Coherently interruptible frequency hopped chirp generator

Details Coherently interruptible frequency hopped chirp generator Coherently interruptible frequency hopped chirp generator

1989-11-24

1991-05-28

Sotomayor, John B.

Communications: directive radio wave systems and devices (e.g.,

With particular circuit

For frequency modulation

342204, G01S 13522

Patent

active

050198254

ABSTRACT:
A coherently interruptible frequency hopped chirp waveform generator has a ignal generating synthesizer and a chirp generator with digitally stored chirp samples in which both are phase locked to a reference clock and responsive to a timing and control circuit. The digitally stored chirp signal sample is D/A converted and mixed with a fixed frequency signal generated by the synthesizer forming translated chirp signals. The translated chirp signals are output, being controlled by a timing and control circuit so that a plurality of coherently interruptible and frequency selectable chirp sub-pulses are formed.

REFERENCES:
patent: 3344426 (1967-09-01), Long
patent: 4123719 (1978-10-01), Hopwood et al.
patent: 4309703 (1982-01-01), Blahut
patent: 4739186 (1988-04-01), Crookshanks
patent: 4853701 (1989-08-01), Drabowitch
patent: 4866446 (1989-09-01), Hellsten
patent: 4875050 (1989-10-01), Rathi

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