Title page for ETD etd-050505-105548

Document Type	thesis
Author Name	Ozbas, Halil I
URN	etd-050505-105548
Title	High-Gain Transimpedance Amplifier With DC Photodiode Current Rejection
Degree	MS
Department	Electrical & Computer Engineering
Advisors	Brian M. King, Advisor John A. McNeill, Committee Member Shela J. Aboud, Committee Member
Keywords	high-gain transimpedance tia differential dc rejection dc photodiode current cancellation bilinear automatic gain control optical cohesion tomography oct
Date of Presentation/Defense	2005-04-27
Availability	unrestricted
Abstract This master's thesis deals with the design of a differential high-gain transimpedance amplifier in TSMC's 0.18 um mixed signal process that utilizes a DC photodiode current cancellation loop and a switching automatic gain control (AGC) with a bilinear gain curve. The amplifier is designed to satisfy the demands of Optical Coherence Tomography applications where the receiver is expected to measure the envelope power of an amplitude modulated sinusoidal optical signal that incorporates a large DC component. Methods of increasing dynamic range and gain linearity through the use of DC photodiode current cancellation and bilinear gain are explored. Effects of changing DC photodiode current on the overall system response is also demonstrated.
Files	hozbas.pdf

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