Switched-current wave filters based on lossy integrators

Author

Psychalinos, C. ; Kontogiannopoulos, N.

Author_Institution

Phys. Dept., Aristotle Univ. of Thessaloniki, Greece

Volume

39

Issue

21

fYear

2003

Firstpage

1487

Lastpage

1488

Abstract

A new method for designing switched-current wave filters is presented. The LC ladder prototype filter is split into two-port subnetworks and their wave equivalents are obtained using the scattering parameters description. The elementary building block is chosen to be the wave equivalent of an inductance in series-branch, which is constructed from a lossy integrator configuration. The equivalents of the other reactive elements in series or shunt-branch can be readily obtained by interchanging the outputs of the elementary block and/or using inverters. Simulation results show that the sensitivity of the derived filter configurations, to the MOS transistor parameters mismatch, was minimised in comparison with the already known switched-current wave filter topologies.

Keywords

Chebyshev filters; S-parameters; inductance; integrating circuits; ladder filters; low-pass filters; network topology; sampled data filters; switched current circuits; two-port networks; Chebyshev lowpass filter; LC ladder prototype filter; MOS transistor parameters mismatch; analogue sampled-data filters; fifth-order SI lowpass wave filter; filter configuration sensitivity; inductance in series-branch; inverters; lossy integrators; scattering parameters description; shunt-branch; simulation results; switched-current wave filters; topology; two-port subnetworks; wave equivalents;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el:20030973

Filename

1242784