Reconfigurable Low Profile Antenna

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Reconfigurable Low Profile Antenna

• James Soon
• Advisor Dr. Prasad Shastry

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Topics

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

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

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• Diversity
• Time
• Space
• Frequency
• Polarization

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• Project objectives
• Design
• Simulation
• Manufacture
• Analysis

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• Single port frequency diverse device

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• Dual port polarization diverse device

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Modes of Operation

• Transmit mode
• Applied rf signal converted to radiated signal
• Receive mode
• Radiated signal converted to received rf signal

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• Microstrip construction

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• Microstrip antennas

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• Coplanar waveguide construction

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• Radiation characteristics

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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.

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• Antenna with switchable polarization

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Undetermined Design Characteristics

• Antenna construction
• Coplanar
• Microstrip
• Antenna feed structure
• Microstrip line
• Probe
• Diode biasing
• Independent
• Single point

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Data sheet

• Gain gt 5dBi
• Frequency Range 1.5 1.6 GHz range
• Return Loss lt -15 dB
• Radiation pattern
• Polarization Linear, RHCP, LHCP
• Bandwidth approx. 2
• VSWR 2.01

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Methods

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

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Equipment List

• PIN diodes
• Varactor diodes
• Fabrication lab
• Anechoic chamber

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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

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• Questions?