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Topic: Traveling wave tube


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In the News (Fri 18 Dec 09)

  
  Patents in Class 315/3.6
A crossed-field amplifier tube is constructed in which there is substantially no direct RF coupling between the output of the slow-wave structure on the anode and the input of the slow-wave structure of the cathode to thereby obtain a ca...
A coupled cavity travelling wave tube of the space harmonic type is provided wherein the interaction gaps in successive cavities are alternately offset towards the input end of the slow wave structure and towards the output of the slow w...
A traveling wave tube made in accordance with this invention wherein the folded waveguide interaction circuit and the input/output transitions to standard waveguides are made of a single piece of metal such as oxygen-free, high conductiv...
www.freepatentsonline.com /CCL315-3.6.html   (2096 words)

  
  Radar - Wikipedia, the free encyclopedia
A transmitter emits radio waves, which are reflected by the target, and detected by a receiver, typically in the same location as the transmitter.
The use of radio waves to detect "the presence of distant metallic objects via radio waves" was first implemented in 1904 by Christian Hülsmeyer, who demonstrated the feasibility of detecting the presence of ships in dense fog and received a patent for radar as Reichspatent Nr.
Radar waves scatter in a variety of ways depending on the size (wavelength) of the radio wave and the shape of the target.
en.wikipedia.org /wiki/Radar   (4710 words)

  
 The Traveling-Wave Tube
The TRAVELING-WAVE TUBE (twt) is a high-gain, low-noise, wide-bandwidth microwave
The physical construction of a typical twt is shown in figure 2-13.
transmission line is an rf wave which travels on the line from input to output.
www.tpub.com /content/neets/14183/css/14183_100.htm   (343 words)

  
 What is traveling-wave tube? - a definition from Whatis.com - see also: TWT
A traveling-wave tube (TWT) is a specialized vacuum tube used in wireless communications, especially in satellite systems.
When the tube is properly operating, some of the energy from the electrons is imparted to the signal in the coil.
A TWT can be made to function as an oscillator by coupling some of the output back into the input.
whatis.techtarget.com /definition/0,,sid9_gci284003,00.html   (357 words)

  
 Delay line having coupled cavities for a traveling-wave tube and a traveling-wave tube equipped with said line - Patent ...
A delay line for a traveling-wave tube according to claim 1, wherein said coupling impedance of decreasing value is obtained by a progressive increase in the direction of propagation of the electron beam of the thickness of the walls which are common to two cavities.
Coupled-cavity delay lines are more especially employed in traveling-wave tubes in which they produce an interaction between an electron beam which passes along the axis of the line and an electromagnetic wave which travels along the line.
When conditions of synchronism of the wave and of the beam are satisfied, the electrons impart energy to the electromagnetic wave.
www.freepatentsonline.com /4431944.html   (1326 words)

  
 Traveling Wave Tube (TWT) Amplifiers for EMC Testing
These traveling wave tube amplifiers are ultra wide-band with automatic fault recycle, user-friendly microprocessor-controlled logic with integrated computer interface and digital metering.
Each TWT power amplifier is backed by over two decades of TWT experience and CPI's worldwide 24-hour customer support network.
Please contact us or request information if you have questions regarding our travelling wave tube (TWT) Amplifiers or if you require a custom design.
www.djmelectronics.com /twt-amplifiers.html   (117 words)

  
 Bias Adjustment On Tube Amplifiers   (Site not responding. Last check: )
DISCLAIMER: LORD VALVE (W. tube amplifiers, tube amps, tube amp, tube amplifier, tube...
...tube amplifier (guitar and general audio) equipment part-time for cost of parts only, (no labor), including recapping, bias adjustment...
Bias adjustment of each tube was mere child's play - the trim pots and test points are conveniently situated on top of the chassis.
www.battlecreekyankees.com /bias-adjustment-on-tube-amplifiers.html   (201 words)

  
 L-3 Electron To Supply S-band Traveling Wave Tube Amplifiers To Space Systems/Loral
L-3 Electron To Supply S-band Traveling Wave Tube Amplifiers To Space Systems/Loral
L-3 Communications has announced that its Electron Technologies subsidiary has received a contract valued at over $20 million from Space Systems/Loral (SS/L) to provide S-band Traveling Wave Tube Amplifiers (TWTAs) for two communications satellites being built for ICO Satellite Management and Terrestar Networks.
L-3 ETI will deliver a flight set of 130-watt S-band TWTAs for the ICO program and a flight set of 100-watt S-band TWTAs for the Terrestar program.
www.spacedaily.com /news/milspace-comms-05zzzx.html   (278 words)

  
 Olympus
Its platform and payloads were built to test a range of space hardware and components, which would be necessary elements of future telecommunications satellites in Europe.
As such, it demonstrated new concepts in orbit, such as steerable spot beams, 20-30 GHz repeaters, high-speed switchable multiplexers, and very high power traveling wave tube amplifiers.
A dust grain from the Perseid meteor stream was blamed for ending the mission.
www.daviddarling.info /encyclopedia/O/Olympus.html   (195 words)

  
 CHRONO-2
Harold D. Arnold, American physicist, and Irving Langmuir, an American chemist, improved the triode tube developed by Lee De Forrest, by increasing the amount of vacuum in the tube.
Rudolph Kompfner, an Austrian-American scientist, invents the traveling wave tube.
The electrostatic tube is used for computer memory, based on work done by F. Williams.
www.computermuseum.li /Testpage/01HISTORYCD-Chrono1.htm   (14577 words)

  
 Downloads
New Traveling Wave Tube Amplifiers From AR Deliver 125 Watts Across 18 - 40 GHz Frequency Band
To Its Family Of Traveling Wave Tube Amplifiers
New Dual Band Traveling Wave Tube Microwave Amplifier Simulates 600V/m Radar Pulse To Meet GM And Ford Specs
www.amplifiers.com /html/50000.asp?S=4   (559 words)

  
 Triton Services Inc., Electron Technology Division - Traveling Wave Tube Amplifiers
Triton Services Inc., Electron Technology Division - Traveling Wave Tube Amplifiers
Together with the TWT, a user friendly TWT amplifier (TWTA) is formed.
Please contact a Triton ETD sales representative for your total solution.
www.tritonetd.com /twtamplifiers.html   (122 words)

  
 ☞ vacuum | vacuum
BEIRUT, Aug 22 (Reuters) - It could take three months to fill the post-war "security vacuum" in southern Lebanon and even unintended breaches of the truce
Not traveling any further than Pennock or Gravina means living in a vacuum?
Maybe living in a vacuum could mean wanting only to do EVERYTHING from a computer?
www.all-vacuum.info /vacuumtube/the-thermionic-vacuum-tube-physics-and...   (286 words)

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