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An offset CPW-fed triple-band circularly polarized printed antenna for multiband wireless applications
Affiliation:1. Department of Electronics and Communication Engineering, Government Mahila Engineering College, Ajmer, India;2. Department of Electronics Instrumentation & Control Engineering, Government Engineering College, Ajmer, India;3. School of Engineering and Applied Sciences, Bennett University, Greater Noida, India;1. Department of Electronics and Communication Engineering, Bennett University, Greater Noida, Uttar Pradesh 201310, India;2. Department of Electronics and Communication Engineering, Netaji Subhas Institute of Technology, Sector-3, Dwarka, New Delhi 110078, India;1. Department of Electronics and Communication Engineering, Netaji Subhas Institute of Technology, Sector-3, Dwarka, New Delhi 110078, India;2. Department of Electronics and Communication Engineering, Bennett University, Greater Noida, Uttar Pradesh 201310, India;1. Department of Electronics and Communication Engineering, Charotar University of Science and Technology, Changa, Gujarat, India;2. Department of Electrical and Electronic Engineering, Izmir Katip Celebi University, Izmir, Turkey
Abstract:An offset coplanar waveguide (CPW)-fed triple-band circularly polarized tilted asymmetrical E-shaped printed antenna for multiband wireless applications is presented in this paper. The antenna mainly consists of a tilted asymmetrical E-shaped patch and excite by a 50 Ω offset CPW feed line using a transformer for impedance matching to generate wide quad operating bands. By properly embedding rectangular slots in the tilted asymmetrical E-shaped patch and triangular stubs loaded modified CPW ground plane, the antenna reveals triple-band circular polarization (CP) features. Numerical analysis and experimental validation of the antenna structure have been carried out and results are presented. The mechanism of triple-band CP operation, analysis of surface current distributions, design procedure, and parametric study of the design is discussed in details. It is well suited for the application of UMTS-2100, 3.5/5.5 GHz WiMAX, 5.2/5.8 GHz WLAN, ITS, downlink of X-band satellite communication, and ITU 8 GHz bands.
Keywords:Circular polarization  E-shaped patch  Printed antenna  Wireless communication frequencies
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