Title :
Design and Realization of a Dual-Mode Circular Waveguide Filter for Digital Audio Broadcasting (DAB) Applications
Author :
Mezzanotte, Paolo ; Alimenti, Federico ; Roselli, Luca ; Sordi, Sergio
Author_Institution :
Istituto di Elettronica, UniversitÃ\xa0 di Perugia, Via G. Duranti, 93, I-06131 Perugia, Italy. Tel. +39-75-5852633, Fax +39-75-5852654, e-mail: urlo@ing.unipg.it
Abstract :
DAB applications demand the realization of band-pass filters with very stringent characteristics. In this paper this requirements have been fulfilled by designing and realizing a four-pole elliptic transfer function by means of a Dual-Mode Circular Waveguide Filter (DMCWF). This design has been performed by adopting a conventional synthesis strategy. The most critical aspect of this structure, that is its difficult tunability, has been overcome by experimentally adjusting the filter dimensions following a CAD procedure extensively described in the paper.
Keywords :
Band pass filters; Bandwidth; Coupling circuits; Digital audio broadcasting; Digital filters; Equivalent circuits; Fasteners; Rectangular waveguides; Resonance; Transfer functions;
Conference_Titel :
Microwave Conference, 1997. 27th European
Conference_Location :
Jerusalem, Israel
DOI :
10.1109/EUMA.1997.337888
