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- Backward-wave_oscillator abstract "A backward wave oscillator (BWO), also called carcinotron (a trade name for tubes manufactured by CSF, now Thales) or backward wave tube, is a vacuum tube that is used to generate microwaves up to the terahertz range. It belongs to the traveling-wave tube family. It is an oscillator with a wide electronic tuning range.An electron gun generates an electron beam that is interacting with a slow-wave structure. It sustains the oscillations by propagating a traveling wave backwards against the beam. The generated electromagnetic wave power has its group velocity directed oppositely to the direction of motion of the electrons. The output power is coupled out near the electron gun.It has two main subtypes, the M-type (M-BWO), the most powerful, and the O-type (O-BWO). The output power of the O-type is typically in the range of 1 mW at 1000 GHz to 50 mW at 200 GHz. Carcinotrons are used as powerful and stable microwave sources. Due to the good quality wavefront they produce (see below), they find use as illuminators in terahertz imaging.The backward wave oscillators were demonstrated in 1951, M-type by Bernard Epszteinand O-type by Rudolf Kompfner. The M-type BWO is a voltage-controlled non-resonant extrapolation of magnetron interaction, both types are tunable over a wide range of frequencies by varying the accelerating voltage. They can be swept through the band fast enough to be appearing to radiate over all the band at once, which makes them suitable for effective radar jamming, quickly tuning into the radar frequency. Carcinotrons allowed airborne radar jammers to be highly effective. However, frequency-agile radars can hop frequencies fast enough to force the jammer to use barrage jamming, diluting its output power over a wide band and significantly impairing its efficiency.Carcinotrons are used in research, civilian and military applications. For example, the Czechoslovak air defense detection systems Kopac passive sensor and Ramona passive sensor employed carcinotrons in their receiver systems.".
- Backward-wave_oscillator thumbnail Backward_wave_oscillator.jpg?width=300.
- Backward-wave_oscillator wikiPageExternalLink cv6124.htm.
- Backward-wave_oscillator wikiPageID "3057518".
- Backward-wave_oscillator wikiPageLength "8680".
- Backward-wave_oscillator wikiPageOutDegree "46".
- Backward-wave_oscillator wikiPageRevisionID "688438064".
- Backward-wave_oscillator wikiPageWikiLink Angular_frequency.
- Backward-wave_oscillator wikiPageWikiLink Barrage_jamming.
- Backward-wave_oscillator wikiPageWikiLink Bernard_Epsztein.
- Backward-wave_oscillator wikiPageWikiLink Category:Microwave_technology.
- Backward-wave_oscillator wikiPageWikiLink Category:Terahertz_technology.
- Backward-wave_oscillator wikiPageWikiLink Category:Vacuum_tubes.
- Backward-wave_oscillator wikiPageWikiLink Cathode_ray.
- Backward-wave_oscillator wikiPageWikiLink Cavity_magnetron.
- Backward-wave_oscillator wikiPageWikiLink Electromagnetic_radiation.
- Backward-wave_oscillator wikiPageWikiLink Electron_gun.
- Backward-wave_oscillator wikiPageWikiLink Electronic_oscillator.
- Backward-wave_oscillator wikiPageWikiLink Floquet_theory.
- Backward-wave_oscillator wikiPageWikiLink Frequency_agility.
- Backward-wave_oscillator wikiPageWikiLink Group_velocity.
- Backward-wave_oscillator wikiPageWikiLink Hertz.
- Backward-wave_oscillator wikiPageWikiLink Kopáč_passive_sensor.
- Backward-wave_oscillator wikiPageWikiLink Léon_Brillouin.
- Backward-wave_oscillator wikiPageWikiLink Magnetic_field.
- Backward-wave_oscillator wikiPageWikiLink Microwave.
- Backward-wave_oscillator wikiPageWikiLink Noise_temperature.
- Backward-wave_oscillator wikiPageWikiLink Oscillation.
