A steerable leaky-wave antenna using a tunable impedance ground plane

Author

Sievenpiper, Dan ; Schaffner, Jim ; Lee, J.J. ; Livingston, Stan

Author_Institution

HRL Labs. LLC, Malibu, CA, USA

Volume

1

Issue

1

fYear

2002

fDate

6/24/1905 12:00:00 AM

Firstpage

179

Lastpage

182

Abstract

A steerable leaky-wave antenna is built using a mechanically tunable impedance surface. A horizontally polarized antenna couples energy into leaky transverse electric waves on a tunable textured ground plane. By tuning the resonance frequency of the surface, the band structure is shifted in frequency, which changes the tangential wave vector of the leaky waves for a fixed frequency. This steers the elevation angle of the resulting radiated beam. This steerable leaky-wave antenna can scan over a range of 45/spl deg/ using a mechanical movement of about 1/500 wavelength.

Keywords

UHF antennas; antenna radiation patterns; beam steering; conformal antennas; electric impedance; electromagnetic wave polarisation; leaky wave antennas; scanning antennas; surface electromagnetic waves; tuning; 2.5 GHz; conformal antennas; electromagnetic surface waves; elevation angle; horizontal polarization; radiation patterns; resonance frequency; scanning antennas; steerable leaky-wave antenna; tangential wave vector; textured ground plane; transverse electric waves; tunable impedance ground plane; Corrugated surfaces; Leaky wave antennas; Magnetic resonance; Polarization; Resonant frequency; Surface impedance; Surface texture; Surface waves; Tellurium; Tuning;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2002.807788

Filename

1177190