Antenna apparatus

Details Antenna apparatus Antenna apparatus

2005-08-23

2005-08-23

Lee, Wilson (Department: 2821)

Communications: radio wave antennas

Antennas

Wave guide type

C343S7810CA

Reexamination Certificate

active

06933904

ABSTRACT:
An antenna apparatus detects a reflected light from a scattered light or from a reflector (40) mounted in an optical fiber (6,6a-6d), measures a strain generated in a primary reflecting mirror (1) and so on based on the scattered light or the reflected light, and calculates a reflector surface compensation data based on the strain of the primary reflecting mirror (1) and so on. An antenna driving section (11) is driven according to the reflector surface compensation data in order to compensate a direction of an antenna.

REFERENCES:
patent: 3803626 (1974-04-01), Garrett
patent: 4544928 (1985-10-01), Afifi et al.
patent: 4755826 (1988-07-01), Rao
patent: 5197827 (1993-03-01), Lee
patent: 5327149 (1994-07-01), Kuffer
patent: 5706017 (1998-01-01), Buttgenbach
patent: 1 382 094 (1975-01-01), None
patent: 3-3402 (1991-01-01), None
patent: 10-141922 (1998-05-01), None
Patent Abstracts of Japan, JP 11-287650, Oct. 19, 1999.
M. Ishiguro, et al., “Measurements of Reflector Surface Accuracy for 45M Radio Telescope Based on Radio Holography Method”, Mitsubishi Denki GIHO vol. 62, No. 5, 1988, 9 pages (with English Abstract).
T. Kurashima, “Structural Deformation Monitoring Using Reflectometry in Optical Fibers”, Kogaku Japanese Journal of Optics, vol. 28, No. 3, Mar. 1999, 9 pages (with English Extract).

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