Method and apparatus for de-icing a satellite dish antenna

Details Method and apparatus for de-icing a satellite dish antenna Method and apparatus for de-icing a satellite dish antenna

1997-02-03

1999-01-19

Wong, Don

Communications: radio wave antennas

Antennas

With ice clearer or preventer

343703, H01Q 102

Patent

active

058618554

ABSTRACT:
A method and system for controlling a heating device mounted on e.g. a satellite receiver antenna is disclosed. The method includes the steps of determining whether the signal strength is degrading, determining whether a temperature is below a threshold temperature, and operating a heating device on the antenna only if the signal is degrading and the temperature is below the threshold. The system includes a temperature sensor that samples a relevant temperature, a device that measures a signal strength of a signal received by the antenna, logic in communication with the temperature sensor and the measuring device for determining whether both the signal strength is degrading and the sample temperature is below a threshold temperature, and a control or switch device for operating a corrective device, such as a heater. The system and method herein automatically turns on an antenna heating device or other device to melt snow or frost accumulated on the receiver antenna upon detecting a loss of signal strength and a sufficiently low temperature.

REFERENCES:
patent: 4593273 (1986-06-01), Narcisse
patent: 4890332 (1989-12-01), Takahashi
patent: 5239684 (1993-08-01), Ishikura
patent: 5386587 (1995-01-01), Yuzawa
patent: 5509081 (1996-04-01), Kuusama
patent: 5630218 (1997-05-01), Muto

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