Title :
Impedance modulation patterns for artificial-impedance-surface antennas
Author_Institution :
Appl. Electromagn. Lab., HRL Labs., LLC, Malibu, CA, USA
Abstract :
Artificial impedance surface antennas (AISAs) radiate by leaking surface waves from a spatially-modulated artificial impedance surface (AIS) whose modulation is designed to produce a preferred radiation pattern and polarization. Using the AISA radiation integral, a simple equation is obtained that quickly computes the modulation pattern for an AISA with arbitrary radiation angle and polarization. The versatility of that equation is demonstrated with examples that show how to design various linearly and circularly-polarized AISAs with tensor or scalar modulation.
Keywords :
antenna radiation patterns; modulation; polarisation; AISA radiation integral; artificial-impedance-surface antennas; circularly-polarized AISA; impedance modulation patterns; linearly circularly-polarized AISA; polarization; radiation pattern; scalar modulation; spatially-modulated artificial impedance surface; surface waves; tensor modulation; Antennas and propagation; Equations; Impedance; Modulation; Surface impedance; Surface waves; Tensile stress;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2013 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4673-5315-1
DOI :
10.1109/APS.2013.6711828
