Patent application number | Description | Published |
20090315643 | FILTER DEVICE - A high frequency filter includes an inductor, a serial resonance circuit including an inductor and capacitors, a serial resonance circuit including an inductor and capacitors, and a varactor diode connected between a connection point between the capacitor and the capacitor and a connection point between the capacitor and the capacitor. A controller simultaneously changes two attenuation pole frequencies of the filter device by changing a capacitance of the varactor diode. | 12-24-2009 |
20100243645 | SPREAD-SPECTRUM HIGH-FREQUENCY HEATING DEVICE - A variable-frequency oscillator | 09-30-2010 |
20100291946 | HIGH-FREQUENCY FILTER - A digital television broadcast receiving section ( | 11-18-2010 |
20110168695 | RADIO-FREQUENCY HEATING APPARATUS AND RADIO-FREQUENCY HEATING METHOD - A radio-frequency heating apparatus according to an aspect of the present invention includes: radio-frequency power generation devices ( | 07-14-2011 |
20120103972 | HIGH-FREQUENCY HEATING DEVICE AND HIGH-FREQUENCY HEATING METHOD - A radio-frequency heating apparatus includes a radio-frequency power generation unit ( | 05-03-2012 |
20120103975 | RADIO-FREQUENCY HEATING APPARATUS AND RADIO-FREQUENCY HEATING METHOD - A radio-frequency heating apparatus of the present invention includes: a phase varying unit ( | 05-03-2012 |
20140300422 | HIGH OUTPUT POWER AMPLIFIER - A high-output electric power amplifier using a depression-type FET includes a drain voltage supply portion adapted to create a positive voltage to be applied to a drain terminal in the depression-type FET, and a gate bias voltage supply portion adapted to create a negative voltage to be applied to a gate terminal in the depression-type FET, wherein the drain voltage supply portion uses an external commercial power supply as an electric power source, and the gate bias voltage supply portion uses a battery as an electric power source, in order to certainly prevent breakdowns of the FET due to excessive electric currents. | 10-09-2014 |
20140361009 | MICROWAVE HEATING DEVICE - A microwave heating device mountable to an electric device, includes: a commercial power supply; an AC/DC converter which outputs a plurality of DC voltages according to power supplied from the commercial power supply; a controller which receives power from the AC/DC converter and totally controls the electric device; a microwave processing device using a compound semiconductor which receives a plurality of outputs of the AC/DC converter and outputs a microwave; and a plurality of loads connected between, of the DC voltages output from the AC/DC converter, a predetermined Vd voltage and ground through a plurality of contacts. The loads form a group of electric components in the electric device. The controller controls power supply to the loads, and controls on/off of the contacts to drive the loads by the Vd voltage regardless of the voltage of the commercial power supply. | 12-11-2014 |