Communications: directive radio wave systems and devices (e.g. – Directive – Including a steerable array
Patent
1989-04-24
1993-08-03
Issing, Gregory C.
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a steerable array
342371, H01Q 322
Patent
active
052333582
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 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.
REFERENCES:
patent: 4072956 (1978-02-01), Provencher
patent: 4638317 (1987-01-01), Evans
patent: 4721960 (1988-01-01), Lait
Shelton, "Fast Fourier Transforms and Butler Matrices" Proceedings of the IEEE, Mar. 1968, p. 350.
Denson-Low Wanda K.
Hughes Aircraft Company
Issing Gregory C.
Streeter William J.
LandOfFree
Antenna beam forming system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Antenna beam forming system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Antenna beam forming system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2274307