Virtual antenna technology (VAT) and applications

Details Virtual antenna technology (VAT) and applications Virtual antenna technology (VAT) and applications

2007-07-31

2007-07-31

Phan, Dao (Department: 3662)

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

Directive

Including a steerable array

C342S372000

Reexamination Certificate

active

10821112

ABSTRACT:
Within an antenna array120,the magnitude and phase of a relationship resulting from propagation delay between a sample taken at a first antenna1to a sample taken at a second antenna2at a different time is employed to derive a data value for a virtual antenna3.Sub-patch antennas203perturbed in elevation are employed to expand the elevation range of acceptable gain. Multiple arrays each providing a separate radio frequency output are employed with digital beamform steering to a single point, together with low noise amplification at the feed point, to achieve sufficient gain with an acceptable total array size. A modular implementation with fiber transport is preferably used.

REFERENCES:
patent: 3599216 (1971-08-01), Paine et al.
patent: 5818385 (1998-10-01), Bartholomew
patent: 6058105 (2000-05-01), Hochwald et al.

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