Thanks. That software does the trick. My results are now similar with
the text example.

I downloaded the program and managed to get it running immediately
without documentation. Just need to figure out how to
load the S parameter file for my device now instead of preselecting one
of the models they give in the list.

wrote:
You might want to consider using LTSpice. Oscillators are documented
and the forum support on the Yahoo group is top notch. The program is
available from Linear Technology as a free download (with regular
updates).

URL is: http://www.linear.com/company/software.jsp

Good luck - Roger

"David" wrote in message
...
I downloaded the program and managed to get it running immediately without
documentation. Just need to figure out how to
load the S parameter file for my device now instead of preselecting one of
the models they give in the list.

SPICE doesn't know anything about S parameters... you need a linear RF
simulator to deal with them (and guess what? Randy Rhea, the guy who wrote
your book, was the original designer of Genesys -- that's where all the
screenshots in the book come from). With straight SPICE, the traditional
approach is to curve-fit a rational polynomial to the S parameters and then
use the polynomial directly (most simulators these days have a "Laplace"
operator) or systematically turn it into a bunch of controlled sources along
with RLCs that mathematically implement the same thing.

I believe that RFSim99 might work for you here...

---Joel Kolstad