Integrated broadband detecting and receiving direction-finding array

Abstract

The embodiment of the utility model discloses an integrated broadband detecting and receiving direction finding array, and belongs to the technical field of radio direction finding. The direction finding array comprises a shell composed of a first bottom plate and an antenna cover covering the first bottom plate, and a plurality of planar helical antennas are installed on the first bottom plate. The plurality of planar helical antennas comprise a plurality of low-frequency antennas and a plurality of high-frequency antennas, the second bottom plate is arranged on the first bottom plate, the plurality of low-frequency antennas are mounted on the first bottom plate, and the plurality of high-frequency antennas are mounted on the second bottom plate; and the antenna pedestal is arranged in the shell, is arranged on the first bottom plate and is provided with prefabricated holes corresponding to the planar helical antennas, so that the planar helical antennas are accommodated in the corresponding prefabricated holes. The direction finding array is simple in overall structure, can be rapidly installed and used, and can be suitable for wide-frequency-band detection and receiving direction finding equipment in a complex electromagnetic environment.

Description

TECHNICAL FIELD

[0001] The utility model belongs to wireless direction finding technical field relates to a kind of integrated wideband intercepting direction finding array. BACKGROUND

[0002] With the continuous improvement of social informatization degree, information technology is developing rapidly, various electromagnetic signals are increasingly dense, and electromagnetic environment is increasingly complex. In the use scenario of complex electromagnetic environment, it is often necessary to investigate the direction of interference signals or the direction of signals of some special equipment, and to identify the frequency, polarization mode and direction of interference signals or signals of some special equipment.

[0003] Due to the low gain of the omnidirectional antenna, multiple directional antennas are often needed to find the interference signals in the investigation, and the polarization mode of the receiving antenna also needs to be considered when searching for signals in the same frequency band. For signals with unknown polarization mode, if the polarization mode is inconsistent with that of the receiving antenna, the performance of the receiving antenna will be severely affected, directly affecting whether the device can receive the interference signal. Therefore, in order to realize wideband interception, the antenna system is often very complex, and the wiring and assembly are not convenient, affecting the installation efficiency. At the same time, during use in different positions, the antenna is easily damaged during disassembly and assembly of the device antenna, affecting its performance and reducing reliability and stability. In addition, using the traditional direction finding method, the interference signal direction cannot be quickly and effectively found using segmented directional antennas, and the direction finding accuracy cannot be guaranteed, and the use process is also very complex and inconvenient. SUMMARY

[0004] The utility model aims at providing a kind of integrated wideband intercepting direction finding array to improve the stability and convenience of wideband signal direction investigation in complex electromagnetic environment.

[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0006] According to the first aspect of the utility model embodiment, an integrated wideband intercepting direction finding array is provided, which comprises a shell and a plurality of planar spiral antennas installed in the shell. The shell is composed of a first bottom plate and a radome covering the first bottom plate, and a receiving cavity is formed between the two. The plurality of planar spiral antennas are installed on the first bottom plate.

[0007] The plurality of planar spiral antennas include a plurality of low-frequency antennas and a plurality of high-frequency antennas. The second bottom plate is arranged on the first bottom plate. The plurality of low-frequency antennas are installed on the first bottom plate, and the plurality of high-frequency antennas are installed on the second bottom plate.

[0008] It also includes an antenna seat installed in the shell. The antenna seat is arranged on the first bottom plate and has a preformed hole corresponding to each planar spiral antenna, so that each planar spiral antenna is accommodated in the corresponding preformed hole.

[0009] In other examples, the antenna seat is made of wave-absorbing material.

[0010] In other examples, the depth of each preformed hole is approximately the same as the height of the planar spiral antenna accommodated in the preformed hole.

[0011] In other examples, the first bottom plate and the second bottom plate are each provided with an antenna socket, and the low-frequency antenna and the high-frequency antenna are installed in the corresponding antenna socket.

[0012] In other examples, the second bottom plate is a bracket with a predetermined height, and the plurality of high-frequency antennas are installed on the top surface of the bracket so that the high-frequency antennas are at approximately the same height as the top surface of the low-frequency antennas.

[0013] In other examples, the radome includes a bottom edge provided with a mounting hole, and the edge of the first bottom plate is provided with a threaded hole, and the bottom edge of the radome is fixedly connected to the first bottom plate by a screw.

