On 19 Feb 2004 02:30:00 -0800, (Diego Stutzer)
wrote:
Is there some kind of procedure like the one for syntesizeing LC-Filters
(Butterworth, Chebychev,..)?

Hi Diego,

This can be done in a number of ways employing active components (I've
just seen the drift of the thread take on this complexity).

The Bi-Quad filter comes to mind and has been around implemented with
Op-Amps for quite a while.

Another is the cascaded, bucket-brigade chip from reticon (haven't
played with this for 20 years tho').

You could also build an MCU interfacing ADC and DAC chips or simply
step up to DSP chips for filters that are impossible to implement in
any combination of passive L-C-R combinations.

However, the Bi-Quad offers simultaneous Low Pass, Band Pass, Band
Reject, and High Pass outputs from one circuit configuration. For
playing around with, that flexibility is hard to beat.

73's
Richard Clark, KB7QHC