Accession Number : ADD011329

Title :   Dual Band, Low Sidelobe, High Efficiency Mirror Antenna.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Howard,D D

Report Date : 11 Sep 1984

Pagination or Media Count : 4

Abstract : A dual band mirror antenna employing a continuous mirror without a hole. Side-by-side feeds for each band and an electromagnetic lens, located behind a rotatable twist reflector (the mirror), collimate beams toward a pair of polarized reflectors located near the twist reflector and tilted to aim the reflected energy toward the twist reflector. One polarized reflector is reflective at the higher radiofrequency band and transparent at the lower and radiofrequency band. The other polarized reflector is reflective at both bands. Energy directed back toward the polarized reflectors from the twist reflector passes through the polarized reflectors to free space. (Author)

Descriptors :   *Patents, *Directional antennas, *Polarzers, *Mirrors, *Reflectors, Sidelobes, Low frequency, Dual mode, Lenses, Frequency bands, Polarization, Efficiency, Electromagnetism, Energy, Rotation, Electric wire, High rate, Radiofrequency, Twist(Motion), Antennas

Subject Categories : Electrical and Electronic Equipment
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE