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A design method for lumped broadband MMIC matching networks with semiuniform frequency-dependent losses

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3 Author(s)
Lin, Q. ; Dept. of Electron. Eng., Tianjin Univ., China ; Aghvami, H. ; Robertson, I.

A design method for broadband MMIC matching networks which consist of lumped inductors and capacitors is presented. Based on a fictitious transformation between the lossy network and the lossless one, 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 matching network can be synthesized. Since only the complexity of the matching network needs to be specified, the advantage of the real frequency technique of B.S. Yarman and H.J. Carlin (1982) is retained. In this design procedure the frequency-dependent losses of lumped elements can be considered. Thus the actual gain response tends to coincide with the desired performance more than when the element losses are neglected. An example is given to show the application of the method to broadband GaAs FET amplifier design

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:41 ,  Issue: 5 )