A high-impedance surface using annular-slot-loaded ground plane

Author

McMichael, Ian T. ; Mirotznik, Mark ; Zaghloul, Amir I.

Author_Institution

US Army RDECOM CERDEC NVSED, Fort Belvoir, VA, USA

fYear

2013

fDate

7-13 July 2013

Firstpage

1570

Lastpage

1571

Abstract

This paper presents a simple realization of a high impedance surface that can be used for low profile antennas with circular current distributions. The surface consists of an annular slot backed by a thin grounded substrate. The annular-slot-loaded ground plane reflects incident radiation with a phase centered at 0-dgrees at a resonance frequency that is a function of the slot and substrate parameters. This enhances the radiation in the broadside direction. Simulation and measurement results of a loop antenna validate the design concept and are compared with a mushroom-type EBG ground plane. A parametric analysis is also conducted with a spiral antenna placed above the annular-slot-loaded ground plane.

Keywords

current distribution; loop antennas; photonic band gap; slot antennas; annular-slot-loaded ground plane; broadside direction; circular current distributions; high-impedance surface; incident radiation; loop antenna; low profile antennas; mushroom-type EBG ground plane; resonance frequency; slot parameters; spiral antenna; substrate parameters; thin grounded substrate; Antenna measurements; Impedance; Loaded antennas; Resonant frequency; Slot antennas; Substrates; Surface impedance;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium (APSURSI), 2013 IEEE

Conference_Location

Orlando, FL

ISSN

1522-3965

Print_ISBN

978-1-4673-5315-1

Type

conf

DOI

10.1109/APS.2013.6711444

Filename

6711444