Five- and eight-element patch antenna arrays linearly fed by dielectric image lines have been developed with good E-plane and H-plane patterns. The measured results and the calculated beam steering angles agree very well. Crosspolarisations are 20 dB and side lobes are 15 dB below the main lobe.
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P. Bhartia ,
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http://iet.metastore.ingenta.com/content/journals/10.1049/el_19940776
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