Title :
Transmit/receive isolator for UHF RFID reader with wideband balanced directional coupler
Author :
Jang, Hyeong-Seok ; Lim, Won-Gyu ; Yu, Jong-Won
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Korea Adv. Inst. of Sci. & Technol., Daejeon, South Korea
Abstract :
A wideband balanced directional coupler for UHF RFID reader is proposed. The wideband balanced coupler has a high isolation feature insensitive to load variations. The transmit and receive isolation characteristic is achieved for UHF RFID band (860~960 MHz). The proposed structure has an isolation of more than 45 dB in the UHF RFID band according to the variations in matching.
Keywords :
UHF antennas; directional couplers; radiofrequency identification; receiving antennas; transmitting antennas; UHF RFID reader; antenna matching; bandwidth 860 MHz to 960 MHz; transmit-receive isolator; wideband balanced directional coupler; Broadband antennas; Directional couplers; Frequency; Isolation technology; Isolators; Radiofrequency identification; Reflection; Reflector antennas; UHF antennas; Wideband; Antenna isolation; UHF RFID; directional coupler; front-end; wideband;
Conference_Titel :
Microwave Conference, 2009. APMC 2009. Asia Pacific
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-2801-4
Electronic_ISBN :
978-1-4244-2802-1
DOI :
10.1109/APMC.2009.5385318
