Patch antenna enhancement using a mushroom-like EBG structures

Author

Neo, Cason ; Yee Hui Lee

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore

fYear

2013

fDate

7-13 July 2013

Firstpage

614

Lastpage

615

Abstract

The mushroom-like EBG structure is used to suppress the surface waves excited by a patch antenna while improving its gain. The frequency band gap characteristics of the mushroom-like EBG was first determined with the aid of the dispersion diagram. A clear band gap was observed and the dimensions were tweaked to cover 2.4 GHz. It was found in order to effectively suppress the surface waves, a minimum of 3 columns of mushroom-like EBG is required to surround the patch antenna. Different configurations for the placement of the mushroom-like EBGs around the patch were also examined in order to minimize the overall size of the antenna. It is shown in the final design that the periodic structure can effectively increase the directivity and gain of the antenna.

Keywords

UHF antennas; dispersion (wave); microstrip antennas; periodic structures; photonic band gap; surface electromagnetic waves; UHF antennas; dispersion diagram; electromagnetic band gap; frequency 2.4 GHz; frequency band gap characteristics; mushroom-like EBG structures; patch antenna enhancement; periodic structure; surface wave suppression; Metamaterials; Patch antennas; Photonic band gap; Resonant frequency; Surface waves;

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.2013.6710967

Filename

6710967