A new digital attenuator system for hybrid computers
Phase shift miniature digital to analog converters for hybrid computers
Pracht, C. P.↗
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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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Modulator/demodulators for PSK Digital Data Systems
Video image data transmission using millimeter wave relay satellites - biphase and quadriphase modulator systems for phase shift keying
Source record↗
Radiative lifetimes and total transition probabilities for some polyatomic species
Radiative lifetimes and total transition probabilities measured in polyatomic gases using phase shift method and electron beam excitation
Smith, W. H.↗
On the scattering parameters of a reduced multiport
Reduced multiport equivalent scattering parameters derivation by matrix method, determining load reflection coefficients effect on signal attenuation and phase shift
Otoshi, T. Y.↗
Noniterative solutions of integral equations for scattering. I - Single channels
Scattering matrix noniterative integral solutions applied to singlet and triplet s-wave Hartree-Fock phase shifts for electron-H-atom scattering
Kouri, D. J.↗
Probabilities for radiation and predissociation. II - The excited states of CH, CD, and CH/plus/, and some astrophysical implications
CH, CD and CH ion excited states decay rates determined from phase shift and frequency data, discussing implications for astrophysics
Hesser, J. E.↗
Atomic transition probabilities - Ultraviolet multiplets of Zn I, II and Cd I, II
Radiative lifetime for atomic transitions in UV multiplets of zinc and cadmium atoms and ions measured using phase shift method
Baumann, S. R.↗
Magnetometers for space measurements over a wide range of field intensities
Fluxgate and Ru vapor magnetometers for space measurements over wide field intensities, reducing electronic phase shift and experiment weight
Ledley, B. G.↗
Circannual rhythm in level and timing of serum corticosterone in standardized inbred mature C-mice
Circannual rhythm in levels, amplitudes and acrophases of serum corticosterone in mice compared with phase shift after change of lighting regime
Halberg, F.↗
Radiative and predissociation probabilities for the OH A /2/sigma/plus/ state
Weak predissociation effects of hydroxyl compounds electron state on radiative lifetime via phase shift method
Smith, W. H.↗
Laser vibration analyzer
Instrument system uses laser and optical heterodyne receiver to measure Doppler phase shifts produced on a laser beam by the deflection of the vibrating surface of a structure under test or in operation.
Foster, J. V.↗
Vibration testing and analysis using holography
Time average holography is useful in recording steady state vibrational mode patterns. Phase relationships under steady state conditions are measured with real time holography and special phase shifting techniques. Data from Michelson interferometer verify vibration amplitudes from holographic data.
Source record↗
Molecular collisions. 16: Comparison of GPS with classical trajectory calculations of rotational inelasticity for the Ar-N2 system
Comparison of generalized phase shift treatment with classical trajectory calculations of rotational inelasticity cross sections of Ar-N2 scattering
Pattengill, M. D.↗
Radiative lifetimes of u.v. multiplets in atomic carbon, nitrogen, and oxygen
Radiative lifetimes of UV multiplets in atomic C, N and O, using modified phase shift technique
Hutchison, R. B.↗
Generalized Hylleraas calculation of positron-hydrogen scattering
Positron-hydrogen scattering below positronium pickup threshold by Hylleraas bound technique, discussing phase shifts and linear parameters
Bhatia, A. K.↗
Molecular collisions. XIV
Atom rigid rotor problem, applying generalized phase shift rotational excitation treatment in lowest approximation
Bernstein, R. B.↗
Differential input preamplifier
Preamplifier chops and amplifies very low level output of thermopile infrared detectors that will be used to measure thermal energy flux of Jupiter and its departure from a blackbody spectrum. Output signal has negligible phase shift. AC signal is RC-coupled to input stage of other amplifiers.
Callaway, P. W.↗
Advanced microelectronics research for space applications, phase 2
Negative-resistance circuits with possible space flight applications are discussed. The basic design approach is to use impedance rotation, i.e., the conversion from capacitance to negative resistance, and from resistance to inductance by the phase shift of the transistor current gain at high frequencies. The subjects discussed in detail are the following: hybrid fabrication of VHF and UHF negative-resistance stages with lumped passive elements; formulation of measurement techniques to characterize transistors and to extend the frequency of negative-resistance transistor amplifiers to higher microwave frequencies; and derivation of transistor characteristics required to increase the frequency range of negative-resistance transistor stages.
Gaertner, W. W.↗