Low-power quadrature VCO design for medical implant communication service

Jeong Ki Kim; Jihoon Jeong; Dong Sam Ha; Hyung-soo Lee

doi:10.1109/DDECS.2011.5783122

14th IEEE International Symposium on Design and Diagnostics of Electronic Circuits and Systems

Low-power quadrature VCO design for medical implant communication service

Year: 2011, Pages: 403-404

DOI Bookmark: 10.1109/DDECS.2011.5783122

Authors

Jeong Ki Kim, Bradley Department of Electrical and Computer Eng., Virginia Tech, Blacksburg, 24061 USA
Jihoon Jeong, Bradley Department of Electrical and Computer Eng., Virginia Tech, Blacksburg, 24061 USA
Dong Sam Ha, Bradley Department of Electrical and Computer Eng., Virginia Tech, Blacksburg, 24061 USA
Hyung-soo Lee, Green Computing Research Division, Electronics and Telecommunications Research Institute, (ETRI) Daejeon, 307-700 KOREA

Abstract

This paper presents two different implementations of a low-power quadrature frequency source generator for medical implant communication service (MICS) applications. The first circuit uses a current-reuse VCO running at double the target frequency followed by a divide-by-two frequency divider. The circuit dissipates only 230 μW and achieves low phase noise of -127 dBc/Hz@1MHz. The second one adopts a parallel-coupling scheme to combine two current-reuse VCOs (P-QVCO). The circuit exhibits a moderate power consumption of 960 μW and achieves very low phase noise of -138 dBc/Hz@1MHz.

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Low-power quadrature VCO design for medical implant communication service

Authors

Abstract

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