Patent application number | Description | Published |
20090066438 | IMPEDANCE MATCHING METHODS AND SYSTEMS PERFORMING THE SAME - Provided are an impedance matching method and a matching system performing the same. The method includes: measuring an electrical characteristic of the power transmission line; determining a pulse mode of the power source; extracting a control parameter for impedance matching from the electrical characteristic of the power transmission line; and controlling the matching system through the control parameter, wherein the matching system is controlled differently according to the pulse mode. | 03-12-2009 |
20090183834 | PLASMA GENERATION APPARATUS - A plasma generation apparatus includes: a chamber having a chamber lid and defining an airtight reaction region; a susceptor in the chamber; a gas supply means supplying a process gas to the chamber; and a toroidal core vertically disposed with respect to the susceptor through the chamber lid, comprising: a toroidal ferromagnetic core combined with the chamber, the toroidal ferromagnetic core having a first portion outside the chamber and a second portion inside the chamber, the second portion having an opening portion; a radio frequency (RF) power supply connected to the chamber; an induction coil electrically connected to the RF power supply, the induction coil rolling the first portion; and a matching circuit matching an impedance between the RF power supply and the induction coil. | 07-23-2009 |
20110027845 | ENHANCED ETHANOL AND BUTANOL PRODUCING MICROORGANISMS AND METHOD FOR PREPARING ETHANOL AND BUTANOL USING THE SAME - The present invention relates to a recombinant microorganism having an enhanced ability to produce ethanol and butanol and a method for preparing ethanol and butanol using the same, and more particularly to a recombinant microorganism having an enhanced ability to produce ethanol and butanol, into which a gene encoding CoA transferase and a gene encoding alcohol/aldehyde dehydrogenase are introduced, and to a method for preparing ethanol and butanol using the same. The recombinant microorganism according to the present invention, obtained by manipulating metabolic pathways of microorganisms, is capable of producing butanol and ethanol exclusively without producing any byproduct, and thus is useful as a microorganism producing industrial solvents and transportation fuel. | 02-03-2011 |
20110241937 | APPARATUS AND METHOD FOR SIGNAL ACQUISITION IN GLOBAL NAVIGATION SATELLITE SYSTEM RECEIVER - An apparatus for signal acquisition of a Global Navigation Satellite System (GNSS) receiver may downsample digitalized satellite signals based on a code resolution, correlate the downsampled satellite signals and oversampled pseudo-random noise (PRN) codes using a block unit based on a size of a matching filter, and may perform FFT of a value output as a correlation result by employing, as M points, a number of blocks used for the matching filter. Also, the signal acquisition apparatus may estimate a coarse Doppler and a code phase of the satellite signals by comparing a power value, calculated based on the M-point fast Fourier transformed value, with a threshold value, and may estimate a fine Doppler using zero-padding based FFT when the satellite signals are successfully acquired. | 10-06-2011 |
20120223697 | SENSOR FOR MEASURING ELECTRICAL CHARACTERISTICS - Provided is a sensor for measuring electrical characteristics. The sensor includes a printed circuit board defining a round through-hole into which a power transmission line is inserted; a voltage sensor including a ring-shaped electrode and a first terminal portion to measure a voltage formed in the power transmission line, the electrode being fixed against the inner periphery of the through-hole to measure a voltage formed in the power transmission line, and the first terminal portion having one end in contact with one side of the electrode and the other end exposed through one side of the printed circuit board; and a current sensor including a pickup coil and a second terminal portion to measure current flowing in the transmission line. | 09-06-2012 |
20120306367 | IMPEDANCE MATCHING APPARATUS - Provided is an impedance matching apparatus for matching impedance to a plasma load. The impedance matching apparatus includes a first frequency impedance matching circuit unit that transfers an output of a first frequency RF power source unit, operating at a first frequency, to the plasma load; and a second frequency impedance matching circuit unit that transfers an output of a second frequency RF power source unit, operating at a second frequency higher than the first frequency, to the plasma load. The first frequency impedance matching circuit unit includes a T-type matching circuit, and the second frequency impedance matching circuit unit includes a standard L-type matching circuit or Π-type matching circuit. | 12-06-2012 |
20140130980 | PLASMA GENERATION APPARATUS AND PLASMA GENERATION METHOD - Provided are a plasma generation apparatus and a plasma generation method. The plasma generation apparatus includes a chamber including a dielectric window and a toroidal discharge space, a magnetic core disposed to surround a portion of the chamber, an induction coil disposed to wind the magnetic core, and a waveguide radiating a microwave through the dielectric window. Alternating current flowing in the induction coil forms a magnetic flux at the magnetic core, and the magnetic flux generates inductively-coupled plasma. A microwave propagating along the waveguide generates microwave plasma inside the chamber. | 05-15-2014 |
20140249280 | POLYSILOXANE-POLYCARBONATE COPOLYMER AND METHOD OF MANUFACTURING THE SAME - The present invention relates to a polysiloxane-polycarbonate copolymer and a method of manufacturing the same. More specifically, the present invention relates to a polysiloxane-polycarbonate copolymer in which the molecular weight of the siloxane monomer constituting the copolymer is maintained in a specifically high level and thus excellent low-temperature impact resistance can be achieved even with low siloxane content, and the viscosity of the copolymer is maintained in a low level and thus flowability and moldability can be improved; and a method of manufacturing the same. | 09-04-2014 |