[0014] In other examples, the plurality of low-frequency antennas and the plurality of high-frequency antennas are arranged according to a certain rule, respectively, to adapt to wideband signal detection and direction finding.

[0015] According to a second aspect of the embodiments of the present application, a wideband detection and direction finding device is provided, which comprises the integrated wideband detection and direction finding array and an antenna switch array for switching different antennas.

[0016] The integrated wideband detection and direction finding array provided by the present application has a simple overall structure, can be quickly installed and used, and can be applied to a wideband detection and direction finding device in a complex electromagnetic environment. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Fig. 4 is a decomposition structural schematic view of the integrated wideband detection and direction finding array according to the embodiments of the present application;

[0018] Figure 2 Fig. 5 is a structural schematic view of a planar spiral antenna;

[0019] Figure 3 Fig. 6 is a structural schematic view of an antenna seat according to the embodiments of the present application;

[0020] In the figure, 1 represents a low-frequency antenna; 2 represents an antenna socket; 3 represents a first bottom plate; 4 represents a high-frequency antenna; 5 represents a second bottom plate; 6 represents an antenna seat; 7 represents a preformed hole; 8 represents a fixing screw; and 9 represents a radome. DETAILED DESCRIPTION

[0021] The present application will be described in more detail below with reference to the accompanying drawings.

[0022] Figure 1This is a schematic diagram of the decomposed structure of the integrated broadband detection and direction finding array according to an embodiment of the present invention. Figure 1 As shown, the direction-finding array includes a housing and multiple planar helical antennas mounted within the housing. The housing consists of a first base plate 3 and an radome 9 covering the first base plate 3, forming a receiving cavity between them. The multiple planar helical antennas are mounted on the first base plate 3. As an example, the radome includes a bottom edge with mounting holes, and the edge of the first base plate 3 has threaded holes; the two are fixedly connected by screws.

[0023] In this invention, the radome adopts an integrated structure, which is fixed to the front of the antenna array with screws, which can fully protect the antenna array and make the entire antenna array simple and beautiful.

[0024] Figure 2 This is a schematic diagram of a planar helical antenna. Planar helical antennas are broadband antennas widely used in wireless communication, radar, and radio frequency identification (RFID). Their unique geometric design enables them to maintain good performance over a wide frequency range. The antenna is helical in shape, made of a single conductive material, and arranged in a tightly packed circular or elliptical disk. The antenna is mounted on a dielectric substrate, and different substrates can be selected based on the antenna's performance requirements, such as bandwidth and gain. Furthermore, placing a ground plane on the back of the antenna can improve other performance characteristics, such as directivity. The conductive material typically used is copper or aluminum, which offers excellent conductivity and relatively low cost.

[0025] Planar helical antennas can operate over a wide frequency range and possess circular polarization characteristics, giving them better reception capabilities for electromagnetic waves from different directions. Furthermore, compared to other types of broadband antennas, planar helical antennas are more advantageous in space-constrained applications due to their smaller size.

[0026] The planar helical antennas include multiple low-frequency antennas 1 and multiple high-frequency antennas 4. The operating frequency bands of the multiple high-frequency antennas 4 are higher than the operating frequency bands of the multiple low-frequency antennas 1. Furthermore, it is understood that the operating frequency bands of the multiple low-frequency antennas can be the same or different, preferably different. Similarly, the operating frequency bands of the multiple high-frequency antennas can be the same or different, preferably different.

[0027] The second base plate 5 is mounted on the first base plate 3. Multiple low-frequency antennas 1 are mounted on the first base plate 3, and multiple high-frequency antennas 4 are mounted on the second base plate 5. All the planar helical antennas mounted on the first base plate 3 and the second base plate 5 together form an integrated broadband receiving and direction-finding array.

[0028] Generally, the low frequency antennas 1 are large in size and can be directly installed on the first base plate 3, and the high frequency antennas 4 are small in size and are first fixed on the second base plate 5 and then installed on the first base plate 3. The antenna installation positions are pre-set on the first base plate 3 and the second base plate 5, so that the multiple low frequency antennas 1 and the multiple high frequency antennas 4 are arranged according to the installation positions and a certain rule to adapt to the wideband signal detection and direction finding.

