The History of the Development of the Dielectric Resonator Antenna
The History of the Development of the Dielectric Resonator Antenna
The History of the Development of the Dielectric Resonator Antenna
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2) Early <strong>Development</strong> <strong>of</strong> microstrip antennas at <strong>the</strong>University <strong>of</strong> HoustonUniversity <strong>of</strong>Houston• Supported by US ArmyResearch Office• Interest in very ruggedradiators for artillery shellsFormulas developed <strong>the</strong>n are stillused for resonant frequencycalculationsae⎧ 2h⎡ ⎛πa ⎞⎤⎫= a⎨1 + ln 1.7726πaε⎢ ⎜ + ⎟ ⎬r2h⎥⎩ ⎣ ⎝⎠⎦⎭1/2ICEEA '07 -- Sept 20, 2007 3
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