Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1982-09-07
1985-08-20
Blum, Theodore M.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
343351, H01Q 322, H01Q 324, H01Q 326
Patent
active
045367663
ABSTRACT:
A external feedback network for decreasing variations in a beam pointing angle of a scanning antenna array. A dedicated aperture manifold is intergral with the aperture of the scanning antenna and provides a signal which represents the beam pointing angle. The signal is detected, decoded, and converted into digital data for averaging and processing by a CPU. The processed data is then compared with a value stored in memory and any difference forms the basis of a correction signal. For application to a microwave landing system, the correction signal is used to adjust the start/stop time of the scanning commands of the antenna to remove the error without modifying the beam steering algorithm. A space-coupled monitor may also be used independent of the feedback network to provide an alarm in response to any failure of the dedicated aperture manifold, the automatic stabilization circuitry or the array system.
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Agovino F. R.
Blum Theodore M.
Hazeltine Corporation
Onders E. A.
Steinberger Brian Scott
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