two cavity klystron amplifier operation ppt
#1

I want to know about wo cavity klystron amplifier
Reply
#2

two cavity klystron amplifier operation ppt

Abstract

A klystron uses special cavities which modulate the electric field around the axis the tube. In the middle of these cavities, there is a grid allowing the electrons to pass. The first cavity together with the first coupling device is called a “buncher”, while the second cavity with its coupling device is called a “catcher”.The direction of the field changes with the frequency of the “buncher” cavity. These changes alternately accelerate and decelerate the electrons of the beam passing through the grids. The area beyond the buncher grids is called the “drift space”. The electrons form bunches in this area when the accelerated electrons overtake the decelerated electrons.
The function of the “catcher” cavity is to absorb energy from the electron beam. The “catcher” grids are placed along the beam at a point where the bunches are fully formed. The location is determined by the transit time of the bunches at the natural resonant frequency of the cavities (the resonant frequency of the catcher cavity is the same as the buncher cavity).The collector collect the energy of the electron beam and change it into heat and X radiation.Klystron amplification, power output, and efficiency can be greatly improved by the addition of intermediate cavities between the input and output cavities of the basic klystron. Additional cavities serve to velocity-modulate the electron beam and produce an increase in the energy available at the output.

Introduction

A klystron is a specialized linear-beam vacuum tube, invented in 1937 by American electrical engineers Russell and Sigurd Varian, which is used as an amplifier for high radio frequencies, from UHF up into the microwave range. Low-power klystrons are used as oscillators in terrestrial microwave relay communications links, while high-power klystrons are used as output tubes in UHF television transmitters, satellite communication, and radar transmitters, and to generate the drive power for modern particle accelerators.In a klystron, an electron beam interacts with radio waves as it passes through resonant cavities, metal boxes along the length of a tube.The electron beam first passes through a cavity to which the input signal is applied. The energy of the electron beam amplifies the signal, and the amplified signal is taken from a cavity at the other end of the tube. The output signal can be coupled back into the input cavity to make an electronic oscillator to generate radio waves. The gain of klystrons can be high, 60 dB (one million) or more, with output power up to tens of megawatts, but the bandwidth is narrow, usually a few percent although it can be up to 10% in some devices.A reflex klystron is an obsolete type in which the electron beam was reflected back along its path by a high potential electrode, used as an oscillator.The name klystron comes from the stem form κλυσ- (klys) of a Greek verb referring to the action of waves breaking against a shore, and the suffix -τρον ("tron") meaning the place where the action happens.The name "klystron" was suggested by Hermann Fränkel, a professor in the classics department at Stanford University when the klystron was under development.
Reply

Important Note..!

If you are not satisfied with above reply ,..Please

ASK HERE

So that we will collect data for you and will made reply to the request....OR try below "QUICK REPLY" box to add a reply to this page
Popular Searches: 2 cavity klystron derivation, two cavity klystron amplifier operation ppt, seminar projects on klystron, advantases of klystron, klystron tube ppt, ppt on reflex klystron, working two cavity klystron pdf,

[-]
Quick Reply
Message
Type your reply to this message here.

Image Verification
Please enter the text contained within the image into the text box below it. This process is used to prevent automated spam bots.
Image Verification
(case insensitive)

Possibly Related Threads...
Thread Author Replies Views Last Post
  to estimate the charge induced on each one of the two identical styrofoam 2 675 07-06-2016, 01:43 PM
Last Post: Guest
  klystron microwave test bench block diagram explanation 1 706 03-06-2016, 04:36 PM
Last Post: dhanabhagya
  matching two fingerprint images source code using javascript 1 589 03-06-2016, 04:15 PM
Last Post: dhanabhagya
  four quadrant operation of dc motor using dual converter ppt 1 846 20-05-2016, 04:03 PM
Last Post: dhanabhagya
  future scope of four quadrant motor operation 1 1,000 10-05-2016, 11:38 AM
Last Post: dhanabhagya
  seminar report for battery two wheelers pdf 1 598 04-05-2016, 12:47 PM
Last Post: dhanabhagya
  seminar report for battery two wheelers pdf 1 525 04-05-2016, 12:47 PM
Last Post: dhanabhagya
  trace two wheeler vehicle owner details 1 457 02-05-2016, 11:08 AM
Last Post: dhanabhagya
  two factor authentication seminars report pdf file download 1 774 25-04-2016, 12:33 PM
Last Post: dhanabhagya
  journal on pneumatic gear shifting for two wheeler 1 501 25-04-2016, 09:47 AM
Last Post: dhanabhagya

Forum Jump: