Rectangular Microstrip Patch Antennas with Defected Ground Structure using Double I Slot for Mobile Applications

Smrity Dwivedi

In this paper, a new Defected Ground Structure (DGS) consisting of double I-shape slot in ground has been presented for Bandwidth enhancement of the Micro strip Patch Antenna (MPA). The parameters such as Bandwidth, Return loss and VSWR are much improved in proposed antenna than simple MPA without defected ground structure. Finite Element Method (FEM) based High Frequency Structure Simulator (HFSS) software Version-13.0 is used to obtain the performance parameters of the proposed antenna. The obtained results indicate that the DGS of length reduction with three, one and two notches at difference location of the ground, gives an enhancement of bandwidth percentage (relative to centre frequency) of 134% (3.42-17.45) GHz, for rectangular patch. Also a size reduction of 83.5% achieved for rectangular patch at 4.06 GHz, compared with the antennas having the same geometrical structure and operating at the same resonance frequencies, but without DGS. Three different dielectric substrates namely: Duroid FR-epoxy and Rogers for TM10 are considered. The results indicate that the resonance frequency is shifted towards the lower values with increasing the relative permittivity and the antenna bandwidth reduces.

Select Volume / Issues:

• Volume 6,Issue 5, Sept. 2015

Year:

2015

Type of Publication:

Article

Keywords:

Rectangular patch Antenna; Defected Ground Structure; Return Loss; VSWR; Bandwidth

Journal:

IJECCE

Volume:

6

Number:

5

Pages:

572-576

Month:

September