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Considering a Compact SIW Filter for the Lighter Cube-Satellite Reflectarray Antenna

This paper suggests a possible solution to make a relatively light cube satellite that has a reflectarray. The key to the lower weight is changing the bulky waveguide to a compact SIW bandpass filter as an important part of antenna feed assembly. The design shows the unwanted band of the feed horn is suppressed by the filter and it is connected to the reflectarray that contributes a useful increase to antenna gain nearly 22 dBi for 28 GHz as a 1 GHz-bandwidth Ka-band signal. Also, the suppression of the unwanted signals is shown to be larger than 20 dB.