Title :
New circuits for realization of the 1st and 2nd order all-pass LC filters with a better technological feasibility
Author :
Hájek, Karel ; Sedlacek, Z. ; Sviezeny, Bohumir
Author_Institution :
Dept. of Electr. Eng., Mil. Acad. Bmo, Brno, Czech Republic
Abstract :
The all-pass LC circuits can be used for example for the group delay equalized low-pass filters. This application brings technological problems with mutual inductance for the high frequency area. This paper describes new solutions of all-pass LC circuits. The 2nd order all-pass circuits can be realized without mutual inductance for quality factor Q<1 by the new circuit. The new circuit for realization 1st order allpass circuits does not require the ideal unity coupling coefficient for coils with mutual inductance. By this method all-pass filters can be realized more simply for the high frequency area.
Keywords :
Q-factor; all-pass filters; linear network analysis; linear network synthesis; lumped parameter networks; passive filters; all-pass LC circuits; first-order LC filters; mutual inductance; quality factor; second-order LC filters; Attenuation; Coils; Coupling circuits; Delay; Filters; Frequency; Inductance; Lattices; Mutual coupling; Q factor;
Conference_Titel :
Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on
Print_ISBN :
0-7803-7448-7
DOI :
10.1109/ISCAS.2002.1010276
