TITLE:
Resistor Loaded EBG Surfaces for Slot Antenna Design
AUTHORS:
Shenyi Cao, Yunqi Fu
KEYWORDS:
EBG; Antenna; RCS
JOURNAL NAME:
Journal of Electromagnetic Analysis and Applications,
Vol.5 No.7,
July
9,
2013
ABSTRACT: We present a resistor loaded EBG surface
(REBG) for antenna design. Specifically, lumped resistors are embedded between periodic metal patches of
mushroom like EBG structures. Surface wave propagation along the REBG surface
is analyzed as a periodically loaded transmission line model and low
transmission bandgap is identified and experimentally verified. The reflection properties of REBG surface to the incident
electromagnetic waves are also studied. Slot antenna is placed within the REBG surface.
The REBG surface is used to suppress surface waves across the antenna aperture,
resulting in radiation performance improvement. Concurrently, the REBG surface
can also absorb electromagnetic energy to reduce antenna radar cross section (RCS).