Ronnekleiv
Erlend Ronnekleiv, Trondheirn NO
Patent application number | Description | Published |
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20090122319 | NON-UNIFORM SAMPLING TO EXTEND DYNAMIC RANGE OF INTERFEROMETRIC SENSORS - Methods and apparatus for interrogating optical sensors with high slew rates using non-uniform sampling are provided. The transmission of optical signals in a non-uniform pattern is employed to allow for demodulation of fringe rates exceeding the commonly understood Nyquist frequency limit given as one half of the mean sampling frequency. By monitoring the time dependent fringe frequency and assuming that the fringe frequency has a limited bandwidth, only a limited bandwidth smaller than the Nyquist bandwidth around the instantaneous fringe frequency needs to be reconstructed at any time. | 05-14-2009 |
Erlend Ronnekleiv, Trondheim NO
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20080291461 | METHOD AND APPARATUS FOR SUPPRESSION OF CROSSTALK AND NOISE IN TIME-DIVISION MULTIPLEXED INTERFEROMETRIC SENSOR SYSTEMS - Unwanted signal components in time-division multiplexed (TDM) systems may lead to crosstalk and noise if these pulses overlap with signal pulses from an interrogated sensor. The crosstalk and noise are dominated by interference between the signal pulses from the interrogated sensor and the unwanted signal components and can be greatly reduced by suppressing this interference signal. The unwanted signal components may include overlapping pulses originating from different sets of interrogation pulses (repetition periods). Modulating the phase or frequency between the repetition periods so that the unwanted interference signal does not appear at frequencies from which the phase of the interrogated sensor is demodulated suppresses this interference. Other unwanted signal components include leakage light during dark periods of the duty cycle of an interrogation signal. Modulating the phase difference between the interrogation signal and the leakage light suppresses the interference between the leakage light and the interrogation signal. | 11-27-2008 |
20090111417 | ADAPTIVE MIXING FOR HIGH SLEW RATES - A method and apparatus for demodulation of detected fringes from interferometric sensors with high slew rates are provided. A detected interference signal may be mixed with a local oscillator phasor to obtain a mixed signal, the local oscillator being controlled to produce a frequency that roughly matches the fringe frequency of the interference signal. A sensor phase estimate may be obtained from the detected interference signal or the mixed signal. The local oscillator signal can be computed from the sensor phase estimate. The mixed signal and the sensor phase estimate may be low pass filtered and decimated and the resulting decimated mixed signal and decimated sensor phase estimate may be processed and combined with moderate processing power requirements in an effort to accurately measure the sensor phase for the interferometric sensor. | 04-30-2009 |
Morten Ronnekleiv, Trondheim NO
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20100047158 | METHOD AND REACTOR FOR PRODUCTION OF HYDROGEN - A method for production of hydrogen including reforming of a carbon comprising fuel is provided together with production plants adapted for obtaining hydrogen at lower temperatures and/or higher pressures and obtaining a CO | 02-25-2010 |
Oline K. Ronnekleiv, Portland, OR US
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20080214609 | Development of new selective estrogen receptor modulators - The present disclosure concerns a new class of selective estrogen receptor modulators (SERMs). The disclosure also includes the identification of a previously unknown membrane associated estrogen receptor. Methods for making and using the disclosed SERMs are disclosed, including pharmaceutical formulations of the disclosed novel compounds in useful compositions. | 09-04-2008 |
20110152226 | Development of New Selective Estrogen Receptor Modulators - The present disclosure concerns a new class of selective estrogen receptor modulators (SERMs). The disclosure also includes the identification of a previously unknown membrane associated estrogen receptor. Methods for making and using the disclosed SERMs are disclosed, including pharmaceutical formulations of the disclosed novel compounds in useful compositions. | 06-23-2011 |