Accession Number : AD0164391

Title :   Proton Maser Antenna Tuning Means.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Webster,Jonathan C. ; Sloan,Earl L. , III

Report Date : 03 APR 1973

Pagination or Media Count : 5

Abstract : The patent describes a tuning means capable of extending the low frequency sensitivity of a proton maser antenna to higher frequencies. This is done by magnetically chopping the effective permeability of the maser antenna magnet at the local oscillator frequency. This effectively chops the received signal at the local oscillator rate and translates it to the fixed system frequency f(IF). The system electronics are tuned to receive only the maser sidebands corresponding to f(IF), and tuning is accomplished by varying the local oscillator frequency.

Descriptors :   *Antennas, *Patents, Masers

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE