Broadband Surface-Wave Antenna With a Novel Nonuniform Tapered Metasurface

• Published in: IEEE antennas and wireless propagation letters Vol. 16; pp. 2902 - 2905
• Main Authors: Feng, Guirong, Chen, Lei, Xue, Xingsi, Shi, Xiaowei
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.01.2017; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Antenna measurements; Antenna radiation patterns; Antennas; Artificial magnetic conductor; Bandwidth; Bandwidths; Broadband; broadband antenna; Broadband antennas; Construction planning; metasurface (MS); Metasurfaces; Surface impedance; Surface waves; surface-wave antenna (SWA)
• ISSN: 1536-1225; 1548-5757
• DOI: 10.1109/LAWP.2017.2751621

A broadband surface-wave antenna with a monopole-like radiation pattern is presented. The antenna provides a wide bandwidth by two techniques, including the utilization of a novel nonuniform tapered metasurface that has smaller inner rectangular patches for exciting two resonant modes of TM 01 and TM 02 simultaneously, and a reduction of ground-plane size for constructively increasing surface-wave fields. The measured results show that the proposed antenna achieves a wide bandwidth of 33.1% (4.56-6.37 GHz) for a low profile of about 0.06 λ 0 and has an average gain of 6.34 dBi.