Project
| # | Title | Team Members | TA | Documents | Sponsor |
|---|---|---|---|---|---|
| 12 | Cell Phone Transmission Detector Area Award: Courage |
AJ Schroeder Anish Bhattacharya Shandilya Pachgade |
Yamuna Phal | design_document0.pdf design_document0.pdf final_paper0.pdf photo0.png presentation0.pptx proposal0.pdf video |
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| PROJECT TEAM MEMBERS: Anthony Schroeder - ajschro2 Shandilya Pachgade - pachgad2 Anish Bhattacharya - abhttch4 PREFACE: This project was proposed in class on September 5 by Benjamin Eng. He would be our main point of contact and sponsor for this project. PROBLEM STATEMENT: Radio frequency observatories such as the Arecibo Observatory in Puerto Rico rely on receiving low-power RF signals to study astronomy and the upper atmosphere. Stray RF signals from cell phones can disrupt these observations. We would like to develop a detector that will alert a user if a cell phone nearby (max 1 meter distance away from detector) is emitting a RF signal contained in those specific bands used by cell phones in Puerto Rico. PROPOSED PROJECT / SOLUTION: We would use an antenna to receive possible signals. We would then need to design an accompanying transmission line in order to move the signals from the antenna to the rest of the system. We would then use a "pre-selector" bandpass filter in order to clean the incoming signals. We would then use an oscillator and a mixer to transform the signals of interest (> 1 GHz) down to baseband for processing. An Analog to Digital Converter would then feed into a DSP chip which will have a detection algorithm (perhaps using ML) to identify signal power in the bands of interest. Depending on the power in these bands, we would alert the user via an LED or piezo buzzer. GENERAL, TOP-LEVEL SUMMARY OF COMPONENTS: 1. Antenna 2. Designed transmission line 3. Bandpass filter 4. Oscillator 5. Mixer 6. ADC 7. DSP Chip 8. LED/Piezo 9. Battery (and voltage regulator) |
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