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Tank circuits: achieving maximum Q
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March 23rd 04, 12:28 PM
Paul Burridge
Posts: n/a
On 22 Mar 2004 22:01:47 -0800,
(Tom Bruhns) wrote:
Of course, maybe you don't need such a high Q, Paul. Qu of 30 is
quite reasonable for small SMT RF inductors, at least the type I use.
In the following list, "series" means in series from the gate output
to the next gate input, in order, and "shunt" means shunt to ground at
that point. Anyway, try this (build it or SPICE it or RFSim99
it...add resistors to any simulation to account for the Qu. I'd
suggest 3 ohms series and 12k ohms shunt for each 1.8uH.)
Thanks, Tom. I've simulated the filter and posted the plot result to
abse. Looks promising. See if it meets your expectations....
p.
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