Phased array and array device

Abstract

The invention relates to the technical field of communication, and particularly discloses a phased array and an array device, and the phased array comprises a parasitic patch which is pasted on the first surface of a first dielectric plate; the excitation patch is attached to the second surface of the second dielectric plate, the parasitic patch is located above the excitation patch, the parasitic patch is introduced on the basis of a single patch, one resonance point is expanded into double resonance points, the bandwidth is increased, sufficient bandwidth allowance is achieved, and in addition, a suppression gap used for suppressing cavity resonance is formed in the first ground surface; the slot is formed in the first ground surface, so that resonance in the cavity can be avoided, the broadband is widened, the performance of the phased array is improved, a foundation is laid for miniaturization and high-density integration, and the phased array can be better applied to various millimeter wave communication scenes such as dual-linear polarization and circular polarization.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a phased array and an array device. Background Art

[0002] Microstrip antennas are widely used in modern communication systems due to their simple structure, low manufacturing cost, and good compatibility with integrated circuits. However, existing microstrip antenna technology faces key challenges, such as narrow bandwidth, poor unit consistency, and difficulty in achieving dual polarization, which restrict its application in high-performance communication systems.

[0003] To address the narrow operating frequency band, the industry typically employs three main approaches: reducing the Q (quality factor), modifying the equivalent circuit, and improving the feed method. Reducing the Q is typically achieved by selecting a PCB with a lower Dk (dielectric constant) value or a thicker PCB as the antenna radiator substrate. However, a lower Dk value increases the antenna's physical size, posing challenges for miniaturization; while a thicker PCB easily excites surface waves, degrading the antenna's radiation performance. Therefore, this approach has significant limitations and yields limited improvement.

[0004] Modifying the equivalent circuit is primarily accomplished by creating slots in the radiator or introducing parasitic radiators. While creating slots in the radiator can broaden the bandwidth, it also degrades the antenna pattern. Parasitic radiators can be introduced to avoid this degradation, and can be implemented in two ways: in-layer and out-of-layer. In-layer implementation increases the planar dimensions, making high-density integration difficult and preventing effective application in array antennas. In-layer implementation is currently the preferred solution, but square and rectangular radiators are commonly used, resulting in divergent edge field distributions and severe mutual coupling between elements, which degrades the antenna pattern.

[0005] Improved feed methods typically employ slot-coupled feeding technology, using H-shaped or dog-bone-shaped coupling slots in conjunction with microstrip or stripline excitation to achieve better impedance matching and thus expand bandwidth. However, these specially shaped slots require a large area, making them difficult to flexibly apply in dual-polarization applications.

[0006] To address the problem of poor unit consistency, the main technologies currently used are EBG (electromagnetic band gap), DGS (defective ground structure), U-shaped branches or irregular branches to reduce mutual coupling between units and improve consistency. EBG achieves stopband characteristics by constructing a periodic structure around the radiator, but this structure requires a large size, which is not conducive to antenna miniaturization and is difficult to arrange between units. Its stopband is often narrow and unsuitable for broadband applications. DGS achieves stopband characteristics by etching a specific shape of slot structure in the antenna reference ground, but it also faces the limitation of a narrow stopband. The disadvantages of U-shaped or irregular branches are similar to those of EBG. They occupy a large size, are difficult to miniaturize, and have a narrow stopband, making them unsuitable for broadband applications.

[0007] To address the issue of dual-polarization implementation, existing technologies primarily employ two approaches: First, different polarizations share a single coupling slot, but the feeders are arranged on different layers. This approach, because the same coupling slot is used but the feeders are different, leads to mutual interference between the different polarizations, resulting in high design complexity and poor polarization isolation and consistency. Second, different polarizations use different coupling slots, but the feeders are arranged asymmetrically on the same layer, resulting in poor consistency between polarizations and unsatisfactory dual-polarization implementation.

