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A comparative study of group delay equalizers for satellite communications
Author(s) -
Shafeghati Mohsen,
Ahmadi Behzad,
Torabi Abdorreza
Publication year - 2020
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.22191
Subject(s) - transponder (aeronautics) , multiplexer , communications satellite , group delay and phase delay , bandwidth (computing) , electronic engineering , passband , filter (signal processing) , computer science , band pass filter , satellite , engineering , telecommunications , multiplexing , electrical engineering , aerospace engineering
This article presents a comparative study of four different group delay (GD) equalizers with a narrow band filter used as input multiplexer for a Ku‐band satellite transponder. A dual mode cylindrical filter with 36 MHz bandwidth is designed and fabricated. The filter GD is measured and two types of group‐delay equalizers are designed to fulfill the requirements of the transponder's GD mask. Two rectangular and two cylindrical equalizers are designed and their performance parameters, such as insertion loss and equalized bandwidth, are compared. In addition, a comparison between the designed first order (C‐section) and second order (D‐section) GD equalizers is done.