ON SOLID-STATE CIRCUITS.
AIRBORNE INSTRUMENTS LAB DEER PARK N Y
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Results are presented of a study program to advance the state of the art in UHF limiters, octave-band ferrite circulators, and low-noise receivers having linear phase response suitable for pulse-compression applications. Two practical varactor limiters were developed -- a broad-band configuration octave range using a PN diode, and a low threshold ultra-dynamic range configuration. The broad-band limiter was successfully tested at high pulse powers using a 1-megawatt radar. Its burnout energy was in excess of 87,000 ergs, provided 30 db of protection, had a recovery time of 0.5 micrneconds, and did not exhibit any spike leakage. The low-threshold limiter had a limiting level of less than -20 dbm, an insertion loss of less than 2 db, and a dynamic range of about 70 db. A comprehensive theoretical and experimental technique was developed that was applied to the design anddevelopment of octave-wide Y-junction ferrite circulators. These circulators had isolations of greater than 20 db, SWRs of less than 1.4, and insertion losses of about 0.5 db over the complete octave range. Author