Title :
New microstrip bandpass filter configuration with improved attenuation of one adjacent channel
Author :
Militaru, Nicolae ; Petrescu, Teodor ; Lojewski, George ; Banciu, Marian Gabriel
Author_Institution :
Dept. of Telecommun., Univ. Politeh. of Bucharest, Bucharest, Romania
Abstract :
A new topology for fourth-order microstrip bandpass filters is investigated in this paper. Compared to the classical quadruplet, the proposed new topology offers an extra coupling between two resonators, allowing this way the design of fourth order filters with two attenuation poles situated on the same side of the passband. A strongly asymmetric transfer characteristic can be obtained by a proper choice of the positions of the two attenuation poles, providing a high attenuation not only at a single frequency, but in a large adjacent frequency band, as needed in some diplexer applications.
Keywords :
band-pass filters; microstrip filters; microwave filters; adjacent channel; classical quadruplet; diplexer application; fourth-order microstrip bandpass filters; microstrip bandpass filter configuration; Band pass filters; Couplings; Filtering theory; Layout; Microstrip filters; Microwave filters; Resonator filters; coupling matrix; diplexers; microstrip filters;
Conference_Titel :
EUROCON - International Conference on Computer as a Tool (EUROCON), 2011 IEEE
Conference_Location :
Lisbon
Print_ISBN :
978-1-4244-7486-8
DOI :
10.1109/EUROCON.2011.5929330
