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1. Hardware Design

pricna edited this page Jun 9, 2021 · 4 revisions

Block Diagram

The block diagram was designed to help us get a better understanding of all the portions that needed to be designed for this project. Given that we had the benefit of seeing what other groups had previously worked on, figuring this out was relatively simple even though it does not fully match our final design.

Bandpass Filter

The bandpass filter was partially based on the work done previously by Caleb Froelich and Konrad McClure. We used the same tool that they used, rf-tools, to calculate the necessary values for a 3rd-order Butterworth bandpass filter for a lower cutoff frequency of 10 MHz and an upper cutoff frequency of 16 MHz. The number of turns for the toroids was determined to be 3nH per turns^2 for the Ts7-6 and 4nH per turns^2 for the T50-6. The 2.15V voltage bias part on the end is used to center the incoming frequency between the maximum and minimum Tayloe Mixer input values, which adds noise, but we ultimately determined that having that part is more useful here. Calculations:

Instrumentation Amplifier

The instrumentation design is very similar to the Caleb and Konrad design, but some small changes include: (I think there were some small changes but I don't remember them right now so this is a placeholder)

Tayloe Mixer

The Tayloe mixer design is very similar to the Caleb and Konrad design, but some small changes include: (I think there were some small changes but I don't remember them right now so this is a placeholder)

Voltage Smoother

Local Oscillator

Voltage Converter

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