Split ring metamaterial unit-based dual-frequency circularly polarized plane reflective array antenna

Abstract

The invention discloses a split ring metamaterial unit-based dual-frequency circularly polarized plane reflective array antenna. The antenna is provided with a dual-frequency composite plane reflective array and a circularly polarized horn feeding source arranged below the dual-frequency composite plane reflective array, wherein the reflective array comprises grounding metal, an interlayer dielectric substrate, and a metal split ring array plane which is formed by low-frequency and high-frequency split ring units in alternate arrangement and has a center winding two-dimensional array structure; the array plane adopts a multi-partition sub-array parallel structure; and the feeding source comprises a rectangular waveguide, a rectangular waveguide transitional section, a circular waveguide with angle of chamfer, a circular waveguide transitional section, and a circular opening waveguide, wherein the opening of the circular opening waveguide is changed from narrow to wide. The working bandwidth of the reflective array can be improved based on the multi-resonant characteristic of the split ring metamaterial units; by virtue of the multi-partition sub-array parallel design method, the modeling speed and efficiency of the array plane can be effectively improved; and partition processing and shaping of the large-scale plane array can be facilitated.

Description

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AI Technical Summary

Benefits of technology

This patented technology allows for better performance at Ku band satellites compared to previous designs that used separate components or had different responses. It uses two types of radios called split ring metaspheric units (SRMUs) instead of single element reflectors, resulting in smaller dimensions and lighter weight than existing systems while maintaining their ability to transmit signals over long distances without losing signal quality due to rain fade caused by atmospheric conditions such as temperature changes. Additionally, it achieves this through use of double frequency resonant split-rings made up of radiation elements arranged alternately within each other rather than just one type perpendicular to them. These techniques help reduce manufacturing costs and make the overall structure more efficient.

Problems solved by technology

Technological Problem: Current Planar Reflection Array (PR) Antennas have limitations such as wide frequency range, requiring wider band responses, complex fabrication process, poor performance, and challenges in achieving both compact dimensions and efficient operation modes simultaneously without compromising their desired functions.

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