Electromagnetic/Circuit co-optimization of lumped component and physical layout parameters using generalized layout components

This paper describes the concept of a generalized parametric layout component which enables one to simultaneously optimize the physical layout variations together with lumped passive and active component parameters. This is realized by a seamless integration of a electromagnetic simulator within a circuit simulation and optimization tool. The electromagnetic S-parameter model is generated dynamically for each set of layout component parameters, as selected by the optimizer. An electromagnetic model database keeps track of the generated S-parameter models for later reuse. This concept is illustrated in the design of an RF board low noise amplifier circuit.