Electric scanning high-gain quasi-conical beam FP antenna based on multi-beam switching
A multi-beam, high-gain technology, applied in the field of antennas, can solve problems such as complex processing, high cost, and narrow coverage, and achieve high application value
Pending Publication Date: 2022-05-06
NANJING UNIV OF SCI & TECH
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Problems solved by technology
Most of them adopt multi-layer production and center feeding, such as patent No. 201911180248.X passive frequency scanning Fabry-Perot resonant cavity antenna and patent No. 202010936385.8 a FP resonant cavity antenna based on a metasurface. Such a multi-layer structure is manufactured The processing is more complicated and the cost is high. Secondly, the center patch feeds can only generate a vertical high-gain beam, and the coverage is very narrow.
Method used
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Embodiment
[0055] see figure 1 , the electronically scanned high-gain quasi-cone beam FP antenna based on multi-beam switching according to an embodiment of the present invention includes an FP cavity (1) and 10 feed sources (2);
[0056] The 10 feed sources (2) are evenly arranged around the FP cavity (1), and the mounting bracket (25) fixes the feed sources (2) on the first dielectric substrate (11) and the first dielectric substrate (11) through the nylon column (14). between metal floors (15);
[0057] Exemplarily, the FP cavity (1) includes a first dielectric substrate (11), a first metal printed circuit (12) and a first metal floor (15). The first metal printed circuit (12) is printed on the side of the first dielectric substrate (11) facing the first metal floor (15), forming a gap between the first metal printed circuit (12) and the first metal floor (15) The air cavity (13), the first dielectric substrate (11) and the first metal floor (15) are fixed by nylon posts (14); in th...
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Abstract
The invention discloses an electric scanning high-gain quasi-cone-shaped beam Fabry-Perot (FP) antenna based on multi-beam switching, and relates to an electric scanning high-gain quasi-cone-shaped beam Fabry-Perot (FP) antenna based on multi-beam switching. The antenna comprises an FP (Fabry-Perot) cavity, m ultra-wideband feed sources and an electric control switch, the FP cavity is composed of a dielectric substrate, a printed circuit, an air cavity, a nylon column and a metal floor. The ultra-wideband feed sources are uniformly distributed around the air cavity and feed towards the center of the FP cavity; the ultra-wideband feed source is a multi-sine ripple enantiomeric Fermi conical slot antenna and comprises a dielectric substrate, printed circuits on the upper surface and the lower surface of the dielectric substrate, an SMA connector and a mounting bracket. The adjacent wave beams generated by the antenna form 3dB intersection, and quasi-cone wave beams can be formed by periodically feeding m feed sources through a single-pole m-throw switch. The antenna is low in profile, light in weight, wide in frequency band, high in gain, simple and compact in structure and convenient to realize, and a circumferential wave beam covering function and a pitching surface wave beam frequency sweeping function of a conical wave beam can be realized.
Description
technical field [0001] The invention belongs to the technical field of antennas, in particular to an electronically scanned high-gain quasi-cone beam Fabry-Perot (FP) antenna based on multi-beam switching. Background technique [0002] The main radiation direction of the cone-beam antenna is on a cone in space. It has higher gain than the omni-directional antenna of the same size, and has a wider coverage than the pencil-beam antenna, so it has been widely studied by researchers. Especially for the antenna installed on the vehicle, the cone beam antenna can ensure that the vehicle can receive signals from satellites or base stations well whether it is moving forward or turning. Although the cone-beam antenna has a wide circumferential coverage, its gain performance is significantly lower than that of a pencil-beam antenna of the same electrical size. For example, for an antenna with the same electrical dimension of 4.5 wavelength radii, when the beam pointing angle is 50°, ...
Claims
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IPC IPC(8): H01Q1/50H01Q1/38H01Q3/34H01Q1/24H01Q1/32
CPCH01Q1/50H01Q1/38H01Q3/34H01Q1/24H01Q1/32
Inventor 齐世山杨俊翔吴文方大纲
Owner NANJING UNIV OF SCI & TECH