Title :
Concentric Ring Model of Monolithically Integrated Circular Spiral Transformers
Author :
Rejaei, B. ; Ormando, N. ; Burghartz, J.N.
Author_Institution :
Microwave Component Group, Laboratory of Electronic Components, Technology, and Materials (ECTM), DIMES, Faculty of Information Technology and Systems, Delft University of Technology, Feldmannweg 17, 2628 CT Delft, The Netherlands. Email: b.rejaei@its.tud
Abstract :
A novel non-empirical model based on the concentric ring approximation is presented for circular spiral transformers. The model takes into account substrate RF loss and non-uniform distribution of current density across the conductors. Results for several stacked spiral transformers arc compared with experimental data. Good agreement is demonstrated between simulated and measured values of transformer ratio, coupling constant, and efficiency.
Keywords :
Conductors; Current density; Dielectric losses; Dielectric substrates; Impedance; Inductors; Integrodifferential equations; Spirals; Transformers; Transmission line matrix methods;
Conference_Titel :
Microwave Conference, 2001. 31st European
Conference_Location :
London, England
DOI :
10.1109/EUMA.2001.339063
