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2016•International Symposium on Antennas and PropagationRequires access

On an expression of antenna factor for transmitting small loop antenna in liquid

Nozomu Ishii, Lira Hamada, Jerdvisanop Chakarothai, Kanako Wake, Soichi Watanabe

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Abstract

To evaluate specific absorption rate (SAR) of radio devices operated in MHz band, a small loop antenna can be used to calibrate a probe for estimating field intensity in the tissue-equivalent liquid. In our proposed method, field intensity radiated by a small loop antenna can be expressed in terms of its antenna factor in transmitting mode. In this paper, distance property of the antenna factor is analytically derived to determine a fitting curve.

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What this paper is about

To evaluate specific absorption rate (SAR) of radio devices operated in MHz band, a small loop antenna can be used to calibrate a probe for estimating field intensity in the tissue-equivalent liquid. In our proposed method, field intensity radiated by a small loop antenna can be expressed in terms of its antenna factor in transmitting mode. In this paper, distance property of the antenna factor is analytically derived to determine a fitting curve.

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Available abstract

To evaluate specific absorption rate (SAR) of radio devices operated in MHz band, a small loop antenna can be used to calibrate a probe for estimating field intensity in the tissue-equivalent liquid. In our proposed method, field intensity radiated by a small loop antenna can be expressed in terms of its antenna factor in transmitting mode. In this paper, distance property of the antenna factor is analytically derived to determine a fitting curve.

Key concepts: Loop antenna, Antenna measurement, Antenna factor, Antenna (radio), Loop (graph theory), Physics, Coaxial antenna, Antenna tuner

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