Cassegrain feedis usedwith a parabolic reflectorto
a. increase the gain of the system
b. increase the beamwidth of the system
c. reduce the size of the main reflector
d. allowthe feedtobeplacedata convenientpoint
a. increase the gain of the system
b. increase the beamwidth of the system
c. reduce the size of the main reflector
d. allowthe feedtobeplacedata convenientpoint