Undesired Radiation Suppression Technique for Distributed Array Antenna by Antenna Positioning and Delay Signal Processing

Kouhei SUZUKI  Hideya SO  Daisuke GOTO  Yoshinori SUZUKI  Fumihiro YAMASHITA  Katsuya NAKAHIRA  Kiyoshi KOBAYASHI  Takatoshi SUGIYAMA  

Publication
IEICE TRANSACTIONS on Communications   Vol.E100-B   No.10   pp.1959-1967
Publication Date: 2017/10/01
Online ISSN: 1745-1345
Type of Manuscript: PAPER
Category: Satellite Communications
Keyword: 
distributed array antenna (DAA),  undesired radiation suppression,  delay compensation,  satellite communication,  

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Summary: 
This paper introduces distributed array antenna (DAA) systems that offer high antenna gain. A DAA consists of several small antennas with improved antenna gain. This paper proposes a technique that suppresses the off-axis undesired radiation and compensates the time delay by combining signal processing with optimization of array element positioning. It suppresses the undesired radiation by compensating the delay timing with high accuracy and deliberately generating the inter-symbol interference (ISI) in side-lobe directions. Computer simulations show its effective suppression of the equivalent isotropic radiated power (EIRP) pattern and its excellent BER performance.