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The design of a resonant slot array antenna in a single layer ridge gap waveguide is presented. Linear and planar array configurations are developed. The linear array includes eight series slots in the ridge gap waveguide that is powered by a coaxial transmission line. The planar antenna array is developed by incorporating a power divider of four branches in the ridge gap waveguide layer. Each branch of the power divider feeds the linear array. The planar antenna detail design for Ku‐band is provided, and the manufactured antenna is measured. The antenna impedance bandwidth of 7% at 13.5 GHz centre frequency, the gain of 20.5 dBi and the side lobe level of <14 dB are obtained.
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Khaleghi et al. (2017) studied this question.
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