A waterproof waveguide slot antenna

Abstract

A waterproof waveguide slot antenna, including antenna top plate, antenna slot end middle layer and antenna bottom plate installed from top to bottom; The antenna top plate is provided with an antenna hole, and the first waterproof groove is arranged around the antenna hole at the lower end of the antenna top plate, the first waterproof gasket is installed in the first waterproof groove, and the first waterproof gasket is pasted with the first wave-transparent film below; The antenna bottom plate is provided with a waveguide hole, and the second waterproof groove is arranged around the waveguide hole below the antenna bottom plate, the second waterproof gasket is installed in the second waterproof groove, and the second waterproof gasket is pasted with the second wave-transparent film below; The utility model discloses a layered laminated structure design to metal slot antenna, and adopts wave-transparent material and waterproof structure to waterproof and seal at the input waveguide port and slot output end of the antenna, so that the antenna product has a certain waterproof capacity under the condition of no antenna cover, and can be applicable to the open-air environment with less rainfall.

Description

Technical Field

[0001] This utility model belongs to the field of radar technology, and relates to waveguide antennas, specifically a waterproof waveguide slot antenna. Background Technology

[0002] As the device used in a transceiver system to receive and transmit signals, the antenna's ability to maintain its performance under various conditions is directly important to the higher-level system; most antennas are typically protected by an radome. For antennas without radome protection and with a metal slotted structure, moisture can enter the slots in the presence of water, causing the antenna's performance to degrade. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, this utility model discloses a waterproof waveguide slot antenna.

[0004] The waterproof waveguide slot antenna of this utility model includes an antenna top plate, an antenna slot end middle layer, and an antenna bottom plate stacked from top to bottom; The antenna top plate has an antenna hole, and a first waterproof groove is provided around the antenna hole at the lower end of the antenna top plate. A first waterproof gasket is installed in the first waterproof groove, and a first wave-transparent membrane is pasted below the first waterproof gasket. A waveguide hole is provided on the antenna base plate, and a second waterproof groove is provided around the waveguide hole below the bottom of the antenna base plate. A second waterproof gasket is installed in the second waterproof groove, and a second wave-transparent membrane is pasted below the second waterproof gasket.

[0005] Preferably, the first and second wave-transparent membranes are made of polytetrafluoroethylene.

[0006] Preferably, the antenna top plate, the intermediate layer at the antenna slot end, and the antenna bottom plate all have screw holes with matching positions and dimensions, and the three are fixed together by bolts.

[0007] Preferably, a strip-shaped groove is provided below the middle layer of the antenna slot end, and multiple electromagnetic wave through holes are opened in the strip-shaped groove.

[0008] The waterproof waveguide slot antenna described in this utility model has a layered structure design for the metal slot antenna. The input waveguide port and the slot output end of the antenna are waterproofed and sealed with wave-transparent materials and waterproof structures. Without the antenna cover, the antenna product has a certain waterproof capability and can be used in open-air environments with low rainfall. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of a specific embodiment of the antenna top plate of this utility model; Figure 2This is a schematic diagram of a specific embodiment of the first waterproof gasket of this utility model; Figure 3 This is a schematic diagram of a specific embodiment of the intermediate layer at the antenna slot end of this utility model; Figure 4 This is a schematic diagram of a specific embodiment of the antenna base plate described in this utility model; Figure 5 This is a schematic diagram of a specific embodiment of the second waterproof gasket of this utility model; The figures are labeled as follows: 1-antenna hole, 2-first waterproof groove, 3-screw hole, 4-strip groove, 5-electromagnetic wave through hole, 6-waveguide hole, 7-second waterproof groove. Detailed Implementation

[0010] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0011] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the waterproof waveguide slot antenna of this utility model includes an antenna top plate, an antenna slot end intermediate layer, and an antenna bottom plate stacked from top to bottom. An antenna hole 1 is formed on the antenna top plate, and a first waterproof groove 2 is provided around the antenna hole at the lower end of the antenna top plate. A first waterproof gasket is installed in the first waterproof groove, and a first wave-transparent membrane is adhered below the first waterproof gasket. A waveguide hole 6 is formed on the antenna bottom plate, and a second waterproof groove 7 is provided around the waveguide hole 6 at the lower end of the bottom plate. A second waterproof gasket is installed in the second waterproof groove, and a second wave-transparent membrane is adhered below the second waterproof gasket.

