Optimal design of single-layer solenoid pair-core inductors for high frequency applications

This paper deals with the optimized design of single-layer solenoid air-core inductors for HF applications. The presence of shields or other conductive materials in the neighborhood of the inductor is neglected. Optimum design is obtained with respect to weight, resistance, and losses of inductors. The highest operating frequency is affected by turn-to-turn stray capacitances and it is determined by the first self-resonant frequency. The optimization procedure is formulated as a nonlinear programming problem. A Sequential Quadratic Programming (SQP) algorithm is used for the solution. The influence of different geometrical parameters on the optimum design is highlighted and guidelines for the design procedure are given