Title:
PRIMARY RADIATION HORN ANTENNA
Document Type and Number:
Japanese Patent JP2795040
Kind Code:
B2
Abstract:
PURPOSE: To allow the antenna to receive a linearly polarized wave orthogonal to a reflecting plate in the same direction as a coupling probe and not to receive an undesired linearly polarized wave in the same direction as a range of a sector angle.
CONSTITUTION: A sectorial radiation plate 3A spread by an angle in both directions orthogonal to a radiation axis of a horn and a coupling probe 2 when viewing from a front side of the horn is provided in the inside of the horn antenna main body 1. A polarized wave V to be received in the same direction as the coupling probe 2 and orthogonal to the reflecting plate 3A passes through the reflecting plate 3A and received by the coupling probe 2. However, since a polarized wave H unnecessary for reception orthogonal to the coupling probe 2 and in the facial direction as the reflecting plate 3A and a polarized wave P unnecessary for reception in a direction with an angle rotated a little as a radiation axis from the angle orthogonal to the coupling probe 2, that is, the wave in a direction of a range of a sector angle by taking the radiation axis of the sectorial reflecting plate as a rotation axis, are reflected by the reflecting plate 3A, much of polarized waves unnecessary for reception is suppressed.
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Inventors:
SHIMIZU SATORU
Application Number:
JP8380792A
Publication Date:
September 10, 1998
Filing Date:
April 06, 1992
Export Citation:
Assignee:
NIPPON DENKI KK
International Classes:
H01P1/16; H01Q13/02; (IPC1-7): H01Q13/02; H01P1/16
Attorney, Agent or Firm:
Naoki Kyomoto (2 outside)