Resistor Loaded EBG Surfaces for Slot Antenna Design

Shenyi Cao, Yunqi Fu

College of Electronic Science and Engineering, National University of Defense Technology, Changsha, China.

DOI: 10.4236/jemaa.2013.57045                

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).

Keywords

EBG; Antenna; RCS

Conflicts of Interest

The authors declare no conflicts of interest.

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