall that are opposite to each other, and the third side wall and the fourth side wall are of equal length.

[0016] The first radiation electrode and the second radiation electrode have the same outer contour shape.

[0017] In which, the circularly polarized antenna also includes a first electrode layer, which is located on the side of the first dielectric layer away from the second dielectric layer. The first electrode layer has a first opening that penetrates along its thickness direction. A first radiation electrode is arranged in one of the first openings, and an orthographic projection of the first isolation component on the plane where the first dielectric layer is located surrounds an orthographic projection of the first opening on the plane where the first dielectric layer is located; the third isolation component is electrically connected to the first isolation component through the first electrode layer.

[0018] Among them, for the first opening and the first radiation electrode whose orthographic projection on the plane where the first dielectric layer is located is located at the orthographic projection of the first opening on the plane where the first dielectric layer is located, the outline of the first radiation electrode is the same as the outline of the first opening.

[0019] Among them, the second isolation component and the third isolation component are electrically connected; the second isolation component is connected to the reference electrode layer; a second electrode layer is arranged on the side of the first dielectric layer close to the second dielectric layer, and the second electrode layer is electrically connected to the first isolation component and the second isolation component.

[0020] The orthographic projections of the second isolation component and the third isolation component in the antenna unit on the plane where the first dielectric layer is located overlap.

[0021] Wherein, the side portions of the adjacent second isolation components are shared; the side portions of the adjacent third isolation components are shared.

[0022] The first isolation component includes a plurality of first isolation columns arranged at intervals; the first dielectric layer has a plurality of first connection holes penetrating along the thickness direction thereof, and one first isolation column is arranged in each first connection hole;

[0023] The second isolation component includes a plurality of second isolation columns arranged at intervals; the second dielectric layer has a plurality of second connection holes penetrating along the thickness direction thereof, and one second isolation column is arranged in each second connection hole;

[0024] The third isolation component includes a plurality of third isolation columns arranged at intervals; the third dielectric layer has a plurality of third connection holes penetrating along the thickness direction thereof, and one third isolation column is arranged in each third connection hole.

[0025] In which, the circularly polarized antenna also includes a third electrode layer, which is located on the side of the third dielectric layer away from the first dielectric layer. The third electrode layer has a second opening extending through its thickness direction. A second radiation electrode is arranged in one of the second openings, and an orthographic projection of the third isolation component on the plane where the first dielectric layer is located surrounds an orthographic projection of the second opening on the plane where the first dielectric layer is located, and the third isolation component is electrically connected to the third electrode layer.

[0026] The antenna unit further includes a feeding structure, and the feeding structure is electrically connected to the first radiation electrode.

[0027] The feeding structure is a probe, and the probe is electrically connected to the first radiation electrode through a first through hole penetrating the reference electrode layer and the second dielectric layer.

[0028] The center of the first through hole coincides with the orthographic projection of the center of the first radiation electrode on the plane where the first dielectric layer is located.

[0029] Wherein, the material of the second dielectric layer is glue.

[0030] An embodiment of the present disclosure further provides an electronic device, which includes any of the circularly polarized antennas described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] FIG1 is an exploded view of a circularly polarized antenna according to an embodiment of the present disclosure.

[0032] FIG2 is a cross-sectional view of the circularly polarized antenna shown in FIG1 .

[0033] FIG3 is a schematic diagram of the first dielectric layer and the integrated structure thereof of the circularly polarized antenna according to an embodiment of the present disclosure.

[0034] FIG4 is a schematic diagram of the second dielectric layer and the integrated structure thereof of the circularly polarized antenna according to an embodiment of the present disclosure.

[0035] FIG5 is a schematic diagram of a first radiation electrode according to an embodiment of the present disclosure.

[0036] FIG6 is an exploded view of another circularly polarized antenna according to an embodiment of the present disclosure.

[0037] FIG7 is a cross-sectional view of the circularly polarized antenna shown in FIG6 .

[0038] FIG8 is a schematic diagram of the third dielectric layer and the integrated structure thereof of the circularly polarized antenna according to an embodiment of the present disclosure.

