
Accession Number : AD0275597
Title : PRECISE FREQUENCY SYNTHESIS USING NONPRECISE TUNING COMPONENTS
Corporate Author : MICHIGAN UNIV ANN ARBOR
Personal Author(s) : BUTLER,T.W. JR.
Report Date : JUN 1961
Pagination or Media Count : 1
Abstract : Effort concer s the effec ive utili tio of o pr ci u i g compone ts in u iqu tec ni ues for precise frequency synthesis. Th se components are solidstate devices, such as variable capacitance diod s, ferroelectric capacitors, and controllable inductors. Combining a discretefrequency reference and an electro icallytuned pha elock oscill tor in he g ra io of pr ci fr u ci makes it po ible to construct a unit whos output frequency can have certain discrete values. This unit, called a discretefrequency generator, has an output frequency which is precisely one of the harmonics of the discretefrequency reference. By using several discr tefrequency generators, each with different increme al eps, combining, a d king t e mixed output, i is pos ibl to cov r id over ll range in small incremental step . The design and construction of a discretefrequency synthesizer which tunes ov r a 1mc range in 10kc steps (two significant figures) is carried out to demonstrate the practicability of the proposed tech ique. (Author)
Descriptors : *RADIOFREQUENCY GENERATORS, *SOLID STATE PHYSICS, *TUNING DEVICES, CAPACITORS, CIRCUITS, CRYSTAL OSCILLATORS, DIGITAL SYSTEMS, DIODES, FERROELECTRIC MATERIALS, MATHEMATICAL ANALYSIS, OSCILLATORS, PHASE STUDIES, SYNTHESIS, TUNED CIRCUITS
Distribution Statement : APPROVED FOR PUBLIC RELEASE