RCmall 5.8GHz Triple Feed Patch Antenna, High Gain 9.4dBi Directional Circularly Polarized LHCP RHCP Antenna with 50ohm SMA Dummy Load Terminator for FPV Racing Drone Eachine EC800D (Pack of 2)

The Triple Feed Patch antenna is a directional circularly polarized antenna.

Good radiation efficiency.

Most FR4-based patches have terrible efficiency because FR4 is very lossy at 5.8 GHz.

Good axial ratio, not just directly perpendicular to the patch but also off-center.

Cheap and easy to manufacture with high accuracy, even for a hobbyist.

The Triple Feed Patch antenna can be used as LHCP or RHCP antenna.