Miniature doppler radar systems and microwave receivers suitable

Details Miniature doppler radar systems and microwave receivers suitable Miniature doppler radar systems and microwave receivers suitable

1977-02-08

1978-12-26

Hubler, Malcolm F.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

G01S 944

Patent

active

041318897

ABSTRACT:
A doppler radar system comprises a solid state microwave source which is pulsed on and off with a duty cycle typically around 10.sup.-3. The microwaves are transmitted towards a nearby target with a small amount supplied to a mixer also supplied with signals received from the target. The mixer output is passed through a gate opened in coincidence with the mixer pulsed output, and supplied to an integrator whose output forms a doppler signal representing target velocity. Target directionality is found by providing two channels fed in quadrature phase.

REFERENCES:
patent: 3217323 (1965-11-01), Fackler et al.
patent: 3234548 (1966-02-01), Colby, Jr.
patent: 3314065 (1967-04-01), Steigerwalt et al.
patent: 3432855 (1969-03-01), Kalmus
patent: 3727227 (1973-04-01), Takao et al.
patent: 4012730 (1977-03-01), Nicholls
patent: 4035798 (1977-07-01), Hackett

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