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Lightweight Portable Planar Slot Array Antenna for Satellite Communications in X-Band

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4 Author(s)
Gonzalez, J.M.F. ; Signals, Syst. & Radiocommun. Dept., Tech. Univ. of Madrid, Madrid, Spain ; Padilla, P. ; Exposito-Dominguez, G. ; Sierra-Castaner, M.

A lightweight portable planar slot array antenna at X-band for fixed satellite communications is presented in this letter. The terminal is composed of two radial-line slot antennas (RLSAs) with the slots placed on the upper layer in spiral: one for reception (RX) band with left-handed circular polarization (LHCP), and the other one for transmission (TX) band with right-handed circular polarization (RHCP). A lightweight two-layer dielectric structure is used to achieve and optimize the RLSA weight. The radiating element is a slot pair, designed to provide circular polarization. The feeding network consists of a 50-Ω SMA connector for each RLSA. A radiation efficiency of more than 70% is achieved due to the low dielectric constant substrate. Finally, measurements of the lightweight portable planar RX/TX antenna prototypes are presented and compared to simulations, where very good agreement is observed.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:10 )

Date of Publication:

2011

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