What type of antenna produces a pencil beam and is often used in tracking RADAR?

The type of antenna that produces a pencil beam and is frequently employed in tracking RADAR is the parabolic reflector. This design is characterized by its ability to focus incoming signals into a narrow beam, which is crucial for accurately tracking objects. The shape of the parabolic reflector allows it to collect and reflect electromagnetic waves in such a way that the majority of the energy is directed into a tight beam, enhancing the precision of target detection and tracking.

This capability makes parabolic reflectors particularly effective in applications where a focused signal is necessary, such as in military and aerospace tracking systems. The narrow beamwidth minimizes interference from surrounding signals, further improving the system’s ability to follow fast-moving targets.