CMOS equivalent time sampling of Gaussian monocycle pulse for confocal imaging

Author

Seo, Y. ; Sogo, K. ; Toya, A. ; Sugitani, T. ; Azhari, A. ; Xiao, X. ; Kikkawa, T.

Author_Institution

Res. Inst. for Nanodevice & Bio Syst., Hiroshima Univ., Higashi-Hiroshima, Japan

fYear

2014

fDate

22-24 Oct. 2014

Firstpage

125

Lastpage

128

Abstract

CMOS 102.4 GS/s equivalent time sampling (ETS) circuits with a track and hold, phase-locked loop and analog to digital converter was developed for radar-based breast cancer detection. The track and hold circuits of the ETS covered the bandwidth of 2.9-13.9 GHz by use of a 1.27 nH series inductor to compensate parasitic capacitances. The pulse width and the bandwidth of the input Gaussian monocycle pulse (GMP) were 107 ps and 4.45-15.8 GHz, respectively. The received GMP waveforms by 4 × 4 antenna array were converted to 4-bit digital codes. A three dimensional confocal imaging of a 20 × 20 mm² target in a homogeneous breast phantom was demonstrated.

Keywords

CMOS integrated circuits; Gaussian processes; antenna arrays; biological tissues; biomedical electronics; biomedical equipment; cancer; capacitance; codes; image sampling; inductors; mammography; medical image processing; phantoms; phase locked loops; radar imaging; sample and hold circuits; waveform analysis; 4-bit digital code; CMOS ETS circuit; CMOS equivalent time sampling circuit; GMP bandwidth; GMP pulse width; GMP waveform conversion; analog to digital converter; antenna array; frequency 2.9 GHz to 13.9 GHz; frequency 4.45 GHz to 15.8 GHz; homogeneous breast phantom; input Gaussian monocycle pulse; parasitic capacitance compensation; phase locked loop; radar-based breast cancer detection; series inductor; size 20 mm; three dimensional confocal imaging; track and hold circuit; Antenna arrays; Arrays; Breast cancer; CMOS integrated circuits; Imaging; Inductors; CMOS; Gaussian monocycle pulse; breast cancer detection; equivalent time sampling; track and hold; ultra-wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Biomedical Circuits and Systems Conference (BioCAS), 2014 IEEE

Conference_Location

Lausanne

Type

conf

DOI

10.1109/BioCAS.2014.6981661

Filename

6981661