Accession Number : AD0477137


Title :   ADVANCED TUNING TECHNIQUES.


Descriptive Note : Quarterly rept. no. 1, 1 Jul-30 Oct 65,


Corporate Author : LITTON SYSTEMS INC MINNEAPOLIS MN APPLIED SCIENCE DIV


Personal Author(s) : McLeod, Fenwick R , Jr


Report Date : Jan 1966


Pagination or Media Count : 78


Abstract : The purpose of this program is to develop tunable, highly selective bandpass filters for the 30-cycle to 3-megacycle range. The techniques used are those of magnetic resonance. The theoretical problems associated with material limitations on filter systems is presented. Justifications are shown to support the chosen approach. The advanced tuning technique shall employ the 'linear-mixer: carrier NMR filter' approach for a single unit covering the entire frequency range. An NMR filter or optically pumped filter can be used for limited frequency ranges. (Author)


Descriptors :   *NUCLEAR MAGNETIC RESONANCE , *BANDPASS FILTERS , TUNING DEVICES , EXTREMELY LOW FREQUENCY , SUPERLOW FREQUENCY , ULTRALOW FREQUENCY , VERY LOW FREQUENCY , LOW FREQUENCY , MEDIUM FREQUENCY , OPTICAL PUMPING , COILS , NUCLEI , NUCLEAR SPINS , MIXERS(ELECTRONICS) , HALL EFFECT


Subject Categories : Electrical and Electronic Equipment


Distribution Statement : APPROVED FOR PUBLIC RELEASE