Title :
Unbalanced lattice switched-current filters
Author :
De Queiroz, Antônio Carlos M
Author_Institution :
COPPE, Univ. Federal do Rio de Janeiro, Brazil
Abstract :
This paper shows how switched-current filters can be derived from passive filters obtained by the unbalancing of doubly terminated LC lattice structures. The process is similar to what would be done for the simulation of more conventional ladder structures, but the use of lattice prototypes allows the realization in an almost physically symmetrical structure. A comparation of sensitivity characteristics between second-generation and component-simulation switched-current filters is also shown
Keywords :
active filters; elliptic filters; lattice filters; switched current circuits; almost physically symmetrical structure; component-simulation filters; doubly terminated LC lattice structures; second-generation filters; sensitivity characteristics; unbalanced lattice switched-current filters; Attenuation; Chebyshev approximation; Filtering theory; Lattices; Low pass filters; Passband; Passive filters; Polynomials; Prototypes; Sampling methods;
Conference_Titel :
Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-6685-9
DOI :
10.1109/ISCAS.2001.921773
