FEASIBILITY STUDY OF TIME SCALE SELECTOR FOR ADAPTER SYNTHESIZER.
Abstract
The feasibility of adding incremental offsets to the Adapter Synthesizer was explored. These offsets are accomplished by replacing a divide-by 1,643 circuit with a divide-by 1,659 circuit and a divide-by 24,337 + n. The summation of the outputs of the two dividers yields the desired frequency and a spectrum of sums and differences of their harmonics. Techniques used for extracting the desired frequency included single sideband suppressed carrier as well as more conventional mixers and filters. The single sideband suppressed carrier technique could not attenuate all unwanted sidebands the required minimum of 40 db. A crystal filter had a sufficient Q but was too large for the existing package. Two series coupled tuning fork filters had the desired response and could be conveniently packaged. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1966
- Accession Number
- AD0482141
Entities
People
- Donald J. Farmer
- George M. Anderson