Signal injection circuit for radar gain and noise tests

Communications: radio wave antennas – Antennas – Balanced doublet - centerfed

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Details

434 2, G01S 740, G01S 1300

Patent

active

043296882

ABSTRACT:
A circuit injects the signal from a stable localized oscillator past a pin diode switch through a first circulator to a waveguide, a second circuit injects a noise signal from a generating diode through a second circulator to the first circulator to the waveguide, a switching system causes the diodes to function in a coordinated manner.

REFERENCES:
patent: 4053890 (1977-10-01), Woodson et al.

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