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Chromatic Modulator for a High- Resolution CCD or APS
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Date added: 06/01/2008 |
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The color modulator is created by aligning a triple colored strip filter array (with strip pitch equal the displacements) in such a frame with discrete color strips covering different linear rows of pixels in an underlying imaging array. |
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Cup Cylindrical Waveguide Antenna
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Date added: 06/01/2008 |
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The cup cylindrical waveguide antenna (CCWA) is a novel type of short backfire antenna. The CCWA is a dual reflector system consisting of a circular waveguide feed, circular disk subreflector, and a circular cup. The innovators developed this antenna as a potential candidate for the Tracking and Data Relay Satellite System. |
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Charge-Control Unit for Testing Lithium- Ion Cells
hot!
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Date added: 06/01/2008 |
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The innovation is a lithium-ion cell charge control unit. The unit allows multiple lithium-ion battery cells in a series-connected pack to charge independently of each other when being charged from a single current source. The charge circuitry is "self-powered," drawing a minute amount of power from each of the battery cells being regulated. |
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Cluster Inter-Spacecraft Communications
hot!
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Date added: 06/01/2008 |
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A new kind of dynamics that displays non-Newtonian properties such as self-generated randomness and entanglement of different samples of the same stochastic process has been introduced. These novel phenomena result from a feedback from the Liouville equation to the equation of motion that is similar (but not identical) to those in quantum mechanics. |
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Three-Stage InP Submillimeter-Wave MMIC Amplifier
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Date added: 05/01/2008 |
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This work is aimed at pushing the MMIC and transistor technologies toward higher frequencies and, at these higher frequencies (>300 GHz), a wealth of spectral lines of molecular species exist and could be studied with more sensitive receivers. |
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Fast Offset Laser Phase-Locking System
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Date added: 05/01/2008 |
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An earlier phase-locking system was difficult to use. The system described here has higher performance and stability than previous systems. It is easier to use, programmable, and flexible. Because it is based on a field programmable gate array (FPGA), and operates almost entirely digitally, it is easily adaptable to many different systems. |
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Solid-State High-Temperature Power Cells
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Date added: 05/01/2008 |
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All-solid-state electrochemical power cells have been fabricated and tested in a continuing effort to develop batteries for instruments for use in hot environments. Batteries of this type are needed for exploration of Venus, and could be used on Earth for such applications as measuring physical and chemical conditions in geothermal wells and oil wells, processing furnaces, and combustion engines. |
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24-Way Radial Power Combiner/Divider for 31 to 36 GHz
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Date added: 05/01/2008 |
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A higher order (N=24) of power combining using a novel radial power combiner has been demonstrated that also exceeds a 15% bandwidth (31 to 36 GHz) due to the incorporation of a new implementation of a ‘Marie’ mode transducer. |
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Architecture for a High-to-Medium- Voltage Power Converter
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Date added: 05/01/2008 |
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The novel idea in this technology is the approach used for
interconnecting and control of a large number of low-voltage, high-frequency, PWM, isolated dc-to-dc converters. |
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Coaxial Electric Heaters
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Date added: 04/01/2008 |
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We report a simple and cost-effective device designed for heating spectroscopical cells. The main features of our heater are its small size and coaxial configuration, as well as the mechanical flexibility. |
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