Panel slot array antenna

Abstract

The utility model discloses a flat plate slot array antenna, and relates to the technical field of scatter communication, in particular to a flat plate slot array antenna, which comprises an antenna back plate, and the antenna back plate is provided with a flat plate slot antenna and is used for scatter communication in use. The antenna backboard is provided with a one-to-six power division network and is used for power distribution and port excitation, and the flat slot antenna comprises a flat feed network layer which is formed by splicing six first layer bodies and is installed on the antenna backboard; the radiation slot layer comprises a second layer body arranged on the first layer body, a plurality of radiation slots are uniformly arranged and dug on the second layer body at intervals, and a metal ridge is arranged between two adjacent rows of radiation slots on the second layer body and is used for improving the radiation efficiency of an antenna aperture. And due to the limitation of the processing capability, the requirements of high gain and low side lobe required by scatter communication cannot be met on a single flat plate.

Description

TECHNICAL FIELD

[0001] The utility model relates to scattering communication technical field, concretely is a kind of flat panel slot array antenna. BACKGROUND

[0002] Scattering communication is a kind of over-the-horizon communication means, it utilizes the scattering effect of air medium to electromagnetic wave, carries out communication between two places.Currently, scattering communication antenna mainly has reflector antenna and flat panel array antenna, flat panel waveguide slot array antenna as a kind of high-gain low sidelobe array antenna, with low profile, high gain, low sidelobe etc.

[0003] According to the check disclosure (announcement) No.: CN204966703U, a kind of mechanical center feed's ridge waveguide flat panel array antenna is disclosed, this technology discloses "a kind of mechanical center feed's ridge waveguide flat panel array antenna, the ridge waveguide flat panel array antenna includes grid layer, radiating layer, coupling layer, feed network layer, center feed layer in turn overlap setting;The center feed layer mechanically center is provided with the feed port for signal input and output perpendicular to antenna array surface;The feed network layer is composed of single ridge waveguide, the narrow center of each branch of ridge waveguide power divider on the feed network layer is provided with ridge" and other technical schemes, with "by introducing grid layer, center feed layer, using the design of ridge waveguide power division network, successfully combined with other structure layer, reach the purpose of realizing the improvement of antenna directivity figure non-circularity, the improvement of antenna standing wave bandwidth, realization of antenna mechanical center feed" and other technical effects;

[0004] However, the existing flat panel array is also mostly single flat panel, due to the limitation of processing capacity, cannot satisfy the high gain, low sidelobe requirement of scattering communication on single flat panel;There are multiple subarray assembled flat panel array antennas on the market, mainly horn array, although its volume and weight are improved compared with reflector antenna, but still cannot meet the demand of low envelope size and light weight on the market. UTILITY MODEL CONTENT

[0005] In view of the deficiencies of prior art, the utility model provides a kind of flat panel slot array antenna, with reduce antenna profile height, antenna weight, while, improve antenna gain, antenna efficiency, improve the operability in the process of product use, improve the product quality and performance characteristics.

[0006] To achieve the above object, the utility model is realized by the following technical scheme: a kind of flat panel slot array antenna, including antenna backboard, antenna backboard is provided with flat panel slot antenna and is used for scattering communication when using, antenna backboard is provided with one six power division network and is used for power distribution and port excitation, flat panel slot antenna includes:

[0007] The flat feed network layer comprises a first layer body spliced by blocks and installed on the antenna back plate, and a waveguide channel is arranged on the surface of the first layer body;

[0008] The radiation slot layer comprises a second layer body arranged on the first layer body, a plurality of radiation slots are uniformly and interval arranged on the second layer body, and a metal ridge is arranged between two adjacent columns of the radiation slots on the second layer body and used for improving the radiation efficiency of the antenna aperture.

[0009] Preferably, the flat plate slot antenna further comprises a cavity layer arranged between the flat feed network layer and the radiation slot layer.

[0010] Preferably, the antenna back plate is provided with an antenna cover installed through bolts and used for protecting the flat plate slot antenna.

[0011] Preferably, the antenna cover is made of a non-metallic composite material.

[0012] Preferably, the antenna back plate is made of a non-metallic composite material with certain rigidity.

[0013] Preferably, the one-to-six power division network is divided into a one-to-two equal power division network and a one-to-two unequal power division network, and is used for combining the flat waveguide network layer and the one-to-six power division network, power distribution and port excitation, so that the power division ratio reaches the effect of reducing the sidelobe level.

[0014] Preferably, the one-to-six power division network is made of high-strength aluminum alloy material.

[0015] Beneficial effects

[0016] The utility model provides a kind of flat plate slot array antenna.Compared with prior art, it has the following beneficial effects:

[0017] (1) by flat plate slot subarray antenna unit in the flat waveguide feed network layer and radiation slot layer integrated design, reduce the loss increase, volume increase and weight increase caused by interface connection, avoid the error caused by multiple processing parts and multiple connections, reach the advantages of low loss, small volume, light weight and low manufacturing cost.

