A Design of a Metamaterial Integrated Triple Band Antenna for Wireless Applications

Abstract

This paper represents a metamaterial (MTM)

integrated antenna for multi-band operation. MTMs are

integrated on the top and bottom sides of a slot-ring antenna.

The basic slot-ring antenna operates at 2.4 GHz. A single

complementary split ring resonator (CSRR) is placed on the

ground plane and a circular shaped split ring resonator (SRR)

is integrated on the top of the substrate. Integration of CSRR

gives rise to a new resonant frequency at 1.5 GHz. After using

SRR, a third band generates at 3.1 GHz. By using this structure,

a single antenna can cover three operating bands. A microstrip

line is used to feed the antenna. The triple band antenna is

compact because MTM unit cells size is smaller than their

wavelength used to produce resonance at a lower frequency. To

analyze the performance of the proposed antenna reflection

coefficient, radiation pattern, and gain are analyzed. The

simulated gains are 0.71 dBi, 2.9 dBi, and 3.2 dBi corresponding

to bands of 1.5 GHz, 2.4 GHz, and 3.1 GHz, respectively. The

impedance bandwidths are 1.33%, 9.17%, 5.5% at the

1.5/2.4/3.1 GHz, respectively. Good separation between co- and

cross-polarizations is achieved. The three operating bands at

1.5/2.4/3.1 GHz support the allotted bands for GPS, WLAN and

RADAR applications.