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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Ismail, M.Y. Cahill, R. Amin, M. Zain, A.F.M. Amin, M.K. |
| Copyright Year | 2007 |
| Description | Author affiliation: Commun. Eng. Dept., Univ. of Tun Hussein Onn Malaysia Batu Pahat, Batu Pahat (Ismail, M.Y.) |
| Abstract | In this paper, the phase agility of the patch antenna periodic array using K15 nematic liquid crystal as the dielectric medium is presented. Numerical and experimental results at X-band are used to compare the plane wave scattering parameter from a two patch antenna reflectarray cell of 500 mum. The dependence of reflection phase versus frequency and gradient on loss tangent is characterized. A tunable dynamic phase range of 221deg is achieved over a bandwidth of 170 MHz with dielectric anisotropy of 0.17. The simulated results are validated by experimental measurements. Furthermore the measured results demonstrate that within a certain frequency band, at any frequency, the RCS of the reflectarray can be dynamically controlled using DC bias voltage and hence its RCS signature can be reduced electronically. |
| Starting Page | 1 |
| Ending Page | 4 |
| File Size | 1325548 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781424407484 |
| DOI | 10.1109/APMC.2007.4554761 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2007-12-11 |
| Publisher Place | Thailand |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Patch antennas Liquid crystals Frequency Dielectric substrates Phased arrays Antenna measurements Dielectric measurements Antenna arrays Dielectric liquids Scattering parameters Dynamic Phase Range Dielectric Anisotropy Liquid Crystal LC reflectarray |
| Content Type | Text |
| Resource Type | Article |
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