125 mW 102.4 GS/s Ultra-High-Speed Sampling Circuit for Complementary Metal–Oxide–Semiconductor Breast Cancer Detection System

Abstract

For application to an impulse-radio ultra-wideband (IR-UWB) portable breast cancer detection system, a 102.4 GS/s sampling circuit is developed. The high sampling rate is realized by an equivalent-time sampling technique and a low-power multi-clock generation circuit using a phase interpolator. The phase interpolator achieved a minimum phase resolution 9.8 ps. Using the sampling circuit, a tumor phantom buried by a breast phantom was detected.