Log-domain filters based on LC ladder synthesis

Author

Perry, D. ; Roberts, G.W.

Author_Institution

Dept. of Electr. Eng., McGill Univ., Montreal, Que., Canada

Volume

1

fYear

1995

fDate

30 Apr-3 May 1995

Firstpage

311

Abstract

A design method is proposed for the synthesis of linear, high-order, continuous-time filters using a unique translinear integrator circuit. Unlike previous attempts at incorporating translinear circuits into filter design, the proposed theory makes explicit use of the exponential nature of the bipolar transistor. This technique is based on the operational simulation of LC ladders. A 5th-order Chebyshev filter is designed, simulated and verified experimentally. The filter shows good amplitude response as well as distortion levels comparable to other filtering schemes

Keywords

Chebyshev filters; continuous time filters; electric distortion; integrating circuits; ladder filters; linear network synthesis; lumped parameter networks; LC ladder synthesis; amplitude response; bipolar transistor; continuous-time filters; distortion levels; exponential nature; fifth-order Chebyshev filter; log-domain filters; operational simulation; translinear integrator circuit; Bipolar transistors; Chebyshev approximation; Circuit simulation; Circuit synthesis; Design methodology; Filtering; Laboratories; Linear systems; Microelectronics; Nonlinear filters;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1995. ISCAS '95., 1995 IEEE International Symposium on

Conference_Location

Seattle, WA

Print_ISBN

0-7803-2570-2

Type

conf

DOI

10.1109/ISCAS.1995.521513

Filename

521513