title: Analog CMOS circuit design and characterization for optical coherence tomography signal processing.
abstract: We have developed a custom analog CMOS circuit to perform the signal processing for an optical coherence tomography imaging system. The circuit is realized in a 1.5 microm low-noise analog CMOS technology. The circuitry extracts the Doppler frequency from the signal and electrically mixes this with the original signal to provide a filtered A-scan. The circuitry was used to produce a two-dimensional image of an onion.
authors.affiliation: Electrical and Computer Engineering Department, University of Arizona, Tucson, AZ 85721, USA. rajesh@ece.arizona.edu
authors.forename: Rajesh
authors.initials: R
authors.lastname: Kariya
authors.forename: David L
authors.initials: DL
authors.lastname: Mathine
authors.forename: Jennifer K
authors.initials: JK
authors.lastname: Barton
mesh_terms: D004582:Electronics, Medical; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007089:Image Enhancement / Q000295:instrumentation* / Q000379:methods; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D041623:Tomography, Optical Coherence / Q000295:instrumentation*; D014173:Transistors, Electronic