[0008] There are also many deficiencies in the existing related patent technologies. For example, please refer to Figure 1 The Chinese patent with authorization announcement number CN208385625U proposes a patented millimeter wave structure operating at 25~32.5GHz, which has broadband capabilities. However, its structure is relatively complex, and the patch shape and coupling gap design are relatively complex. In addition, the two feed lines are distributed in different layers, which can easily lead to inconsistent polarization due to processing errors. At the same time, it does not have the evolution capability of circular polarization schemes.

[0009] Please refer to Figure 2 A Chinese patent with authorization publication number CN210744177U proposes a broadband millimeter-wave phased array antenna that uses a circular patch antenna and employs air cavity loading technology. However, the patent's hollowing-out design in the dielectric makes the PCB highly susceptible to deformation, posing reliability risks. Furthermore, the patent only supports single-polarization excitation and lacks dual-polarization capability or circular polarization evolution. Summary of the Invention

[0010] The object of the present invention is to provide a phased array and an array device to avoid resonance in the cavity, increase bandwidth margin, and thus improve polarization effect.

[0011] The present invention discloses a phased array comprising: a fourth dielectric plate, a third dielectric plate, a first ground surface, a second dielectric plate and a first dielectric plate which are sequentially stacked along a first direction; a parasitic patch, provided on a first surface of the first dielectric plate, wherein the first surface is a surface away from the second dielectric plate; an excitation patch provided on a second surface of the second dielectric plate, wherein the second surface is a surface away from the third dielectric plate, and the parasitic patch overlaps with an orthographic projection of the excitation patch in the first direction; A suppression gap for suppressing cavity resonance is provided on the first ground surface; A coupling gap is also provided on the first ground surface; The first feeding structure is provided on the third surface of the fourth dielectric plate and is used to generate a polarization signal; wherein the third surface is a surface close to the third dielectric plate.

[0012] Furthermore, the suppression gap includes: a first suppression gap and a second suppression gap; The first suppression slit extends along the second direction, and the second suppression slit extends along the third direction. The second direction is a length direction of the second dielectric plate, and the third direction is a width direction of the second dielectric plate.

[0013] Furthermore, the shapes of the parasitic patch and the excitation patch include circular, rectangular and irregular shapes.

[0014] Furthermore, it also includes a grounding frame composed of rectangular strips, which is arranged around the four sides of the first dielectric plate and is grounded through vias.

[0015] Furthermore, the coupling slot includes: a first coupling slot and a second coupling slot; the feeding structure includes a first feeding line and a second feeding line; The radio frequency signals are fed into the feeding ports of the first feed line and the second feed line respectively, and then coupled through the first coupling slot and the second coupling slot respectively to obtain the first coupled signal and the second coupled signal; The first coupling signal and the second coupling signal are used to sequentially excite the excitation patch and the parasitic patch.

[0016] Furthermore, the shapes of the first feed line and the second feed line include L-shape; the shapes of the first coupling slot and the second coupling slot include U-shape, rectangle, circle and cross.

[0017] Furthermore, projections of the first coupling slot and the second coupling slot along the first direction are symmetrically arranged with respect to the central axis of the parasitic patch and the excitation patch; Projections of the first feed line and the second feed line along the first direction are symmetrically arranged about the central axis of the parasitic patch and the excitation patch; The first coupling slot and the first feed line's orthographic projections along the first direction intersect to obtain a first orthographic projection, and the second coupling slot and the second feed line's orthographic projections along the first direction intersect to obtain a second orthographic projection; the first orthographic projection and the second orthographic projection are mirror-symmetrical.

[0018] Furthermore, it also includes a third feed line, a fourth feed line, a first feed hole and a second feed hole; The signal feeding end of the third feeder is connected to the signal feeding end of the first feeder through a first feed hole; the signal feeding end of the fourth feeder is connected to the signal feeding end of the second feeder through a second feed hole.

