A low profile electronically-steerable artificial-impedance-surface antenna

Author

Gregoire, D.J. ; Colburn, J.S. ; Patel, A.M. ; Quarfoth, Ryan ; Sievenpiper, Daniel

Author_Institution

Appl. Electromagn. Lab., HRL Labs., LLC, Malibu, CA, USA

fYear

2014

fDate

3-8 Aug. 2014

Firstpage

477

Lastpage

479

Abstract

A Ku-band, electronically-steerable, artificial-impedance-surface antenna (AISA) was designed, fabricated and measured. It is capable of scanning in elevation from -70° to 80° with gain variation of less than 5 dB. The antenna operates by launching a surface wave along a surface-wave waveguide (SWG) whose impedance elements are rectangular patches with electrically tunable capacitors between them. The radiation beam is scanned in elevation by applying voltages to the varactors to change the SWG´s impedance pattern. Azimuthal scanning can be accomplished with a linear array of SWGs whose relative radiation phases are controlled with variations in the impedance patterns.

Keywords

antenna radiation patterns; leaky wave antennas; linear antenna arrays; waveguide antenna arrays; AISA; Ku-band; SWG impedance pattern; artificial-impedance-surface antenna; electrically tunable capacitors; impedance elements; linear array; low profile electronically-steerable antenna; radiation beam; rectangular patches; relative radiation phases; surface-wave waveguide; Arrays; Gain; Impedance; Modulation; Surface impedance; Surface waves; Varactors;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetics in Advanced Applications (ICEAA), 2014 International Conference on

Conference_Location

Palm Beach

Print_ISBN

978-1-4799-7325-5

Type

conf

DOI

10.1109/ICEAA.2014.6903901

Filename

6903901