Design and Analysis of Dual Band Circularly Polarized Stacked Patch Antenna for GPS Application

P  Satyanarayana; K  V  Prasad  and M  V  S  Prasad  nbsp

doi:10.17485/ijst/2016/v9iS1/107888

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Design and Analysis of Dual Band Circularly Polarized Stacked Patch Antenna for GPS Application

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Indian Journal of Science and Technology

DOI: 10.17485/ijst/2016/v9iS1/107888

Year: 2016, Volume: 9, Issue: Special Issue 1, Pages: 1-5

Original Article

Design and Analysis of Dual Band Circularly Polarized Stacked Patch Antenna for GPS Application

P. Satyanarayana¹ , K. V. Prasad¹ and M. V. S. Prasad²

¹ Department of ECE, V R Siddhartha Engineering College, Vijayawada – 520007, Andhra Pradesh, India
² Department of ECE, RVR and JC College of Engineering, Guntur – 522019, Andhra Pradesh, India

This work is licensed under a Creative Commons Attribution 4.0 International License.

Abstract

In communications, antennas are the very important equipments are necessary to generate a communication system. Antennas are used in several applications like satellite communications etc. The design specifications of the antenna are considered using the transmission line model and designed with stacked square patches for multiple band operation with improved impedance matching. The Diagonal feed divides the given field into two orthogonal modes with equal magnitude and equal phase shift. The feed position is then optimized to attain the small axial ratio necessary to attain circular polarization at required frequency. The antenna has been designed at two different frequency bands with center frequencies of 1575 MHz and 1176 MHz. So the dual band circular polarization has been successfully incorporated into two square patches.
Keywords: Circular Polarization, Stacked Square Patches