This thoughtfully designed circular polarized antenna utilizes a 3 tiered 1 oz copper PCBs to replace the typically fragile wire elements. At only $8.99USD the antenna only weighs 8 gm and will include the optional heavy duty polyolefin heat shrink to help protect PCB from damage. The Pagoda II has a very good axial ratio measurement <1.3 and SWR of 1.2.
It will work great as either TX or RX antenna and for best performance is recommend using it as matched set but is surely not necessary. As always put you best antenna on the receiving end of your system for top performance. These are sold as singleStubby ( 50mm ) antennas.

Specifications:
Center frequency: 5.8 GHz
Bandwidth: 500 MHz (5.55 – 6.05 GHz)
Matching: S11 < -20 dB, VSWR < 1.22 (at center frequency)
Axial ratio: < 1.3
Radiation efficiency: 95%
SMA connector
Weight 8 gm

This is for 1 antenna and is the  right-hand polarization ( red )

For more information regarding this simple, yet very effective design, please visit this website:
http://www.maartenbaert.be/quadcopte…agoda-antenna/