Simple DIY 5.8GHz Patch Antenna

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A simple yet effective 5.8GHz patch antenna solution is used to boost FPV receiver signal strength and achieves great results. Copper plates have been considered for enhanced performance, but tin cans proved sufficient in this application. The design draws inspiration from the Goof Proof antenna found on rc-cam.com/gp_patch.htm, while size calculations are based on lap.ele.ita.br/microwave_tools.html. This antenna is specifically designed as a LEFT HAND CIRCULARLY POLARIZED ANTENNA and must be matched with an equivalent transmitter antenna featuring the same polarization. For Right Hand polarization, simply flip the plates around. To assemble this patch antenna, begin by gluing it to the front cover, ensuring an exact air gap. The assembly process involves several steps: glue the patch to the front cover; pass the pigtail through the back cover and ground plate; solder the feed line to the patch; glue the ground plane plate to the front cover; and finally, solder the pigtail ground to the ground plate.