IEICE TRANSACTIONS on Communications
A New Scheme to Avoid Null Zone for HF-Band RFID with Diversity Combining of Loop Antennas
Summary :
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 13.1 dB.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E93-B No.10 pp.2666-2669
- Publication Date
- 2010/10/01
- Publicized
- Online ISSN
- 1745-1345
- DOI
- 10.1587/transcom.E93.B.2666
- Type of Manuscript
- Special Section LETTER (Special Section on Advanced Technologies in Antennas and Propagation in Conjunction with Main Topics of ISAP2009)
- Category
- Antennas
Authors
Keyword
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Hiroshi HIRAYAMA, Nobuyoshi KIKUMA, Kunio SAKAKIBARA, "A New Scheme to Avoid Null Zone for HF-Band RFID with Diversity Combining of Loop Antennas" in IEICE TRANSACTIONS on Communications,
vol. E93-B, no. 10, pp. 2666-2669, October 2010, doi: 10.1587/transcom.E93.B.2666.
Abstract: 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 13.1 dB.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E93.B.2666/_p
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@ARTICLE{e93-b_10_2666,
author={Hiroshi HIRAYAMA, Nobuyoshi KIKUMA, Kunio SAKAKIBARA, },
journal={IEICE TRANSACTIONS on Communications},
title={A New Scheme to Avoid Null Zone for HF-Band RFID with Diversity Combining of Loop Antennas},
year={2010},
volume={E93-B},
number={10},
pages={2666-2669},
abstract={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 13.1 dB.},
keywords={},
doi={10.1587/transcom.E93.B.2666},
ISSN={1745-1345},
month={October},}
Copy
TY - JOUR
TI - A New Scheme to Avoid Null Zone for HF-Band RFID with Diversity Combining of Loop Antennas
T2 - IEICE TRANSACTIONS on Communications
SP - 2666
EP - 2669
AU - Hiroshi HIRAYAMA
AU - Nobuyoshi KIKUMA
AU - Kunio SAKAKIBARA
PY - 2010
DO - 10.1587/transcom.E93.B.2666
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E93-B
IS - 10
JA - IEICE TRANSACTIONS on Communications
Y1 - October 2010
AB - 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 13.1 dB.
ER -
English
