Beamformer using cascade multi-order factors, and a signal...

Details Beamformer using cascade multi-order factors, and a signal... Beamformer using cascade multi-order factors, and a signal...

2008-12-29

2010-10-19

Phan, Dao L (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a steerable array

C342S368000, C342S373000

Reexamination Certificate

active

07817089

ABSTRACT:
A beamformer includes a number (T) of consecutive combining stages. A Tthcombining stage includes a converging unit. Each of first to (T−1)thcombining stages includes a plurality of converging units. The number of the converging units in a preceding combining stage is greater than that of a succeeding combining stage. Each converging unit in the first combining stage combines three arrival signals from an antenna array in accordance with corresponding weights so as to form an output signal. Each converging unit in each of second to (T−1)thcombining stages combines output signals of three corresponding converging units in an immediately preceding combining stage in accordance with corresponding weights so as to form an output signal. The converging unit of the Tthcombining stage combines the output signals from the converging units in the (T−1)thcombining stage in accordance with corresponding weights so as to form an output signal that serves as an array pattern.

REFERENCES:
patent: 2007/0135051 (2007-06-01), Zheng et al.
patent: 2010/0046770 (2010-02-01), Chan et al.

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