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Reconfigurable Low Profile Antenna

Reconfigurable Low Profile Antenna. James Soon Advisor: Dr. Prasad Shastry. Topics. Introduction Inputs/Outputs Modes of Operation Methods Diagrams Equipment List Schedule. Why reconfigurable antennas? Cost Reliability Cost One is cheaper than two Reliability

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Reconfigurable Low Profile Antenna

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  1. Reconfigurable Low Profile Antenna James Soon Advisor: Dr. Prasad Shastry

  2. Topics • Introduction • Inputs/Outputs • Modes of Operation • Methods • Diagrams • Equipment List • Schedule

  3. Why reconfigurable antennas? • Cost • Reliability • Cost • One is cheaper than two • Reliability • Two are better than one

  4. Diversity • Time • Space • Frequency • Polarization

  5. Project objectives • Design • Simulation • Manufacture • Analysis

  6. Single port frequency diverse device

  7. Dual port polarization diverse device

  8. Modes of Operation • Transmit mode • Applied rf signal converted to radiated signal • Receive mode • Radiated signal converted to received rf signal

  9. Microstrip construction

  10. Microstrip antennas

  11. Coplanar waveguide construction

  12. Radiation characteristics

  13. Research • Several antenna research articles • SUNG, Y.J., JANG, T.U., KIM, Y.S., ‘A Reconfigurable Antenna for Switchable Polarization, IEEE Microwave and Wireless Letters, Volume 14, Number 11, November 2004, pp. 534 - 536.

  14. Antenna with switchable polarization

  15. Undetermined Design Characteristics • Antenna construction • Coplanar • Microstrip • Antenna feed structure • Microstrip line • Probe • Diode biasing • Independent • Single point

  16. Data sheet • Gain > 5dBi • Frequency Range: 1.5 – 1.6 GHz range • Return Loss < -15 dB • Radiation pattern • Polarization: Linear, RHCP, LHCP • Bandwidth: approx. 2% • VSWR 2.0:1

  17. Methods • CAD tools - SONNET, PCAAD, ADS, Momentum • Microwave Integrated Circuit Fab Lab • Network Analyzer, Aneochoic Chamber • Labview, VEE Pro

  18. Equipment List • PIN diodes • Varactor diodes • Fabrication lab • Anechoic chamber

  19. Schedule • RF Labs Jan 1 • Get Married Jan 8 • Honeymoon Jan 22 - 30 • Preliminary Design Feb 26 • Fabrication Mar 19 • Analysis Apr 9 • Presentation & Final Report May 3

  20. Questions?

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