Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
a microstrip line between two ground line on the same surface becomes a coplanar wave guide. microstrip's width n its spacing to the ground will affect on its impedance
To get the most accurate answer, you should use a field solver such as the one offered by Polar https://www.polarinstruments.com/. The program is expensive to buy, but you can get a trial copy and/or rent time for as little as $20USD per hour.
There is a free web-based tool that can give you approximate results at:**broken link removed**
The CPW benefits you the small size with scarifying a little insertion loss.
For fixed impendence, wide line means large gap.
The relationship between the width and gap is complicated.
But you can calculate the impendence and loss very easily via line calculator which is available in ADS, if you know the physic parameters of the foundry material.
And you can get accurate characters via EM simulation.
Download the next program (APPCAD)
You will find there what you need.
But you must know something else you can choise Coplanar WaveGuide WITH Ground plane ooooooooor WITHOUT this two they are not the same!!!!
Z0 will not changed by frequency, because the CPW is a wide band element.
if you change the frequency, the skin depth and eletrical wave length will be changed.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
