NASA NTRS · 19850000162
Programable Driver for Voltage-Controlled Oscillators
Abstract
Electronically programable read-only memory (EPROM) and digital-to-analog converter provide customized time-varying voltage for frequency modulation. Voltage used to modulate IMPATT oscillator that serves as microwave pump for solid-state maser in low-noise amplifier. EPROM simple to tailor voltage waveform to suit characteristics of given maser. Digital information for waveform programed into EPROM chip; digital-to-analog converter reads information and produces corresponding analog wave. Principle readily adapted to other applications.
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Fowler, L. E., Mcneil, J. A.. 1985-10-01. Programable Driver for Voltage-Controlled Oscillators. https://ntrs.nasa.gov/citations/19850000162
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