SAR Antenna Pattern Measurement by Internal Calibration Method for GF-3 Satellite

Table 1

SAR antenna parameters of GF-3.

Parameters	Values
Central frequency	5.4 GHz
Maximum bandwidth	300 MHz
Polarization	Linear pol, dual pol, quad pol
Polarization isolation	>35 dB
T/R module power	20 W
Number of T/R modules	24(Azimuth) × 32(Elevation) for each polarization
Beamwidth	0.188°(Azimuth), 2.29°(Elevation)
Digital beam control	TX: Phase only (6 bit); RX: Amplitude (6 bit) and phase (6 bit)
Aperture size	15 m × 1.232 m
Number of panels	4
Weight	980 kg (radiating panels only)