Multiple de-Q-ing circuit for a moving target indicator radar sy

Details Multiple de-Q-ing circuit for a moving target indicator radar sy Multiple de-Q-ing circuit for a moving target indicator radar sy

1973-12-03

1976-05-04

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307264, 328 67, 328147, H03K 501

Patent

active

039551067

ABSTRACT:
The specification discloses a semiconductor magnetic modulator for use with a moving target indicator radar transmitter and which utilizes a plurality of charging capacitors for receiving charging current from a direct current power source and discharging in parallel. Silicon controlled rectifiers are connected to each of the charging capacitors and are operable to triggering signals to cause said capacitors to discharge at a predetermined time. A de-Q-ing circuit is connected to each of the charging capacitors in order to sense the voltage level across the capacitors and to dissipate voltage above a predetermined threshold level. The charging capacitors discharge through a hold-off inductor and through a switching transformer to a pulse forming network including a second charging capacitor. Compression occurs in the pulse charging network and a resulting high power modulator pulse is applied from the network to a klystron power tube in a moving target indicator radar transmitter. The power supply for the modulator utilizes an SCR bridge A.C. to D.C. convertor. An automatic delay circuit is also provided in order to provide a stable radar modulator trigger signal to the modulator circuit.

REFERENCES:
patent: 3119968 (1964-01-01), Schonberg
patent: 3139585 (1964-06-01), Ross et al.
patent: 3363184 (1968-01-01), Smith
patent: 3716798 (1973-02-01), O'Loughlin

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