RF Electronics Symbols, Stencils for Office, Visio by RF Cafe
Windfreak Technologies

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 tying 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:


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 RF Engineering Quizzes Notable Quotes App Notes Calculators Education Engineering magazine articles Engineering software Engineering smorgasbord RF Cafe Archives RF Cascade Workbook 2018 RF Symbols for Visio - Word Advertising RF Cafe Homepage Thank you for visiting RF Cafe!
Innovative Power Products Couplers

HI, I Am a New Comer. On Wafer Calibration Question - RF Cafe Forums

RF Cafe Forums closed its virtual doors in 2012 mainly due to other social media platforms dominating public commenting venues. RF Cafe Forums began sometime around August of 2003 and was quite well-attended for many years. By 2010, Facebook and Twitter were overwhelmingly dominating online personal interaction, and RF Cafe Forums activity dropped off precipitously. If the folks at phpBB would release a version with integrated sign-in from the major social media platforms, I would resurrect the RF Cafe Forums, but until then it is probably not worth the effort. Regardless, there are still lots of great posts in the archive that ware worth looking at.

Below are the old forum threads, including responses to the original posts.

-- Amateur Radio
-- Anecdotes, Gripes & Humor
-- Antennas
-- CAE, CAD, & Software
-- Circuits & Components
-- Employment & Interviews
-- Miscellany
-- Swap Shop
-- Systems
-- Test & Measurement
-- Webmaster

J.J. Wang
Post subject: HI, I Am a New Comer. On Wafer Calibration Question
Unread postPosted: Fri Apr 15, 2005 2:53 am

Hi, Everyone,
I am a new comer here. Recently I have been doing research of microstrip line and CPW line. Since I keep testing the my device, the calibration kit for network analyzer was used up pretty quickly.

I am wondering if there is a way to put the calibration lines on my wafer? Does anyone have the samiliar experience like me?



Post subject:
Unread postPosted: Fri Apr 15, 2005 9:53 am

You can put calibration lines on wafer. But most people use a a TRL calibration kit which is G-S-G ( Ground signal ground) 0n alumina, or you can make up your own alumina cal kit. All you are doing is calibrating to probe tips , so it does not matter what you use. Most people do not use the wafer because of the expense, why waste money on transmission line when you can place additional circuits on the wafer. I would make it on alumina, much cheaper. One more thing, when you design your circuit, make sure you have probe points designed in which are compatible with the probes you are using. A good book is written by Scott A. Wartenberg, "RF Measurements of Die and Packages". It is published by Artech House, ISBN 1-58053-273-x. You can get it at Amazon.

Posted  11/12/2012
KR Electronics (RF Filters) - RF Cafe
Werbel Microwave - RF Cafe
LOTUS Communications Systems Modular RF Component Building Blocks - RF Cafe

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

These Are Available for Free