Title :
Broadband compact model for on-chip mm-wave transformers and baluns with emphasis on capacitive coupling effects
Author :
Tang, Yang ; Ye, Zuochang ; Wang, Yan
Author_Institution :
Inst. of Microelectron., Tsinghua Univ., Beijing, China
Abstract :
Distributed capacitive coupling effects in the transformers and baluns at millimeter-wave band are investigated in this paper and a lumped coupling branch with parameter estimation method is proposed. The accuracy near and beyond resonance frequency of the new equivalent circuit model is greatly improved. Different types of transformers and baluns with various geometries are fabricated by 0.13um RF CMOS process. The simulated results agree quite well with all the experiments in the whole measured regime up to 40GHz. And the proposed model is further validated by EM simulations up to 80GHz, indicating that it captures the physical essence behind correctly.
Keywords :
CMOS integrated circuits; baluns; equivalent circuits; millimetre wave integrated circuits; parameter estimation; transformers; EM simulation; RF CMOS process; broadband compact model; distributed capacitive coupling effect; equivalent circuit model; lumped coupling branch; on-chip millimeter-wave balun; on-chip millimeter-wave transformer; parameter estimation method; resonance frequency; size 0.13 mum; Coils; Couplings; Impedance matching; Inductance; Integrated circuit modeling; Metals; Resonant frequency;
Conference_Titel :
Custom Integrated Circuits Conference (CICC), 2011 IEEE
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4577-0222-8
DOI :
10.1109/CICC.2011.6055342
