Pagoda is type of antenna that is widely used in FPV drone racing and it’s working on 5.8GHz frequency. It’s main features are high gain, very lightweight design, low aerial drag and very tolerant to mechanical damages. It’s opensource project. Making antenna is very precise manual process as geometry and soldering must be perfect to achieve best results.
More about Pagoda (Slovene): http://forum.modelarji.com/viewtopic.php?f=135&t=96352