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

doi:10.1587/transcom.2016EBP3374

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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

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Keywords: distributed array antenna (DAA), undesired radiation suppression, delay compensation, satellite communication

JOURNAL RESTRICTED ACCESS

2017 Volume E100.B Issue 10 Pages 1959-1967

DOI https://doi.org/10.1587/transcom.2016EBP3374

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Abstract

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.

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