A New Scheme to Avoid Null Zone for HF-Band RFID with Diversity Combining of Loop Antennas
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概要
- 論文の詳細を見る
A new scheme to avoid null zone for HF-band RFID without expanding antenna size is proposed. At first, we demonstrate by FDTD simulation that the null zone occurs because of cancellation of magnetic fields over the loop surface. To prevent cancellation of magnetic fields, the loop antenna is split into four parts, which work as a planar array antenna. The outputs of antennas are gathered by using combining circuit. We have validated by FDTD simulation that the proposed scheme enlarges the worst received power by 13.1dB.
- （社）電子情報通信学会の論文
- 2010-10-01
著者
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Hirayama Hiroshi
Dept. of Computer Science and Engineering, Nagoya Institute of Technology
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Kikuma Nobuyoshi
Dept. of Computer Science and Engineering, Nagoya Institute of Technology
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Sakakibara Kunio
Dept. of Computer Science and Engineering, Nagoya Institute of Technology
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Kikuma Nobuyoshi
Nagoya Institute of Technology
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Hirayama Hiroshi
Dept. Of Computer Science And Engineering Nagoya Institute Of Technology
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Kikuma Nobuyoshi
Dept. Of Computer Science And Engineering Nagoya Institute Of Technology
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SAKAKIBARA Kunio
Nagoya Institute of Technology
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Sakakibara Kunio
Dept. Of Computer Science And Engineering Nagoya Institute Of Technology
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