Open AccessMetal‐only ultra‐wideband reflectarray
Author(s) -
Ren JiaWei,
Wang HongJian
Publication year - 2022
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/ell2.12439
Subject(s) - wideband , bandwidth (computing) , offset (computer science) , materials science , radiation , optics , ultra wideband , dielectric , optoelectronics , electronic engineering , computer science , telecommunications , engineering , physics , programming language
A metal‐only ultra‐wideband polarisation‐selective reflectarray element using the true time delay is proposed herein. The element affords a large bandwidth with a tuneable reflection phase. An offset‐fed reflectarray prototype using the proposed element was designed, and it exhibited stable radiation patterns from 4 to 35 GHz (over 8:1 bandwidth), a low loss, and a measured maximum efficiency of 54.6%. The special metal‐only feature circumvents the need for dielectric substrates and ground planes; such features result in a simple structure that allows it to be used in harsh environments such as space.