Metamaterial clad dual-frequency phased array antenna

Abstract

The invention discloses a metamaterial cladding dual-frequency phased array antenna, comprising a cladding structure and an antenna array, the cladding structure is composed of M×N rectangular mushroom-shaped claddings arranged periodically, and the antenna array is coupled by periodically arranged slots The antenna is composed of the same number of slot-coupling antennas as the number of rectangular mushroom-shaped claddings, and each slot-coupling antenna is located vertically below each rectangular mushroom-shaped cladding. The invention solves the problem that the traditional phased array antenna cannot achieve high gain and large-angle scanning in two frequency bands at the same time, and the antenna can realize multi-frequency band operation and low-frequency to high-frequency scanning compensation, so that the scanning angle is greatly improved. There is almost no scanning blind area in the array direction, which is suitable for multi-functional antenna systems.

Description

technical field [0001] The invention belongs to the field of communication technology, and further relates to a metamaterial-coated dual-frequency phased array antenna in the field of electromagnetic field and microwave technology. The invention can be used in microwave bands, the antenna can realize multi-band work, low-frequency to high-frequency scanning compensation, the scanning angle is greatly improved, there is almost no scanning blind area in the array arrangement direction, and it is suitable for a multi-functional antenna system. Background technique [0002] Multi-band phased array antennas are more and more used in the field of communication due to their advantages of high gain and good scanning characteristics. With the advancement of scientific and technological innovation, modern wireless communication technology has developed rapidly, wireless communication systems are constantly updated and expanded, and their demand for channel capacity is increasing. It i...

AI Technical Summary

Problems solved by technology

However, the disadvantage of this antenna structure is that it cannot achieve high radiation efficiency in the two frequency bands at the same time, and mechanical operations are required to enable the antenna to work in the two frequency bands

However, the shortcomings of this antenna structure are that it cannot realize large-angle scanning of the antenna while having a high antenna gain, and the beam scanning does not have continuity.

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