Engineering topics
Publications and source records attributed to Cohn, M..
Distortions can be greatly reduced in narrow-band applications by using the second harmonic. The ac behavior of simplified diode amplifier has negative resistance depending on slope of equivalent I-V curve.
A proposed solid-state K sub u-band power amplifier utilizing a circularly symmetric array of IMPATT diodes mounted in a single radial line power combiner is discussed and its performance predicted. The proposed amplifier configuration consists of a TM sub 030 mode radial line cavity containing 20 IMPATT diodes, with separate input and output ports provided by a ferrite circulator. Conventional IMPATT amplifier techniques preclude the achievement of gain, power output, efficiency, and IMP suppression specifications simultaneously; there fore, several novel techniques with the potential of reducing the intermodulation product level are discussed.
Digital circuit produces rational output pulse rate at fraction of continuous input pulse rate. Output pulses have average rate with least possible deviation from absolute correct time spacing. Circuit uses include frequency synthesizing, fraction generation, and approximation of irrational sequences.
Mathematical expression for phase and amplitude distribution in focal plane of aperture
Fabrication, properties, and application of metal nitride semiconductor/variable threshold transistor memory device
All solid-state superheterodyne Dicke radiometer for submillimeter wavelengths
Equivalent circuit evaluation of theoretical potential and limitations of millimeter wave semiconductor diode detectors, mixers and frequency multipliers
Two ferroelectric bolometer sensing elements measure low rf absolute power at millimeter and submillimeter wavelengths. The sensing elements are mounted in sections of waveguide and connected in series in a standard temperature compensating bridge circuit.
Development of 560 GHz fourth harmonic mixer and 140 GHz third harmonic generator for use in radiometer
High thermal sensitivity 100 to 300 gc radiometers with 4 mm reflex klystrons as local oscillator sources for operation in the 2.1 and 1.3 mm atmospheric absorption region
Development of techniques for superheterodyne receiver