[0019] Furthermore, it also includes a circular polarization generator, The circular polarization generator is used to split the radio frequency signal into two first differential signals and a second differential signal with a first phase difference, or into two third differential signals and a fourth differential signal with a second phase difference; the third feeder is used to receive the first differential signal or the third differential signal, and the fourth feeder is used to receive the second differential signal or the fourth differential signal.

[0020] Furthermore, the ground hole is arranged around the first feeder, the second feeder, the third feeder, the fourth feeder and the circular polarization generator.

[0021] On the other hand, the present invention further provides an array device, which adopts the above-mentioned phased array, wherein the phased array is arranged in an array.

[0022] Compared with the prior art, the present invention has at least the following technical effects: The present invention arranges a parasitic patch on the first surface of the first dielectric plate; arranges an excitation patch on the second surface of the second dielectric plate, and the parasitic patch is located above the excitation patch. The parasitic patch is introduced on the basis of a single patch, and the bandwidth is increased from one resonance point to two resonance points, thereby achieving sufficient bandwidth margin. In addition, slots are opened on the first surface to avoid resonance in the cavity, widen the bandwidth, improve the performance of the phased array, and lay the foundation for miniaturization and high-density integration, so that it can be better applied to various millimeter wave communication scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of a millimeter wave broadband filtering antenna in the prior art; Figure 2 A schematic diagram of the structure of a millimeter wave phased array antenna in the prior art; Figure 3 Schematic diagram of the structure of the phased array in the first embodiment of the present invention; Figure 4is a frequency response curve diagram in Example 1 of the present invention; Figure 5 The polarization scheme of 0° or 90° in the first embodiment of the present invention; Figure 6 The polarization scheme of +45° or -45° in the first embodiment of the present invention; Figure 7 is the design curve of the n258 frequency band radio frequency signal in the first embodiment of the present invention; Figure 8 is another schematic structural diagram of the phased array in the second embodiment of the present invention; Figure 9 Schematic diagram of the structure of some layers in the phased array in the second embodiment of the present invention; Figure 10 is a cross-sectional view of some layers in the phased array in the second embodiment of the present invention; Figure 11 This is the return loss performance curve of the Ka-band form in Example 2 of the present invention; Figure 12 This is a return loss performance curve of the K-band form in the second embodiment of the present invention; Figure 13 Schematic diagram of the structure of the array device in the third embodiment of the present invention.

[0024] Description of the drawings: fourth dielectric plate 12, third dielectric plate 9, first ground surface 6, second dielectric plate 5, first dielectric plate 3, parasitic patch 1, excitation patch 4, first suppression slot 14, second suppression slot 15, ground frame 2, first coupling slot 7, second coupling slot 8, first feed line 10, second feed line 11, third feed line 17, fourth feed line 18, circular polarization generator 24, first feed hole 19, second feed hole 20, signal input point 25, ground hole 22, phased array 100, fifth dielectric plate 21, sixth dielectric plate 28, seventh dielectric plate 23, eighth dielectric plate 29, ninth dielectric plate 30, second ground surface 26, third ground surface 27. DETAILED DESCRIPTION

[0025] A phased array and array device of the present invention will be described in detail below with reference to schematic diagrams, which illustrate preferred embodiments of the present invention. It should be noted that the following description is intended to enable those skilled in the art to understand and implement the present invention, and is for the purpose of illustrating rather than limiting the scope of the present invention. Those skilled in the art should understand that, based on the teachings of this specification, various forms of modification, equivalent replacement or improvement may be made to the specific embodiments described without departing from the core spirit and principles of the present invention. For example, the technical features in different embodiments may be cross-combined to form a new technical solution. As long as no technical contradictions arise, these variations and combinations shall fall within the scope of protection claimed by the present invention.

[0026] The following paragraphs describe the present invention in more detail by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are greatly simplified and not to exact scale, and are provided solely for the purpose of assisting in the description of the embodiments of the present invention.

[0027] Example 1 Please refer to Figure 3 This embodiment discloses a phased array 100, comprising: a fourth dielectric plate 12, a third dielectric plate 9, a first ground surface 6, a second dielectric plate 5, and a first dielectric plate 3 stacked in sequence along a first direction.

