Enhancement of bandwidth through I-shaped Defected Ground Structure

Author

Ripin, N. ; Yusoff, S.N.C. ; Sulaiman, A.A. ; Rashid, N.E.A. ; Hussin, M.F.

Author_Institution

Fac. of Electr. Eng., Univ. Teknol. MARA, Shah Alam, Malaysia

fYear

2013

fDate

9-11 Dec. 2013

Firstpage

477

Lastpage

481

Abstract

This paper discuss on a rectangular microstrip patch antenna incorporated with I-shaped Defected Ground Structure (DGS) metamaterial which exhibit an enhancement of 118% bandwidth compared to the conventional design. The antenna is designed for S-band application, resonates at 2.45 GHz. The I-shaped DGS shows the metamaterial characteristics with negative permeability, μ and permittivity, ε through Nicolson-Ross-Weir method. The circuit was designed using Computer Simulation Technology (CST) Microwave Studio. Based on the simulation, the antenna also shows other improvement in term of gain and return loss of 17.6% and 71.89%, respectively. The Size of the radiating patch was also reduced for about 21% The performance of the fabricated antenna such as antenna gain, return loss, bandwidth and directivity were also measured using the Vector Network Analyzer (VNA) for a verification.

Keywords

UHF antennas; microstrip antennas; microwave metamaterials; network analysers; CST Microwave Studio; I-shaped defected ground structure; Nicolson-Ross-Weir method; S-band; VNA; antenna gain; bandwidth enhancement; circuit design; computer simulation technology; frequency 2.45 GHz; metamaterial; negative permeability; permittivity; rectangular microstrip patch antenna; return loss; vector network analyzer; Antenna measurements; Bandwidth; Metamaterials; Microstrip; Microstrip antennas; Patch antennas; Bandwidth enhancement; defected ground structure (DGS); metamaterial and patch antenna;

fLanguage

English

Publisher

ieee

Conference_Titel

RF and Microwave Conference (RFM), 2013 IEEE International

Conference_Location

Penang

Print_ISBN

978-1-4799-2213-0

Type

conf

DOI

10.1109/RFM.2013.6757310

Filename

6757310