The dipole antenna is the most fundamental and simplest antenna and was, historically, the first to be used as a reflector feed. To illuminate the reflector efficiently, a small circular disc was used as a subreflector to direct the dipole radiation toward the reflector. An oversized dipole reflector has also been used in place of the disc reflector. While these designs are simple and are used extensively as low-cost or low-frequency feeds, the asymmetric dipole radiation in its Eand H-planes does not illuminate the reflector efficiently.

Inspec keywords: dipole antennas; reflector antennas; antenna feeds

Other keywords: dipole antenna feed; dipole radiation; reflector antenna feed; disc reflector

Subjects: Antenna accessories