Memetic optimization algorithm applied to design microwave amplifier for the specific gain value constrained by the minimum noise over the available bandwidth

In this work, the neural performance and fuzzy logic data sheets of the transistor are used to determine the feasible design target space in the optimization of a microwave amplifier. The compatible (Noise F , Input VSWR V i , Gain G T ) triplets and their ( Z S , Z L ) terminations of a microwave transistor are exploited for an amplifier design with the minimum noise F min ( f ), required gain G Treq ( f ), and a low input VSWR V i over the available bandwidth. The multi‐objective design procedure is obtained from Z S ( f ), Z L ( f ) terminations with the unit‐elements and short‐circuited stubs in the L+L configurations and memetic optimization algorithm is successfully implemented as an optimization tool. A typical design example is given with its challenging performance in the simple L+L configurations realizable by the microstrip line technology. © 2010 Wiley Periodicals, Inc. Int J RF and Microwave CAE, 2010.