Universal RFID Reader Antenna

Finally, the paper Slits Loaded CP Universal UHF RFID Reader Antenna is published today in IEEE AWPL, Vol 14, pp. 827-830. It took us quite an effort to get this antenna done and measured. The novelty of this work is by loading three slits into the patch, resulting in a near sequential rotational field that iinduces an additional CP frequency. This work was part of the Master's Thesis of Yi-Wen Hsu (許溢文), who has graduated and left our Lab in July 2014.