Frequency scanning array antenna based on quasi-surface plasmon waveguide

Abstract

The invention discloses a frequency scanning array antenna based on a quasi-surface plasmon waveguide. The frequency scanning array antenna based on the quasi-surface plasmon waveguide is characterized in that an array element is coupled and excited through the quasi-surface plasmon waveguide and the range and the phase, which need exciting, of the array element are acquired through the adjustment of the position of the array element to achieve required radiation characteristics. A plurality of advantages are centralized on the array antenna with the quasi-surface plasmon waveguide as a feed network, the efficiency of the feed network is high, the antenna is simple in structure, frequency scanning can be achieved and various polarization characteristics can be achieved through changing of the form of the array element. A plurality of embodiments are given and a specific example simulation result is finally given. Other specific embodiments can be formed based on the same idea after the structure of the quasi-surface plasmon waveguide is reasonably changed and different array element forms are adopted. The frequency scanning array antenna based on the quasi-surface plasmon waveguide can be used for wireless communication and radar systems.

Description

technical field [0001] The invention belongs to the field of wireless communication technology and radar technology, and in particular relates to a frequency scanning array antenna based on a quasi-surface plasmon waveguide, which can be used in communication systems such as microwave, millimeter wave, and terahertz. Background technique [0002] As a key component of communication and radar systems, antenna arrays provide the possibility for high-efficiency radiation and reception of electromagnetic waves, that is, the conversion of electromagnetic signals from guided wave mode to radiation mode in free space, or vice versa. Due to the need for beam scanning, early antenna arrays were scanned mechanically, but the speed of beam scanning was very slow. At the same time, once the antenna array design was completed, the array beam was fixed and could not be flexibly controlled. The phased array antenna uses the independent control of the excitation phase and amplitude of each ...

AI Technical Summary

Problems solved by technology

In the millimeter wave and higher frequency bands, the feed network of the microstrip line has a large radiation and loss, and the feed network of the left and right hand transmission lines is rarely used due to its complex structure and difficult implementation.

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