Hybrid Triple feed Patch array
Need extra distance on your FPV Feed ?
this patch array Designed by Maarten Baert & Robin Theunis may be the answer.
it's a large patch with a diameter of 16cm so we recommend using it on a ground station - but can still be used on goggles if you don't mind how you look : )
The designer’s vision is:
“It’s an unusual array design, the patches have different shapes and only the one in the center is fed. The other ones are weakly coupled with the center patch as well as each other in order to make them resonate in phase with the center patch. The goal was to minimize FR4 losses by keeping the feed lines very short, while also keeping the amplitude of the center patch somewhat higher than the surrounding patches in order to reduce sidelobes. The resulting radiation pattern has a lower peak gain (about 15 dB instead of the theoretical 17.5 dB), but the main lobe is a lot wider and contains more energy overall (since less energy is lost in sidelobes).“
The test results show that the design is sound and Maarten Baert has met his design goals.
The Triple Feed Patch: Gain is +9.3 dBi with an axial ratio of 0.5 dB. Radiation efficiency is approximately 75% (from an average gain of -1.5 dBi).
The Triple Feed Patch Array: Gain is +14 dBi with an axial ratio of 0.5 dB. Radiation efficiency is approximately 75% (from an average gain of -1.5 dBi).
Both antennas are excellent performers and are innovatively designed, especially considering they operate at 5.8 GHz on inexpensive FR4 PCB.