Novel plate shell for flat plate array antenna

Abstract

The utility model relates to a novel plate shell for a flat plate array antenna, which comprises a bottom plate provided with a plurality of clamping grooves, a cover plate is stacked on the bottom plate, a plurality of through grooves corresponding to the clamping grooves are arranged on a plate body of the cover plate in an array manner, the inner side wall of a groove cavity of each through groove is also provided with an annular limiting step, and the annular limiting steps are arranged on the inner side wall of the groove cavity of each through groove. The clamping groove and the through groove are matched to form a containing groove cavity, so that the annular limiting step can limit the working position of the mounting plate in the containing groove cavity; the cover plate is also provided with a wave suppression groove and an isolation vertical plate which can carry out surface wave blocking between the adjacent through grooves. According to the utility model, the isolation between the signal receiving antenna and the signal transmitting antenna can be improved, and the quality and accuracy of received signals can be improved.

Description

Technical Field

[0001] This utility model relates to the technical field of flat panel antenna accessories, and in particular to a novel plate shell for flat panel array antennas. Background Technology

[0002] High-gain antennas are the front end of modern wireless microwave communication and have a significant impact on overall communication quality. Traditional high-gain microwave antennas include parabolic antennas and variations of parabolic antennas such as Cassegrain and Gregorian antennas. However, with the increasing sophistication and differentiation of modern communication, traditional microwave antennas can no longer meet the needs of some application scenarios. For example, in urban scenarios, high-gain antennas are required to have low profile and planar properties to achieve an aesthetically pleasing appearance, which traditional parabolic antennas cannot meet. A phased array antenna is an antenna system composed of multiple antenna elements. By controlling the phase and amplitude of each element, the beam direction and shape can be flexibly adjusted. Compared to traditional antennas, microstrip planar array antennas are characterized by small size, light weight, low profile, and easy standardization, while also offering advantages such as low cost, easier integration, and mass production capability.

[0003] However, existing microstrip planar array antennas, limited by size and deployment space, suffer from insufficient spacing and isolation between the signal receiving and transmitting antennas, leading to signal leakage. The signal receiving and transmitting antennas are key components of a multi-band planar array antenna, and their coupling is a critical factor affecting system communication and detection performance. Due to their low isolation, existing microstrip planar array antennas are prone to transmitting signal leakage, which can overwhelm weak return signals, distorting the received signal and reducing the sensitivity and accuracy of the data acquired. This negatively impacts antenna communication and microwave detection performance. Therefore, it is necessary to optimize the spatial isolation of small-sized planar array antennas to improve the isolation between the signal receiving and transmitting antennas. Utility Model Content

[0004] The purpose of this invention is to provide a novel plate housing for planar array antennas that can improve the isolation between the signal receiving antenna and the signal transmitting antenna, thereby improving the quality and accuracy of the received signal. This solves the problem that existing planar array antennas are limited by structural volume, resulting in insufficient space for signal isolation between the receiving and transmitting antennas. This makes it impossible to achieve a high degree of isolation and ensure the isolation effect, which can easily lead to signal wave leakage at the transmitting end, drowning out the weak return signal wave, and causing deviation in the signal wave received at the receiving end, thus affecting the accuracy of the antenna's received signal.

[0005] The technical solution adopted by this utility model is as follows: a novel plate shell for a planar array antenna, comprising a base plate with several slots, a cover plate stacked on the base plate, and several through slots corresponding to the slots being arrayed on the cover plate. An annular limiting step is also provided on the inner side wall of the through slot, so that the slots and the through slots cooperate to form a receiving cavity, thereby the annular limiting step can limit the working position of the mounting plate in the receiving cavity; the cover plate is also provided with a wave-suppressing groove and an isolation vertical plate that can block surface waves between adjacent through slots.