[0039] FIG9 is a schematic diagram of another third dielectric layer and the integrated structure thereof of the circularly polarized antenna according to an embodiment of the present disclosure.

[0040] FIG10 is a schematic diagram of another first dielectric layer and the integrated structure thereof of the circularly polarized antenna according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0042] Unless otherwise defined, the technical or scientific terms used in this disclosure should have the usual meanings understood by people with ordinary skills in the field to which this disclosure belongs. The words "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one", "an" or "the" do not indicate a quantity limitation, but rather indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0043] In the first aspect, Figure 1 is an exploded view of a circularly polarized antenna according to an embodiment of the present disclosure; Figure 2 is a cross-sectional view of the circularly polarized antenna shown in Figure 1; Figure 3 is a schematic diagram of the first dielectric layer 10 of the circularly polarized antenna according to an embodiment of the present disclosure and the structure integrated thereon; Figure 4 is a schematic diagram of the second dielectric layer 20 of the circularly polarized antenna according to an embodiment of the present disclosure and the structure integrated thereon; Figure 5 is a schematic diagram of the first radiating electrode 11 according to an embodiment of the present disclosure; as shown in Figures 1-5, an embodiment of the present disclosure provides a circularly polarized antenna, which includes a first dielectric layer 10 and a second dielectric layer 20, and four antenna units arranged in an array. Each antenna unit includes a first radiating electrode 11, a reference electrode layer 21, a first isolation component 12, and a second isolation component 22. The first radiating electrode 11 is disposed on the side of the first dielectric layer 10 facing away from the second dielectric layer 20, and the reference electrode layer 21 is disposed on the side of the second dielectric layer 20 facing away from the first dielectric layer 10. The first isolation component 12 is integrated with the first dielectric layer 10, and the orthographic projections of the first isolation component 12 and the second isolation component 22 on the plane of the first dielectric layer 10 confine the orthographic projections of the first radiating electrode 11 on the plane of the first dielectric layer 10 to their respective interiors. The orthographic projections of the first radiating electrode 11 and the reference electrode layer 21 on the plane of the first dielectric layer 10 at least partially overlap. The first radiating electrode 11 is configured to radiate radio frequency signals, and the first isolation component 12 and the second isolation component 22 are provided to prevent radio frequency signal crosstalk between antenna units.

[0044] In particular, in the disclosed embodiment, the U-shaped first through-slot 111 of the first radiating electrode 11 in each antenna unit has a first sidewall 1111 and a second sidewall 1112 disposed opposite each other, with the first sidewall 1111 being longer than the second sidewall 1112. The unequal lengths of the first and second sidewalls 1111, 1112 on the first radiating electrode 11 not only achieve circular polarization of the antenna, but also reduce the antenna's axial ratio, thereby expanding the antenna's axial ratio bandwidth.

[0045] In some examples, the first through slots 111 arranged adjacent to each other in a clockwise direction are obtained by rotating the first through slots 111 by 90° on the plane of the first dielectric layer 10, and the orthographic projections of the first through slots on the plane of the first dielectric layer 10 have different opening orientations. Specifically, for ease of understanding, the four antenna units are named in a clockwise order, namely the first antenna unit, the second antenna unit, the third antenna unit, and the fourth antenna unit. The first antenna unit is the antenna unit in the lower right corner of Figure 3 , the first sidewall 1111 of the first antenna unit is the upper sidewall, and the second sidewall 1112 is the lower sidewall. According to the right-hand spiral rule, the first radiating electrode 11 radiates right-handed polarized waves. Taking the first through slot 111 in the first antenna unit as a reference, the first through slot 111 on the second antenna unit is rotated 90° clockwise compared to the first through slot 111 in the first antenna unit, the first through slot 111 on the third antenna unit is rotated 180° clockwise compared to the first through slot 111 in the first antenna unit, and the first through slot 111 on the fourth antenna unit is rotated 270° clockwise compared to the first through slot 111 in the first antenna unit.

