Abstract
An X-band four-element linear microstrip leaky-wae () antenna LWA array with a dual-beam radiation pattern and two- dimensional scanning capability is deeloped. The measured half- power beamwidths of the H-plane and quasi-E-plane radiation patterns are less than 308. By tuning the dc bias of thearactor phase shifter between the antenna elements, the main beam can be scanned in the azimuth plane from y138 to q138 off broadside. In the eleation plane, the beam-scanning angle is close to 208 as the operating frequency is tuned from 11.58 to 12.5 GHz. Q 2000 John Wiley & Sons, Inc. Microwave Opt Technol Lett 25: 52)53, 2000.
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