Abstract
A novel beam-steering leaky-wave antenna that uses reactive loading capacitors along the leaky line is presented. The reactive loading varies the phase constant of the leaky line, altering the direction of the main beam. A prototype was constructed and tested, demonstrating that a beam scanning angle of 23/spl deg/ is obtained by periodically loading the 0.06527 pF capacitors along the leaky line at 4 GHz. An electronic beam-steering antenna of scanning angle 13/spl deg/ was established by replacing the metal-insulator-metal (MIM) capacitors with varactors.
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