Metal‐only ultra‐wideband reflectarray
Abstract 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...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2022-03-01
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| Series: | Electronics Letters |
| Online Access: | https://doi.org/10.1049/ell2.12439 |
| Summary: | Abstract 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. |
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| ISSN: | 0013-5194 1350-911X |