All Metal Focused Transmitarray Antenna for Microwave Measurements

Abstract

A focused transmitarray antenna adopting double double scoop-shaped elements is presented. The transmitarray is composed of four square phase shift layers and three metal waveguide layers stacked on each other. Folded interdigital structure, which not only greatly reduces the periodic size of the element, but also improves the oblique incidence stability of the element. It can be seen from the results that the spatial resolution of the proposed antenna at the center frequency is about 1.0 λ0. The antenna has good focused performance and is suitable for various microwave measurement devices.