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. The TWT belongs to a category of linear beam tubes, such as the klystron, in which the radio . Invention, development. IFI designs, manufactures and distributes a full line of TWT (traveling wave tube) amplifiers for.
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It is capable of gains greater than dB with bandwidths exceeding an octave. A bandwidth of octave is one in which the upper frequency is twice the lower frequency. A parametric amplifier is a TWT amplifier that operates from a high-frequency alternating current ( AC ) power source, rather than the usual direct current ( DC ) source.
Some characteristic of the circuit, such as its impedance ,is made to vary with time at the power-supply frequency. Parametric amplifiers are useful because . Our Fort Walton Beach, FL facility designs and manufactures Keltec TWT amplifiers for simulators and satellite communications. These units can be designed for either commercial or military applications.
The TWT , because of its construction and working principle has enormous bandwidths and low noise. Travelling Wave Tube ( TWT ). The heated cathode at one end of the tube produces a beam of electrons and is attracted to the . On this channel you can get education and knowledge for general issues and topics. It accomplishes this through the interaction of an electron beam and an RF circuit known as a slow wave structure.
The term slow wave comes from the fact that the RF wave velocity as it travels down the circuit is much less than that of light . Overview, tutorial information and theory about the basics of the travelling wave tube, TWT , and the traveling wave tube amplifier , TWTA, used for very high frequency, high power RF amplifiers. The product line features outdoor designs and self-contained thermal management systems and includes both ground and airborne configurations for commercial and military applications. The Product Bulletin Index, below, includes information sheets on current products. However, please note that this is a representative sample only, to show capability.
Each TWT amplifier is uniquely designed for a particular application. Please contact CPI BMD directly for your specific requirements. TWTAs are still used in broadband applications, such as broadcasting, radar, and satellite communications (satcom) systems. Two types of tube devices are used in these amplifiers : broadband amplifiers are typically based on helix TWT devices while narrowband amplifiers may use coupled-cavity TWTs in . Magnetron Transmitter, TWT amplifier Manufacturer.
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Please use the links on this page for available support and assistance. B Control designs and manufactures high-power TWT Amplifiers , microwave power modules and power supplies for radar, ECM, communications and instrumentation. A broadban W-band gyro-traveling-wave-tube (gyro- TWT ) amplifier is currently under development at CPI.
A traveling wave tube HC-2are used as the output amplifier apparatus of radio communication in microwave range. TWTs are integrated with a regulated power supply and protection circuits to make a High Power Amplifiers (HPA), which commonly are used as amplifiers in satellite communication and terrestrial communication . The history of the twt goes back to the second world war, when research into radar devices and techniques was at a particularly intense level. The twt was invented in the Nuffield Laboratory Physics Department, Birmingham University ( also the birthplace of the cavity magnetron) by Rudolf Kompfner. Preliminary are reported on the design and performance of a high power travelling wave tube amplifier.
The amplifier is designed to work in the TMoi mode of a cylindrical waveguide and to operate in X band. The signal from a 2kW magnetron is used as the input source for the amplifier. Details are presented of . Broadband Microwave Power Amplifier Design 7. Introduction No discussion on broadband microwave power amplifiers would be complete, or even fair, without paying due respect to the traveling wave tube ( TWT ). This venerable device, now into its sixth decade, has changed remarkably little during that time, and it .