Abstract
A wideband full-metal planar antenna array with full-corporate feed-network is proposed. Cavity and slot are used as the basic radiation element and T-shaped walls are employed in the cavity to achieve wide bandwidth. $E$ -plane waveguide feed-network configuration is utilized so as to suppress wave leakage between adjacent layers when the antenna is fabricated by a conventional machining technique. An $8 \times 8$ antenna array prototype with optimized parameters is tested. Experimental results show that the bandwidth of ${\text{VSWR}} is up to 36.9% ( $10.24-14.87\;{\text{GHz}}$ ). More than 60% aperture efficiency and higher than 23.4 dBi gain are achieved over the operational bandwidth.
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