Quantcast The Magnetron

Share on Google+Share on FacebookShare on LinkedInShare on TwitterShare on DiggShare on Stumble Upon
Custom Search
 
  
 
2-23 electron gun end of the tube toward the collector is not used in the bwo. Instead, the bwo extracts energy from the electron. beam by using a backward wave that travels from the collector toward the electron gun (cathode). Otherwise, the electron bunching action and energy extraction from the electron beam is very similar to the actions in a twt. The typical bwo is constructed from a folded transmission line or waveguide that winds back and forth across the path of the electron beam, as shown in figure 2-16. The folded waveguide in the illustration serves the same purpose as the helix in a twt. The fixed spacing of the folded waveguide limits the bandwidth of the bwo. Since the frequency of a given waveguide is constant, the frequency of the bwo is controlled by the transit time of the electron beam. The transit time is controlled by the collector potential. Thus, the output frequency can be changed by varying the collector voltage, which is a definite advantage. As in the twt, the electron beam in the bwo is focused by a magnet placed around the body of the tube. Figure 2-16.—Typical bwo. Q-26.   What is the primary use of the twt? Q-27.   The magnet surrounding the body of a twt serves what purpose? Q-28.   How are the input and output directional couplers in a twt connected to the helix? Q-29.   What relationship must exist between the electron beam and the traveling wave for bunching to occur in the electron beam of a twt? Q-30.   What structure in the twt delays the forward progress of the traveling wave? The Magnetron The MAGNETRON, shown in figure 2-17A, is a self-contained microwave oscillator that operates differently from the linear-beam tubes, such as the twt and the klystron. Figure 2-17B is a simplified drawing of the magnetron. CROSSED-ELECTRON and MAGNETIC fields are used in the magnetron to produce the high-power output required in radar and communications equipment.


Electrical News
2014: A Monumental Year for Cyber Attacks
As consumer and industrial IoT adoption rises, so does the...
eetimes.com
Brief Takes: Tech Stories You Should Know About
Here are 5 quick reads to catch you up with...
eetimes.com
Co-Robots Working Alongside People
Robots can work alongside people helping them without danger of...
eetimes.com
IoT Landscape Needs Mapping
In the first of a series of blogs on the...
eetimes.com
Analog, Embedded Drive TI Upwards in 2014
Texas Instruments Inc. has reported a net income of $825...
eetimes.com
Are TSMC, UMC Affected By Taiwan's Water Shortages?
Rainfall in Taiwan is at the lowest level since 1947....
eetimes.com
Disturbed by Superhuman?
How much of this advancement toward "superhuman" abilities enabled by...
eetimes.com
Maxim Exits Consumer MEMS, Touch Sensors
Maxim Integrated Products Inc. has decided to get out of...
eetimes.com
Op-Amp Measurements Explained
In a series of four articles, David R. Baum and...
eetimes.com
Very Tasty Solar Media Player & Power Bank
The SP-5000 solar-powered power bank and media player also offers...
eetimes.com
New EDA Company, AtaiTec, Announces Next-Gen Signal Integrity Suite
AtaiTec has developed a suite of simple, accurate, and cost-effective...
eetimes.com
Modern Design Tools Facilitate Tuning DDR4 Signal Paths
Adjusting the lengths of signal tracks so that the delays...
eetimes.com
Intel, Microsoft Improve Odds for Augmented Reality
Microsoft unveils HoloLens and Intel invests in AR glasses. Are...
eetimes.com
10 Eye-Opening IC Insights
The semiconductor industry will step ahead at a decent 7%...
eetimes.com
EEVblog #708 – Free Energy BULLSHIT!
Are the laws of physics being bent? Dave explains why...
eevblog.com
Increased Functionally Drives Flash Array Adoption
Early all-flash arrays were dedicated to a single application, but...
eetimes.com
New Technology Detects Cyberattacks By Power Consumption
Startup's "power fingerprinting" approach catches stealthy malware within milliseconds in...
eetimes.com
Imagination Sees Life Beyond Games
Imagination Technologies continues to hedge its bets on graphics-based processing,...
eetimes.com
Motion Control Comes to Masses with TI Launchpad
Prototyping of brushless motor control systems has required specialized expertise,...
eetimes.com
 


Privacy Statement - Copyright Information. - Contact Us

comments powered by Disqus

Integrated Publishing, Inc.
9438 US Hwy 19N #311 Port Richey, FL 34668

Phone For Parts Inquiries: (727) 755-3260
Google +