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2011 Dipl.-Ing. (FH) Christian Wolff, www.radartutorial.eu. 3. Klystron Amplifier. Klystron amplifiers are high power microwave vacuum tubes They are used in some coherent radar transmitters as power amplifiers. Klystrons make use of the transit-time effect by varying the velocity of an electron beam. A klystron uses special
21 Jan 2004 In this section and in the next, we present the theory behind the principal formulae used in the design of amplifier klystrons. The intent is to provide the student or engineer with the assumptions used in their derivations so that he or she can use them correctly. These assumptions result in the approximations
Klystron Oscillator. A klystron is a vacuum tube that can be used either as a generator or as an amplifier of power, at microwave frequencies. PH0101 Unit 2 Lecture 6. 3. Two cavity Klystron Amplifier. PH0101 Unit 2 Lecture 6. 4. Applications. As power output tubes. in UHF TV transmitters; in troposphere scatter transmitters
the output circuit. Relatively low gains, by usual radio engineering standards, would be preferable to instability and the need for neutraliza- tion of feedback. Among the klystrons and microwave triodes in the 3000 Me/see fre- quency range there are no commercially available amplifiers whose per- formance approaches
MULTICAVITY POWER KLYSTRON AM- PLIFIERS.— The simple, two-cavity power klystron amplifier is not capable of high-gain or high-power output, or suitable efficiency. However, with the addition of intermediate cavities and other physical modifications, the basic two-cavity klystron may be converted into a multicavity
Consider a klystron consisting of two cavities, a. “buncher" and a “catcher," both gridded. (Fig.1). Let a beam of electrons, which has been accelerated by a potential Vo to a velocity uo, traverse the first pair of grids, where it is acted upon by an rf voltage V1sin?t, reduced by a “coupling coefficient" M. The latter modifies the
Klystron Amplifier. Klystron amplifiers are high power microwave vacuum tubes. Klystrons are velocity-modulated tubes that are used in some radar equipments as amplifiers. Klystrons make use of the transit-time effect by varying the velocity of an electron beam. A klystron uses one or more special cavities, which modulate
Klystron Amplifier Scalings. Cathode current density: f 0. Focusing field strength: B~? q. -1. Output. Cavity Gap. Fields ~f 0. Circuit losses: f ?. Beam area convergence: f 0. Beam Power & Output Power: f -2. Tube length: ? q. ~V3/2
Stanford Linear Accelerator Center has elected to maintain its own klystron engineering and manufacturing accelerator and its 21 klystron amplifiers were built at the University's Microwave Laboratory. The SLAC .. gun is part of the input cavity circuit and the beam current is a function of the RF drive, as it is in a tetrode.
gitudinal amplifier. The amplifier consists of an electron beam periodically coupled to cavity gaps placed along its length. Except for the electron beam, the cavities are electromagnetically uncoupled. We shall apply this theory to the gain analysis of a multiple-cavity klystron. Unlike our previous analysis, the drift regions are
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