Antenna device

Communications: directive radio wave systems and devices (e.g. – Directive – Including antenna orientation

Reexamination Certificate

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Details

C342S430000

Reexamination Certificate

active

07843385

ABSTRACT:
An antenna device includes: an antenna base portion; an antenna mount portion which is supported by the antenna base portion and rotated around an azimuth axis and which supports a main reflector with two struts; a frame structure group including a plurality of frame structures which are provided in the antenna base portion and the antenna mount portion, with six degrees of freedom restrained, respectively; a displacement gauge group which measures a displacement of the frame structure group; a metrology correction portion which calculates a pointing error of an antenna based on measured data of the displacement gauge group and calculates a metrology correction amount by removing an error amount arising depending on an azimuth angle from the calculated pointing error; and a control circuit which controls a driving of the antenna by correcting a drive command value of the antenna with the metrology correction amount.

REFERENCES:
patent: 6538602 (2003-03-01), Natsume et al.
patent: 2003/0016172 (2003-01-01), Natsume et al.
patent: 2003/0034928 (2003-02-01), Murakado
patent: 2004/0212794 (2004-10-01), Mizuno
patent: 2007/0032950 (2007-02-01), O'Flanagan et al.
patent: 1 511 118 (2005-03-01), None
patent: 2 432 459 (2007-05-01), None
patent: 2002-333011 (2002-11-01), None
patent: 2004-340372 (2004-12-01), None
patent: 2005-140185 (2005-06-01), None
patent: 2007-129454 (2007-05-01), None
Wodek Gawronski, et al., “Azimuth-Track Level Compensation to Reduce Blind-Pointing Errors of the Deep Space Network Antennas”, IEEE Antennas and Propagation Magazine, vol. 42, No. 2, XP011081242, Apr. 2000, pp. 28-38.

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