[0046] In some examples, the first radiating electrode 11 in the disclosed embodiments includes multiple sequentially connected first sides S1, where at least one first side S1 forms an obtuse angle with two connected first sides S1. For ease of description, this first side S1 is referred to as a first chamfered side S1'. For example, if the first radiating electrode 11 is a pentagon, one of the first sides S1 is a first chamfered side S1', and the angles formed by the remaining first sides S1 are all 90°, then the first radiating patch is equivalent to chamfering one angle of a rectangular first radiating patch. For another example, if the first radiating electrode 11 is a hexagon, two of the first sides S1 are first chamfered sides S1', and the angles formed by the remaining first sides S1 are all 90°, then the first radiating patch is equivalent to chamfering two angles of a rectangular first radiating patch. By chamfering the rectangular first radiating patch to form the first radiating patch in the disclosed embodiments, the axial ratio bandwidth of the antenna can be further broadened.

[0047] Furthermore, referring to Figure 5 , the first through-slot 111 on the first radiating electrode 11 includes not only a first sidewall 1111 and a second sidewall 1112, but also a first connecting portion. The first and second sidewalls 1111 and 1112 each have a first end and a second end, with the first end of the first sidewall 1111 and the first end of the second sidewall 1112 respectively connected to the ends of the first connecting portion. The second end of the first sidewall 1111 points toward one of the first chamfered edges S1'. The second end of the second side edge points toward a first side edge S1 connected to the first chamfered edge S1'. This arrangement not only achieves circular polarization but also broadens the antenna's axial ratio bandwidth.

[0048] Furthermore, the first sidewall 1111 and the second sidewall 1112 of the first through-slot 111 are symmetrically arranged about a straight line passing through the center of the first radiating patch as an axis of symmetry. For example, in the case where the first radiating patch comprises a hexagon, two of the six first sides S1 are first chamfered sides S1', and the angle formed by the remaining connected first sides S1 is 90°, the center of the first radiating electrode 11 is the center of a virtual quadrilateral formed by extending the remaining first sides S1 except the first chamfered sides S1'.

[0049] In some examples, Figure 6 is an explosion of another circularly polarized antenna according to an embodiment of the present disclosure; Figure 7 is a cross-sectional view of the circularly polarized antenna shown in Figure 6; Figure 8 is a schematic diagram of the third dielectric layer 30 of the circularly polarized antenna according to an embodiment of the present disclosure and the structure integrated thereon; as shown in Figures 6-8, the circularly polarized antenna according to an embodiment of the present disclosure not only includes the above structure, but also includes a third dielectric layer 30 arranged on the side of the first dielectric layer 10 away from the second dielectric layer 20, each antenna unit also includes a second radiation electrode 31 arranged on the side of the third dielectric layer 30 away from the first dielectric layer 10, and a third isolation component 32 integrated on the third dielectric layer 30, and the second radiation electrode 31 at least partially overlaps with the orthographic projection of the first radiation electrode 11 on the plane where the first dielectric layer 10 is located, and the orthographic projection of the third isolation component 32 on the plane where the first dielectric layer 10 is located confines the orthographic projection of the second radiation electrode 31 on the plane where the first dielectric layer 10 is located within it. In this case, adding a second radiation electrode 31 in each antenna unit can improve the matching characteristics between the antenna and the free space and expand the antenna impedance bandwidth. Moreover, adding a third isolation component 32 surrounding the second radiation electrode 31 in each antenna unit can further prevent crosstalk between the antenna units.

[0050] In some examples, the orthographic projections of the center of the second radiation electrode 31 and the center of the first radiation electrode 11 in each antenna element on the plane of the first dielectric layer 10 coincide with each other. This can improve the radiation efficiency of the RF signal. For example, in the embodiment of the present disclosure, the outline of the second radiation electrode 31 is the same as the outline of the first radiation electrode 11.

