Active RC bandpass filter with independent tuning and selectivity controls
Active RC bandpass filter with independent linear control of Q peak gain and frequency
Kerwin, W. J.↗
Engineering topics
Shaffer, C. V.
Publications and source records attributed to Shaffer, C. V..
Tunable bandpass filter with variable selectivity
Basic active RC networks constructed from stages that realize second-order transfer functions using two integrators offer excellent stability. Modifications of the basic network produce a highly stable bandpass filter having separate controls that independently adjust center frequency, Q, and center frequency gain.
Kerwin, W. J.↗
Multiloop distributed RC active networks for low parameter sensitivity with low amplifier gain.
Multiloop feedback in active distributed RC networks for low parameter sensitivity with low amplifier gain compared to single loop circuits
Kerwin, W. J.↗
Active rc filter permits easy trade-off of amplifier gain and sensitivity to gain
Passive RC network was designed with zeros of transmission in the right half of the complex frequency plane in the feedback loop of a simple negative-gain amplifier. The proper positioning provides any desired trade-off between amplifier gain and sensitivity to amplifier gain.
Kerwin, W. J.↗
An Integrable IF Amplifier of High Stability
Use of phantom zeros to achieve gain reduction for pole Q in integrable intermediate frequency amplifiers
Kerwin, W. J.↗
An integrable IF amplifier of high stability.
Stable integrable IF voltage amplifier with increased HF capability by gain reduction, showing network realizations for lumped and distributed RC circuits
Kerwin, W. J.↗
Realizability conditions for distributed rc networks
Explore the source record for details and available documents.
Newcomb, R. W.↗