H - Electricity – 01 – Q
Patent
H - Electricity
01
Q
351/59
H01Q 21/29 (2006.01) H01Q 3/26 (2006.01) H01Q 3/40 (2006.01) H01Q 25/00 (2006.01)
Patent
CA 2027456
A steerable beam antenna system (24) for use in satellite communication systems and including a main reflector (32) and an antenna array having a plurality of feed elements (50) is disclosed. Additional feed elements (314, 316) are positioned along with the array (116-119) and are used to cancel undesirable side lobes which appear as the beam is steered towards the end portions of a target area (324, 330). The antenna array is positionable at or near at least one focal point of the main reflector (48), and its feed elements can receive microwaves from or transmit microwaves toward the main reflector. A Butler matrix (110) having multiple input ports (310) and multiple outputs (312) is connected to the array of feed elements and substantially performs a spatial discrete Fourier transformation on a generated set of signals to be transmitted which have a predetermined phase relationship between the signals, which is necessary to create the steerable beam. The Butler matrix also can perform an inverse spatial transformation on a set of incoming signals focused on the array by the reflector and received by the feed elements.
Murphy Timothy A.
Renshaw Kenneth H.
Hughes Aircraft Company
Sim & Mcburney
LandOfFree
Satellite beam-forming network system having improved beam... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Satellite beam-forming network system having improved beam..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Satellite beam-forming network system having improved beam... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1447074