The Designer's Guide Community Forum

The Designer's Guide Community Forum
https://designers-guide.org/forum/YaBB.pl
Design >> RF Design >> characteristic impedance calculator
https://designers-guide.org/forum/YaBB.pl?num=1302048042

Message started by vp1953 on Apr 5^th, 2011, 5:00pm

Title: characteristic impedance calculator
Post by vp1953 on Apr 5^th, 2011, 5:00pm

Hi

I am wondering if there are any calculators out there that will provide the width for a 50 ohm transmission line, for different FR4 board thicknesses.

Thank you in advance.

Title: Re: characteristic impedance calculator
Post by apprentice on Apr 5^th, 2011, 8:00pm

AWR microwave office - txline
Agilent ADS - line cal

Title: Re: characteristic impedance calculator
Post by vp1953 on Apr 6^th, 2011, 9:50am

Hi Apprentice,

Thanks very much!

Title: Re: characteristic impedance calculator
Post by loose-electron on Apr 8^th, 2011, 2:06pm

There are online calculators on some PCB sites for this

Go do some searching, its out there

Title: Re: characteristic impedance calculator
Post by rfcooltools.com on Apr 18^th, 2011, 5:50pm

vp1953,

You can use the rfcooltools for this by placing a series t-line component between two ports and playing around with the Height , Er and Width. It is pretty basic. I have not implemented loss tangent yet but that effect is usually a second order effect for most applications.

http://rfcooltools.com