A linear inverse space mapping algorithm for microwave design in the frequency and transient domains

An inverse space mapping optimization algorithm for designing linear and nonlinear microwave circuits is presented in this work for the first time. The inverse space mapping follows a piece-wise linear formulation, avoiding the use of neural networks. Microwave circuits in the frequency domain or in the time domain transient-state can be efficiently optimized by applying this algorithm. We contrast our new algorithm with neural inverse space mapping (NISM) optimization. The physical design of a set of CMOS inverters driving an electrically long microstrip line on FR4 illustrates out algorithm.