Enabling a compact model to simulate the RF behavior of MOSFETs in SPICE

A detailed methodology for implementing a MOSFET model valid to perform RF simulations is described in this article. Since the SPICE-like simulation programs are used as a standard tool for integrated circuit (IC) design, the resulting model is oriented for its application under the SPICE environment. The core of the proposed model is the popular BSIM3v3, but in this model the RF effects are taken into account by means of extrinsic lumped elements. Good agreement between the simulated and measured small-signal S-parameter data is achieved for a 0.18-μm channel-length MOSFET, thus validating the proposed model. © 2005 Wiley Periodicals, Inc. Int J RF and Microwave CAE 15, 2005.

[1]  R. van Langevelde,et al.  RF-CMOS performance trends , 2001 .

[2]  K. F. Lee,et al.  Impact of distributed gate resistance on the performance of MOS devices , 1994 .

[3]  Adelmo Ortiz-Conde,et al.  Analysis and Design of MOSFETs: Modeling, Simulation, and Parameter Extraction , 1998 .

[4]  E. Vandamme,et al.  Improved three-step de-embedding method to accurately account for the influence of pad parasitics in silicon on-wafer RF test-structures , 2001 .

[5]  Chenming Hu,et al.  MOSFET Modeling & BSIM3 User’s Guide , 1999 .

[6]  Y. Tsividis.  Operation and modeling of the MOS transistor , 1987 .

[7]  Chenming Hu,et al.  A simple subcircuit extension of the BSIM3v3 model for CMOS RF design , 2000, IEEE Journal of Solid-State Circuits.

[8]  Stefaan Decoutere,et al.  MOSFET bias dependent series resistance extraction from RF measurements , 2003 .

[9]  M. S. Alam,et al.  Extrinsic parameter extraction and RF modelling of CMOS , 2004 .

[10]  R. Gharpurey,et al.  RF MOSFET modeling accounting for distributed substrate and channel resistances with emphasis on the BSIM3v3 SPICE model , 1997, International Electron Devices Meeting. IEDM Technical Digest.

[11]  Seonghearn Lee,et al.  A semianalytical parameter extraction of a SPICE BSIM3v3 for RF MOSFET's using S-parameters , 2000 .

[12]  Juin J. Liou,et al.  Analysis and design of MOSFETs , 1998 .

[13]  Juin J. Liou,et al.  RF MOSFET: recent advances, current status and future trends , 2003 .

[14]  Stefaan Decoutere,et al.  MOSFET gate resistance determination , 2003 .

[15]  Mansun Chan,et al.  A robust and physical BSIM3 non-quasi-static transient and AC small-signal model for circuit simulation , 1998 .

[16]  Yo-Sheng Lin,et al.  An analysis of small-signal substrate resistance effect in deep-submicrometer RF MOSFETs , 2003 .