Title :
Analysis and circuit modeling of on-chip transformers
Author :
Klemens, Guy ; Bhagat, Maulin ; Jessie, Darryl ; Fredenick, N.
Author_Institution :
QUALCOMM Inc., San Diego, CA, USA
Abstract :
We present circuit topologies and fitting methods that accurately represent on-chip transformers over a frequency sufficient for cellular and PCS circuit analysis. Starting with an S-parameter matrix, obtained through measurement or electromagnetic (EM) simulation, we find an equivalent lumped-element circuit model with minimum fitting error. Consideration is made for the passivity of the model. Examples are shown that include measurements, EM simulation, and equivalent circuit models.
Keywords :
S-matrix theory; S-parameters; cellular radio; circuit simulation; equivalent circuits; inductors; integrated circuit modelling; lumped parameter networks; network analysis; network topology; transformers; EM simulation; PCS; S-parameter matrix; cellular systems; circuit analysis; circuit topologies; electromagnetic simulation; equivalent circuit models; equivalent lumped-element circuit model; fitting error; on-chip inductors; on-chip transformers; Circuit analysis; Circuit simulation; Circuit topology; Electromagnetic measurements; Electromagnetic modeling; Equivalent circuits; Frequency; Personal communication networks; Scattering parameters; Transformers;
Conference_Titel :
Silicon Monolithic Integrated Circuits in RF Systems, 2004. Digest of Papers. 2004 Topical Meeting on
Print_ISBN :
0-7803-8703-1
DOI :
10.1109/SMIC.2004.1398194
