Electronics World articles Popular Electronics articles QST articles Radio & TV News articles Radio-Craft articles Radio-Electronics articles Short Wave Craft articles Wireless World articles Google Search of RF Cafe website Sitemap Electronics Equations Mathematics Equations Equations physics Manufacturers & distributors Engineer Jobs LinkedIn Crosswords Engineering Humor Kirt's Cogitations Engineering Event Calendar RF Engineering Quizzes USAF radar shop Notable Quotes App Notes Calculators Education Engineering Magazines Engineering magazine articles Engineering software Engineering smorgasbord RF Cafe Archives RF Cascade Workbook 2018 RF Stencils for Visio RF & EE Shapes for Word Advertising RF Cafe Homepage Sudoku puzzles Thank you for visiting RF Cafe!
Exodus Advanced Communications

Reader Letter: Waveguide
May 4, 1964 Electronics Magazine Article

May 4, 1964 Electronics

May 4, 1964 Electronics Cover - RF Cafe[Table of Contents]

Wax nostalgic about and learn from the history of early electronics. See articles from Electronics, published 1930 - 1988. All copyrights hereby acknowledged.

Impossible Trident March 1965 "Mad" magazine - RF CafeThis letter submitted to Electronics magazine by reader Fred Standish really should have been saved for the next April issue. He writes concerning an attempt to mathematically describe the three-port circular-to-rectangular waveguide transition for the pictured configuration. If I remember correctly, the first time I saw that optical illusion was sometime in the early 1970s. The drawing showed Alfred E. Neuman (the red-haired, freckled-faced "Me Worry? guy from Mad magazine) attempting to don a pair of pants (a triplet of pants in that case?) sewn to resemble the three-legged configuration - known unofficially as the "Impossible Trident." I was in my early teens at the time and though it was awfully clever. After doing a little research, I found that the first instance of the Impossible Trident in Mad magazine was on the cover of the March 1965 issue (#93). The Impossible Trident was created by D. H. Schuster, an American psychologist, who based it on an advertisement he saw in an aviation journal. It was first published in The American Journal of Psychology in 1964, although some challenge the assertion since everyone was glomming onto the figure at the time..

Reader Letter: Waveguide

Reader Letter: Waveguide, May 4, 1964 Electronics Magazine - RF CafeHere at Litchfield we have been working to establish the design and performance factors for a three-pitched femto waveguide. We are trying to establish the relationship between the circular cylinders at left and the rectangular-prism resonant cavity. So far we have had flat response through the top cylinder and low-pass response towards the bottom cylinder. The mode lattice has been difficult to establish for the left center cylinder, although it looks better than a Moreno cross guide coupler. Even and odd-mode impedance of parallel slab line has given us trouble. Where can I find data that will establish the susceptance of symmetrical irises?

Fred Standish

Litchfield, Conn.

• Try pulling a few more legs.



Posted May 27, 2019

Qorvo / Custom MMIC CMD242K4 GaAs Distributed Amplifier - RF Cafe
Windfreak Technologies Berkeley Nucleonics Webinar Buying Signal Generator - RF Cafe
About RF Cafe
Kirt Blattenberger - RF Cafe Webmaster
Copyright: 1996 - 2024
    Kirt Blattenberger,

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while typing up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.

My Hobby Website:  AirplanesAndRockets.com


Please Support RF Cafe by purchasing my  ridiculously low−priced products, all of which I created.

These Are Available for Free