Abstract: Disclosed herein is a variable capacitor and its driving method, the variable capacitor including, a movable first electrode; and a second electrode formed with an insulating film, fixed in place, and its insulating film contacting the first electrode that is moved.

Abstract: Disclosed is a MEMS variable capacitor, the capacitor including a first electrode, a second electrode that is floated on an upper surface of the first electrode, and a third electrode capable of variably-adjusting a capacitance value by adjusting a gap between the first electrode and the second electrode.

Abstract: Disclosed herein is an MEMS variable capacitor and its driving method, the MEMS variable capacitor including, a first electrode, a second electrode floating over the first electrode upper part, a fixed electrode separated at the second electrode side surface, and a drifting electrode placed between the second electrode and the fixed electrode, connected to the second electrode, and physically contacting the fixed electrode by a voltage applied to the fixed electrode.

Abstract: An apparatus and method for matching impedance of an antenna by using Standing Wave Ratio (SWR) information is provided. While the impedance of the impedance matching unit is controlled, a region of a Smith chart in which initial total impedance of the impedance matching unit and the antenna is located by using an SWR calculated by an SWR operation unit, and the impedance of the impedance matching unit is controlled according to the determined region, thus correctly matching the impedance of the antenna.

Abstract: Provided is a transmission and reception signal detecting apparatus, which includes a directional coupler and a signal detecting part. The directional coupler includes a first port and a second port. The signal detecting part is connected to the first and second ports of the directional coupler and detects an output of a first signal transmitted through the first port and an output of a second signal transmitted through the second port. The signal detecting part is connected to the first port under a first operation condition. The signal detecting part is connected to the second port under a second operation condition.

Abstract: The present application describes a composition that includes an extract of Gynostemma pentaphyllum used to treat insulin resistance syndrome, obesity, hypertriglyceridemia, as well as decrease body fat mass.

Abstract: A method and an apparatus for removing particulate contaminant are provided in order to ensure high purity during a tungsten suicide deposition process. The method for removing particulate contaminant in tungsten silicide deposition process using SiH4 as silicon source gas and NF3 as cleaning gas, includes purging a carrier gas line for an SiH4 silicon source gas to remove the contaminant in the chamber and carrier gas line when the carrier gas is supplied with the chamber, and the NF3 cleaning gas is supplied to the chamber to form plasma. After a plasma cleaning, the gas line flowing reaction gas responding to the SiH4 is purged to remove the contaminant in the chamber and the reaction gas line. As a result, any particulate contaminant is removed or remains at a minimum level that has no effect on the tungsten silicide deposition process.