NDLI: An improved method for analyzing & compensating of GDV in transmission line for broadband satellite system

Content Provider	IEEE Xplore Digital Library
Author	Eskandari, A.R. Mohammady, L.
Copyright Year	2008
Description	Author affiliation: Iran Telecommun. Res. Center (ITRC), Tehran (Eskandari, A.R.; Mohammady, L.)
Abstract	Group Delay Variations (GDV) versus frequency is an essential factor which causes distortion and degradation in wideband satellite signals specially when using phase modulation and high data rates. cables and filters used in antenna subsystem in satellite stations are are the most critical parts producing signal distortion. In this paper, cables is analyzed as a dispersive medium and some kinds of coaxial cables such as RG58U, RG59U, RG213 and ECOFLEX15 that used in satellite terminals, are compared as GDV parameter point of view. Then the effect of reflections from discontinuities and impedance mismatches at transmission lines, on GDV quantity, is investigated by suggesting a novel network model of transmission line with discontinuity or impedance mismatch, and extracting a new formula for GDV. Graphical data are presented based upon the formula developed, and the simulation results are also given by AWR software which confirms the theory and formula. At last, based on the developed formula, some calculations will be carried out both to predict the values of GDV parameter and to compensate it.
Starting Page	294
Ending Page	299
File Size	1555583
Page Count	6
File Format	PDF
ISBN	9781424424252
DOI	10.1109/CCE.2008.4578975
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-06-04
Publisher Place	Vietnam
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Coaxial cables Delay systems coaxial cables Broadband antennas transmission lines Phase distortion Transmission lines Satellites Transmission line discontinuities group delay variations mismatch Frequency Transmission line theory Impedance dispersion discontinuity Group delay
Content Type	Text
Resource Type	Article

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