IEICE Transactions on Communications
Online ISSN : 1745-1345
Print ISSN : 0916-8516
Special Section on Advanced Technologies in Antennas and Propagation in Conjunction with Main Topics of ISAP2009
Performance Evaluation of Spatial Correlation Characteristics for Handset Antennas Using Spatial Fading Emulator Based on Clarke's Model
Hiroshi IWAIKei SAKAGUCHITsutomu SAKATAAtsushi YAMAMOTO
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2010 Volume E93.B Issue 10 Pages 2514-2522

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Abstract

This paper describes a spatial fading emulator based on Clarke's model that can evaluate spatial correlation characteristics between signals received by handset antennas including human-body effect under emulated multipath propagation environments. The proposed model is composed of scatterers, phase-shifters and attenuators. The scatterers are located at equal intervals on the circumference of a circle. Phase shifters and attenuators in a control circuit are used to control the phase and amplitude of each wave radiated from the scatterers in order to emulate multi-path propagation environments, such as Rayleigh or Nakagami-Rice distribution, to be generated at their center. In this paper, the maximum distance between receiving antennas that could be used to evaluate spatial correlation characteristics between antennas was investigated experimentally. The measurement results show that 15 scatterers with a radius of 1.5m are sufficient to evaluate spatial correlation characteristics within the branch separation of 1.7λ when parallel dipole antennas are used as receiving antennas.

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© 2010 The Institute of Electronics, Information and Communication Engineers
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