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Vacuum tube used for amplifying radio waves
An IOT for UHF ATSC broadcast television, manufactured by e2v and shown new in packaging.
The inductive output tube (IOT) or klystrode is a variety of linear-beam vacuum tube, similar to a klystron, used as a power amplifier for high frequency radio waves. It evolved in the 1980s to meet increasing efficiency requirements for high-power RF amplifiers in radio transmitters.[1] The primary commercial use of IOTs is in UHF television transmitters,[2] where they have mostly replaced klystrons because of their higher efficiencies (35% to 40%) and smaller size. IOTs are also used in particle accelerators. They are capable of producing power output up to about 30 kW continuous and 7 MW pulsed and power gains of 20–23 dB at frequencies up to about a gigahertz.[2]
^Whitaker, Jerry C. (2005). The Electronics Handbook, 2nd Ed. CRC Press. pp. 488–489. ISBN 1420036661.
^ abSisodia, M. L. (2006). Microwave Active Devices : Vacuum And Solid State. New Age International. pp. 3.47–3.49. ISBN 8122414478.
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