Title :
Exact synthesis of active lowpass frequency-dependent negative-resistance filters
Author :
Nightingale, C. ; Rollett, J.M.
Author_Institution :
Post Office, Research Department, London, UK
Abstract :
If resistances shunting the terminating capacitors of an active lowpass frequency-dependent negative-resistance (f.d.n.r.) filter are used to provide a d.c. path to the amplifier inputs, a redundant pole-zero pair is introduced. A method is described for designing such a filter so that the pole and zero coincide, and the filter exactly realises the desired transfer function.
Keywords :
active filters; negative resistance; network synthesis; poles and zeros; transfer functions; active filters; negative resistance; network synthesis; poles and zeros; transfer function;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19740026
