2.45 GHz end-loaded dipole backed by a high impedance surface

Author

Cure, David ; Melais, Sergio ; Weller, Thomas ; Herzig, Paul ; Roeder, Robert

Author_Institution

Univ. of South Florida, Tampa, FL, USA

fYear

2010

fDate

11-17 July 2010

Firstpage

1

Lastpage

4

Abstract

An end loaded planar open sleeve dipole (ELPOSD) antenna over an electromagnetic band gap (EBG) high impedance surface is presented. An ELPOSD consists of a printed dipole with two parasitic elements (sleeves) along its sides and capacitive loading at the end. This antenna is fed from beneath the ground plane by live vias connected to a microstrip to coplanar strip balun. The EBG structure is based on the Jerusalem Cross geometry and is sandwiched between two 1.27 mm-thick substrate layers, resulting in a total antenna thickness (excluding the feed layer) of ~λ/50. Measured performance of the antenna demonstrates a bandwidth of 30 MHz at 2.45 GHz, with a gain of ~3.5 dB.

Keywords

UHF antennas; antenna feeds; baluns; dipole antennas; photonic band gap; planar antennas; Jerusalem Cross geometry; UHF antennas; antenna thickness; bandwidth 30 MHz; electromagnetic band gap; end loaded planar open sleeve dipole antenna; frequency 2.45 GHz; ground plane; impedance surface; live vias; microstrip to coplanar strip balun; size 1.27 mm; Antenna measurements; Bandwidth; Dipole antennas; Impedance; Loss measurement; Substrates; Surface impedance;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium (APSURSI), 2010 IEEE

Conference_Location

Toronto, ON

ISSN

1522-3965

Print_ISBN

978-1-4244-4967-5

Type

conf

DOI

10.1109/APS.2010.5560911

Filename

5560911