An improved design and implementation of a broadband circularly polarized antenna

Chien Hsing Lee; Yu Han Chang

doi:10.1109/TAP.2014.2309962

An improved design and implementation of a broadband circularly polarized antenna

Chien Hsing Lee, Yu Han Chang

Department of Systems and Naval Mechatronic Engineering

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Abstract

This communication presents an improved design and implementation of a broadband circularly polarized antenna that features a size reduction, good axial-ratio bandwidth and good return loss bandwidth. The circuit comprises one Schiffman phase shifter that is used to obtain a wideband phase difference of 90$^\circ, and a pair of orthogonally positioned linearly polarized slot antennas with equal radiation strength that are used to accomplish a circular polarization by combining the horizontally and vertically polarized waves with a Wilkinson power divider. Measured results show that the 3 dB axial-ratio bandwidth of the proposed antenna can reach 81.5% (1.6-3.8 GHz), and the 10 dB return loss bandwidth is 100% (1.48-4.47 GHz).

Original language	English
Article number	6756953
Pages (from-to)	3343-3348
Number of pages	6
Journal	IEEE Transactions on Antennas and Propagation
Volume	62
Issue number	6
DOIs	https://doi.org/10.1109/TAP.2014.2309962
Publication status	Published - 2014 Jun

All Science Journal Classification (ASJC) codes

Electrical and Electronic Engineering

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10.1109/TAP.2014.2309962

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An improved design and implementation of a broadband circularly polarized antenna

Abstract

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