Patent application number | Description | Published |
20130257485 | SYSTEMS, CIRCUITS, AND METHODS FOR A DIGITAL FREQUENCY SYNTHESIZER - Systems, methods, and circuits provide a digital frequency synthesizer where the output of the frequency synthesizer is a fractional factor of an input signal frequency. The digital frequency synthesizer may comprise a time to digital converter. A ramp offset signal may be added to the output of the time to digital converter. The ramp offset signal may be added to the output of a TDC until a reference dock signal reaches a value of pi. At such a point, the reference clock signal may be switched and the ramp offset signal may be restarted. As such, a frequency offset may be introduced at the input of the time to digital converter where the frequency offset may be modified by changing the slope of the ramp offset signal. | 10-03-2013 |
20130257494 | Systems, Circuits, and Methods for a Sigma-Delta Based Time to Digital Converter - Systems, methods, and circuits provide a time to digital converter comprising a sigma-delta modulator. The sigma-delta based time to digital converter may receive an analog signal representing a phase error between a reference clock signal and a feedback clock signal and generate a digital signal representing the phase error. The sigma-delta modulator may comprise a subtractor, an integrator, a feedback path, and a quantizer. The subtractor may receive the analog signal and subtract a feedback signal from the analog signal and the integrator may integrate the output of the subtractor. The sigma-delta modulator may accumulate a voltage or a charge over a capacitor as pulses are received from the analog signal and after a number of clock cycles, the capacitor may be discharged to generate a pulse in an output signal. | 10-03-2013 |
Patent application number | Description | Published |
20100218395 | APPARATUS AND METHOD FOR MICROWAVE VACUUM-DRYING OF ORGANIC MATERIALS - An apparatus and method for microwave vacuum-drying of organic materials, such as food products. The apparatus has a microwave vacuum chamber | 09-02-2010 |
20110027868 | APPARATUS AND METHOD FOR DEHYDRATING BIOLOGICAL MATERIALS - An apparatus for dehydrating a liquid sample of biological material has a microwave waveguide that is open to the atmosphere. It has a microwave generator, means for introducing a container of the material into the waveguide, means for evacuating the container, means for rotating the container and means for removing the container from the waveguide. It can include means for moving the container through the waveguide and for sealing it. In a dehydration method, a container of the liquid sample is put into the open waveguide, evacuated, rotated at high speed and microwaved. The container of dehydrated material is then removed from the waveguide. The apparatus and method are particularly suitable for dehydrating vaccines. | 02-03-2011 |
20110209354 | APPARATUS AND METHOD FOR DEHYDRATING BIOLOGICAL MATERIALS WITH FREEZING AND MICROWAVING - An apparatus and method for dehydrating biological materials, such as vaccines and microorganism cultures, in which the materials are dehydrated in an evacuated container which is in a microwave waveguide that is open to the atmosphere. The apparatus comprises means for freezing the container of biological material, a microwave generator, a waveguide, means for introducing the container into the waveguide, means for applying a vacuum to the container and means for removing the dehydrated material from the waveguide. In the method of the invention, the container of biological material is put in a microwave waveguide open to the atmosphere, a vacuum is applied to the container, the material is frozen and is radiated to dehydrate it. The dehydrated material is then removed from the waveguide. | 09-01-2011 |
20120291305 | MICROWAVE VACUUM-DRYING OF ORGANIC MATERIALS - An apparatus | 11-22-2012 |
20140328867 | MICROWAVE VACUUM-DRYING OF ORGANIC MATERIALS - An apparatus ( | 11-06-2014 |