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MSG and stability - RF Cafe Forums
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jkfelix
Post subject: MSG and stability Posted: Sun Feb 12, 2006
11:27 am
Lieutenant
Joined: Thu Feb 09, 2006 5:29 am
Posts: 1
Hi guys,
My transistor is the NE4210S01, bias point
VDS = 2 V, ID = 10 mA and at 6 GHz.
I'm doing an availabe gain
(Ga) design, keeping my load complex conj of the output reflection,
and draw the constant gain circles in the GammaS plane:
I see
that the gain circle corresponding to the MSG has some parts inside
the stable region. Picking values of GammaS so that I have higher gain
than the MSG, I get some GammaL according to the perfect match at the
output - and this is also in the stable region! So I have stability
both at the input and the output, even though choosing points on having
higher gain than the MSG!
Can this be, and if so - why oh why?
sincerely,
RF-student
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me a job!
Posted 11/12/2012
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