1 ECE Department SDP07 Advisor Marinos Vouvakis Members Mikeoll Echeverria Maria Gomes Juan Lopez Harmonic Radar Transceiver making tracking small animals safe and easy MDR 12/08/2006

2 ECE Department SDP07 Background What is the problem? Tracking some animals is hard but key in biology research Why is important? Important to understand animals’ behavior What has been done? Existing methods are problematic Normally big transmitters Battery powered Expensive Frequent technical failures

3 ECE Department SDP07 Solution What needs to be done? Tracking should avoid influencing animal behavior What are we doing? Track tagged small animals, insects, birds Develop small & minimal complexity tags Develop a harmonic radar transceiver Tag (Passive reflector) Independent of energy source Small and light Inexpensive Tag

4 ECE Department SDP07 Principle of Operation How are we doing it? RxRx F0F0 F0F0 2F 0 RxRx TxTx F0F0

5 ECE Department SDP07 Specs  Range 10 meters  Angle of resolution At most 30 degrees

6 ECE Department SDP07 System Design POWER SUBSYSTEM -Power Supply 15 W -Transformers 7V, 9V, 12V Friis Equation TAG Tag Model Diode Conversion efficiency: E d = 0.8% G dh EdEd G df

7 ECE Department SDP07 Arriving to Parameters Transmitting Power 26dBm = 0.4W Signal source VCO enough Rx Power min: At least -103dBm (sensitivity) Noise floor Operation point -74.3dBm Margin=30dB

8 ECE Department SDP07 Budget VCO $50 Directional Coupler $30 Bandpass Filter $0 Power Amplifier $170 TX Antenna $0 RX Antenna $0 Bandpass Filter $100 Frequency Multiplier $48 IF Amplifier $65 Lowpass Filter $37 Total $640 Low Noise Amplifier $65

9 ECE Department SDP07 Tag Fabrication and Testing Fabrication AWG#24 copper wire Agilent HSCH-5340 beam lead Schottky diodes Test Procedure Power reflection for several tags’ dimensions Characterization of tags’ cross sectional area Picture of the Tag Test Results NOT COMPLETE

10 ECE Department SDP07 MDR Deliverables Tag built  Tag tested Finalized block diagram topology Perform system design simulations using MATLAB Decision on signal source Decision on frequency Cost Analysis and market research

11 ECE Department SDP07 Next Step Borrow available components from Antennas and Propagation Lab, Microwave Remote Sensing Lab, Microwave Instructional Lab Buy rest of the components Start building the receiver

12 ECE Department SDP07 Project Timeline TasksFebMarAprilMay Borrow available components from Labs Purchase remaining Components Start Building Transmitter Start Testing Transmitter Start Building Receiver Start Testing Receiver Integrate/Test Radar with Tag Test Entire System

13 ECE Department SDP07 Final Deliverables A working prototype of the harmonic transceiver (radar) and tag Complete project documentation The user manual Mathematical model System specifications Block diagram Schematics Simulations

14 ECE Department SDP07 The End Thank You! QUESTIONS?

15 ECE Department SDP07 Work Cited  Colpitts C, D. Luke, G. Boiteau, and M. Doyle, Harmonic Radar Identification Tag for Insect Tracking IEEE Canadian Conference on Electrical and Computer Engineering.  Colpitts, Bruce G. Harmonic Radar Transceiver Design: Miniature Tags for Insect Tracking Transactions on Antennas And Propagation Vol. 52, No. 11, (November 2004):  Pozar, David M. Microwave Engineering Willey 2005