[0028] A parasitic patch 1 is provided on the first surface of the first dielectric plate 3, wherein the first surface is the surface away from the second dielectric plate 5; an excitation patch 4 is provided on the second surface of the second dielectric plate 5, wherein the second surface is the surface away from the third dielectric plate 9, and the parasitic patch 1 overlaps with the orthographic projection of the excitation patch 4 in the first direction; a suppression gap for suppressing cavity resonance is provided on the first ground surface 6; a coupling gap is also provided on the first ground surface 6; a first feeding structure is provided on the third surface of the fourth dielectric plate 12, for generating a polarization signal; wherein the third surface is the surface close to the third dielectric plate 9.

[0029] It can be understood that the first direction is the vertical direction, which is also the basic direction of up and down stacking in conventional knowledge.

[0030] In this embodiment, a parasitic patch 1 is attached to the first surface of the first dielectric plate 3; an excitation patch 4 is attached to the second surface of the second dielectric plate 5, and the parasitic patch 1 is located above the excitation patch 4. The parasitic patch 1 is introduced on the basis of a single patch, and the bandwidth is increased from one resonance point to two resonance points, thereby achieving sufficient bandwidth margin. In addition, the opening of gaps and grooves on the first ground surface 6 can avoid the occurrence of resonance in the cavity, widen the bandwidth, improve the performance of the phased array 100, and lay the foundation for miniaturization and high-density integration, so that it can be better applied to various millimeter-wave communication scenarios.

[0031] Furthermore, the suppression gap includes: a first suppression gap 14 and a second suppression gap 15; the first suppression gap 14 extends along the second direction, and the second suppression gap 15 extends along the third direction, the second direction is the length direction of the second dielectric plate 5, and the third direction is the width direction of the second dielectric plate 5.

[0032] In this embodiment, the first suppression slot 14 perturbs electromagnetic waves propagating along the length direction, while the second suppression slot 15 perturbs electromagnetic waves propagating along the width direction. This dual orthogonal perturbation disrupts the resonance condition. Because the suppression slots are placed directly on the ground surface, no additional space is required, and the orthogonal layout can cover resonant modes with different polarization directions.

[0033] Please refer to Figure 4 The frequency response graph shows frequency on the X-axis and amplitude on the Y-axis. The blue curve shows the amplitude response when the slot is included in the design. The red curve shows the amplitude response when the slot is not included in the design. As can be seen from the graph, without the slot, resonance occurs at a specific frequency in the K band, resulting in gain degradation.

[0034] In this embodiment, the shapes of the parasitic patch 1 and the excitation patch 4 can be selected according to actual conditions, such as circular, rectangular and irregular shapes, which are not specifically limited here. Circular patches are preferably used.

[0035] The advantages of using a circular structure for both the parasitic patch 1 and the excitation patch 4 are: first, the circular structure itself is easy to miniaturize, thus facilitating high-density integration. Second, its inherent symmetry helps reduce the impact of the surrounding environment on fringe fields, improving performance stability. Furthermore, this symmetry facilitates the expansion from single polarization to dual polarization.

[0036] For further information, please refer to Figure 3 The phased array 100 further includes a grounding frame 2 composed of rectangular strips. The grounding frame 2 is arranged around the first dielectric plate 3 and is grounded through vias.

[0037] In this embodiment, the ground frame 2 can limit the radiation aperture of the array element, hinder the transmission path of the surface wave, reduce the mutual coupling between the array elements, and improve the consistency of the array elements. The ground frame 2 has a non-resonant structure, has no bandwidth limitation, and is small in size, which facilitates high-density integration and preparation.

[0038] Furthermore, the coupling slot includes: a first coupling slot 7 and a second coupling slot 8 ; the feeding structure includes a first feed line 10 and a second feed line 11 .

