H - Electricity – 01 – Q
Patent
H - Electricity
01
Q
351/59
H01Q 19/17 (2006.01) H01Q 3/44 (2006.01) H01Q 13/02 (2006.01) H01Q 17/00 (2006.01) H01Q 21/00 (2006.01) H01Q 21/06 (2006.01)
Patent
CA 1238714
Abstract of Disclosure A shaped beam antenna comprises an array antenna having a planar surface on which a plurality of radiating elements are arranged, and a main reflector disposed behind with respect to the radiating direction of the array antenna. The main reflector comprises a plurality of partial cylindrical or planar reflector segments. Where Cartesian coordinates is assumed having an origin in the center of the planar surface of the array antenna, an X-axis extending in a vertical center axis of the array antenna, a Z-axis extending in a direction perpendicular to the planar surface through the origin, and a Y-axis, extending in a direction perpendicular to the X- and Z-axes through the origin, the shaped beam antenna is characterized in that the longitudinal axis of each reflector segments is in parallel with the X-axis, the main reflector is symmetrical with respect to the X-Z plane and formed convex in a negative direction of the Z-axis, and each radiating element is disposed so that its excitation amplitude is symmetrical with respect to the Y-Z plane and its excitation phase is antisymmetrical with respect to the Y-Z plane, whereby a radiation beam formed by the main reflector is symmetrical with respect to the Z-axis on the Y-Z plane and is asymmetrical with respect to the Z-axis on said X-Z plane. Thus, with this antenna, a good beam shaping performance and an excellent cross polarization discrimination can be obtained.
489794
Kusano Mitsuhiro
Seki Hajime
Corporation Nec
Smart & Biggar
LandOfFree
Shaped beam antenna does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Shaped beam antenna, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shaped beam antenna will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1297869