[IEEE Transactions on Antennas and Propagation]Analysis of the Transmission Performance Limits for a Multilayer Transmitarray Unit Cell

发布者:苏绍杰发布时间:2022-11-04浏览次数:226

Authors:

Zhishu Qu; James R.Kelly; Yue Gao

Published in: 

IEEE Transactions on Antennas and Propagation ( Volume: 70Issue: 3, March 2022)

Abstract:

This communication presents a theoretical study that establishes the performance limits for a multilayer transmitarray unit cell. This is the first study to be applicable to unit cells in which the conducting resonators, on the different layers, are shaped differently. A theoretical calculation is derived at the beginning. The theoretical calculations predict that, for an S 21 amplitude of −1 dB, unit cells having two and three conducting layers provide a phase shifting range of 170° and 360°, respectively. In addition, for a given phase shifting range of S 21 , a new methodology for analyzing the maximum S 21 amplitude, based on different substrates, is proposed. For the first time, we prove that it is efficient to attain the maximum S 21 amplitudes by employing a smaller substrate permittivity or a quarter-of-wavelength substrate electrical thickness. Finally, the theoretical calculations have been validated through computer simulation.

site: https://ieeexplore.ieee.org/abstract/document/9539051