[0039] Specifically, RF signals are fed into the feed ports of the first feed line 10 and the second feed line 11, respectively, and then coupled through the first coupling slot 7 and the second coupling slot 8, respectively, to obtain a first coupled signal and a second coupled signal. The first coupled signal and the second coupled signal are used to sequentially excite the circular excitation patch 4 and the circular parasitic patch 1.

[0040] In a specific example, the shapes of the first coupling slot 7 and the second coupling slot 8 include U-shape, rectangle, circle and cross. Of course, those skilled in the art may also adopt other shapes according to actual conditions, and no specific limitation is made here.

[0041] In this embodiment, by adjusting the sizes of the first coupling slot 7 and the second coupling slot 8, the structure can be effectively miniaturized. In addition, through mirror replication, two consistent feeding structures can be achieved, thereby extending single polarization to dual polarization and achieving consistency between the two polarizations in conjunction with the circular patch.

[0042] In another specific example, the first feeder 10 and the second feeder 11 are L-shaped. Of course, those skilled in the art may also adopt other shapes according to actual conditions, and no specific limitation is made here.

[0043] For further information, please refer to Figure 5 and Figure 6 , the projections of the first coupling slot 7 and the second coupling slot 8 along the first direction are symmetrically arranged about the central axis of the parasitic patch 1 and the excitation patch 4; Projections of the first feed line 10 and the second feed line 11 along the first direction are symmetrically arranged about the central axis of the parasitic patch 1 and the excitation patch 4; The first coupling slot 7 and the first feed line 10 intersect with each other in the first direction to obtain a first orthographic projection, and the second coupling slot 8 and the second feed line 11 intersect with each other in the first direction to obtain a second orthographic projection; the first orthographic projection and the second orthographic projection are mirror-symmetrical.

[0044] In this embodiment, thanks to the symmetry of the above structure and the flexible feeding design, the excitation mode of this embodiment can not only achieve + / -90° (for circular polarization), but can also be configured as + / -45° or other angles to meet different polarization requirements.

[0045] Please refer to Figure 7 The figure shows the design curve for achieving n258 (24.25-27.5 GHz) using the aforementioned phased array 100. As can be seen, the return loss for both feed ports within the required frequency band is below -10 dB (Amplitude < 4.89 dB, where Amplitude represents amplitude), and good unit gain is achieved (Amplitude > 4.89 dB). Furthermore, the isolation between the two ports is greater than 17 dB, demonstrating excellent overall performance, achieving both broadband miniaturization and high performance.

[0046] It is understandable that the above-mentioned phased array 100 has good versatility and can be applied to millimeter wave frequency bands including but not limited to n258, and can also be applied to other millimeter wave frequency bands including n257 (26.5~29.5 GHz), so no specific restrictions are made here.

[0047] In another specific embodiment, the thickness of the dielectric plate determines the design bandwidth of the antenna, which can be set according to actual conditions and is not specifically limited here.

[0048] Example 2 Based on the same inventive concept, this embodiment discloses another phased array 100. This embodiment further expands the phased array 100 disclosed in the first embodiment to address current satellite communication scenarios, such as the circular polarization implementation required for typical terrestrial communications in the Ka-band (receiving: 17.7-21.2 GHz, transmitting 27.5-31 GHz) or Ku-band (10-14 GHz).

[0049] Please refer to Figure 8-9 , wherein the phased array 100 further includes a third feed line 17 , a fourth feed line 18 , a first feed hole 19 and a second feed hole 20 .

[0050] Specifically, the signal feeding end of the third feeder 17 is connected to the signal feeding end of the first feeder 10 through the first feed hole 19 ; the signal feeding end of the fourth feeder 18 is connected to the signal feeding end of the second feeder 11 through the second feed hole 20 .

[0051] And, a circular polarization generator 24; the circular polarization generator 24 is used to divide the radio frequency signal into two first differential signals and a second differential signal with a phase difference of 0°, or into two third differential signals and a fourth differential signal with a phase difference of 90°; the first differential signal and the third differential signal are input to the third feeder 17, and the second differential signal and the fourth differential signal are input to the fourth feeder 18.

