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41 relations: Angular frequency, Bandwidth (signal processing), Barrage jamming, Cancer, Cathode ray, Cavity magnetron, Electromagnetic radiation, Electron, Electron gun, Electronic oscillator, Floquet theory, Frequency agility, Group velocity, Hertz, Klystron, Kopáč passive sensor, Léon Brillouin, Magnetic field, Microwave, Noise temperature, Oscillation, Phase velocity, Potential energy, Power (physics), Radar, Radar display, Radar horizon, Radar jamming and deception, Radio frequency, Ramona passive sensor, Rudolf Kompfner, Side lobe, Terahertz radiation, Thales Group, Thomson-CSF, Traveling-wave tube, Vacuum tube, Voltage, Watt, Wavefront, Wavenumber.
Angular frequency
In physics, angular frequency ω (also referred to by the terms angular speed, radial frequency, circular frequency, orbital frequency, radian frequency, and pulsatance) is a scalar measure of rotation rate.
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Bandwidth (signal processing)
Bandwidth is the difference between the upper and lower frequencies in a continuous band of frequencies.
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Barrage jamming
Barrage jamming is radio jamming accomplished by transmitting a band of frequencies that is large with respect to the bandwidth of a single emitter.
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Cancer
Cancer is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body.
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Cathode ray
Cathode rays (also called an electron beam or e-beam) are streams of electrons observed in vacuum tubes.
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Cavity magnetron
The cavity magnetron is a high-powered vacuum tube that generates microwaves using the interaction of a stream of electrons with a magnetic field while moving past a series of open metal cavities (cavity resonators).
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Electromagnetic radiation
In physics, electromagnetic radiation (EM radiation or EMR) refers to the waves (or their quanta, photons) of the electromagnetic field, propagating (radiating) through space-time, carrying electromagnetic radiant energy.
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Electron
The electron is a subatomic particle, symbol or, whose electric charge is negative one elementary charge.
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Electron gun
An electron gun (also called electron emitter) is an electrical component in some vacuum tubes that produces a narrow, collimated electron beam that has a precise kinetic energy.
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Electronic oscillator
An electronic oscillator is an electronic circuit that produces a periodic, oscillating electronic signal, often a sine wave or a square wave.
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Floquet theory
Floquet theory is a branch of the theory of ordinary differential equations relating to the class of solutions to periodic linear differential equations of the form with \displaystyle A(t) a piecewise continuous periodic function with period T and defines the state of the stability of solutions.
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Frequency agility
Frequency agility is the ability of a radar system to quickly shift its operating frequency to account for atmospheric effects, jamming, mutual interference with friendly sources, or to make it more difficult to locate the radar broadcaster through radio direction finding.
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Group velocity
The group velocity of a wave is the velocity with which the overall shape of the wave's amplitudes—known as the modulation or envelope of the wave—propagates through space.
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Hertz
The hertz (symbol: Hz) is the derived unit of frequency in the International System of Units (SI) and is defined as one cycle per second.
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Klystron
A klystron is a specialized linear-beam vacuum tube, invented in 1937 by American electrical engineers Russell and Sigurd Varian,Pond, Norman H. "The Tube Guys".
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Kopáč passive sensor
Kopáč (the word means "digger" in Czech) was an early electronic warfare support measures (ESM) system developed in Czechoslovakia in the early 1960s that used measurements of time difference of arrival (TDOA) of pulses at three sites to accurately detect and track airborne emitters.
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Léon Brillouin
Léon Nicolas Brillouin (August 7, 1889 – October 4, 1969) was a French physicist.
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Magnetic field
A magnetic field is a vector field that describes the magnetic influence of electrical currents and magnetized materials.
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Microwave
Microwaves are a form of electromagnetic radiation with wavelengths ranging from one meter to one millimeter; with frequencies between and.
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Noise temperature
In electronics, noise temperature is one way of expressing the level of available noise power introduced by a component or source.
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Oscillation
Oscillation is the repetitive variation, typically in time, of some measure about a central value (often a point of equilibrium) or between two or more different states.
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Phase velocity
The phase velocity of a wave is the rate at which the phase of the wave propagates in space.
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Potential energy
In physics, potential energy is the energy possessed by an object because of its position relative to other objects, stresses within itself, its electric charge, or other factors.
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Power (physics)
In physics, power is the rate of doing work, the amount of energy transferred per unit time.
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Radar
Radar is an object-detection system that uses radio waves to determine the range, angle, or velocity of objects.
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Radar display
A radar display is an electronic device to present radar data to the operator.
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Radar horizon
The radar horizon is a critical area of performance for aircraft detection systems that is defined by the distance at which the radar beam rises enough above the Earth's surface to make detection of a target at low level impossible.
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Radar jamming and deception
Radar jamming and deception (electronic countermeasures) is the intentional emission of radio frequency signals to interfere with the operation of a radar by saturating its receiver with noise or false information.
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Radio frequency
Radio frequency (RF) refers to oscillatory change in voltage or current in a circuit, waveguide or transmission line in the range extending from around twenty thousand times per second to around three hundred billion times per second, roughly between the upper limit of audio and the lower limit of infrared.
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Ramona passive sensor
Ramona was the second generation Czechoslovak electronic support measures (ESM) system that uses measurements of time difference of arrival (TDOA) of pulses at three or four sites to accurately detect and track airborne emitters by multilateration.
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Rudolf Kompfner
Rudolf Kompfner (May 16, 1909 – December 3, 1977) was an Austrian-born engineer and physicist, best known as the inventor of the traveling-wave tube (TWT).
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Side lobe
In antenna engineering, side lobes or sidelobes are the lobes (local maxima) of the far field radiation pattern that are not the main lobe.
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Terahertz radiation
Terahertz radiation – also known as submillimeter radiation, terahertz waves, tremendously high frequency (THF), T-rays, T-waves, T-light, T-lux or THz – consists of electromagnetic waves within the ITU-designated band of frequencies from 0.3 to 3 terahertz (THz; 1012 Hz).
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Thales Group
Thales Group is a French multinational company that designs and builds electrical systems and provides services for the aerospace, defence, transportation and security markets.
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Thomson-CSF
Thomson-CSF was a major electronics and defence contractor.
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Traveling-wave tube
A traveling-wave tube (TWT, pronounced "twit") or traveling-wave tube amplifier (TWTA, pronounced "tweeta") is a specialized vacuum tube that is used in electronics to amplify radio frequency (RF) signals in the microwave range.
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Vacuum tube
In electronics, a vacuum tube, an electron tube, or just a tube (North America), or valve (Britain and some other regions) is a device that controls electric current between electrodes in an evacuated container.
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Voltage
Voltage, electric potential difference, electric pressure or electric tension (formally denoted or, but more often simply as V or U, for instance in the context of Ohm's or Kirchhoff's circuit laws) is the difference in electric potential between two points.
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Watt
The watt (symbol: W) is a unit of power.
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Wavefront
In physics, a wavefront is the locus of points characterized by propagation of positions of identical phase: propagation of a point in 1D, a curve in 2D or a surface in 3D.
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Wavenumber
In the physical sciences, the wavenumber (also wave number or repetency) is the spatial frequency of a wave, measured in cycles per unit distance or radians per unit distance.
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Backward wave oscillator, Backward wave tube, Backward-wave tube, Carcinotron, Karcinotron.
References
[1] https://en.wikipedia.org/wiki/Backward-wave_oscillator