[0006] According to a preferred embodiment, the slot includes a first rectangular slot centered on the body of the base plate, and a second rectangular slot and a third rectangular slot formed around the first rectangular slot. The four second rectangular slots are arranged circumferentially between the first rectangular slot and the edge of the base plate; the four third rectangular slots are formed on the corner of the base plate in a rotationally symmetrical manner.

[0007] According to a preferred embodiment, the mounting plate includes a first multi-slot plate installed in the first rectangular slot and a second single-slot plate installed in the second rectangular slot and the third rectangular slot.

[0008] According to a preferred embodiment, the first rectangular groove is provided with a groove cavity that has a groove depth difference with the second rectangular groove and the third rectangular groove, so that the first multi-groove plate in the first rectangular groove and the second single-groove plate in the second rectangular groove and the third rectangular groove are respectively on two mutually parallel depth surfaces.

[0009] According to a preferred embodiment, the wave-suppressing groove includes a wave-suppressing strip groove located between the first rectangular groove and the second rectangular groove and formed in the cover plate, and a wave-suppressing right-angle groove surrounding the third rectangular groove and penetrating the side of the cover plate.

[0010] According to a preferred embodiment, the plurality of wave-suppressing grooves are spaced apart in a manner parallel to the edge line of the base plate, and the length of the wave-suppressing grooves in the grooving direction is greater than the width of the first rectangular groove and the second rectangular groove.

[0011] According to a preferred embodiment, the isolation vertical plate is arranged on the surface of the cover plate in a manner parallel to and staggered with the wave-suppressing groove; the isolation corner plate of the isolation vertical plate is arranged on the surface of the cover plate in a manner parallel to the wave-suppressing right-angle groove and located between the wave-suppressing right-angle groove and the third rectangular groove.

[0012] According to a preferred embodiment, the plurality of isolation corner plates and the plurality of wave-suppressing right-angle slots isolate the second single-slot plate located in the third rectangular slot in a mutually parallel manner.

[0013] According to a preferred embodiment, the side of the cover plate is further provided with connecting corner plates that define the connection state between the cover plate and the base plate, and connecting screws are inserted into the connecting corner plates.

[0014] According to a preferred embodiment, a mounting side plate is further provided on the side edge of the base plate, and an inclined positioning block is provided on the mounting side plate to assist in positioning the assembly position of the cover plate.

[0015] The beneficial effects of this utility model are:

[0016] The first, second, and third rectangular slots provided in this application confine the signal transmitting and receiving antennas on the mounting plate and its body to different height planes, achieving a non-planar arrangement of the signal transmitting and receiving antennas and significantly improving the surface wave isolation between them. The wave-suppressing grooves and isolation vertical plates provided in this application work together to enhance the surface wave blocking effect, allowing surface waves propagating along the plate surface between the signal transmitting and receiving antennas to be suppressed and attenuated by the slot structure. This reduces signal leakage, improves signal transmission and reception accuracy, reduces errors and impacts caused by surface wave interference, and improves the quality of signal transmission and reception. The wave-suppressing grooves and isolation vertical plates provided in this application significantly improve isolation, allowing weak target echoes to be effectively received, ensuring the authenticity of the returned signal waves collected by the signal receiving antenna, improving the sensitivity and accuracy of the data collected by the signal receiving antenna, and enhancing the working effect of the planar array antenna. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a preferred novel plate shell for a planar array antenna proposed in this utility model;

[0018] Figure 2 This is a planar schematic diagram of the base plate of a preferred novel plate housing for a planar array antenna proposed in this utility model;

[0019] Figure 3 This is a cross-sectional schematic diagram of the cover plate of a preferred novel plate shell for a planar array antenna proposed in this utility model;

[0020] Figure 4 This is a cross-sectional schematic diagram at point A of a preferred novel plate housing for a planar array antenna proposed in this utility model;

[0021] Figure 5 This is a cross-sectional schematic diagram at point B of a preferred novel plate housing for a planar array antenna proposed in this utility model.

