Automatic Synthesis for On-chip Transformer

Abstract

The article introduces an automatic synthesis method for on-chip transformer from electromagnetic (EM) simulations. Using this method, a transformer library, parametric layout and scalable model are generated quickly, then a fast search through the transformer space produces an optimal design. We used this method to design transformer for common wireless application. The synthesis method of transformer includes various constraints such as inductance, quality factors, and coupling coefficients to ensure that the synthesis results meet expectations, and the accuracy deviation is within 5%.