Title :
Design of quadrifilar spiral antenna with integrated module for UHF RFID reader
Author :
Son, Wang-Ik ; Lim, Won-Gyu ; Lee, Moon-Que ; Min, Sang-Bo ; Yu, Jong-Won
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Korea Adv. Inst. of Sci. & Technol. (KAIST), Daejeon, South Korea
Abstract :
In this paper, a quadrifilar spiral antenna (QSA) with an integrated module for UHF radio frequency identification (RFID) reader is presented. The proposed QSA consists of four spiral antennas with short stubs and a microstrip feed network. Also, the shielded module is integrated on the center of the ground inside the proposed QSA. In order to match the proposed QSA with the integrated module, we adopt a short stub connected from each spiral antenna to ground. Experimental result shows that the QSA of size 80 × 80 × 11.2 mm3 with the integrated module (40 × 40 × 3 mm3) has a peak gain of 3.5 dBic, an axial ratio under 2.5 dB and a 3-dB beamwidth of about 130°.
Keywords :
UHF antennas; antenna feeds; integrated circuits; radiofrequency identification; spiral antennas; RFID; UHF; integrated module; microstrip feed network; quadrifilar spiral antenna; radio frequency identification reader; short stubs network; Dipole antennas; Feeds; Microstrip antennas; Mutual coupling; Optical reflection; Polarization; Radiofrequency identification; Reflector antennas; Spirals; UHF antennas; Quadrifilar spiral antenna; RFID reader antenna; circular polarization; module integrated antenna;
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.2009.5384358
