RF linearity study of SiGe HBTs for low power RFIC design. II. Analysis

Author

Xiaojuen, Y. ; Lie, D.Y.C. ; Larson, L.E. ; Blonski, J. ; Gross, J. ; Kumar, M. ; Mecke, J. ; Senior, A. ; Chen, Y. ; Poh, Andrew ; Harame, David

Author_Institution

Commun. Res. & Dev. Center, IBM Microelectron., San Diego, CA, USA

fYear

2002

fDate

17-19 Aug. 2002

Firstpage

74

Lastpage

77

Abstract

For pt. 1 see ibid., p. 70-73 (2002). An analysis is introduced for the third-order-intermodulation (IM3) cancellation induced by the emitter-terminations, which has been observed in part I of this paper. The analysis shows that the IM3 can be perfectly cancelled if the emitter impedance at the second harmonic and the sub-harmonic frequencies are terminated properly and if the effect from q_bc is negligible. When the effect of q_bc cannot be neglected, optimized source and load harmonic terminations are proposed to minimize the q_bc effects. Increasing the source impedance at the fundamental frequency is found effective in minimizing the residual IM3 that is not cancelled from the proposed terminations.

Keywords

Ge-Si alloys; UHF bipolar transistors; Volterra series; equivalent circuits; harmonics; heterojunction bipolar transistors; integrated circuit design; intermodulation distortion; low-power electronics; microwave bipolar transistors; nonlinear network analysis; radiofrequency integrated circuits; semiconductor device models; semiconductor materials; IM3 cancellation; RF linearity study; SiGe; SiGe HBTs; emitter impedance; emitter-terminations; fundamental frequency; low power RFIC design; optimized load harmonic terminations; optimized source terminations; second harmonic sub-harmonic frequencies; third-order-intermodulation cancellation; Germanium silicon alloys; Heterojunction bipolar transistors; Impedance; Linearity; Low-noise amplifiers; Microelectronics; Performance analysis; Radio frequency; Radiofrequency integrated circuits; Silicon germanium;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and Millimeter Wave Technology, 2002. Proceedings. ICMMT 2002. 2002 3rd International Conference on

Print_ISBN

0-7803-7486-X

Type

conf

DOI

10.1109/ICMMT.2002.1187638

Filename

1187638