Caucho

Journal of Theoretical and Applied Information Technology
30th November 2011. Vol. 33 No.2

© 2005 - 2011 JATIT & LLS. All rights reserved.

ISSN: 1992-8645

www.jatit.org

E-ISSN: 1817-3195

DESIGN OF MICROSTRIP ANTENNA FOR WIRELESS
COMMUNICATION AT 2.4 GHZ
1,*

A.B. MUTIARA, 2,*R.REFIANTI, *RACHMANSYAH

*

Faculty of Computer Science and Information Technology, GunadarmaUniversity
Jl. Margonda Raya No.100, Depok 16424, Indonesia
E-mail : 1,2{amutiara,rina}@staff.gunadarma.ac.id

ABSTRACT
The paper presents a broadband microstrip patch antenna for wireless communication. In its most basic form,
a microstrip patch antenna consists of a radiating patch on one side of a dielectric substrate which has a
ground plane on the other side. The patch is generally made ofconducting material such as copper or gold
and can take any possible shape. A rectangular patch is used as the main radiator. There are several
advantages of this type of broadband antenna, such as planar, small in size, simple in structure, low in cost,
and easy to be fabricated, thus attractive for practical applications. This rectangular microstrip patch antenna
is designed for wirelesscommunication application that works at 2.4 GHz with gain 11 dB for outdoor place.
It also has a wide angle of beam in its radiation pattern. The results obtain that microstrip patch antenna can
be used as client antenna in computer and workable antenna for wireless fidelity.
Keywords:- Microstrip Antenna, Wireless Fidelity, Frequency
1. INTRODUCTION
One of types of wireless communication at2.4
GHz is Wireless Fidelity (WiFi). A WiFi enabled
device such as a personal computer, video game
console, smartphone or digital audio player can
connect to the Internet when within range of a
wireless network connected to the Internet [5]. The
coverage of one or more (interconnected) access
points (hotspot)can round up an area as small as a
few rooms or as large as many square miles.
Withthe development of MIC and high frequency
semiconductor devices, microstrip has drawn the
maximum attention of the antenna community in
recent years. In spite of its various attractive features
like, light weight, low cost, easy fabrication,
conformability on curved surface and so on, the
microstrip element suffers from an inherent
limitation of narrow impedance bandwidth.

radiatingpatch and the feed lines are usually photo
etched on the dielectric substrate.
Microstrip patch antennas radiate primarily
because of the fringing fields between the patch
edge and the ground plane. For good antenna
performance, a thick dielectric substrate having a
low dielectric constant is desirable since this
provides better efficiency, larger bandwidth and
better radiation [8].

2.METHODOLOGY ADAPTED
A. Antenna Shappe
In its most basic form, a Microstrip patch antenna
consists of a radiating patch on one side of a
dielectric substrate which has a ground plane on the
other side as shown in Figure 1. The patch is
generally made of conducting material such as
copper or gold and can take any possible shape. The

Fig. 1: Structure of Microstrip Patch Antenna [12]
B.Method of Analysis
Transmission line model represents the microstrip
antenna by two slots of width W and height h,
separated by a transmission line of length L. The
microstrip is essentially a nonhomogeneous line of

184

Journal of Theoretical and Applied Information Technology
30th November 2011. Vol. 33 No.2

© 2005 - 2011 JATIT & LLS. All rights reserved.

ISSN: 1992-8645www.jatit.org

two dielectrics, typically the substrate and air.
In Figure 2, most of the electric field lines reside
in the substrate and parts of some lines in air. As a
result, this transmission line cannot support pure
transverse electric- magnetic (TEM) mode of
transmission, since the phase velocities would be
different in the air and the substrate. Instead, the
dominant mode of propagation...