Qn. Lin et al., A DESIGN METHOD FOR LUMPED BROAD-BAND MMIC MATCHING NETWORKS WITH SEMIUNIFORM FREQUENCY-DEPENDENT LOSSES, IEEE transactions on microwave theory and techniques, 41(5), 1993, pp. 873-876
A new design method for broad-band MMIC matching networks, which consi
st of lumped inductors and capacitors, is presented in this paper. Bas
ed on the fictitious transformation between the lossy network and the
lossless one [6] the transducer power gain (TPG) of the lossy network
is calculated using impedance matrix and transmission parameter matrix
methods. Then, on the basis of the result of TPG optimization, the ma
tching network can be synthesized. Since only the complexity of the ma
tching network needs to be specified, so the ad-vantage of the ''real
frequency technique'' [5] is retained. In this design procedure the fr
equency-dependent losses of lumped elements can be considered. Thus th
e actual gain response tends to coincide with the desired performance
more than when the losses of elements are neglected. An example is giv
en to show the application of the new method to broad-band GaAs FET am
plifier design.