Date of Award


Document Type

Undergraduate Thesis

Degree Name



Electrical and Computer Engineering

Faculty Mentor

Samuel Russ


Obstructive sleep apnea is a sleep disorder that tends to be easily treatable but, for most sufferers, is undiagnosed. To lower the economic barriers to screening the design of a portion of a polysomnograph, or obstructive sleep apnea testing tool, is considered. A filtering and amplification stage is theorized, simulated, and constructed for testing. The stage, consisting of three cascaded 1st order Butterworth low pass filters and amplifiers, did not achieve the target signal to noise ratio for a sinusoidal waveform of amplitude 200µv, but showed promising signal to noise ratios for waveforms with amplitudes as low as 600µv. The stage was then designed for implementation on a printed circuit board such that the noise mitigation techniques of printed circuit board implementation would allow successful signal to noise ratios to be achieved.