Custom Search
Over 9,000 pages indexed!
Your Host
Click here to read about RF CafeKirt
Blattenberger

... single-handedly
redefining what an
engineering website should be.

View the YouTube RF Cafe Intro Video Carpe Diem!
(Seize the Day!)

5CCG (5th MOB):
My USAF radar shop

Hobby & Fun

Airplanes and Rockets:
My personal hobby website

Equine Kingdom:
My daughter Sally's horse riding business website - lots of info

Doggy Dynasty:
My son-in-law's dog training business

•−•  ••−•    −•−•  •−  ••−•  •
RF Cafe Morse Code >Hear It<
Job Board
About RF Cafe©
RF Cafe E-Mail
Product & Service
Directory
Engineering
Jobs
Personally Selected
Manufacturers
Employers Only
(no recruiters)

The Doppler Toppler
Kirt's Cogitations™ #74

These original Kirt's Cogitations™ may be reproduced (no more than 5, please) provided proper credit is given to me, Kirt Blattenberger.

Please click here to return to the Table of Contents.

   Cog·i·ta·tion [koj-i-tey'-shun] – noun: Concerted thought or
                                        reflection; meditation; contemplation.
   Kirt [kert] – proper noun: RF Cafe webmaster.


< Previous                      Next >


The Doppler Toppler

Doppler Toppler - that's what it's discoverers are calling it. Physicists in England have demonstrated a form of motion-induced frequency shift that is opposite of Doppler. This inverse Doppler was first predicted in the 1940s, and produces a frequency shift 100k times greater than Doppler. A contraption comprised of a bank of capacitors and inductors is pulsed with up to 100 A of current, which sets up the necessary conditions for Doppler inversion. What basically is a case of really bad VSWR creates a series of multiplying wavefront compressions yield frequency factors of 20 or greater during each boundary reflection. Multiple passes rapidly generate very high shifts. The terahertz frequencies produced by this method are planned for use in medical imaging, security scanning and many other applications.

RF Cafe Software

RF Cascade Workbook
RF Cascade Workbook is a very extensive system cascaded component Excel workbook that includes the standard Gain, NF, IP2, IP3, Psat calculations, input & output VSWR, noise BW, min/max tolerance, DC power cauculations, graphing of all RF parameters, and has a graphical block diagram tool. An extensive User's Guide is also included. - Only $35.
RF system analysis including
frequency conversion & filters

Smith Chart™ for Excel
Smith Chart™ for Visio
RF & EE Symbols Word
RF Stencils for Visio

A Disruptive Web Presence

Custom Search
Over 9,000 pages indexed!
Read About RF Cafe
Webmaster: Kirt Blattenberger
KB3UON

Product & Service Directory
Personally Selected Manufacturers

RF Cafe T-Shirts & Mugs
Calculator Workbook
RF Workbench
Please Support My Advertisers