Patch Antenna Design

EE144/245 Spring 2007H. Miranda

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Patch Antenna Characteristics

AdvantagesCompactConformalGood efficiencyEasy to produce arrays

DisadvantagesVery narrow bandNon omnidirectional patterns

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Antenna Layout

h < 0.02 λg

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Equivalent Circuit

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Design Equations

(not critical)

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Example: 3 GHz AntennaSubstrate: Duroid 5880 (εr = 2.2, h=30 mils)

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Example

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Radiation Patterns

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Bandwidth performance

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Directivity performance

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Efficiency performance

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Other Feeding Methods

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Circular Polarization

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Phased arrays

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Phased Array Design

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Phased array example (16x16)