The Aomway ANT015 8dBi high gain patch antenna is a great way to get started with circular polarization for your FPV rig.
Designed to fit directly to the front of your goggles via the SMA Male connector.
Without going into the theory of circular polarization or dB gain, suffice to say that the 8dBi gain provides a really useful boost in performance for your reciever.
The light, durable construction it makes the ideal antenna for your everyday flights at the field in combination with your 5.8 GHz A/V system.
Frequency band: 5.8GHz
Resistance: 50 Ohm
Connector: SMA Male
Dimensions: 40 x 40 x 22mm