Frequency control

DEC 01, 1963

The Seventeenth Annual Frequency Control Symposium sponsored by the Solid State and Frequency Control Division of the US Army Electronics Research and Development Laboratories, Fort Monmouth, N.J., was held on April 27, 28, and 29, 1963, in Atlantic City, N.J. Over 550 people participated in this review of technical progress, including representatives from Germany, England, France, Switzerland, Israel, Canada, The Netherlands, Australia, Japan, and the United States.

DOI: 10.1063/1.3050656

A. D. Ballato

C. E. Searles

The subject of frequency control is closely bound up with that of timekeeping where the primary requirement is for a device or system to play the part of a pendulum. At the lower end of the frequency spectrum in the audio range up to several hundred megacycles, the “pendulum” consists most often of a mechanical resonance structure such as a tuning fork or quartz crystal vibrator whose frequency is determined from the classical theory of elasticity. The other major division of the frequency‐control field is occupied by devices that utilize quantum‐mechanical principles for their operation, where the “pendulum” is identified with an atomic or molecular resonance, and where the frequency, consequently, is in the gigacycle range.

This article is only available in PDF format

More about the authors

A. D. Ballato, US Army Electronics Research and Development Laboratory, Ft. Monmouth, N.J..

C. E. Searles, US Army Electronics Research and Development Laboratory, Ft. Monmouth, N.J..