SRD frequency multipliers Interim report
Switching circuits, shunt and series step recovery diode frequency multipliers, and special tests
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Switching circuits, shunt and series step recovery diode frequency multipliers, and special tests
Triaxial electron spectrometer, mounted on OGO-E SPACECRAFT, measures flux and energy distributions of electrons, noting electron multiplier
Equivalent circuit evaluation of theoretical potential and limitations of millimeter wave semiconductor diode detectors, mixers and frequency multipliers
Gain improvement to electron multiplier used in mass spectrometers
Continuous channel electron multiplier operated in pulse saturated mode, noting space charge limiting as major cause of gain saturation
Solid state frequency multipliers for LEM landing and rendezvous
Development of coherent fractional frequency multiplier for S-band
Lagrange multiplier method applied to elastic stability problems of rectangular plates and orthotropic cylindrical shells
Operational characteristics of dynode electron strip multipliers
Explicit solution for Lagrange multipliers in optimal thrust programming and steering problem
Lagrange multipliers in two-point boundary condition problems for trajectory optimization estimated by direct method
Electron multiplier detection efficiency for positive ions determined as function of incoming ion energy, velocity and degree of ionization
Substantial proress has been made recently in the advancement of solid state terahertz sources using chains of Schottky diode frequency multipliers. We have developed a harmonic balance simulator and corresponding diode model that incorporates many other factors participating in the diode behavior.
Multiplier device fabrication techniques have been developed to enable robust implementation of monolithic circuits well into the THz frequency range.
The design and analysis of varactor diode doubler, quadrupler and cascaded doubler circuits for 320 and 640 GHz have been completed. A new approach has been employed to produce a tunerless waveguide mount with a very flexible, frequency scaleable, MMIC style multiplier circuit. The concept, design, predicted performance and measurements on some of the constituent mount elements are presented.
The authors report on the design, analysis and performance of an all GaAs MMIC multiplier for use at submillimeter wavelengths.
A novel analog muliplier using SOI four-gate transistors (G4-FETs) is presented. Thanks to the multiple inputs of the G4-FET that may be biased independently, the number of transistors in the proposed circuit is dramatically reduced, compared to conventional single-gate MOSFET based multipliers.