A Microwave and Millimeter Wave Compact Phased Array Antenna System

Abstract

Disclosed is a microwave / millimeter wave compact phased-array antenna system, comprising a radiation plate (1), a transition plate (2) and a phase-shifting plate (3), wherein the radiation plate (1) is provided with a signal transmitting apparatus (4); the phase-shifting plate (3) is provided with multiple antenna coupling units (5) for adjusting the phase of a signal transmitted by the signal transmitting apparatus (4); the transition plate (2) is provided with a phase-shifting waveguide interface (6) connected to the antenna coupling units (5) of the phase-shifting plate (3) and a radiation waveguide interface (7) connected to the signal transmitting apparatus (4); and the radiation waveguide interface (7) is connected to the phase-shifting waveguide interface (6) in a matched manner. According to the present invention, by means of changing the phase of the electromagnetic wave coupled to each array element antenna, the beam direction of the array antenna is changed, and the beam pointing angle can thus be transformed while achieving a higher antenna gain so as to realize fast scanning.

Description

Technical field [0001] The invention belongs to the field of antenna technology, and in particular relates to a microwave and millimeter wave compact phased array antenna system. Background technique [0002] Because the beam scanning is fast and flexible, and the phased array is widely used, the new demand for high-gain flat-panel phased array antennas in radar systems is mainly low-cost and easy to mass produce. Some methods proposed by the industry include the use of liquid crystal materials, movable dielectric blocks, and ferroelectric materials. The disadvantage of these methods is that high frequencies (such as the V band) will bring greater dielectric loss and radiation loss. When the wave is continuously scanned, the gain fluctuates greatly, and the structure is complicated and the cost is high. Summary of the invention [0003] The purpose of the present invention is to provide a waveguide microwave millimeter wave compact phased array antenna system that uses mechanical...

AI Technical Summary

Problems solved by technology

Some methods proposed by the industry include the use of liquid crystal materials, movable dielectric blocks, and ferroelectric materials. The disadvantage of these methods is that they will bring large dielectric loss and radiation loss at high frequencies (such as V-band).

When the wave scans continuously, the gain fluctuates greatly, and the structure is complex and the cost is high

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