H - Electricity – 01 – Q
Patent
H - Electricity
01
Q
351/59
H01Q 21/30 (2006.01) H01Q 3/22 (2006.01) H04B 7/204 (2006.01)
Patent
CA 2011483
ABSTRACT An improved antenna beam forming system 10 for generating a set of directed beams wherein each beam may include carrier signals of more than one frequency is disclosed herein. The improved beam forming system of the present invention includes a first beam forming network 20 for providing a first set of signals. The first beam forming network 20 includes a plurality of phase shifting elements 22 for providing a first phase relationship among the first set of signals in response to a first carrier signal of a first frequency. The system 10 of the present invention further includes a second beam forming network 30 for providing a second set of signals. The second beam forming network includes a plurality of phase shifting elements 32 for again providing the first phase relationship among the second set of signals in response to a second carrier signal of a second frequency. An array of summing elements 40 for summing respective signals of the first and second sets of signals is included to provide a third set of signals. The third set of signals is transmitted by a phased array antenna 60 thereby providing first and second contemporaneous beams which overlap at a common surface.
Hughes Electronics Corporation
Sim & Mcburney
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