Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1977-08-01
1979-02-13
Wilbur, Maynard R.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
307360, G01S 924
Patent
active
041398513
ABSTRACT:
Apparatus is responsive to an alternating signal which exceeds a first level, V.sub.L, and within a given time, t, exceeds a greater second level, V.sub.H, by causing a signal manifestation pulse to issue. The apparatus is responsive to a signal which does not exceed V.sub.H within time t after exceeding V.sub.L causing disablement of the circuit.
REFERENCES:
patent: 4003049 (1977-01-01), Sterzer
patent: 4031464 (1977-06-01), Norberg
Berger Richard E.
Christoffersen H.
Lazar Joseph D.
RCA Corporation
Smiley Raymond E.
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