University of Oulu

M. Berg, J. Chen and A. Pärssinen, "Radiation Characteristics of Differentially-Fed Dual Circularly Polarized GNSS Antenna," 2019 13th European Conference on Antennas and Propagation (EuCAP), Krakow, Poland, 2019, pp. 1-5.

Radiation characteristics of differentially-fed dual circularly polarized GNSS antenna

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Author: Berg, M.1; Chen, J.1; Pärssinen, A.1
Organizations: 1Centre for Wireless Communications - Radio Technologies Research Unit (CWC-RT), University of Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.5 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2019
Publish Date: 2019-09-16


This paper discusses the method to create a dual circular polarized antenna for GNSS applications. First time, the differentially-driven circular patch is demonstrated to create a feasible cross-polarization discrimination (XPD) for phase accurate antenna structure. Traditional choke rings are applied to control the radiation pattern characteristics. A separate feed network is used to obtain simultaneous left and right hand circular polarizations for the corresponding coaxial connectors of the antenna. The operation of the feed network is described by using a block diagram. Resulting antenna radiation parameters include max. gain of 6.2 dB, axial ratio < 3 dB over the upper hemisphere for the frequency range 1.55–1.61 GHz. The simulated antenna response for right hand polarized plane wave excitation demonstrate 27–29 dB isolation between the left and right hand antenna ports.

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Series: IEEE Proceedings of the European Conference on Antennas and Propagation
ISSN: 2164-3342
ISSN-L: 2164-3342
ISBN: 978-88-907018-8-7
ISBN Print: 978-1-5386-8127-5
Pages: 1 - 5
Host publication: 13th European Conference on Antennas and Propagation (EuCAP2019). 31 March-5 April 2019, Krakow, Poland
Conference: European Conference on Antennas and Propagation
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This work was supported in part by the Academy of Finland 6Genesis Flagship (grant no. 318927).
Academy of Finland Grant Number: 318927
Detailed Information: 318927 (Academy of Finland Funding decision)
Copyright information: © 2019 European Association on Antennas and Propagation.