Magnetron: Difference between revisions
From Glossary of Meteorology
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<div class="definition"><div class="short_definition">A self-excited [[oscillator]] used as a [[radar]] transmitter tube.</div><br/> <div class="paragraph">Magnetrons are characterized by high peak power, small size, efficient operation, and low operating voltage. Emitted electrons interact with an [[electric field]] and a strong [[magnetic field]] to generate [[microwave]] energy. Because the direction of the electric field that accelerates the [[electron beam]] is perpendicular to the axis of the magnetic field, magnetrons are sometimes referred to as crossed-field tubes. Unlike a [[klystron]], a magnetron is not a coherent transmission [[source]], but has a randomly changing [[phase]] from [[pulse]] to pulse. A coaxial magnetron uses a different architecture and has better stability, higher reliability, and longer life. Magnetrons are used in inexpensive radars and microwave ovens. <br/>''Compare'' [[klystron]].</div><br/> </div> | <div class="definition"><div class="short_definition">A self-excited [[oscillator]] used as a [[radar]] transmitter tube.</div><br/> <div class="paragraph">Magnetrons are characterized by high peak power, small size, efficient operation, and low operating voltage. Emitted electrons interact with an [[electric field]] and a strong [[magnetic field]] to generate [[microwave]] energy. Because the direction of the electric field that accelerates the [[electron beam|electron beam]] is perpendicular to the axis of the magnetic field, magnetrons are sometimes referred to as crossed-field tubes. Unlike a [[klystron]], a magnetron is not a coherent transmission [[source]], but has a randomly changing [[phase]] from [[pulse]] to pulse. A coaxial magnetron uses a different architecture and has better stability, higher reliability, and longer life. Magnetrons are used in inexpensive radars and microwave ovens. <br/>''Compare'' [[klystron]].</div><br/> </div> | ||
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Latest revision as of 16:22, 25 April 2012
magnetron
A self-excited oscillator used as a radar transmitter tube.
Magnetrons are characterized by high peak power, small size, efficient operation, and low operating voltage. Emitted electrons interact with an electric field and a strong magnetic field to generate microwave energy. Because the direction of the electric field that accelerates the electron beam is perpendicular to the axis of the magnetic field, magnetrons are sometimes referred to as crossed-field tubes. Unlike a klystron, a magnetron is not a coherent transmission source, but has a randomly changing phase from pulse to pulse. A coaxial magnetron uses a different architecture and has better stability, higher reliability, and longer life. Magnetrons are used in inexpensive radars and microwave ovens.
Compare klystron.
Compare klystron.
