Expedited EM-driven design optimization of compact dual-band microwave couplers using adaptive response scaling

摘要

Computationally efficient design optimization of dual-band microstrip couplers is demonstrated using an adaptive response scaling (ARS) technique. ARS allows for constructing a fast surrogate of the high-fidelity EM-simulation model of the coupler structure under design using its equivalent circuit as an underlying low-fidelity model. ARS relies on nonlinear frequency/amplitude response scaling that accommodates the discrepancies between the low- and high-fidelity models at the reference design. ARS has been applied for design of a dual-band microstrip coupler with enhanced bandwidth.