Title :
The design of log-domain filters based on the operational simulation of LC ladders
Author :
Perry, Douglas ; Roberts, Gordon W.
Author_Institution :
Dept. of Electr. Eng., McGill Univ., Montreal, Que., Canada
fDate :
11/1/1996 12:00:00 AM
Abstract :
A technique for the design of log-domain filters is introduced which is based on the operational simulation of LC ladders. The method is used to design a fifth-order Chebyshev and elliptic filter. HSPICE simulation results and experimental results are shown with emphasis on frequency behavior and linearity. The filters showed good correlation between the original filter specifications and the measured frequency response. They proved to be easily tunable and could be operated up to 1 MHz or one tenth of the fT of the slowest transistor. Total harmonic distortion and intermodulation distortion was measured with results up to -47 and -55 dB, respectively
Keywords :
Chebyshev filters; SPICE; active filters; circuit analysis computing; digital simulation; elliptic filters; frequency response; harmonic distortion; intermodulation distortion; ladder filters; HSPICE simulation results; LC ladders; elliptic filter; fifth-order Chebyshev filter; filter specifications; frequency behavior; frequency response; intermodulation distortion; linearity; log-domain filters; total harmonic distortion; Chebyshev approximation; Circuit simulation; Design methodology; Distortion measurement; Filters; Frequency measurement; Frequency response; Linearity; Microelectronics; Tunable circuits and devices;
Journal_Title :
Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on
