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Emax Pagoda II

Emax “Pagoda II” - designed by Maarten Baert. This circular polarized antenna utilizes a 3 tiered 1 oz copper PCB to replace the typically fragile wire elements. The antenna only weighs 8g with a 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 we recommend using it as matched set. Each package is a set of 2 antennas with the option for Stubby at 50mm and Standard 80mm lengths. 

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


Materials:
To abide by Maarten Baert's design specs, Emax uses genuine FR4 PCB material at 1.0mm thickness and 35 µm (1 oz) of copper (Not the regular 1.6mm thickness). Since the antenna was designed around the FR4 material, the thickness is absolutely crucial for efficient functionality.

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