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 Stencils for Visio RF & EE Shapes for Word Advertising RF Cafe Homepage Thank you for visiting RF Cafe!

Microstrip Substrate Equations

You can work these formulas manually, or download this great free microstrip calculator (TX Line) from NI/AWR.

Equations are given for calculating the effective width and height prior to plugging the dimensions prior to plugging them in to the equations for effective dielectric constant and then for calculating the impedance.

Here is a really nice summary of many controlled impedance line equations, by Rick Hartley.

RF / Microwave PC Board Design and Layout

Be aware that there are many microstrip impedance calculators on the Internet that give sometimes widely varying results. Be sure of which one you finally decide to use. Most claim to use some or all of these formulas these formulas, but I have discovered ones, for instance, that appear to mistakenly substitute 0.4 for 0.04 in the εeff formula for the W/H<1 case.


Effective Width and Height
Microstrip calculation equation - RF Cafe
RF Cafe: Microstrip calculation equation
Microstrip equations - RF Cafe Wavelength Microstrip substrate dimensions for impedance calculation - RF Cafe
Microstrip calculation equation - RF Cafe Phase
RF Cafe: Microstrip calculation equation
for  - RF Cafe Microstrip calculation equation - RF Cafe
Microstrip calculation equation - RF Cafe
RF Cafe: Microstrip calculation equation
  for  RF Cafe: Microstrip calculation equation Microstrip calculation equation - RF Cafe
Microstrip calculation equation - RF Cafe
Anatech Electronics (RF Filters) - RF Cafe ConductRF Precision RF Test Cables - RF Cafe
Res-Net Microwave - 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