Helical reflector antenna with a wideband CP for RFID reader

A novel helical reflector antenna is presented to cover the whole UHF RFID band (860~960 MHz). The proposed antenna has a ground reflector and is composed of two antenna layers which are connected by via to form a helical structure. The total length of the proposed antenna is 1~1.3 ¿ to have the hig...

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Bibliographic Details
Published in2009 Asia Pacific Microwave Conference pp. 1032 - 1035
Main Authors Dong-Zo Kim, Hyun-Sung Tae, Kyoung-Sub Oh, Moon-Que Lee, Jong-Won Yu
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.12.2009
Subjects
Bandwidth
Broadband antennas
circular polarization
Geometry
helical antenna
Helical antennas
Impedance
Patch antennas
Polarization
Radio spectrum management
Radiofrequency identification
reflector antenna
Reflector antennas
RFID reader antenna
wide bandwidth
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Summary:A novel helical reflector antenna is presented to cover the whole UHF RFID band (860~960 MHz). The proposed antenna has a ground reflector and is composed of two antenna layers which are connected by via to form a helical structure. The total length of the proposed antenna is 1~1.3 ¿ to have the higher antenna impedance. And the antenna gain is increased by using a ground reflector. The size of the proposed antenna is 200 × 200 × 35 mm 3 similar to commercial RFID patch antenna with a high gain. It satisfies -10 dB return loss and 3 dB axial ratio in the RFID band. The measured antenna gain is approximately 6.5~9 dBic.
ISBN:9781424428014
1424428017
ISSN:2165-4727
2165-4743
DOI:10.1109/APMC.2009.5384359