The Backfire-to-Broadside Symmetrical Beam-Scanning Periodic Offset Microstrip Antenna

• Published in: IEEE transactions on antennas and propagation Vol. 58; no. 11; pp. 3499 - 3504
• Main Authors: Yuanxin Li, Quan Xue, Yung, Edward Kai-Ning, Yunliang Long
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01-11-2010; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Antenna measurements; Antenna radiation patterns; Antennas; Applied sciences; Backfire; Backfire to broadside; Backfiring; Beams (structural); double-sided parallel-strip lines (DSPSL); Exact sciences and technology; Impedance; Microstrip; Microstrip antennas; microstrip leaky wave antenna; offset; Offsets; Planes; Radiocommunications; Scanning; Telecommunications; Telecommunications and information theory; Backfire to broadside; microstrip leaky wave antenna; offset; Strip line; Microstrip antennas; Leaky wave antennas; Scanning antenna; double-sided parallel-strip lines (DSPSL); Periodic structure
• ISSN: 0018-926X; 1558-2221
• DOI: 10.1109/TAP.2010.2071352

A backfire-to-broadside beam-scanning antenna with a periodic structure is described. The proposed antenna consists of the offset double-sided parallel-strip lines (DSPSL). The characteristics of the offset DSPSL have been studied, and then a series of offset DSPSL have been applied as the periodic antenna with a backfire-to-broadside symmetrical beam scanning capability. Both in plane and plane, main beams symmetrically steer from the backfire direction to the broadside direction with the increase of the operating frequency. The fractional impedance bandwidth has been broadened to nearly 50% by using the offset DSPSL structure.