University of Oulu

A. Regmi, M. R. Islam, A. Pärssinen and M. Berg, "Depolarization Due to Wedge Diffraction in Satellite Radiowave Communication," 2020 14th European Conference on Antennas and Propagation (EuCAP), Copenhagen, Denmark, 2020, pp. 1-4, doi: 10.23919/EuCAP48036.2020.9135519

Depolarization due to wedge diffraction in satellite radiowave communication

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Author: Regmi, Ankit1; Islam, Rafiqul1; Pärssinen, Aarno1;
Organizations: 1Centre for Wireless Communication-Radio Technologies (CWC-RT) University of Oulu, Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 1 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2020
Publish Date: 2020-07-13


In this paper, the depolarization effect due to the electromagnetic wave diffraction from the rooftop wedge of a building at 1.575 GHz frequency is presented. Diffraction measurement was performed using a dual circularly polarized (CP) antenna system. The Right Hand Circularly Polarized (RHCP) Global Positioning System (GPS) satellite transmission was utilized for measurement. The orbital motion of a single satellite enabled diffraction measurement as a function of the receiver depth in the shadow region, while the receiver was static. The experimental result of RHCP signal was compared with a theoretical knife-edge diffraction model, and they were in good agreement. In case of the deep shadow region, we found the levels of left- and right circular polarized signals to be equal, which indicates a strong depolarization of the incident RHCP wave. The observed depolarization for conductive wedge is explained by the geometrical theory of diffraction.

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ISBN: 978-88-31299-00-8
ISBN Print: 978-1-7281-3712-4
Pages: 1 - 4
DOI: 10.23919/EuCAP48036.2020.9135519
Host publication: 14th European Conference on Antennas and Propagation (EuCAP), March 15-20, 2020, Copenhagen, Denmark
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). InfoTech Oulu is also acknowledged for financial support through doctoral training position.
Academy of Finland Grant Number: 318927
Detailed Information: 318927 (Academy of Finland Funding decision)
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