Communications: directive radio wave systems and devices (e.g. – Directive – Including a steerable array
Patent
1996-10-04
1998-05-26
Blum, Theodore M.
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a steerable array
342375, H01Q 322, H01Q 324, H01Q 326
Patent
active
057573182
ABSTRACT:
A receiving system 100 is disclosed which includes at least one antenna 101 providing a plurality of antenna beams. A first processing branch 103 is included for processing a first plurality of signals appearing within a first plurality of the antenna beams. The first processing branch 103 includes a plurality of delay paths 105 each receiving a one of the first plurality of signals from a corresponding one of the first plurality of antenna beams and applying a predetermined amount of delay thereto, the preselected amount of delay proportionate to the corresponding one of the beams. First processing branch 103 further includes a combiner 106 for combining the first plurality of signals after output from the plurality of delay paths 105. A second processing branch 104 is provided for processing a second plurality of signals appearing within a second plurality of the antenna beams. Second processing branch 104 includes a plurality of delay paths 105, each delay path receiving one of the second plurality of signals from a corresponding one of the second plurality of antenna beams and applying a pre-selected amount of delay thereto, the pre-selected amount of delay being proportionate to the corresponding one of the beams.
REFERENCES:
patent: 4701935 (1987-10-01), Namiki
patent: 5280472 (1994-01-01), Gilhousen et al.
patent: 5347535 (1994-09-01), Karasawa et al.
patent: 5459873 (1995-10-01), Moore et al.
patent: 5530926 (1996-06-01), Rozanski
Dennis A. Jiraud, "Broadband CDMA for Wireless Communication," Applied Microwave & Wireless, pp. 22-34.
CDMA Network Engineering Handbook, Draft Version XI, Chapter 2, pp. 2-1 through 2-21.
Blum Theodore M.
Metawave Communications Corporation
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