1. General Description
The antenna is a horn-fed paraboloid and operates in S-band. The antenna is mounted on a pedestal inside the radome and it can operate continuously for 24 hours.
2. Antenna Electrical Specifications
The antenna provides a single pencil beam in accordance with the following electromagnetic requirements.
Operating Frequency Range 2.7～3.0GHz
Polarization linear horizontal
Beamwidth, max 0.99 deg
Power Gain, min 45dBi (midband), 44.5dBi (over the operating frequency)
Sidelobe Levels ≤-27dB 0 deg to ±2deg in every plane
straight line connecting –26dB ±2deg and –38dB ±10deg in every plane
≤-42 dB ±10deg or above in every plane (averaging of sidelobes above 10deg as specified for NEXRAD)
Median Gain ≤ -13dBi
Power-Handing Capability Combined peak power level: 0.9MW,
Average power level: 1.8KW
Air Pressurization of waveguide 7 PISG