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Abstract #3026

Design of MOSFET Matching Networks Without Inductors

Ke Feng1, Neal Anthony Hollingsworth1, Mary Preston McDougall2, Steven M. Wright1

1Electrical and Computer Engineering, Texas A&M University, College Station, TX, USA; 2Biomedical Engineering, Texas A&M University, College Station, TX

Inductors used in matching networks for MOSFET amplifiers tend to be problematic because of availability and the magnetic field it creates. A design of MOSFET amplifiers matching networks using only capacitors and microstrip transmit lines constructed on standard FR-4 boards is given. By completely eliminating inductors from our matching network, isolation was significantly improved. Once one amplifier is successfully tuned to 50 Ω, additional amplifiers can be constructed using fixed value capacitors. This greatly simplifies constructing a large quantity of amplifiers.