Divided sub-array feed VICTS satellite communication antenna

Abstract

The invention proposes a divided sub-array feed VICTS satellite communication antenna, and aims to provide a low-profile high-gain satellite communication antenna with a wide beam scanning angle and a strong radiation capability. The invention is achieved by the following technical scheme: air long slots equally spaced along a radial direction according to a linear array string are made in the surface of an upper metal rotary table, the bottom of a separator of each air long slot is provided with an air gap blind slot for impedance matching, waveguide cavities arranged symmetrically to the diameter axis are made on the lower bottom of the lower metal circular disc, which corresponds to the upper metal rotary table, each waveguide cavity serves as a feed network for an antenna sub-array through a feed line source of the inner wall thereof, a quasi-TEM wave traveling from the left to the right with an approximately equal amplitude and the same phase at a feed end is generated from the left end of each cavity, the quasi-TEM wave electric field flows into each air long slot from each of the waveguide cavities, and the upper metal rotary table uses each air long slot as a radiation sub-array unit, combines the radiation unit sub-arrays into a large array for radiating an antenna into a natural space, and radiates the antenna into the natural space.

Description

technical field [0001] The invention relates to a VICTS (VariableInclination Continuous Transverse Stub Arrays) variable inclination continuous section segment array array antenna, in particular to a low-profile, low-cost, high-performance sub-array feeding VICTS satellite communication antenna. Background technique [0002] Satellite communication systems require antennas with characteristics such as low profile, high gain, wide frequency band, and high scanning angle. Nowadays, in many satellite communication antennas, such as parabolic antennas, phased array antennas, etc., there are some deficiencies. The parabolic antenna has the best beam scanning performance, stable gain, and high scanning angle, but it has the largest volume, high requirements on the servo turntable, and slow scanning rate (millisecond level). The largest of the antennas. [0003] As the popularity of phased array antennas gradually increases, their applications in the field of satellite communicat...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the defect that the prior art VICTS antenna adopts a single feeding cavity structure, and the area of ​​the feeding cavity is small, resulting in a low antenna aperture efficiency of only 50%, to provide a simple structure, easy processing, high antenna efficiency Higher Split Subarray Feed VICTS Satellite Antenna

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