Rectangular Patch Monopole Antenna with Different Shaped Multiple Slots for Triple Band Frequency Applications

Umang Supekar; P. K. Singhal

Abstract

In this paper a rectangular patch microstrip antenna with different shaped multiple slots behaves as a triple band monopole antenna. It is designed for 0.96031–1.0464, 1.3766–1.5797 and 2.1629–2.3708 GHz frequency bands. A rectangular patch monopole antenna with multiple slots, i.e., hexagonal slot and rectangular slot is fabricated on the glass epoxy (FR4 lossy) of dielectric substrate with relative permittivity (εr) of 4.4, thickness of 1.6 mm, loss tangent of 0.02 with a ground plane, fed with a 50Ω rectangular micro strip feed line. In these antenna three different bands with three return losses measured below –20 dB in which one is below –50 dB within its impedance bandwidth along with omnidirectional radiation pattern. The novelty of this antenna is that no other antenna gives triple bands with minimum return losses in just 0–3 GHz band spectrum. This prototype antenna having an omnidirectional radiation pattern is measured for frequency range of 0–3 GHz. The measured reflection coefficients are far below of –10 dB. The simulated result and experimental results are analyzed and verified after comparison

Abstract

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