Grating ridged waveguide V-shaped slot array antenna for SATCOM applications

摘要

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).