[0051] In some examples, the second radiation electrode 31 has a U-shaped second through-slot, and the openings of the second through-slot and the first through-slot 111 in the antenna unit on the plane where the first dielectric layer 10 is located are oriented in the same direction. Furthermore, the second through-slot has a third side wall and a fourth side wall that are arranged opposite to each other, and the lengths of the third side wall and the fourth side wall are equal. The U-shaped second through-slot on each second radiation electrode 31 is arranged in this way to better achieve the circular polarization of the antenna. Figure 9 is a schematic diagram of another third dielectric layer 30 and the integrated structure thereof of the circularly polarized antenna in an embodiment of the present disclosure; as shown in Figure 9, of course, in the embodiment of the present disclosure, the through-slot structure may also be omitted, and the second radiation electrode 31 may be selected to include but not limited to a rectangular patch, which can also achieve improved matching characteristics between the antenna and free space.

[0052] In some examples, a first electrode layer 1 is provided on the side of the first dielectric layer 10 facing away from the second dielectric layer 20, and a second electrode layer 2 is provided on the side of the first dielectric layer 10 facing away from the first radiating electrode 11. The third isolation component 32 is electrically connected to the first isolation component 12 via the first electrode layer 1, the first isolation component 12 is electrically connected to the second isolation component 22 via the second electrode layer 2, and the second isolation component 22 is electrically connected to the reference electrode layer 21. This ensures that the first isolation component 12, the second isolation component 22, and the third isolation component 32 in each antenna unit are all electrically connected to the reference electrode layer 21. The reference electrode layer 21 includes, but is not limited to, a ground electrode layer. In the present embodiment, for ease of control, the reference electrode layer 21 is assumed to be the ground electrode layer.

[0053] Continuing with Figure 3, the first electrode layer 1 of the present embodiment includes four first openings 13 arranged in an array. A first radiating electrode 11 is disposed within each first opening 13, and the orthographic projection of the first isolation component 12 on the plane of the first dielectric layer 10 surrounds the orthographic projection of one of the first openings 13 on the plane of the first dielectric layer 10. The contours of the first opening 13 and the first radiating electrode 11 whose orthographic projection on the plane of the first dielectric layer 10 is located within the orthographic projection of the first opening 13 on the plane of the first dielectric layer 10 are identical. This pattern of first openings 13 helps enhance circular polarization of the antenna and expands the axial ratio bandwidth. Figure 10 illustrates another schematic diagram of the first dielectric layer 10 and its integrated structure for a circularly polarized antenna according to the present embodiment. As shown in Figure 10, a square shape is also feasible for the first opening 13, and the contour of the first opening 13 is not specifically limited in the present embodiment.

[0054] In some examples, referring to FIG. 8, in the embodiment of the present disclosure, a third electrode layer 3 is provided on a side of the third dielectric layer 30 facing away from the first dielectric layer 10. The third electrode layer 3 has a second opening 32 penetrating along its thickness direction. One of the second radiation electrodes 31 is provided in one second opening 32. And a positive projection of one third isolation component 32 on the plane where the first dielectric layer 10 is located surrounds a positive projection of one second opening 32 on the plane where the first dielectric layer 10 is located, and the third isolation component 32 is electrically connected to the third electrode layer 3.

[0055] Further, the contour of the second opening 32 and the contour of the second radiation electrode 31 surrounded thereby may be the same. Of course, the second opening 32 may also be a rectangular opening. In the embodiment of the present disclosure, the contour shape of the second opening 32 is not limited.

[0056] In some examples, positive projections of the second isolation components 22 and the third isolation components 32 of each antenna unit in the embodiment of the present disclosure on the plane where the first dielectric layer 10 is located coincide, which helps to achieve miniaturization of the antenna. Further, sides of adjacent second isolation components 22 are shared; sides of adjacent third isolation components 32 are shared. That is, four second isolation components 22 form a cross-shaped structure, and four third isolation components 32 form a cross-shaped structure.

[0057] It should be noted here that the positive projection of each first isolation component 12 on the plane where the first dielectric layer 10 is located has no overlap with the positive projection of the second isolation component 22 / third isolation component 32 on the plane where the first dielectric layer 10 is located, which is mainly due to process reasons. This will be described in combination with the specific structures of the first isolation component 12, the second isolation component 22, and the third isolation component 32.

