Title :
Time domain response of a UWB dipole array for impulse based chipless RFID reader
Author :
Koswatta, Randika V. ; Karmakar, Nemai C.
Author_Institution :
Dept. of Electr. & Comput. Syst. Eng., Monash Univ., Clayton, VIC, Australia
Abstract :
The time domain response of an ultra-wideband (UWB) 2 × 2 element dipole array is presented. The antenna is an elliptically shaped dipole array with a circular back reflector. It is operating over 3.9-9.5 GHz frequency band with >;9 dBi gain and 40° average 3 dB beamwidth. The forward transmission coefficient (S21) vs frequency of two identical antennas were measured at a fixed distance. The measured data is transformed to time domain to calculate the transient response of the antenna. Measured transient response of the antenna shows good time domain response with a sharp peak and a low ringing time. Experimental verification of the time domain performance shows good agreement with the measured results. The antenna is suitable for using as reader antennas in reading multi-resonator based chipless RFID tags with pulse based interrogation techniques.
Keywords :
dipole antenna arrays; microwave antenna arrays; radiofrequency identification; time-domain analysis; ultra wideband antennas; UWB dipole array; elliptical shaped dipole array antenna; forward transmission coefficient; frequency 3.9 GHz; frequency 9.5 GHz; impulse based chipless RFID reader; multiresonator; pulse based interrogation technique; time domain response; transient response; Antenna measurements; Dipole antennas; Frequency domain analysis; Receiving antennas; Time domain analysis; Ultra wideband antennas; RFID; Ultra-wideband; chipless RFID; dipole; frequency domain; time domain;
Conference_Titel :
Microwave Conference Proceedings (APMC), 2011 Asia-Pacific
Conference_Location :
Melbourne, VIC
Print_ISBN :
978-1-4577-2034-5
