Title :
A novel design of an UHF RFID reader antenna for PDA
Author :
Kim, ShinChul ; Park, Hoon ; Lee, DongHyun ; Choi, Jaehoon
Author_Institution :
Hanyang Univ., Seoul
Abstract :
In this paper, a circularly polarized (CP) microstrip antenna with vertical ground for RFID (radio frequency identification) reader applications is presented. The proposed antenna is composed of a radiating patch on a substrate and a vertical ground surrounding four sides of the antenna. The vertical ground reduces the resonant frequency about 25% comparing to that without vertical ground. Relatively good antenna gain of 5.6 dBi is obtained for such a small antenna. The results show that the proposed antenna has good impedance and radiation characteristics over the required bandwidth, 950-956 MHz (Japanese UHF RFID band). The dimension (100x100x13 mm3) of the antenna is suitable to use for a handheld PDA.
Keywords :
UHF antennas; antenna radiation patterns; microstrip antennas; radiofrequency identification; PDA; UHF RFID reader antenna; bandwidth 950 MHz to 956 MHz; circularly polarized antenna; microstrip antenna; radiating patch; radiation characteristics; radio frequency identification; vertical ground surrounding; Application software; Feeds; Frequency; Microstrip antennas; Microwave antennas; Permittivity; Personal digital assistants; Polarization; Radiofrequency identification; UHF antennas; RFID reader antenna; circularly polarized antenna; size reduction; vertical ground;
Conference_Titel :
Microwave Conference, 2006. APMC 2006. Asia-Pacific
Conference_Location :
Yokohama
Print_ISBN :
978-4-902339-08-6
Electronic_ISBN :
978-4-902339-11-6
DOI :
10.1109/APMC.2006.4429684
