We present an algorithm that determines whether an n-port with given impedance matrix at a set of frequencies can be realised from ideal transformers and multiple instances of a set of linear, time-invariant components (specified by their admittance parameters). The algorithm is based on solving a linear matrix inequality derived using Tellegen's theorem. If the n-port can be realised, the noise figure can be minimized by a choice of cost function that is described. We use as an example an amplifier using realistic RF CMOS components
Published in:
Circuits and Systems I: Regular Papers, IEEE Transactions on
(Volume:54
,
Issue:
4
)
Date of Publication: April 2007