A new approach for radiation pattern measurement of RFID tag antenna under chip-loaded condition using Friis equation

Fang Yao Kuo*, Che Yang Chiang, Heng-Tung Hsu, Ting Jui Huang, Rung Sheng Sung

*此作品的通信作者

研究成果: Conference contribution同行評審

4 引文 斯高帕斯(Scopus)

摘要

A new approach for the measurement of radiation patterns for passive RFID tag antenna under chip-loaded condition using Friis equation is proposed in this paper. Different from the conventional situation where the antenna is matched to 50ω, the RFID tag antennas are usually designed to match to the conjugate chip impedance for maximum power transfer. Besides, the impedance of the tag IC usually varies with received power and thus traditional way of characterizing the radiation patterns and gain of the tag antenna using 50ω system may not be adequate. Based on the Friis equation, the proposed approach provides a straightforward way of determining the radiation patterns of tag antenna under chip loaded condition. The proposed approach has been applied to the measurement of two types of commercially available tags and proven effective.

原文English
主出版物標題2010 Asia-Pacific Microwave Conference Proceedings, APMC 2010
頁面2184-2187
頁數4
出版狀態Published - 12月 2010
事件2010 Asia-Pacific Microwave Conference, APMC 2010 - Yokohama, Japan
持續時間: 7 12月 201010 12月 2010

出版系列

名字Asia-Pacific Microwave Conference Proceedings, APMC

Conference

Conference2010 Asia-Pacific Microwave Conference, APMC 2010
國家/地區Japan
城市Yokohama
期間7/12/1010/12/10

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