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Compensating bandwidth switching transients in an amplifier circuit Patent
Phase locked demodulator with bandwidth switching amplifier circuit
Digital memory sense amplifying means Patent
Digital magnetic core memory with sensing amplifier circuits
Spacecraft Integrated Parametric Amplifier Development
Integrated solid state C band parametric amplifier for use in space shuttle communication receiver
Microwave traveling wave tube amplifiers for space communications systems
High power microwave traveling wave tube amplifiers for space shuttle communications and tracking systems
Experimental verification of the design of an axial injection crossed-field amplifier
Design of S band axial injection cross field amplifier for satellite borne transmitter
A high power, high efficiency crossed-field amplifier
Design concepts providing high plate efficiency in high power injected beam crossed field amplifier capable of CW operation with conduction or liquid cooling
Optimum efficiency of a cascade of low-gain amplifiers
Low gain microwave amplifier cascade DC to RF conversion efficiency analysis
EEG electrode-amplifier harness
Astronaut electrode-amplifier helmet harness for cable and radiotelemetry acquisition of EEG, EGO, EMG and blood pressure data on noninterference basis
Output pulse amplitude from lithium-drifted detector-amplifier combination under conditions of carrier diffusion and bulk and surface recombination
Output pulse amplitude from lithium-drifted detector-amplifier combination under conditions of carrier diffusion and bulk and surface recombination
A versatile pulse amplifier
Versatile pulse amplifier for use with scintillation counters, surface barrier detectors, proportional counters or channel electron multipliers
Integrated parametric amplifier module with self-contained solid-state pump source
Integrated S band microstrip parametric amplifier modules with self contained Gunn effect pump oscillator for space flight applications
Possibility of a unidirectional laser amplifier produced by monochromatic optical pumping of a coupled Doppler-broadened transition
Unidirectional gas laser amplifier using monochromatic optical pumping of coupled Doppler broadened transition
A Differential ECG Amplifier with Single-Ended Output
Three-stage amplifier is used for ECG measurements which require conversion of differential input to single-ended output. Circuit may be useful in biological telemetry for amplification of signals from specimen-implanted sensors.
Arc protection system for high-power RF amplifiers
Protective system prevents damage or destruction of high-power RF amplifiers by arcs which may occur in output transmission line. Advantages of system are listed.
S-band microcircuit power amplifier
Research, design, development, and fabrication of a two-stage, solid-state, microcircuit power amplifier operating in the 2.25 GHz region of the S-band are summarized. Output is typically 7.0 watts for an input of approximately 400 mw. Input stage is an MSC 3001 transistor; output stage is an MSC 3005 transistor. Input VSWR is 1.4:1.0, or less. Efficiency of 33.3 percent or more is achieved. Second and third harmonic suppression is 30 db. Operating power is 28 VDC. The entire unit has a length of 3.80 inches, a width of 2.08 inches, and a height of 1.00 inch.
A wide-band Gunn-effect CW waveguide amplifier.
Broad-band CW amplification with Gunn diodes in waveguide circuits has been obtained, with power gains typically between 10 and 15 dB and half-power bandwidths of more than 1 GHz. It is found that amplifier performance can be modeled with fair accuracy using a rough characterization for the diode parameters.
Isolated output for class-D dc amplifiers
Transformer-coupled output stage is used with pulse-width modulated class-D dc amplifiers. Circuit is comprised of two channels corresponding to negative and positive input signals. Amplitude of secondary-current triangular pulse is function of duration of driving pulse. Therefore, circuit converts pulse-width modulated driving signal to pulse-amplitude modulated signal.