D. F. Sheahan

发表

Crystal and mechanical filters

Robert A. Johnson, D. F. Sheahan, R. Johnson, 1975 .

High-quality transistorised gyrator

D. F. Sheahan, H. J. Orchard, 1966 .

Inductorless bandpass filters

D. F. Sheahan, H. J. Orchard, 1970 .

Polylithic Crystal Filters

D. F. Sheahan, 1975 .

Bandpass-filter realisation using gyrators

D. F. Sheahan, H. J. Orchard, 1967 .

Gyrator-flotation circuit

D. F. Sheahan, 1967 .

Integratable gyrator using m.o.s. and bipolar transistors

D. F. Sheahan, H. J. Orchard, H. Orchard, 1966 .

An improved resonance equation for AT-cut quartz crystals

D. F. Sheahan, 1970 .