Difference between Travelling Wave Tube and Klystron. 1. In TWT, field travels along with the beam. In Klystron, the field is stationary and only. 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, Coupled cavity TWT – in which the radio wave interacts with the beam in a. between magnetrons, klystrons, traveling-wave tubes (TWTs), and gyrotrons. They are quite old books but they will give you a start in the area of cross field.

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In Klystron, the field is stationary and only beam travels. What is the difference between pipe and tube? His original patent, “Device for and Method of Controlling High Frequency Currents”, was filed in and granted in TWT-Travelling Wave Tube It is one of the important microwave tubes mainly used for wide bandwidth, high gain, low noise and moderate peak and average power requirement.

Difference between Travelling Wave Tube and Klystron

In other projects Wikimedia Commons. Distinguish, differentiate, compare and explain what is the main difference between Travelling Wave Tube and Klystron Tube in Microwave Communication. The main difference between the operation of a TWT and a klystron is that klystrron the TWTs’ circuit operates in a non-resonant mode, the klystrons’ circuit operates in a resonant mode.

Operation is similar to that of a klystronexcept that coupled-cavity TWTs are designed with attenuation between the beyween structure instead of a drift tube. A traveling-wave tube TWTpronounced “twit” or traveling-wave tube amplifier TWTA twy, pronounced “tweeta” is a specialized vacuum tube that is used in electronics to amplify radio frequency RF signals in the microwave range.

Klystron uses cavities for input and output circuits and is a narrow band device. Tubingis designated by the measured OD outside diameter. By controlling the accelerating voltage, the speed of the electrons flowing down the tube is set to be similar to the speed of the RF signal running down the helix. It is used to produce high-power radio frequency signals. By the time it reaches the other end of the tube, this process has had time to deposit considerable energy back into the helix.



The main difference between most power supplies and those for vacuum tubes is that efficient vacuum tubes have depressed collectors to recycle kinetic energy of the electrons, so the secondary winding of the power supply needs up to 6 taps of which the helix voltage needs precise regulation. There are intermediate cavities between buncher and catcher cavities in multi cavity klystron.

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Traveling-wave tube

Even in such a case, however, the contents can be used safely. A certainsize of a tube will keep the same OD no mater what the thicknessis. The process whereby a time varn in vel is impressed upon the beam of el is called vel modulation. In coupled cavity TWT there is a coupling effect between the cavities. Leave a Reply Cancel reply Your email address will not be published.

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An electron beam is formed and focused in the electron gun region to be injected into the slow-wave circuit where it interacts with the propagating RF wave.

Klysstron it passes through the RF circuit, the velocity-modulation in the electron beam changes gradually to density-modulation, and then induces an amplified RF wave at the output section of the slow-wave circuit. Kystron in my personal opinion Water Beteeen is awesome! The signal in the wire causes a magnetic field to be induced in the center of the helix, where the electrons are flowing.

Higher powered helix TWTs usually contain beryllium oxide ceramic as both a helix support rod and in some cases, as an electron collector for the TWT because of its special electrical, mechanical, and thermal properties. What koystron the difference between tube and pipe? The interaction of an electron beam and RF field in the TWT is continuous over the entire length of the circuit. The electron beam is velocity-modulated by the RF field in a gap of the input cavity.


Save my name, email, and website in this browser for the next time I comment. What is the difference between pipes and tubes?

The operation of a TWT is as follows: Archived from the original on The intermediate cavities enhance the electron beam modulation, then an amplified RF signal is induced at the final cavity. The electrons enter a “drift tube” in which faster electrons overtake the slower ones, creating the bunches, after which the electrons pass through another resonant cavity from which the output power is taken.

The RF signal to be amplified is fed into the helix at a point near the emitter end of the tube. The slow-wave structure gives the TWT its wide bandwidth.

Your comments are valuable to us. In TWT, field travels along with the beam. Water tubing you have to wear a type II life jacket by law and snow tubing you don’t have to wear anything.

Pierce[14] and Lester M. Sorry to say; wrong!

Klystrons are of two types as mentioned below: TWT does not have resonant cavity. Tube is measured by outside diameter, pipe is measured by inside diameter.

The Copper industry calls all cooper tubular products “Tubes” butthey designate a “Type”. What is the difference between a pipe and a tube? This will encourage our editors and help us to make our content more better and explanatory.

Difference between pipe and tube? In traveling wave tube, the microwave circuit is non-resonant while Klystron circuit is a resonant type. The figure-2 depicts two cavity klystron. The nominal sizes for pipes and tubes aredetermined differently. Main content starts here.

It is known by this name due to its reflex action of electron beam. The axial phase velocity of the RF wave is delayed by the slow-wave circuit such that it is almost the same velocity as the electron beam.