Supporting WideBand circular polarization

Joshua M. Kovitz; Jun H. Choi; Yahya Rahmat-Samii

doi:10.1109/MMM.2017.2691458

Supporting WideBand circular polarization

Joshua M. Kovitz
, Jun H. Choi
, Yahya Rahmat-Samii

Department of Electrical Engineering

University of California at Los Angeles

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

The current state-of-the-art in CRLH integration for feed networks leading to wide-band circular polarization (CP) antennas and arrays is studied. A unique aspect discussed throughout was the balance between bandwidth and phase-error penalties. Based on the analysis presented, one could also design the CRLH networks to meet a maximum phase-error requirement. For the array example, we combined the exotic phase characteristics of composite right/left-handed transmission lines (CRLH-TL) and the wide bandwidth enabled by capacitive compensation to develop a high-performance CP antenna array with an AR less than 1 dB over a 40% bandwidth. The measured prototype demonstrated high-quality CP performance with good radiation patterns and directivity. Achieving this low AR performance over wide bandwidths with patch-antenna arrays is difficult to realize with other techniques.

Original language	English
Article number	7942235
Pages (from-to)	91-104
Number of pages	14
Journal	IEEE Microwave Magazine
Volume	18
Issue number	5
DOIs	https://doi.org/10.1109/MMM.2017.2691458
State	Published - 2017

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title = "Supporting WideBand circular polarization",

abstract = "The current state-of-the-art in CRLH integration for feed networks leading to wide-band circular polarization (CP) antennas and arrays is studied. A unique aspect discussed throughout was the balance between bandwidth and phase-error penalties. Based on the analysis presented, one could also design the CRLH networks to meet a maximum phase-error requirement. For the array example, we combined the exotic phase characteristics of composite right/left-handed transmission lines (CRLH-TL) and the wide bandwidth enabled by capacitive compensation to develop a high-performance CP antenna array with an AR less than 1 dB over a 40\% bandwidth. The measured prototype demonstrated high-quality CP performance with good radiation patterns and directivity. Achieving this low AR performance over wide bandwidths with patch-antenna arrays is difficult to realize with other techniques.",

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AB - The current state-of-the-art in CRLH integration for feed networks leading to wide-band circular polarization (CP) antennas and arrays is studied. A unique aspect discussed throughout was the balance between bandwidth and phase-error penalties. Based on the analysis presented, one could also design the CRLH networks to meet a maximum phase-error requirement. For the array example, we combined the exotic phase characteristics of composite right/left-handed transmission lines (CRLH-TL) and the wide bandwidth enabled by capacitive compensation to develop a high-performance CP antenna array with an AR less than 1 dB over a 40% bandwidth. The measured prototype demonstrated high-quality CP performance with good radiation patterns and directivity. Achieving this low AR performance over wide bandwidths with patch-antenna arrays is difficult to realize with other techniques.

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Supporting WideBand circular polarization

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