Abstract
This Letter presents a grating ridged waveguide V-shaped slot array antenna for satellite communication (SATCOM) receiving antenna applications. A special grating ridged waveguide, V-shaped slots and a matching section are applied in the proposed antenna design, so that the antenna provides an extra filtering response with a high radiation polarisation purity in a compact structure. For demonstration, a referential normal ridged waveguide V-shaped slot array antenna is designed and compared. The simulation results show that the proposed antenna not only operates well in the working frequencies (12.25–12.75 GHz) but also provides the antenna gains of lower than − 17.8 dB compared with those of the referential antenna in the interference frequencies (14.0–14.5 GHz).
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