[0018] (2) by adjusting the spacing between antenna cover and flat plate slot subarray antenna, simultaneously combining flat plate slot subarray antenna and one-to-six power division network, power distribution and port excitation, so that the power division ratio reaches the effect of reducing the sidelobe level, and then reaches high efficiency, high gain, low sidelobe, improves the overall performance of antenna. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0020] Figure 2It is the structure schematic view of the inside of the flat plate slot subarray antenna in the utility model;

[0021] Figure 3 It is the structure schematic view of the layering of the flat plate slot subarray antenna in the utility model;

[0022] Figure 4 It is the structure schematic view of the one-to-six power division network in the utility model;

[0023] In the drawing: 1, antenna back plate; 2, antenna cover; 3, flat plate slot antenna; 31, flat feed network layer; 311, first layer body; 312, waveguide channel; 32, cavity layer; 33, radiation slot layer; 331, second layer body; 332, radiation slot; 333, metal ridge; 4, one-to-six power division network. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0025] Please refer to Figures 1-4 The utility model provides a kind of flat plate slot array antenna technical scheme: 1.A kind of flat plate slot array antenna, including antenna back plate 1, antenna back plate 1 is provided with flat plate slot antenna 3 and is used to scatter communication when using, antenna back plate 1 is provided with one-to-six power division network 4 and is used for power distribution and port excitation, flat plate slot antenna 3 includes:

[0026] Flat feed network layer 31, including by 6 first layer body 311 splicing and installing on antenna back plate 1, first layer body 311 is provided with waveguide channel 312 on surface;

[0027] Radiation slot layer 33, including the second layer body 331 on first layer body 311, the second layer body 331 is evenly spaced and arranged and is excavated with several radiation slots 332, the second layer body 331 is provided with metal ridge 333 between adjacent two columns of radiation slots 332 and is used to improve the radiation efficiency of antenna port surface, flat plate slot antenna 3 also includes cavity layer 32 between flat feed network layer 31 and radiation slot layer 33;

[0028] In the embodiment, the antenna radiation unit is formed by adopting the form of waveguide slot array, effectively reduces the link loss of antenna, improves antenna efficiency and increases antenna gain.

[0029] Specifically, the antenna backboard 1 is provided with the radome 2 and is used for protecting the flat plate slot antenna 3, and is made of non-metallic composite material;

[0030] In the embodiment, the radome 2 is made of non-metallic composite material such as glass fiber and paper honeycomb composite material.

[0031] Specifically, the one-to-six power division network 4 is divided into a one-to-two equal power division network and a one-to-two unequal power division network, and is used for combining the flat waveguide network layer with the one-to-six power division network 4, performing power distribution and port excitation, and achieving the effect of reducing the sidelobe level by a specific power division ratio.

[0032] In the embodiment, the one-to-six power division network 4 is made of high-strength aluminum alloy material, which can guarantee the strength and rigidity requirements while reducing the volume and weight.

[0033] The working principle and use process of the utility model are as follows: in use, the metal ridge 333 is arranged on the second layer body 331 between the adjacent two columns of radiation slots 332 to improve the radiation efficiency of the antenna aperture, and make the antenna aperture electric field distribution more uniform, the waveguide slot array form is adopted to form the antenna radiation unit, the link loss of the antenna is effectively reduced, the antenna efficiency is improved, and the antenna gain is improved; the flat waveguide network layer is combined with the one-to-six power division network 4 to perform power distribution and port excitation, so that the specific power division ratio achieves the effect of reducing the sidelobe level.

[0034] It should be noted that in this document, the terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0035] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A flat panel slot array antenna comprising an antenna backplane (1), characterized in that: The antenna backboard (1) is provided with a flat plate slot antenna (3) and is used for scattering communication in use, and the antenna backboard (1) is provided with a one-to-six power division network (4) and is used for power distribution and port excitation, and the flat plate slot antenna (3) comprises: A flat feed network layer (31) is composed of six first layer bodies (311) and is installed on the antenna backboard (1), and the first layer body (311) is provided with a waveguide channel (312) on the surface thereof; A radiation slot layer (33) comprises a second layer body (331) provided on the first layer body (311), and the second layer body (331) is uniformly and spacedly provided with a plurality of radiation slots (332), and the second layer body (331) is provided with a metal ridge (333) between two adjacent rows of the radiation slots (332) and is used for improving the radiation efficiency of the antenna port surface.

2. A planar array antenna according to claim 1, characterized in that: The flat plate slot antenna (3) further comprises a cavity layer (32) provided between the flat feed network layer (31) and the radiation slot layer (33).

3. A planar array antenna according to claim 1, characterized in that: The antenna backboard (1) is provided with a radome (2) and is used for protecting the flat plate slot antenna (3).

4. A planar array antenna according to claim 3, wherein: The radome (2) is made of a non-metallic composite material.

5. A planar array antenna according to claim 1, wherein: The antenna backboard (1) is made of a non-metallic composite material with a certain rigidity.

6. A planar array antenna according to claim 1, wherein: The one-to-six power division network (4) is divided into a one-to-two equal power division network and a one-to-two unequal power division network, and is used for combining the flat waveguide network layer with the one-to-six power division network (4) to perform power distribution and port excitation, so that a specific power division ratio is reduced to reduce the sidelobe level.

7. A planar array antenna according to claim 1, wherein: The one-to-six power division network (4) is made of a high-strength aluminum alloy material.

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