Method and apparatus for modulating voltage to an antenna reflec

Details Method and apparatus for modulating voltage to an antenna reflec Method and apparatus for modulating voltage to an antenna reflec

1999-02-17

2000-10-24

Wimer, Michael C.

Communications: radio wave antennas

Antennas

With ice clearer or preventer

343840, H01Q 102

Patent

active

061374466

ABSTRACT:
The invention is directed to a method of using a line voltage to heat an antenna reflector. The method includes the steps of providing an electrical heater for the antenna reflector, measuring a magnitude of the line voltage, ascertaining an ambient temperature, establishing a duty cycle for the heater dependent upon each of the measuring step and the ascertaining step, and cyclically connecting the line voltage to the heater and disconnecting the line voltage from the heater in accordance with the duty cycle. The duty cycle is defined as a percentage of total heating time in which the line voltage is electrically connected to the heater. The total heating time is a total time in which the ambient temperature is below a threshold temperature.

REFERENCES:
patent: 5617107 (1997-04-01), Fleming
patent: 5920289 (1999-07-01), Jones
patent: 6064344 (2000-05-01), Walton

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