Title :
Passive complex bandpass filter using lossy and loose coupling transformers
Author :
Shouno, Kazuhiro ; Amano, You
Author_Institution :
Grad. Sch. of Syst. & Inf. Eng., Univ. of Tsukuba, Ibaraki, Japan
Abstract :
In this paper, we propose a passive complex bandpass filter using lossy and loose coupling transformers. The proposed complex filter has desired and undesired passbands. The undesired passband can be excluded by using transformers with suitable Q and coupling coefficient values. It is shown that the simulation circuit exhibits complex bandpass characteristics (9-11 rad/s) and an image rejection ratio of 61.7 dB.
Keywords :
band-pass filters; circuit simulation; passive filters; transformers; Q coefficient value; circuit simulation; coupling coefficient value; gain 61.7 dB; image rejection ratio; loose coupling transformers; lossy coupling transformer; passive complex bandpass filter; Couplings; Educational institutions; Equations; Frequency response; Passband; Prototypes; Resistors;
Conference_Titel :
Circuits and Systems (ISCAS), 2012 IEEE International Symposium on
Conference_Location :
Seoul
Print_ISBN :
978-1-4673-0218-0
DOI :
10.1109/ISCAS.2012.6271722
