CST – Computer Simulation Technology

Lightweight Portable Planar Slot Array Antenna for Satellite Communications in X-Band
J. M. Fernández González, P. Padilla, G. Expósito-Domínguez, M. Sierra-Castañer
IEEE Antennas and Wireless Propagation Letters
Volume: 10, 2011
Lightweight antenna, planar antenna, portable antenna, radial-line slot antenna (RLSA), satellite communications, slot array antenna, X-band
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- 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.

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