An HIS-Based Spiral Antenna for Pattern Reconfigurable Applications

作者：Deo Prafulla^*; Mehta Amit; Mirshekar Syahkal Dariush; Nakano Hisamatsu

来源：IEEE Antennas and Wireless Propagation Letters, 2009, 8: 196-199.

DOI：10.1109/LAWP.2008.2010003

• Beam reconfigurability
• high-impedance surface (HIS)
• spiral antenna

Single arm rectangular spiral antenna with four open circuit switches over a high-impedance surface (HIS) is proposed for pattern reconfigurable applications. The HIS plane without vias is utilized to achieve a low-profile antenna design with a net thickness of 5.08 mm. This is equivalent to similar to lambda(o)/17 for the intended operating frequency of 3.3 GHz. By using the possible sixteen switching combinations a near 360 degrees beam steering is achieved, and the switched beams do not have a polarization variation from one pattern to another. The realized pattern reconfigurable antenna has both the tilted (theta(max) >= 25 degrees) and axial (5 degrees < theta(max) < 10 degrees) beams, which have an average directivity of 6.9 dBi.

• 出版日期2009