★EMAX Pagoda 2 Antenna 5.8G 80mm 8cm RHCP Red Omnidirectional Omni FPV Flat Panel SMA(2pcs)

    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% Originally the radiation efficiency was listed as 92%, this was a mistake. These values are based on simulation, actual measurements are below (they are very similar). The center frequency may shift a bit between batches as a result of variations in the dielectric constant of FR4. Also, not all brands of FR4 have the same dielectric constant. Frequency shifts up to 100 MHz are normal.   Radiation pattern   3D radiation pattern. Look at the 2D version if you actually want to see the numbers. Simulation model.     Best case, vertical cross-section taken at various angles.     Worst case, vertical cross-section taken at various angles.     Simulation model.     Best case, vertical cross-section taken at various angles.     Worst case, vertical cross-section taken at various angle