On Mon, May 12, 2025 at 01:47 PM, alan victor wrote:
The Q=2, 3, etc.... where the R,X ratio is 2,3, etc... and this facilitates
the constructs for matching over a desired band when a load model is imported
to the chart.
When making a graphical multi-section matching network solution, the constant-Q curves guide your component choices, to avoid unnecessarily constraining the bandwidth.
The idea is to have each intermediate matching step wind up on/near the same Q circle. Having any steps with higher Q than necessarily will constrict the bandwidth. Having steps of lower Q will necessitate more sections which will increase the loss. Or, if the bandwidth need is narrow you can use high-Q sections for some "free" bandpass filtering.
73, Don N2VGU
Donald S Brant Jr