Field Solver for Linux, & Plating Question - RF Cafe Forums
Post subject: Field Solver for Linux, & Plating
Unread postPosted: Sat Aug 14, 2004 7:29 pm
Hello, what a great resource... wish I'd found y'all before.
Designing a microwave circuit in the 2.4GHz range. Looking for
an -accessible- field solver to lay out PCB, meaning one that doesn't
require a PhD in math to use. I know exactly what components I'll
be using, and will design using co-planar waveguide design, but
hope for a precise and easy modelling and interactive analysis of
Looked at Ansoft's two major products, and neither
makes sense to me in practice. Word here seems to be that ADS is
also non-intuitive. We run Linux, and the field-solver would ideally
run on OSS platform, but that's not mandatory. It does though need
to be accessible to a reasonably-intelligent but math-challenged
person. For example, if I want to make a 1/4wave lightning bypass
which blocks at freq of interest; to model length, vs copper core
and plating of silver or gold? Or distances between absorptive switch,
bandpass, and poweramp?
Also as to plating; my brother
(20 yr TI engineer) tells me that gold electroplating is not advisable
at microwave, as microscopically it has a surface of 'tiny hairs'.
That chemical gold-plating is better due to large granule size.
NE1 heard of this?
If neither is advisable, how should traces
be protected from corrosion and allow good skin-effect? Silver has
good properties, but oxydizes horribly.
Thanks in advance.
Mon Sep 27, 2004 12:31 pm
Try Sonnet Lite (downloadable
for *free* from www.sonnetsoftware.com ).
It's limited in
capacity for the free version, but still gives you a good usable
program with excellent accuracy.