摘要:
Disclosed herein are techniques, systems, and methods relating to compensation of phase disturbances of a phase lock-loop during power ramp up or down of a power amplifier. More specifically, a phase lock-loop is described that is able to switch between type I and type II PLL modes depending on the power state of the power amplifier without introducing additional disturbances.
摘要:
A feedback loop is used to determine phase distortion created in a signal by directly extracting the phase distortion information from a feedback signal using original frequency modulation information.
摘要:
The invention relates to a polarization compensating element (PCE) for a liquid crystal, e.g. liquid crystal on silicon (LCoS), display system manufactured using a linearly photo-polymerizable polymer (LPP) for orienting a photo-polymerizable liquid crystal polymer (LCP) film. To decrease the reflection, polarization conversion, and interference events in an LPP/LCP assembly the ΔN birefringence value of the LCP material is minimized. Dielectric coatings are added at various locations throughout the assembly for minimizing the amount of reflection, polarization conversion, and interference effects and for suppressing spatial retardance ripples.
摘要:
A digitally controlled oscillator device includes a programming input, a selection input and an oscillator core with a first capacitive element which is frequency determining and programmable. The first capacitive element is coupled to the programming input that receives a first data word by which an oscillating frequency of the oscillator device is programmed with a predetermined frequency step size. The oscillator device further includes a selection unit for selecting a mode which is coupled to the selection input that receives a mode selection signal. The mode is selectable from a plurality of modes depending on the mode selection signal and each mode from the plurality of modes is characterized by a predetermined frequency step size. The digitally controlled oscillator device also includes a deattenuation amplifier.
摘要:
A vacuum valve comprises a conical sealing surface arranged at a valve body, a valve disk at which a conical sealing surface is arranged, and a sealing ring having a first sealing surface and a second sealing surface. The valve disk, the valve body and the sealing ring are made of metal at least in the areas of the sealing surfaces. The valve disk is constructed so as to be curved or angled considered in axial section through the center and encloses an angle of less than 90° with the closing direction in the unloaded state at least in a radial outer portion adjoining the sealing surface. The valve disk has an elasticity such that a displacement of the radial outer edge of the valve disk relative to a point in the center of the valve disk of at least 0.1% of the diameter of the valve disk in direction of the center axis of the valve disk is bought about in the closed position of the valve disk relative to the open position of the valve disk by an elastic deformation of the valve disk.
摘要:
A method serves for the determination of the 3D coordinates of an object (2). A fringe pattern is projected onto the object (2) in the method. The light reflected by the object (2) is recorded and evaluated. To improve such a method, the fringe pattern is projected onto the object (2) by an imaging element (only FIGURE).
摘要:
A method for detecting analytes in a liquid is provided in which the liquid is subjected to a mixing treatment on an area of a support which has in particular immobilized reactants, wherein in the mixing treatment the liquid is impinged upon by a stream of gas that sweeps across at least some areas of the support surface in a scanning manner by means of a jet directed towards the support surface. The invention also concerns a method for mixing a liquid sample comprising an analyte and a device for carrying out the method.
摘要:
A sigma-delta modulator is supplied with a data word and includes a first and at least one further modulation stage, each having at least two adders. The adders in the first modulation stage process a low-significance component and a delayed more significant component of the data word and provide a result word and a carry at their respective outputs. The adders in the at least one further modulation stage process a low-significance component and a more significant component of the result word and provide a further result word and a carry at their respective outputs. The low-significance component and the more significant component of the result word are provided to the further modulation stages with an unvarying delay. A bit stream is derived from a carry from final instances of the at least two adders in the first modulation stage and in the further modulation stage respectively.
摘要:
An anti-moisture and soil-repellent coating and a method of preparing the same includes a fluorinated alkyl ether polymer having a functionalized silane that is applied to a non-oxide surface. Advantageously, the instant invention provides a durable anti-moisture and soil-repellant coating for relatively inert surfaces, such as MgF2, without the need for a primer layer.
摘要翻译:防潮和防污涂层及其制备方法包括具有施加到非氧化物表面的官能化硅烷的氟化烷基醚聚合物。 有利地,本发明为不需要底漆层的相对惰性的表面提供耐久和防污染的涂层,例如MgF 2 N 2。
摘要:
Methods and Apparatus are provided for a power supply capable of being operated directly from fluorescent lighting fixture and capable to functioning properly when supplied by conventional 60 cycles per second (cps) “Core and Coil’ fluorescent lamp power supply (ballasts) as well as ‘Electronic’ or ‘Solid State’ ballasts functioning at frequencies from 20,000 cps to as much as 40,000 cps, without adversely affecting normal lighting fixture operation.