Research Article

Design of an L-Band Cross-Dipole Phased Array Feed for FAST

Table 2

Performance specification for L-band FAST-PAF.

ParameterQuantity

Operating frequency range1.05 GHz–1.45 GHz
Instantaneous bandwidth≥500 MHz
PolarizationDual-polarization
Field of view deg2
Simultaneous beams>100
System noise temperature≤25 K
Sensitivity≥2000
Aperture efficiency≥55% (in 300 m diameter)
Radiation efficiency≥98%