[0058] In some examples, the first isolation component 12 includes a plurality of first isolation posts arranged at intervals; the first dielectric layer 10 has a plurality of first connection holes penetrating along its thickness direction, and one first isolation post is provided in one first connection hole; the second isolation component 22 includes a plurality of second isolation posts arranged at intervals; the second dielectric layer 20 has a plurality of second connection holes penetrating along its thickness direction, and one second isolation post is provided in one second connection hole; the third isolation component 32 includes a plurality of third isolation posts arranged at intervals; the third dielectric layer 30 has a plurality of third connection holes penetrating along its thickness direction, and one third isolation post is provided in one third connection hole.

[0059] When manufacturing this antenna, the third dielectric layer 30 and the first spacer are first formed, followed by the second dielectric layer and the third spacer, and finally the second dielectric layer 20 and the second spacer. The formation of the remaining structures is not described in detail. A third dielectric layer 30 is provided, and then a third connection hole is punched into the third dielectric layer 30. Then, a third spacer is formed on the inner wall of the third connection hole through electroplating. Next, a first dielectric layer 10 is formed, which can be an adhesive layer. A first connection hole is punched into the first connection hole, and then the first spacer is formed on the inner wall of the first connection hole through electroplating. Finally, a second dielectric layer 20 is provided, and then a second connection hole is punched into the second dielectric layer 20. Finally, a second spacer is formed on the inner wall of the second connection hole through electroplating. It is understood that if the first and third spacers are positioned in a corresponding manner, the third spacer may be damaged when drilling the first connection hole. Therefore, the positions of the first and second / third spacers are staggered. Of course, if the structures on the three dielectric layers are formed and then the three layers are pasted together, the positions of the first isolation pillars and the second isolation pillars / third isolation pillars can also be arranged in a one-to-one correspondence.

[0060] Furthermore, in the embodiment of the present disclosure, the first isolation column can fill the first connection hole or only cover the inner wall of the first connection hole. Similarly, the second isolation column can fill the second connection hole or only cover the inner wall of the second connection hole. The third isolation column can fill the third connection hole or only cover the inner wall of the third connection hole.

[0061] In some examples, the antenna unit of the embodiments of the present disclosure includes not only the above-mentioned structure, but also includes a feeding structure, which is electrically connected to the first radiation electrode 11 and configured to provide a radio frequency signal to the first radiation electrode 11. Furthermore, the feeding structure of the embodiments of the present disclosure can adopt a probe 40, the core of the probe 40 is connected to the first radiation electrode 11, and the ground layer of the probe 40 is electrically connected to the reference electrode layer 21. The core of the probe 40 needs to be electrically connected to the first radiation electrode 11 through a first through hole 201 that penetrates the reference electrode layer 21, the second dielectric layer 20, the second electrode layer 2, and the first dielectric layer 10. In the embodiment of the present disclosure, the center of the first through hole 201 coincides with the orthographic projection of the center of the first radiation electrode 11 on the plane of the first dielectric layer 10, that is, each antenna unit is centrally fed.

[0062] In some examples, the circularly polarized antenna also includes a transceiver unit, a radio frequency transceiver, a signal amplifier, a power amplifier, and a filtering unit. The antenna in the communication device can be used as a transmitting antenna or a receiving antenna. The transceiver unit may include a baseband and a receiving end. The baseband provides signals of at least one frequency band, such as 2G signals, 3G signals, 4G signals, 5G signals, etc., and transmits the signals of at least one frequency band to the radio frequency transceiver. After the antenna in the communication system receives the signal, it can be processed by the filtering unit, power amplifier, signal amplifier, and radio frequency transceiver and then transmitted to the receiving end in the transceiver unit. The receiving end may be, for example, a smart gateway.

[0063] Furthermore, a radio frequency transceiver is connected to the transceiver unit and is used to modulate the signals sent by the transceiver unit or to demodulate the signals received by the antenna and transmit them back to the transceiver unit. Specifically, the radio frequency transceiver may include a transmitting circuit, a receiving circuit, a modulation circuit, and a demodulation circuit. After the transmitting circuit receives various types of signals provided by the baseband, the modulation circuit can modulate these various types of signals provided by the baseband and then transmit them to the antenna. The antenna receives the signal and transmits it to the receiving circuit of the radio frequency transceiver. The receiving circuit transmits the signal to the demodulation circuit, which demodulates the signal and transmits it to the receiving end.