[0022] List of reference numerals

[0023] 1: Base plate; 2: Cover plate; 3: Mounting plate; 4: Wave-suppressing groove; 5: Isolation vertical plate; 11: Slot; 12: Mounting side plate; 13: Inclined positioning block; 111: First rectangular groove; 112: Second rectangular groove; 113: Third rectangular groove; 21: Through groove; 22: Annular limiting step; 23: Connecting corner plate; 24: Connecting screw; 31: First multi-groove plate; 32: Second single-groove plate; 41: Wave-suppressing strip groove; 42: Wave-suppressing right-angle groove; 51: Isolation straight plate; 52: Isolation corner plate. Detailed Implementation

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] The technical solutions provided by this utility model will be described in detail below with reference to the accompanying drawings and through embodiments. It should be noted that the descriptions of these embodiments are intended to aid in understanding this utility model, but do not constitute a limitation thereof. In some examples, because some implementation methods belong to existing or conventional technology, they are not described or are not described in detail.

[0026] Furthermore, the technical features described herein, or the steps in all the methods or processes disclosed herein, may be combined in any suitable manner in one or more embodiments, except for mutually exclusive features and / or steps. It will be readily understood by those skilled in the art that the order of steps or operations of the methods relating to the embodiments provided herein may also be altered. Any order in the drawings and embodiments is for illustrative purposes only and does not imply a requirement to follow a particular order unless explicitly stated otherwise.

[0027] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, under reasonable circumstances (without self-contradiction), include both direct and indirect connections (linkages).

[0028] The following is a detailed explanation with reference to the accompanying drawings.

[0029] Example 1

[0030] This application provides a novel housing for a planar array antenna, which includes a base plate 1, a cover plate 2, a mounting plate 3, a wave suppression groove 4, and an isolation vertical plate 5.

[0031] according to Figure 1-5 In one specific embodiment, a plurality of slots 11 for mounting antenna modules are provided on a base plate 1. A cover plate 2 is stacked on the base plate 1. A plurality of through slots 21 corresponding to the slots 11 are arrayed on the cover plate 2. An annular limiting step 22 is also provided on the inner sidewall of the through slot 21, so that the slots 11 and the through slots 21 cooperate to form a receiving cavity, thereby limiting the working position of the mounting plate 3 in the receiving cavity. Signal receiving antenna modules and signal transmitting modules are respectively embedded in the mounting plate 3 according to their positions in the receiving cavity. The cover plate 2 is also provided with a wave-suppressing groove 4 and an isolation vertical plate 5 that can block surface waves between adjacent through slots 21. The wave-suppressing groove 4 and the isolation vertical plate 5 are arranged in the same area, thereby constructing a large isolation plane perpendicular to the surface wave propagation direction through bidirectional expansion to block surface waves, so that the signal receiving antenna can effectively obtain weak and accurate return signal waves. The wave-suppressing groove 4 and the isolation vertical plate 5 provided in this application can work together to improve the blocking effect of surface waves. This allows surface waves propagating along the surface of the plate between the signal transmitting antenna and the signal receiving antenna to be suppressed and attenuated by the groove structure, reducing signal leakage, improving the accuracy of signal transmission and reception, reducing errors and effects caused by surface wave interference, and improving the quality of signal transmission and reception by the antenna. The wave-suppressing groove 4 and the isolation vertical plate 5 provided in this application can significantly improve isolation, thus enabling the effective reception of weak target echoes, ensuring the authenticity of the returned signal waves collected by the signal receiving antenna, improving the sensitivity and accuracy of the data collected by the signal receiving antenna, and enhancing the working effect of the planar array antenna.

