Accession Number : ADD005566
Title : Proximity Fuze Jammer.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C
Personal Author(s) : Marinaccio,Richard E ; Meier,Ward M
Report Date : 17 Oct 1978
Pagination or Media Count : 4
Abstract : This patent describes a system for jamming continuous wave radar type proximity fuzes used on surface-to-air missiles where the fuze requires an increase in return signal power level and a rapid frequency change for detonation. The system basically includes a receiver, amplifier, and transmitter. A received fuze signal is filtered and square wave modulated then sent to a first traveling wave tube for amplification. The signal is then amplified again by a second traveling wave tube which is modulated by a transit time modulator which continuously varies the phase shift through the tube in a linear fashion. The linear variation in phase shift is the equivalent of a displacement in the frequency signal being amplified. The signal is then reradiated to the missile giving the fuze a target sensing causing it to predetonate.
Descriptors : *Patents, *Proximity fuzes, *Radio jamming, Jamming, Pin diodes, Traveling wave tubes, Modulators, Pulse modulation
Subject Categories : Radio Countermeasures
Ammunition and Explosives
Distribution Statement : APPROVED FOR PUBLIC RELEASE