[0064] Furthermore, the RF transceiver is connected to a signal amplifier and a power amplifier, which are then connected to a filtering unit, which is connected to at least one antenna. When the communication system transmits signals, the signal amplifier is used to increase the signal-to-noise ratio of the signal output by the RF transceiver before transmitting it to the filtering unit. The power amplifier is used to amplify the power of the signal output by the RF transceiver before transmitting it to the filtering unit. The filtering unit may specifically include a duplexer and a filtering circuit. The filtering unit combines the signals output by the signal amplifier and the power amplifier, filters out noise, and then transmits them to the antenna, which radiates the signal. When the communication system receives signals, the antenna receives the signal and transmits it to the filtering unit. The filtering unit filters out noise from the signal received by the antenna and transmits it to the signal amplifier and power amplifier. The signal amplifier amplifies the signal received by the antenna to increase the signal-to-noise ratio. The power amplifier amplifies the power of the signal received by the antenna. The signal received by the antenna is processed by the power amplifier and the signal amplifier before being transmitted to the RF transceiver, which then transmits it to the transceiver unit.

[0065] In some examples, the signal amplifier may include various types of signal amplifiers, such as a low noise amplifier, which is not limited herein.

[0066] In some examples, the circularly polarized antenna provided by the embodiments of the present disclosure further includes a power management unit, which is connected to a power amplifier to provide the power amplifier with a voltage for amplifying a signal.

[0067] In a second aspect, an embodiment of the present disclosure provides an electronic device, which may include any of the above circularly polarized antennas. It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto.

[0068] It is obvious to those skilled in the art that various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A circularly polarized antenna, which comprises a first dielectric layer and a second dielectric layer arranged oppositely, and four antenna elements arranged in an array; The antenna unit includes a first radiation electrode, a reference electrode layer, a first isolation component, and a second isolation component; The first radiation electrode is disposed on a side of the first dielectric layer facing away from the second dielectric layer, the reference electrode layer is disposed on a side of the second dielectric layer facing away from the first dielectric layer, the first isolation component is integrated on the first dielectric layer, and the positive projections of the first isolation component and the second isolation component on the plane where the first dielectric layer is located both define the positive projection of the first radiation electrode on the plane where the first dielectric layer is located within their respective interiors; The positive projections of the first radiation electrode and the reference electrode layer on the plane where the first dielectric layer is located at least partially overlap; wherein, The first radiation electrode has a U-shaped first through groove, the first through groove has a first side wall and a second side wall arranged oppositely, and the length of the first side wall is greater than the length of the second side wall.

2. The circularly polarized antenna according to claim 1, wherein, The first through grooves arranged adjacent to each other in a clockwise order, the latter is obtained by rotating the former by 90° on the plane where the first dielectric layer is located, and the openings of the positive projections of the respective first through grooves on the plane where the first dielectric layer is located face different directions.

3. The circularly polarized antenna according to claim 1, wherein, The first radiation electrode includes a plurality of first side edges connected in sequence, and at least one of the first side edges is a first chamfered edge, and the angle formed by the first chamfered edge and the two first side edges connected thereto is an obtuse angle.

4. The circularly polarized antenna according to claim 3, wherein, The first radiation electrode has two first chamfered edges, and the two first chamfered edges are arranged oppositely; The first through groove further includes a first connecting portion, a first end of the first side wall is connected to the first connecting portion, and a second end of the first side wall points to one of the first chamfered edges.

5. The circularly polarized antenna according to claim 1, wherein, It further includes a third dielectric layer disposed on a side of the layer where the first radiation electrode is located facing away from the first dielectric layer; the antenna element includes a second radiation electrode and a third isolation component; the third isolation component is integrated on the third dielectric layer, the second radiation electrode is disposed on a side of the third dielectric layer facing away from the first radiation electrode, and at least partially overlaps with the positive projection of the first radiation electrode on the plane where the first dielectric layer is located.

