An electronic device producing coherent monochromatic microwave radiation; it produces less noise than other forms of microwave oscillator.
An acronym for Microwave Amplification by Stimulated Emission of Radiation. A device that can produce coherent electromagnetic radiation in the microwave frequency band; used in atomic clocks and to amplify weak radio signals. Masers which operate at optical frequencies are called lasers.
Precision amplifier developed for satellite communications which will amplify very weak signals.