Method and apparatus for pointing the beam of a wind profiler

Details Method and apparatus for pointing the beam of a wind profiler Method and apparatus for pointing the beam of a wind profiler

2007-05-15

2007-05-15

Tarcza, Thomas H. (Department: 3662)

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

Directive

Including a steerable array

C342S02600R, C342S117000, C342S373000

Reexamination Certificate

active

10539050

ABSTRACT:
The present invention relates to a method and apparatus for pointing the beams (63–67) of a wind profiler comprising a stationary antenna matrix (61) with several individual antenna elements (62). According to the method an input signal is fed to the antenna matrix (61), and the phase of the input signal is adjusted for the individual antenna elements (62) in order to point the beam (63–67) of the profiler. In accordance with the invention separate feeder lines for each beam are used for feeding the signals to the antenna elements (62), and the phase differences between the individual antenna elements (62) are controlled with hybrid coupler elements (3, 4).

REFERENCES:
patent: 3392394 (1968-07-01), Caballero, Jr.
patent: 4633256 (1986-12-01), Chadwick
patent: 5734349 (1998-03-01), Lenormand et al.
patent: 5936592 (1999-08-01), Ramanujam et al.
patent: 6427531 (2002-08-01), Chintawongvanich
patent: 2002/0075183 (2002-06-01), Stephens
patent: 2002/0109630 (2002-08-01), Law
Lorch Microwave, Manual Phase Shifters, http://www.lorch.com/pdf/mps.pdf, Aug. 1999.
D. Parker et al., Phased arrays-part II: implementations, applications, and future trends, IEEE Transactions on Microwave Theory and Techniques, vol. 50(3), p. 688-698, Mar. 2002.

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