[0052] In a specific example, the RF signal is fed from the signal input point 25 and is divided into two first differential signals and a second differential signal with a first phase difference, or into two third differential signals and a fourth differential signal with a second phase difference, through the circular polarization generator 24 .

[0053] The first differential signal and the second differential signal pass through the third feeder 17 and the fourth feeder 18, respectively, and are input to the second feeder 11 and the first feeder 10, respectively, through the first feed hole 19 and the second feed hole 20; or, the third differential signal and the fourth differential signal are input to the third feeder 17 and the fourth feeder 18, respectively, and are input to the second feeder 11 and the first feeder 10, respectively, through the first feed hole 19 and the second feed hole 20.

[0054] In this embodiment, by providing a circular polarization generator 24, the radio frequency signal is divided into two first differential signals and a second differential signal with a first phase difference, or into two third differential signals and a fourth differential signal with a second phase difference, so that the structure can adapt to different forms of polarization, such as left-handed or right-handed.

[0055] Furthermore, by scaling the overall size of the phased array 100, it can be flexibly adapted to meet the application requirements of different frequency bands, demonstrating excellent versatility. The phased array 100 also features wide bandwidth and a compact structure, achieving a combination of high performance and miniaturization.

[0056] Furthermore, in order to increase the shielding protection of the feeder, this embodiment further provides a ground hole 22 , which is arranged around the first feeder 10 , the second feeder 11 , the third feeder 17 , the fourth feeder 18 and the circular polarization generator 24 .

[0057] In this embodiment, by forming a shielding structure around the feed line and the circular polarization generator 24, the electromagnetic shielding effect is effectively enhanced, the interference of external electromagnetic interference on the signal is reduced, the signal transmission quality and stability are improved, and the electromagnetic radiation is reduced.

[0058] For a specific example, see Figure 10 , showing the third dielectric plate 9, the fourth dielectric plate 12, the fifth dielectric plate 21, the sixth dielectric plate 28, the seventh dielectric plate 23, the eighth dielectric plate 29 and the ninth dielectric plate 30 stacked in sequence within the phased array 100, with a third ground surface 27 provided between every two layers of dielectric plates and on the lower surface of the ninth dielectric plate 30.

[0059] The first feedthrough 19 and the second feedthrough 20 are provided through the third dielectric plate 9 to the ninth dielectric plate 30. The second feedthrough 20 extends through the third dielectric plate 9 to the second ground surface 26 between the seventh dielectric plate 23 and the eighth dielectric plate 29. The third feedline 17 and the fourth feedline 18 are respectively provided on the second ground surface 26 between the seventh dielectric plate 23 and the eighth dielectric plate 29. The circular polarization generator 24 is provided on the third ground surface 27 at the bottom surface of the ninth dielectric plate 30.

[0060] Please refer to Figure 11-12 , are the return loss performance curves of Ka and K bands respectively achieved by the phased array 100 disclosed in this embodiment. Figure 11It can be seen that the return loss (S11) remains below -10dB in the entire Ka-band range, with the best match being achieved around 27.75GHz (S11 value of about -30dB), and also remaining below -10dB around 29GHz. Figure 12 It can be seen that in the K band (17.7~21.2GHz), the return loss (S11) also continues to remain below -10dB, especially around 19.5GHz, where it achieves a good match of less than -30dB.

[0061] Example 3 Based on the same inventive concept, this embodiment further provides an array device, which adopts the phased array 100 disclosed in the first embodiment, and may also adopt the phased array 100 in the second embodiment, or adopt both the phased array 100 disclosed in the first embodiment and the phased array 100 in the second embodiment.

[0062] For details, please refer to Figure 13 In the column direction, the antenna elements are translated or rotated at equal intervals Dx to obtain M rows of antenna elements. In the row direction, the antenna elements are translated or rotated at equal intervals Dy to obtain N columns of antenna elements. The final antenna array consists of M × N elements. Where M and N are both positive integers.

