A frequency scanning CTS flat panel array antenna

Abstract

The invention discloses a frequency scanning CTS flat panel array antenna, includes a radiation layer and a broadband line source layer arranged in order from top to bottom, the radiation layer includes a first radiation element and a second radiation element, a first radiating element is located above the second radiating element, the first radiation unit includes a first metal plate and 17 continuous transverse branches disposed on the first metal plate, the first metal plate is a rectangular plate, 17 consecutive transverse branch are uniformly spaced from left to right on that first metalplate. The second radiating unit comprises a second metal plate on which a non-uniform slow wave structure, a sixth rectangular waveguide cavity and a seventh rectangular waveguide cavity are sequentially arranged from left to right, and a broadband line source layer comprises a third metal plate, a single ridge waveguide feeding network and a single ridge waveguide. The second radiating unit comprises a second metal plate, wherein the second metal plate is provided with a non-uniform slow wave structure, a sixth rectangular waveguide cavity and a seventh rectangular waveguide cavity from leftto right Rectangular waveguide converter and quasi-TEM mode line source generator. The invention has the advantages of small size, high gain and high efficiency.

Description

technical field [0001] The invention relates to a flat panel array antenna, in particular to a frequency scanning CTS flat panel array antenna. Background technique [0002] In recent years, millimeter-wave (MMW) antenna arrays with beam-steering capabilities are of great value and have been widely used in the fields of radar, imaging, and high-speed communication. At present, there are mainly three types of antennas used to realize high-performance antenna arrays with high beam pointing accuracy: mechanical scanning antennas, phase scanning antennas, and frequency scanning antennas. [0003] Among them, the mechanical scanning antenna realizes the beam scanning of the antenna through a mechanical scanning method, which has a slow scanning speed and has reliability problems; the phase scanning antenna uses a phase shifter to control the feeding phase of each antenna unit. Realize the beam scanning of the antenna; the frequency scanning antenna is to change the phase relatio...

AI Technical Summary

Problems solved by technology

Although the SIW structure of the low-profile frequency-scanning CTS panel array antenna can reduce the thickness of the overall structure, as the array increases, the loss will increase, making it impossible to achieve high-gain antenna design, and although the parabolic reflector line source has a wide frequency band characteristics, can generate TEM mode waves, but the structure size of the reflective surface is large and the efficiency is low

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