Communications: directive radio wave systems and devices (e.g. – Radar ew – Detection of surveilance
Patent
1988-04-04
1989-08-22
Tarcza, Thomas H.
Communications: directive radio wave systems and devices (e.g.,
Radar ew
Detection of surveilance
G01S 740
Patent
active
048600130
ABSTRACT:
An RF multiplexer divides an incoming signal from an RF antenna into disce frequency bands. Each frequency band has its own separate circuit on separate lines to operate on the frequency band and determine if a radar signal is present or if only noise is present on the line. This is done by comparing the incoming signal for magnitude with a DC signal that is generated within the circuit and is proportional to the noise within the frequency band. An indication that any of the signals within the discrete frequency bands exceed the DC signal generated within the same band results in an alarm indication.
REFERENCES:
patent: 3465253 (1969-09-01), Rittenbach
patent: 3660844 (1972-05-01), Potter
patent: 4313216 (1982-01-01), Jaeger et al.
patent: 4700191 (1987-10-01), Manor
Hellner Mark
Lall Prithvi C.
McGill Arthur A.
McGowan Michael J.
Tarcza Thomas H.
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