Wide bandwidth traveling wave maser employing magnetic stagger tuning.
Traveling wave maser employing magnetic stagger tuning in small compact superconducting magnet achieves trading excess electronic gain for bandwidth
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Traveling wave maser employing magnetic stagger tuning in small compact superconducting magnet achieves trading excess electronic gain for bandwidth
Tuning range extension of klystrons used for pumping S-band traveling wave masers
Wind tunnel model vibration reduced by use of tuned vibration damping absorber on aircraft model
Tuning curves shapes for single fibers in auditory nerve of anesthetized cats
Sweep and marker generators tune and match antenna system in its operational environment. Sweep generator simulates transmissions over entire frequency range of the antenna receiving system. Marker generator identifies frequency points along the wave form displayed on oscilloscope.
Method and apparatus using temperature control for wavelength tuning of liquid lasers
Automatic tuning of superconducting cavity resonant frequency using optical feedback, discussing phase error processing and frequency deviation
Self-tuning filter automatically adjusts its center frequency to track signal frequency. This permits the use of a filter with a bandwidth smaller than the range of input signal frequencies.
Non-mechanical method for tuning liquid laser wavelengths involves electrically varying temperature of laser medium. Technique is used to investigate behavior of laser dyes, and may lead to broad, tunable, light source for spectroscopy measurements of long path absorption.
Automatic tuning system permits frequency synchronization between two hydrogen masers. System matches spaceborne clock performance with that of ground-based clock to test red shift theory. This system, used in conjunction with radio astronomy for long-baseline interferometer experiments, serves as a tool for investigation of distant universe phenomena.
Tuning arrangement for frequency control of magnetron-type electron discharge device
Mean square exceedance characteristics of single tuned system to amplitude modulated random noise of limited duration
Tunable CW optical parametric oscillator optimum operating conditions, using barium, sodium and lithium niobate crystals parametric fluorescence tuning curves for comparison
Dye laser electronic tuning by inserting calcium-molybdenum oxide acousto-optic filter into cavity
Electronically tunable lithium niobate filter utilizes acoustic-optic diffraction for tuning laser to desired frequencies. Filter placed inside laser cavity diffracts incident optical signal of one polarization into orthogonal polarization by collinearly propagating acoustic beam to desired wavelength.
A detailed account is given of efforts to develop a three layer, polychromic filter that can be tuned electronically. The operation of the filter is based on the cooperative alignment of pleochroic dye molecules by nematic liquid crystals activated by electric fields. This orientation produces changes in the optical density of the material and thus changes in the color of light transmitted through the medium. In addition, attempts to improve materials and devices which employ field induced changes of a cholesteric to a nematic liquid crystal are presented.
Low-cost, inductorless, high Q active-tuning circuit can be made by coupling pair of transistors and their supporting circuitry to take advantage of frequency dependent energy storage effects. Circuit may be manufactured by standard micro-electronic techniques; has very low noise factor; and input-output matching networks are not necessary.