... Advanced Microwave and Millimeter Wave Technologies: Semiconductor Devices, Circuits and Systems204Zeidaabadi Nezhad, A. & Firouzeh, Z. H. (20 05) . Analysis and Simulation of Shaped Reflector Antennas, ... software and both results are in good agreement. Advanced Microwave and Millimeter Wave Technologies: Semiconductor Devices, Circuits and Systems224 amplifier (VGA). And it is fed to the double-balanced ... systems to large cassegrain antennas, Int. Jour. Infrared Millimeter Waves, Vol. 7, 151 1- 153 6, 01 95- 9271 Lesurf, J. C. G. (1990). Millimetre -wave Optics Devices and Systems, Adam Hilger, 0 852 741294,...