Integrated proximity detector for antennas

Details Integrated proximity detector for antennas Integrated proximity detector for antennas

1998-12-30

2000-08-29

Swann, Glenn

Communications: electrical

Condition responsive indicating system

Specific condition

340540, 3405734, 340600, 340635, G08B 1318, G08B 2100, G08B 2102

Patent

active

061115037

ABSTRACT:
A method and apparatus for detecting the presence of objects such as persons in front of a high-frequency communications antenna comprising a transmitting element connected to a circulator. The circulator is connected to an antenna system which transmits the signal pursuant to a designated communications or other application. The circulator is also connected to a regulator circuit which measures a reflected signal received from the circulator. The regulator circuit thereupon initiates a reduction or termination in power from the transmitting element, and/or initiates an alarm, when the regulator circuit detects a reflected signal having a magnitude indicating the presence of the object to be detected.

REFERENCES:
patent: 3163861 (1964-12-01), Suter
patent: 3932871 (1976-01-01), Foote
patent: 4242669 (1980-12-01), Crick
patent: 4673935 (1987-06-01), Spencer
patent: 4910464 (1990-03-01), Trett et al.

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