Monday, September 13, 2004

Radar, Antennas

A widely used form of radar antenna is the parabolic reflector, the principle of which is shown in cross section in Figure 4 (A). A horn antenna or other small antenna is placed at the focus of the parabola to illuminate the parabolic surface of the reflector. After being reflected by this surface, the electromagnetic energy is radiated as a narrow beam. A paraboloid, which


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