[0012] The antenna top plate, the intermediate layer at the antenna slot end, and the antenna bottom plate are all made of metal. Figures 1 to 5 In the specific embodiment shown, the antenna top plate, the intermediate layer at the antenna slot end, and the antenna bottom plate all have screw holes 3 with mutually matching positions and dimensions, and the three are fixed together by bolts. At the same time, the antenna top plate and the intermediate layer at the antenna slot end clamp and fix the first waterproof gasket and the first wave-transparent membrane between the antenna top plate and the intermediate layer at the antenna slot end.

[0013] A waterproof gasket, typically made of rubber, is installed inside the waterproof groove, surrounding the antenna hole and waveguide hole to effectively prevent moisture ingress. The first and second wave-transparent membranes are preferably made of polytetrafluoroethylene (PTFE), which provides ideal transmission for W-band electromagnetic waves, achieving a seal while allowing near-lossless electromagnetic wave transmission. The wave-transparent membrane can be glued to the waterproof gasket. The antenna base plate is fixed to the support surface of other equipment according to the specific antenna installation device, thus clamping and securing the second waterproof gasket and the second wave-transparent membrane.

[0014] The waveguide holes on the antenna base plate are used to connect to external waveguides. Electromagnetic waves emitted from the waveguides enter the intermediate layer at the antenna slot end, such as... Figure 3 The antenna slot end has a strip groove 4 below the middle layer. The strip groove has multiple densely packed electromagnetic wave through holes 5. The cavity formed by the strip groove and the antenna base plate below serves as an electromagnetic wave modulation cavity. After the electromagnetic wave is modulated, it is emitted through the slot output end of the antenna top plate, i.e., the antenna hole. The upper and lower ends of the electromagnetic wave modulation cavity are sealed and surrounded by the first and second wave-transparent films, respectively, which are waterproof and do not hinder the emission of electromagnetic waves.

[0015] The waterproof waveguide slot antenna described in this utility model has a layered structure design for the metal slot antenna. The input waveguide port and the slot output end of the antenna are waterproofed and sealed with wave-transparent materials and waterproof structures. Without the antenna cover, the antenna product has a certain waterproof capability and can be used in open-air environments with low rainfall.

[0016] The foregoing descriptions are preferred embodiments of this utility model. Unless there is a clear contradiction between the preferred embodiments or a prerequisite for a particular preferred embodiment, the preferred embodiments can be arbitrarily combined and used. The embodiments and specific parameters described are only for clearly illustrating the utility model verification process of the inventor and are not intended to limit the patent protection scope of this utility model. The patent protection scope of this utility model is still subject to its claims. Similarly, any equivalent structural changes made based on the description and drawings of this utility model should also be included within the protection scope of this utility model.

Claims

1. A waterproof waveguide slot antenna, characterized in that, This includes the antenna top plate, the antenna slot end intermediate layer, and the antenna bottom plate, which are stacked from top to bottom; The antenna top plate has an antenna hole, and a first waterproof groove is provided around the antenna hole at the lower end of the antenna top plate. A first waterproof gasket is installed in the first waterproof groove, and a first wave-transparent membrane is pasted below the first waterproof gasket. A waveguide hole is provided on the antenna base plate, and a second waterproof groove is provided around the waveguide hole below the antenna base plate. A second waterproof gasket is installed in the second waterproof groove, and a second wave-transparent membrane is pasted below the second waterproof gasket.

2. The waterproof waveguide slot antenna as described in claim 1, characterized in that, The first and second wave-transparent membranes are made of polytetrafluoroethylene.

3. The waterproof waveguide slot antenna as described in claim 1, characterized in that, The antenna top plate, the intermediate layer at the antenna slot end, and the antenna bottom plate all have screw holes with matching positions and dimensions, and the three are fixed together by bolts.

4. The waterproof waveguide slot antenna as described in claim 1, characterized in that, A strip-shaped groove is provided below the middle layer of the antenna slot end, and multiple electromagnetic wave through holes are opened in the strip-shaped groove.

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