[0032] Preferably, the slot 11 includes a first rectangular slot 111 centrally located on the base plate 1, and second rectangular slots 112 and third rectangular slots 113 surrounding the first rectangular slot 111. Preferably, the four second rectangular slots 112 are arranged circumferentially between the first rectangular slot 111 and the edge of the base plate 1. Preferably, the four third rectangular slots 113 are rotationally symmetrically located at the corners of the base plate 1. Specifically, the cross-section of the first rectangular slot 111 is larger than that of the second rectangular slots 112 and the third rectangular slots 113, so that the first multi-slot plate 31 within the first rectangular slot 111 can be used to mount multiple signal transmitting antennas to achieve multi-band signal transmission. Specifically, the second rectangular slots 112 and the third rectangular slots 113 can be used to mount second single-slot plates 32 of the same size, so that the signal receiving antennas mounted in the second single-slot plates 32 at different working positions can be used to receive signals of different frequency bands, thereby enabling a single planar array antenna to perform multi-band signal transmission and reception. More preferably, the first rectangular slot 111 is provided with a cavity having a different slot depth from the second rectangular slot 112 and the third rectangular slot 113, so that the first multi-slot plate 31 in the first rectangular slot 111 and the second single-slot plate 32 in the second rectangular slot 112 and the third rectangular slot 113 are respectively located on two parallel depth surfaces. When the first multi-slot plate 31 and the second single-slot plate 32 are located on two different mounting planes, the corresponding signal transmitting antenna and signal receiving antenna are also located on two different working planes, which changes the surface wave transmission path between the signal transmitting antenna and the signal receiving antenna on opposite planes. Although the straight-line distance between them does not change significantly, the isolation between them is significantly improved by about 25dB due to the opposite plane arrangement, and the increase in the thickness of the plate structure is small, which will not lead to excessive thickness increase. This achieves the effect of significantly improving the surface wave isolation between the signal transmitting antenna and the signal receiving antenna with a small increase in plate thickness.

[0033] Preferably, a mounting side plate 12 is provided on the side edge of the base plate 1, and an inclined positioning block 13 is provided on the mounting side plate 12 to assist in positioning the assembly position of the cover plate 2. Preferably, the inclined positioning block 13 is a trapezoidal block, which can constrict the downward docking position of the cover plate 2. The mounting side plate 12 provided in this application facilitates the detachable positioning of the cover plate 2 on the base plate 1 by means of bolt connection or other methods, and the mounting side plate 12 can also facilitate the installation of the flat panel array antenna onto the adjustment mechanism such as the adjustment gimbal. The inclined positioning block 13 provided in this application can form a small inwardly tapering slope, thereby enabling the cover plate 2 to be conveniently and accurately installed on the base plate 1.

[0034] Preferably, the side of the cover plate 2 is also provided with connecting corner plates 23 arranged circumferentially to define the connection state between it and the base plate 1. Preferably, connecting screws 24 are inserted into the connecting corner plates 23. The connecting corner plates 23 provided in this application can abut against the surface of the mounting side plate 12, so that the connecting screws 24 can be adjusted and inserted into the mounting side plate 12, thereby defining the relative positional relationship between the base plate 1 and the cover plate 2.

[0035] Preferably, the mounting plate 3 includes a first multi-slot plate 31 installed in the first rectangular slot 111 and a second single-slot plate 32 installed in the second rectangular slot 112 and the third rectangular slot 113. Preferably, the first multi-slot plate 31 is a plate structure with multiple slots on its surface, facilitating the mounting of multiple signal transmitting antennas, allowing different signal transmitting antennas to transmit signal waves in different frequency bands as needed. Preferably, the second single-slot plate 32 has only a single slot, capable of mounting a single signal receiving antenna, enabling signal receiving antennas at different workstations to receive return signal waves in different frequency bands as needed, achieving synchronous transmission and reception of multi-frequency signals. This meets the operational requirements of communication systems that need to process multiple frequency bands simultaneously, is suitable for complex communications, and improves overall communication efficiency.

