On Tue, Apr 29, 2025 at 06:28 AM, Brian Beezley wrote:
Something else I've wondered about. This is an 820 pF capacitor from 50 MHz to
4 GHz. There's not much to see. Would a magnification function be helpful? Or
do people just not worry about detail in this kind of plot?
Yes, magnification in particular around the Zo of the chart is quite useful and that is a feature available
on several simulators. Conversion from S to mS or even uS is also an automatic process to improve readability.
On the Z and Y chart. To clarify, Brian, they are OVERLAID. Both appear as a single chart. A toggle permits Z to be on/off and then
further toggle permits Y to be on/off while an additional toggle permits both ON.
Fundamental to LC matching is the arithmetic to convert from series Z to equivalent parallel Y. This can be accomplished
on a single Z chart. However, it is facilitated by displaying both charts Z and Y at the same time so that the SHUNT (Y) movement
is obtained from the admittance chart and SERIES (Z) movement is obtained from the impedance chart. By movement, I mean along
reactance or susceptance contours.
