Compact Dual-Band Printed Quadrifilar Antennas for UHF RFID/GPS Operations

作者：Oh Kyoung Sub^*; Son Wang Ik; Cha Sung Yong; Lee Moon Que; Yu Jong Won

来源：IEEE Antennas and Wireless Propagation Letters, 2011, 10: 804-807.

DOI：10.1109/LAWP.2011.2163610

• Circular polarization
• dual-band antenna
• Global Positioning System (GPS)
• printed quadrifilar antenna (PQA)
• ultrahigh frequency radio frequency identification (UHF RFID)

This letter presents a simple and innovative method for designing and optimizing two circularly polarized printed quadrifilar antennas (PQAs). The PQAs are operated at UHF RFID (902-908 MHz) and GPS (1575 MHz) and intended for use at a portable terminal. This new antenna system comprises two PQAs concentrically arranged, but electrically isolated. Each PQA comprises four inverted-F monopoles arranged orthogonally and excited with a phase difference of 90 degrees.

• 出版日期2011