[0036] Preferably, the antenna module includes a signal transmitting antenna and a signal receiving antenna. Preferably, the signal transmitting antenna can be of model AWPA-5G-600; the signal receiving antenna can be of model AWPB-5G-600. Specifically, both the signal transmitting and receiving antennas are composed of a microstrip patch, a feed network, insulator probes, and an RF connector. The feed network is mounted on the microstrip patch, and the microstrip patch and the feed network are electrically connected via two insulator probes. One end of the RF connector, which can be connected to an external wire, is soldered to the feed network.

[0037] Preferably, the wave-suppressing groove 4 includes wave-suppressing strip grooves 41 located between the first rectangular groove 111 and the second rectangular groove 112 and formed within the cover plate 2, and wave-suppressing right-angle grooves 42 surrounding the third rectangular groove 113 and penetrating the side of the cover plate 2. Preferably, the plurality of wave-suppressing strip grooves 41 are spaced apart in a manner parallel to the edge line of the base plate 1. More preferably, the length of the wave-suppressing strip grooves 41 in the slotting direction is greater than the width of the first rectangular groove 111 and the second rectangular groove 112. Preferably, the three wave-suppressing strip grooves 41 and the three wave-suppressing right-angle grooves 42 in the same region are all formed on the cover plate 2 in a spaced-out manner. More preferably, the cavity depth of the three wave-suppressing strip grooves 41 and the three wave-suppressing right-angle grooves 42 is determined according to the wavelength of the actual assembled signal transmitting antenna, thereby effectively isolating surface waves. More preferably, the spacing distance can also be determined according to the wavelength of the actual assembled signal transmitting antenna. The depth of the three wave-suppressing grooves 41 and the three wave-suppressing right-angle grooves 42 provided in this application can be set to different depths according to the different surface waves to be intercepted, thereby improving the efficiency and quality of interception.

[0038] Preferably, the isolation vertical plate 51 of the isolation vertical plate 5 is arranged on the surface of the cover plate 2 in a manner parallel to and staggered with the wave suppression groove 41. Preferably, the isolation corner plate 52 of the isolation vertical plate 5 is arranged on the surface of the cover plate 2 in a manner parallel to the wave suppression right angle groove 42 and located between the wave suppression right angle groove 42 and the third rectangular groove 113. Preferably, the three isolation vertical plates 51 and the isolation corner plate 52 in the same area are arranged on the surface of the cover plate 2 at equal intervals, and their actual spacing distance is determined according to the wavelength of the actual assembled signal transmitting antenna. More preferably, the plate height is also determined according to the wavelength of the actual assembled signal transmitting antenna, thereby effectively blocking surface waves of different frequency bands. The isolation vertical plate 51 and isolation corner plate 52 provided in this application can effectively attenuate the surface waves propagating along the plate surface between the transmitting antenna and the receiving antenna, effectively avoiding interference of surface waves on the weak return signal waves received by the receiving antenna, and improving the accuracy of signal transmission and reception. The isolation corner plate 52 provided in this application can also effectively suppress surface waves between the two receiving antennas, thereby ensuring the independence between antennas at different positions and ensuring the accuracy and quality of signal transmission and reception by the antennas.

[0039] Antenna modules such as signal transmitting antenna and signal receiving antenna are electrically connected to the controller and power supply. The control method of this application is controlled by the controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply ground is also common knowledge in the art. Furthermore, this utility model is only used to protect the mechanical device and its mechanical structural features. Therefore, this utility model will not explain the control method and circuit connection in detail.

[0040] This utility model is not limited to the above-described optional embodiments. Anyone can derive other various forms of products under the guidance of this utility model. However, regardless of any changes in shape or structure, any technical solution falling within the scope of the claims of this utility model is within the protection scope of this utility model. Those skilled in the art should understand that this utility model specification and its drawings are illustrative and do not constitute a limitation on the claims. The protection scope of this utility model is defined by the claims and their equivalents. Throughout the text, features introduced by "preferred" are merely optional and should not be construed as mandatory. Therefore, the applicant reserves the right to abandon or delete relevant preferred features at any time.