[0029] In one example, the second base plate 5 is a support with a predetermined height, and the multiple high frequency antennas are installed on the top surface of the support so that each high frequency antenna is at substantially the same height as each low frequency antenna.

[0030] In one example, the first base plate 3 and the second base plate 5 are each provided with an antenna socket 2, and the low frequency antennas 1 and the high frequency antennas 4 are installed in the corresponding antenna sockets.

[0031] In the utility model, the planar helical antennas are fixed with the installation base plate (the first base plate 3 and the second base plate 5) through the antenna socket, and the radome is installed on the front of the whole antenna array, so that the whole antenna array is integrally formed, the receiving frequency band is wide, the signal types are many, and the direction finding precision is high.

[0032] Referring to Figure 3 In one example, the utility model further includes an antenna seat 6 installed in the shell, which is arranged on the first base plate 3 and has preformed holes 7 corresponding to each planar helical antenna, so that each planar helical antenna is accommodated in the corresponding preformed hole 7. The depth of each preformed hole 7 is substantially the same as the height of the planar helical antenna accommodated in the preformed hole 7.

[0033] The antenna seat 6 is pre-set with holes according to the high frequency and low frequency antennas, and the antenna installation rule on the first base plate 3 and the second base plate 5 is consistent. The antenna seat 6 is made of wave-absorbing material, mainly to reduce the mutual coupling phenomenon between the antennas.

[0034] In the utility model, the antenna seat is arranged to protect the antennas and also plays a role in fixing the antenna array elements, thereby increasing the stability of the antenna installation. At the same time, the antennas are isolated from the installation base plate (the first base plate 3 and the second base plate 5), thereby reducing the influence of the antenna installation structure on the antenna signal receiving capability.

[0035] The integrated wideband detection and direction finding array provided by the utility model has a simple overall structure, can be quickly installed and used, and can be applied to a wideband detection and direction finding device in a complex electromagnetic environment. As an example, the device further includes an antenna switch array for switching different antennas.

[0036] The above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced by equivalents, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An integrated broadband receiver and direction-finding array, characterized in that, It includes a housing and multiple planar spiral antennas installed inside the housing; the housing consists of a first base plate (3) and an antenna cover (9) covering the first base plate (3), forming a receiving cavity between the two, and multiple planar spiral antennas are installed on the first base plate (3); The multiple planar spiral antennas include multiple low-frequency antennas (1) and multiple high-frequency antennas (4). The second base plate (5) is set on the first base plate (3). The multiple low-frequency antennas (1) are installed on the first base plate (3), and the multiple high-frequency antennas (4) are installed on the second base plate (5). It also includes an antenna mount (6) installed inside the housing, which is disposed on the first base plate (3) and has pre-made holes (7) corresponding to each planar spiral antenna, so that each planar spiral antenna is accommodated in the corresponding pre-made hole (7).

2. The integrated broadband receiver and direction finder array according to claim 1, characterized in that, The antenna mount (6) is made of absorbing material.

3. The integrated broadband receiver and direction finder array according to claim 1, characterized in that, The depth of each pre-drilled hole (7) is approximately the same as the height of the planar helical antenna contained in the pre-drilled hole (7).

4. The integrated broadband receiver and direction finder array according to claim 1, characterized in that, Antenna sockets (2) are provided on both the first base plate (3) and the second base plate (5), and low-frequency antenna (1) and high-frequency antenna (4) are installed in the corresponding antenna sockets (2).

5. The integrated broadband receiver and direction finder array according to claim 1 or 4, characterized in that, The second base plate (5) is a support with a predetermined height. Multiple high-frequency antennas (4) are installed on the top surface of the support, so that the top surfaces of each high-frequency antenna (4) and each low-frequency antenna (1) are at approximately the same height.

6. The integrated broadband receiver and direction finder array according to claim 1, characterized in that, The radome includes a bottom edge with mounting holes, and the edge of the first base plate (3) has threaded holes. The bottom edge of the radome is fixedly connected to the first base plate (3) by screws.

7. The integrated broadband receiver and direction finder array according to claim 1, characterized in that, Multiple low-frequency antennas (1) and multiple high-frequency antennas (4) are arranged according to a certain pattern to be suitable for wideband signal reception and direction finding.

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