The quadrifilar helix antenna could be compliant with the ground satellite communication terminals, which features high capture sensitivity of signals and large cover scope. The antenna is composed of radiator, feeding network and supporting medium. The radiator is made of several spiral shape metal wires, and the supporting medium is made of nylon rod, which makes the structure stable and reliable. The feeding network is made of micro-strip power dividers, which fulfills the feeding requirement of the four ports through micro-strip line phase.

 Operation frequency: L-band

 Power capacity: 50W

 VSWR: ≤1.5

 Gain: azimuth: ≥2dB, elevation: -15°to +20°, in range: ≥0dB

 Antenna pattern: horizontal omnidirection

 Polarization: right (left) circularly polarization

 Axial ratio: ≤3dB

 Input impedance: 50Ω

 Connector type: SMA

 Operation temperature: -40～55 oC

 Antenna board dimension: Φ170mm×350mm

 Weight: ≤0.8kg (net weight)