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
Whisper Shouts Flexibility Sacrificed in Pursuit of Volume
Imagination is moving away from software defined radio and back...
eetimes.com
EEVblog #647 – Agilent 53131A Frequency Counter Oven Upgrade
Dave upgrades his HP/Agilent 53131A frequency counter with an ovenised...
eevblog.com
EUV Results Bogus, Says Analyst
A veteran industry watcher and an IBM expert are at...
eetimes.com
PCIe Disk Drive Needs New Tests?
On the edge of deployment, it's time to create a...
eetimes.com
Has Sharp Dug Itself Out?
Helped by demand for small and midsized LCD panels, Sharp...
eetimes.com
The Coming Revolution in Desktop Pick-and-Place Machines
In the case of today's super-small components, hobbyists desperately need...
eetimes.com
Emulation: Have It Your Way
'Have it your way' sounds like just the right strategy...
eetimes.com
Keysight Technologies Opens Its Doors
The former Electronic Measurement Group of Agilent Technologies has officially...
eetimes.com
Engineers Solve Analog/Digital Problem, Invent Creative Expletives
An analog engineer and a digital engineer join forces, use...
eetimes.com
Friday Quiz: EMC & ESD
Get your EMC/ESD head in gear for the 2014 EMC...
eetimes.com
Is Tesla's Gigafactory a Gigablunder for Panasonic?
Panasonic signed a deal with Tesla on a large-scale battery...
eetimes.com
Android, China Rise in Smartphones
Nearly 300 million smartphones shipped worldwide during the second quarter...
eetimes.com
Movidius Vision Processing Unit Enters 2nd Generation
Movidius announces a new chip and lays claim to the...
eetimes.com
Q'comm Shares a Wearable Strategy
The future of ubiquitous wearables will require more innovation than...
eetimes.com
3D Printing in Space
Among the technological advances that will make our dreams of...
eetimes.com
Sony, Panasonic, Japan Display Plan OLED Joint Venture
Sony Corp., Panasonic Corp., and Japan Display Inc. are working...
eetimes.com
Sony, TSMC Win Award for Silicon-Plastic Process Development
Sony and TSMC's paper describing a process to integrate a...
eetimes.com
What's the Best Traveling Toolkit?
When one is travelling, it can be really handy to...
eetimes.com
Power Week: Google's $1M Power Inverter Challenge - How Small Is Possible?
This week, Google, along with the IEEE, is offering a...
eetimes.com
Teardown: Oculus Rift Dev Kit 2 by iFixit
Using a Samsung Galaxy Note 3 display, Oculus Rift DK2...
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 +