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. https://ieeexplore.ieee.org/document/8739515
Radiation characteristics of differentially-fed dual circularly polarized GNSS antenna
|Author:||Berg, M.1; Chen, J.1; Pärssinen, A.1|
1Centre for Wireless Communications - Radio Technologies Research Unit (CWC-RT), University of Oulu, Finland
|Online Access:||PDF Full Text (PDF, 0.5 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2019091628417
Institute of Electrical and Electronics Engineers,
|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.
IEEE Proceedings of the European Conference on Antennas and Propagation
|Pages:||1 - 5|
13th European Conference on Antennas and Propagation (EuCAP2019). 31 March-5 April 2019, Krakow, Poland
European Conference on Antennas and Propagation
|Type of Publication:||
A4 Article in conference proceedings
|Field of Science:||
213 Electronic, automation and communications engineering, electronics
This work was supported in part by the Academy of Finland 6Genesis Flagship (grant no. 318927).
|Academy of Finland Grant Number:||
318927 (Academy of Finland Funding decision)
© 2019 European Association on Antennas and Propagation.