6. The circularly polarized antenna according to claim 5, wherein, The second radiation patch has a U-shaped second through groove, and the openings of the positive projections of the second through groove and the first through groove in the antenna element on the plane where the first dielectric layer is located point in the same direction.

7. The circularly polarized antenna according to claim 6, wherein, The second through groove has a third side wall and a fourth side wall arranged oppositely, and the lengths of the third side wall and the fourth side wall are equal.

8. The circularly polarized antenna according to claim 5, wherein, The outer contour shapes of the first radiation electrode and the second radiation electrode are the same.

9. The circularly polarized antenna according to claim 5, wherein, It further includes a first electrode layer located on a side of the first dielectric layer facing away from the second dielectric layer, the first electrode layer has a first opening penetrating along its thickness direction, one of the first radiation electrodes is disposed in one of the first openings, and the positive projection of one of the first isolation components on the plane where the first dielectric layer is located surrounds the positive projection of one of the first openings on the plane where the first dielectric layer is located; the third isolation component is electrically connected to the first isolation component through the first electrode layer.

10. The circularly polarized antenna according to claim 9, wherein, For the first opening, and the first radiation electrode whose orthographic projection on the plane where the first dielectric layer is located is located at the orthographic projection of the first opening on the plane where the first dielectric layer is located, the contour of the first radiation electrode is the same as the contour of the first opening.

11. The circularly polarized antenna according to claim 9, wherein, The second isolation component is electrically connected to the third isolation component; the second isolation component is connected to the reference electrode layer; a second electrode layer is arranged on the side of the first dielectric layer close to the second dielectric layer, and the second electrode layer is electrically connected to the first isolation component and the second isolation component.

12. The circularly polarized antenna according to claim 5, wherein, The orthographic projections of the second isolation component and the third isolation component in the antenna unit on the plane where the first dielectric layer is located overlap.

13. The circularly polarized antenna according to claim 12, wherein, The side portions of the second isolation components that are arranged adjacent to each other are shared; the side portions of the third isolation components that are arranged adjacent to each other are shared.

14. The circularly polarized antenna according to claim 5, wherein, The first isolation component includes a plurality of first isolation columns arranged at intervals; the first dielectric layer has a plurality of first connection holes penetrating along the thickness direction thereof, and one first isolation column is arranged in one of the first connection holes; The second isolation component comprises a plurality of second isolation columns arranged at intervals; the second dielectric layer has a plurality of second connection holes penetrating along the thickness direction thereof, and one second isolation column is arranged in one of the second connection holes; The third isolation component includes a plurality of third isolation columns arranged at intervals; the third dielectric layer has a plurality of third connection holes penetrating along the thickness direction thereof, and one third isolation column is arranged in one of the third connection holes.

15. The circularly polarized antenna according to claim 5, wherein, It also includes a third electrode layer, which is located on the side of the third dielectric layer away from the first dielectric layer, the third electrode layer has a second opening that penetrates along the thickness direction thereof, a second radiation electrode is arranged in one of the second openings, and an orthographic projection of the third isolation component on the plane where the first dielectric layer is located surrounds an orthographic projection of the second opening on the plane where the first dielectric layer is located, and the third isolation component is electrically connected to the third electrode layer.

16. The circularly polarized antenna according to claim 1, wherein, The antenna unit further includes a feeding structure, and the feeding structure is electrically connected to the first radiation electrode.

17. The circularly polarized antenna according to claim 16, wherein, The feeding structure is a probe, and the probe is electrically connected to the first radiation electrode through a first through hole penetrating the reference electrode layer and the second dielectric layer.

18. The circularly polarized antenna according to claim 16, wherein, The center of the first through hole coincides with the orthographic projection of the center of the first radiation electrode on the plane where the first dielectric layer is located.

19. The circularly polarized antenna according to claim 1, wherein, The material of the second dielectric layer is plastic material.

20. An electronic device comprising the circularly polarized antenna according to any one of claims 1 to 19.

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