Warning apparatus using microwaves

Details Warning apparatus using microwaves Warning apparatus using microwaves

1980-06-18

1982-06-08

Caldwell, Sr., John W.

Communications: electrical

Condition responsive indicating system

Specific condition

332 9T, 343771, 375 23, 455127, G08B 1318, G08G 101

Patent

active

043342140

ABSTRACT:
A warning apparatus comprises a Gunn oscillator, a transmitting antenna, a receiving antenna, a detector, and a comparator which produces a detecting signal when the output signal from the detector is belowed a reference level. The warning apparatus further comprises a drive circuit for applying a rectangular pulse voltage to the Gunn oscillator, a band-pass filter allowing only a microwave with the transmitting frequency band of microwaves received by the receiving antenna to pass therethrough, and a signal generator for applying the reference signal, which changes in accordance with the output signal of the detector, to the comparator.

REFERENCES:
patent: 3363253 (1968-01-01), Ratkevich et al.
patent: 3496568 (1970-02-01), Palumbo et al.
patent: 3541551 (1970-11-01), Bystrom, Jr. et al.
patent: 3860933 (1975-01-01), Terakawa et al.
patent: 4027303 (1977-05-01), Neuwirth et al.
patent: 4191953 (1980-03-01), Woode
patent: 4219802 (1980-08-01), Ceseri
"Installation & Alignment Manual for Microwave Security System, Racon Series 13000", by Racon, Inc., 1977.

Affiliated with

Also associated with

Rating

Warning apparatus using microwaves does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Warning apparatus using microwaves, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Warning apparatus using microwaves will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-555000