Title :
Optimization of noise performance for various topologies of microwave active recursive filters
Author :
Delmond, M. ; Billonnet, L. ; Jarry, B. ; Guillon, P.
Author_Institution :
IRCOM, Limoges Univ., France
Abstract :
This article deals with the improvement of the noise figure for three topologies of microwave active recursive filters. We show how, using a noise wave formalism , the noise factor of these filters can be effectively minimized by using appropriate unbalanced power dividers/combiners and an amplifier. A comparison between the different topologies is given. We start from measured results and validate our approach with simulated examples.
Keywords :
active filters; circuit noise; circuit optimisation; microwave filters; network topology; recursive filters; amplifier; microwave active recursive filter; noise figure; noise wave formalism; optimization; power combiner; power divider; topology; Active filters; Active noise reduction; Digital filters; Filtering; Frequency; Microwave filters; Noise figure; Topology; Transfer functions; Transversal filters;
Conference_Titel :
Microwave Symposium Digest, 1998 IEEE MTT-S International
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
0-7803-4471-5
DOI :
10.1109/MWSYM.1998.700582
