ULTRASONIC TRANSMITTER TEAM BCDR Amanda Hellberg Brandon Ravenscroft

ULTRASONIC TRANSMITTER TEAM B-CDR Amanda Hellberg, Brandon Ravenscroft, Jonathan Owen, and Kai Gustafson

LEVEL 0: RADAR SYSTEM Buffer Amplifier Arduino DUE DAC Programmable Amplifier Impedance Matching Network Test Point Transducer Output Chirp ADC On-board RCVR Test Point Echo from chirp

SCHEMATIC: RADAR SYSTEM

16 -ELEMENT ULTRASONIC TRANSMITTER

TRANSMITTER SYSTEM AND SINGLE CHANNEL RECEIVER TEST Transmitted Chirp Beat Waveform Received Chirp

BEAT WAVEFORM AND SPECTRUM Beat Waveform Spectrum *Transmitter and Receiver Separated by 53 cm Beat Frequency (Range = 53. 6 cm)

MIXER SPECTRUM TEST RF=40. 0 k. Hz LO = 34. 5 k. Hz

MIXER OUTPUT SPECTRUM (FILTERED)Up Conversion (74. 5 k. Hz) Down Conversion (6. 5 k. Hz) Mixer Output (IF) Post-Filter Transmitted Sinusoid Mixer Output (IF) Spectrum LO Signal (34. 5 k. Hz) RF Signal (40 k. Hz) Suppression: 23 d. B

HOW TO ACCOMPLISH THIS

PROJECT MANAGEMENT

GANTT CHART

RISKS Input Power to Arduino Due Risk: The Arduino Due can only have an input of 3. 3 V unlike the Arduino Uno having 5 V. Mitigation: Zener diode limiter (clamping circuit. ) Collaboration with Team Receiver Risk: Improper co-location with Receiver Team. Mitigation: Keep in close contact with Receiver team upon design of final board. Scheduling Risk: Not having the code and/or board complete by deadlines. Mitigation: Sticking to Gantt chart schedule to ensure project components are completed on time. Risk: Manufacturing company lead times being inaccurate. Mitigation: Board design submitted two weeks early in event of delay. Test Points Risk: Having a completed faulty board and no way to connect to certain areas to test. Mitigation: Insert appropriate test points in design.

QUESTIONS?