[0063] In addition, the technical effects achieved by the array device disclosed in this embodiment are the same as the technical effects achieved by the phased array 100 disclosed in the first embodiment and / or the second embodiment, and are not described in detail here.

[0064] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A phased array, characterized in that: include: A fourth dielectric plate, a third dielectric plate, a first ground surface, a second dielectric plate, and a first dielectric plate are sequentially stacked along a first direction; a parasitic patch, provided on a first surface of the first dielectric plate, wherein the first surface is a surface away from the second dielectric plate; an excitation patch provided on a second surface of the second dielectric plate, wherein the second surface is a surface away from the third dielectric plate, and the parasitic patch overlaps with an orthographic projection of the excitation patch in the first direction; A suppression gap for suppressing cavity resonance is provided on the first ground surface; A coupling gap is also provided on the first ground surface; The first feeding structure is provided on the third surface of the fourth dielectric plate and is used to generate a polarization signal; wherein the third surface is a surface close to the third dielectric plate.

2. The phased array according to claim 1, wherein: The suppression gap includes: a first suppression gap and a second suppression gap; The first suppression slit extends along the second direction, and the second suppression slit extends along the third direction. The second direction is a length direction of the second dielectric plate, and the third direction is a width direction of the second dielectric plate.

3. The phased array according to claim 2, wherein: The shapes of the parasitic patch and the excitation patch include circular, rectangular and irregular shapes.

4. The phased array according to claim 3, wherein: It also includes a grounding frame composed of rectangular strips, which is arranged around the four sides of the first dielectric plate and is grounded through vias.

5. The phased array according to claim 3, wherein: The coupling slot includes: a first coupling slot and a second coupling slot; the feeding structure includes a first feeding line and a second feeding line; The radio frequency signals are fed into the feeding ports of the first feed line and the second feed line respectively, and then coupled through the first coupling slot and the second coupling slot respectively to obtain the first coupled signal and the second coupled signal; The first coupling signal and the second coupling signal are used to sequentially excite the excitation patch and the parasitic patch.

6. The phased array according to claim 5, wherein: The shapes of the first feed line and the second feed line include L-shapes; the shapes of the first coupling slot and the second coupling slot include U-shapes, rectangles, circles, and crosses.

7. The phased array according to claim 6, wherein: Projections of the first coupling slot and the second coupling slot along the first direction are symmetrically arranged about the central axis of the parasitic patch and the excitation patch; Projections of the first feed line and the second feed line along the first direction are symmetrically arranged about the central axis of the parasitic patch and the excitation patch; The first coupling slot and the first feed line's orthographic projections along the first direction intersect to obtain a first orthographic projection, and the second coupling slot and the second feed line's orthographic projections along the first direction intersect to obtain a second orthographic projection; the first orthographic projection and the second orthographic projection are mirror-symmetrical.

8. The phased array according to claim 7, wherein: Also includes a third feed line, a fourth feed line, a first feed hole and a second feed hole; The signal feeding end of the third feeder is connected to the signal feeding end of the first feeder through the first feed hole; the signal feeding end of the fourth feeder is connected to the signal feeding end of the second feeder through the second feed hole.

9. The phased array according to claim 8, wherein: Also included is a circular polarization generator; The circular polarization generator is used to split the radio frequency signal into two first differential signals and a second differential signal with a first phase difference, or into two third differential signals and a fourth differential signal with a second phase difference; the third feeder is used to receive the first differential signal or the third differential signal, and the fourth feeder is used to receive the second differential signal or the fourth differential signal.

10. The phased array according to claim 9, wherein: It also includes a ground hole, which is arranged around the first feed line, the second feed line, the third feed line, the fourth feed line and the circular polarization generator.

11. An array device, characterized in that: The method comprises a plurality of phased arrays according to any one of claims 1 to 10, wherein the phased arrays are arranged in an array.

Images