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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Broadband power detector assembly measures electromagnetic radiation in the 50 to 30,000 GHz band. The assembly includes a matched pair of detectors which incorporate thin-film radiation absorbers. The detector is effective with either coherent or incoherent radiation.
Center-tap push-pull transformer with toroidal core helically wound with a single coaxial cable creates a high frequency wideband transformer. This transformer has a high-turn ratio, a high coupling coefficient, and a flat broadband response.
Binaural unmasking of tones masked by broadband Gaussian noise including theoretical work on equalization and cancellation model
A shortened horn-reflector antenna overcomes the mechanical disadvantages and complexity of the conventional horn-reflector antenna. The shortened antenna offers broadband performance, economic construction, very low antenna temperature, and excellent pattern performance.
Properties of the Brewster angle and internal reflection in a dielectric prism are proposed as the basis of a new type of element for use in oversize waveguide in quasi-optical microwave components. Waveguide loss is reduced and precision broadband attenuators, phase shifters, and directional couplers can be constructed on the basis of the properties.
Broadband interference tests on Saturn V prototype internal work lamps
Calorimetric measurement of source and broadband spectral absorptances of spacecraft thermal control coatings during exposure to UV in vacuum environment
High speed klystron cathode pulser requires low voltage to generate high-voltage pulses. Broadband video transformers are wound in two configurations - /1/ transmission line, multifilar toroids and /2/ loop coupling toroids. The circuit adapts to generate high-speed, high-voltage, high-stability power pulses at megawatt levels.
Portable laser heterodyne system for broadband measurement of structural vibrations and calibration of electromechanical transducers
Omnidirectional microwave parallel plate broadband antenna for spacecraft communications
Broadband noise and CW signal interference effect on satellite tracking by Minitrack system due to presence of undesired satellite
Artificial production of broadband VLF hiss by means of Cerenkov radiation process as side effect of electron accelerator aurora generating experiment
Multilayer infrared beamsplitter film system on a potassium bromide crystal substrate is operational over a wavelength range of 2.5 to 25 microns with nearly equal broadband reflectance and transmittance. It is useful in optical coating, vacuum deposition, radiometry, interferometry, and spectrometry.
Photoelectric monitoring broadband photometry and spectral scans of candidate star for pulsating radio source CP 1919
Broadband photometry for circumstellar IR emission from cool stars, considering giant and carbon stars
Noise level perception and subjective judgments for broadband noise with single, modulated and multiple tones, considering tone correction procedures
Omnidirectional microwave parallel plate waveguide fed antenna design for flush mounted broadband spacecraft, noting equatorial and polar patterns