- Backward-wave_oscillator wikiPageWikiLink Phase_velocity.
- Backward-wave_oscillator wikiPageWikiLink Potential_energy.
- Backward-wave_oscillator wikiPageWikiLink Power_(physics).
- Backward-wave_oscillator wikiPageWikiLink Radar.
- Backward-wave_oscillator wikiPageWikiLink Radar_jamming_and_deception.
- Backward-wave_oscillator wikiPageWikiLink Radio_frequency.
- Backward-wave_oscillator wikiPageWikiLink Ramona_passive_sensor.
- Backward-wave_oscillator wikiPageWikiLink Rudolf_Kompfner.
- Backward-wave_oscillator wikiPageWikiLink Terahertz_radiation.
- Backward-wave_oscillator wikiPageWikiLink Thales_Group.
- Backward-wave_oscillator wikiPageWikiLink Thomson-CSF.
- Backward-wave_oscillator wikiPageWikiLink Traveling-wave_tube.
- Backward-wave_oscillator wikiPageWikiLink Vacuum_tube.
- Backward-wave_oscillator wikiPageWikiLink Voltage.
- Backward-wave_oscillator wikiPageWikiLink Watt.
- Backward-wave_oscillator wikiPageWikiLink Wavefront.
- Backward-wave_oscillator wikiPageWikiLink Wavenumber.
- Backward-wave_oscillator wikiPageWikiLink File:Backward-wave_Oszillator-Stockholm.jpg.
- Backward-wave_oscillator wikiPageWikiLink File:Backward_wave_oscillator.jpg.
- Backward-wave_oscillator wikiPageWikiLink File:M-bwo.svg.
- Backward-wave_oscillator wikiPageWikiLink File:Space-harmonics.svg.
- Backward-wave_oscillator wikiPageWikiLinkText "Backward-wave oscillator".
- Backward-wave_oscillator wikiPageUsesTemplate Template:Electronic_components.
- Backward-wave_oscillator wikiPageUsesTemplate Template:More_footnotes.
- Backward-wave_oscillator wikiPageUsesTemplate Template:Reflist.
- Backward-wave_oscillator subject Category:Microwave_technology.
- Backward-wave_oscillator subject Category:Terahertz_technology.
- Backward-wave_oscillator subject Category:Vacuum_tubes.
- Backward-wave_oscillator hypernym Tube.
- Backward-wave_oscillator type AnatomicalStructure.
- Backward-wave_oscillator type Component.
- Backward-wave_oscillator comment "A backward wave oscillator (BWO), also called carcinotron (a trade name for tubes manufactured by CSF, now Thales) or backward wave tube, is a vacuum tube that is used to generate microwaves up to the terahertz range. It belongs to the traveling-wave tube family. It is an oscillator with a wide electronic tuning range.An electron gun generates an electron beam that is interacting with a slow-wave structure. It sustains the oscillations by propagating a traveling wave backwards against the beam.".
- Backward-wave_oscillator label "Backward-wave oscillator".
- Backward-wave_oscillator sameAs Q798548.
- Backward-wave_oscillator sameAs Backward-wave_Oszillator.
- Backward-wave_oscillator sameAs Հակադարձ_ալիքի_լամպ.
- Backward-wave_oscillator sameAs Кері_толқын_шамы.
- Backward-wave_oscillator sameAs Pretviļņa_lampa.
- Backward-wave_oscillator sameAs Karcinotron.
- Backward-wave_oscillator sameAs m.08nn_1.
- Backward-wave_oscillator sameAs Лампа_обратной_волны.
- Backward-wave_oscillator sameAs Q798548.
- Backward-wave_oscillator wasDerivedFrom Backward-wave_oscillator?oldid=688438064.
- Backward-wave_oscillator depiction Backward_wave_oscillator.jpg.
- Backward-wave_oscillator isPrimaryTopicOf Backward-wave_oscillator.