General purpose pole-zero single amplifier active filter

Details General purpose pole-zero single amplifier active filter General purpose pole-zero single amplifier active filter

1976-03-30

1977-09-20

Miller, Jr., Stanley D.

Amplifiers

Signal feedback

Combined with control of bias voltage of signal amplifier

330107, 333 70R, 307229, H03B 100

Patent

active

040500233

ABSTRACT:
The active filter circuit form of this invention is capable of realizing any general order linear transfer function, as for example, an all pass time delay or an elliptic function. There is no inductive element and only one operational amplifier which is directly output, eliminating problems with internal volume scaling or output impedance matching. A specific example realizes a single amplifier all pass delay with 8 complex roots.

REFERENCES:
patent: 3530395 (1970-09-01), Prusha
patent: 3609567 (1971-09-01), Webb
patent: 3904978 (1975-09-01), Daniels et al.
patent: 3919658 (1975-11-01), Friend

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