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Efficient numerical CAD technique for RF and microwave amplifiers

✍ Scribed by E. Kerherve; P. Jarry; P. M. Martin

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
302 KB
Volume
8
Category
Article
ISSN
1096-4290

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✦ Synopsis

The real frequency technique RFT is an efficient numerical method to design the matching networks of microwave active circuits. It provides several advantages over most of the usual techniques. By directly including measured scattering and noise parameter data, it does not require any rational functions or circuit models. Moreover, a predetermined matching circuit topology is not necessary. The described method also allows the design of stability-guaranteed broadband circuits when employing potentially unstable transistors. With the Levenberg-Merquardt algorithm, the RFT can be applied to simultaneously optimize transducer power gain, input and output VSWRs, noise figure, and group delay of a multistage microwave active circuit. Applications as different as low-noise amplifier, active filter, or broadband amplifier are possible.

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