Claims

1. A novel plate housing for a planar array antenna, comprising a base plate (1) with a plurality of slots (11), characterized in that, A cover plate (2) is stacked on the base plate (1), and a plurality of through slots (21) corresponding to the slot (11) are arrayed on the plate body of the cover plate (2). An annular limiting step (22) is also provided on the inner side wall of the through slot (21), so that the slot (11) and the through slot (21) cooperate to form a receiving cavity, thereby the annular limiting step (22) can limit the working position of the mounting plate (3) in the receiving cavity; The cover plate (2) is also provided with a wave-suppressing groove (4) and an isolation vertical plate (5) that can block surface waves between adjacent through grooves (21).

2. The novel plate housing for a planar array antenna as described in claim 1, characterized in that, The slot (11) includes a first rectangular slot (111) centrally located on the base plate (1), and a second rectangular slot (112) and a third rectangular slot (113) formed around the first rectangular slot (111). The four second rectangular slots (112) are arranged circumferentially between the first rectangular slot (111) and the edge of the base plate (1); The four third rectangular slots (113) are opened on the corners of the base plate (1) in a rotationally symmetrical manner.

3. The novel plate housing for a planar array antenna as described in claim 2, characterized in that, The mounting plate (3) includes a first multi-slot plate (31) installed in the first rectangular slot (111) and a second single-slot plate (32) installed in the second rectangular slot (112) and the third rectangular slot (113).

4. The novel plate housing for a planar array antenna as described in claim 3, characterized in that, The first rectangular groove (111) is provided with a groove cavity that has a groove depth difference with the second rectangular groove (112) and the third rectangular groove (113), so that the first multi-groove plate (31) in the first rectangular groove (111) and the second single-groove plate (32) in the second rectangular groove (112) and the third rectangular groove (113) are respectively on two mutually parallel depth surfaces.

5. The novel plate housing for a planar array antenna as described in claim 4, characterized in that, The wave-suppressing groove (4) includes a wave-suppressing strip groove (41) located between the first rectangular groove (111) and the second rectangular groove (112) and opened in the cover plate (2), and a wave-suppressing right-angle groove (42) surrounding the third rectangular groove (113) and penetrating the side of the cover plate (2).

6. The novel plate housing for a planar array antenna as described in claim 5, characterized in that, The plurality of wave-suppressing grooves (41) are spaced apart in a manner parallel to the edge line of the base plate (1), and the length of the wave-suppressing grooves (41) in the grooving direction is greater than the width of the first rectangular groove (111) and the second rectangular groove (112).

7. The novel plate housing for a planar array antenna as described in claim 6, characterized in that, The isolation vertical plate (5) has isolation straight plates (51) arranged on the surface of the cover plate (2) in a manner that is parallel to and staggered with the wave-suppressing groove (41); The isolation corner plate (52) of the isolation vertical plate (5) is arranged on the surface of the cover plate (2) in such a way that it is parallel to the wave-suppressing right angle groove (42) and is located between the wave-suppressing right angle groove (42) and the third rectangular groove (113).

8. The novel plate housing for a planar array antenna as described in claim 7, characterized in that, The plurality of isolation corner plates (52) and the plurality of wave-suppressing right-angle slots (42) isolate the second single-slot plate (32) located in the third rectangular slot (113) in a parallel manner.

9. The novel plate housing for a planar array antenna as described in claim 8, characterized in that, The side of the cover plate (2) is also provided with connecting corner plates (23) that can limit the connection state between it and the bottom plate (1), and connecting screws (24) are inserted into the connecting corner plates (23).

10. The novel plate housing for a planar array antenna as described in claim 9, characterized in that, A mounting side plate (12) is also provided on the side edge of the base plate (1), and an inclined positioning block (13) is provided on the mounting side plate (12) to assist in positioning the assembly position of the cover plate (2).

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