DATE: 10 February , 2014

TO: Dave Michelson, Ph.D, P.Eng.

FROM: Wayne Huang, EECE 380 Team L2B2

SUBJECT: Project Progress Report for the week of February 3rd

This week we attempted to finish up the design and build of the separate blocks of our system. We had a few setbacks where the output of the blocks were undesired or their behaviour unexpected.

Our precision peak detector was implemented using a lm-6172 op amp. The initial output was not what we expected with the value of components we calculated. The output signal was either very noisy or there was a large amount of loss. We deducted that this was caused by the inherent capacitance of the breadboard, and had to tweak the values through trial and error.

We decided to construct our IF bandpass filter using four crystal oscillators in series, without any capacitors. This gave a desirable frequency response with a very narrow band, so we left it as just the crystals in series. Upon further observation, there was a very steady rise in the response at a much later frequency. We will have to test to see if this will cause problems for our system and have though about using a low pass filter as a solution.

We created a basic display in LabVIEW that shows a signal input into the MyDAC and was able to test it by displaying a waveform from the function generator. We attempted to test if the display would work as intended in our system, but we were unable to functionally connect the blocks of our system together.

In the coming week, our goal is to connect all the blocks of our system together, work out any abnormalities and problems, and have a very basic spectrum analyser working.