| Patent application number | Description | Published |
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| 20140139274 | BIPOLAR TRANSISTOR FREQUENCY DOUBLERS AT MILLIMETER-WAVE FREQUENCIES - Methods for frequency multiplying include receiving a signal having an input frequency at a frequency multiplier comprising a pair of transistors; and selecting a harmonic in the signal by connecting the transistors to a common impedance through a respective collector impedance, wherein an output frequency at the harmonic between the collector impedances and the common impedance is an even integer multiple of an input frequency. | 05-22-2014 |
| 20140140450 | BIPOLAR TRANSISTOR FREQUENCY DOUBLERS AT MILLIMETER-WAVE FREQUENCIES - Frequency multipliers include a pair of transistors each connected to a common impedance through a respective collector impedance formed from a transmission line. Each transmission line has a length between about one quarter and about one eighth of a wavelength of an input signal frequency and is tuned to produce a large impedance at a collector of the respective transistor at the input signal frequency. The output frequency between the collector impedances and the common impedance is an even integer multiple of the input frequency. | 05-22-2014 |
| 20140266329 | FREQUENCY QUADRUPLERS AT MILLIMETER-WAVE FREQUENCIES - A symmetric frequency multiplier includes four non-linear devices configured to receive an input signal having a fundamental mode and to provide an output having one or more harmonics; and three collinear transmission lines, each having a length of about one quarter of an input wavelength, configured to receive the outputs of the non-linear devices and configured to combine bifurcated components of the signals from the non-linear devices into two frequency-multiplied output signals. Two of the signals from the non-linear devices are provided at respective ends of the collinear transmission lines and two of the signals from the non-linear devices are provided between transmission lines, such that each of the bifurcated components of a given signal passes through a different subset of the transmission lines. | 09-18-2014 |
| 20140266330 | FREQUENCY QUADRUPLERS AT MILLIMETER-WAVE FREQUENCIES - Methods for increasing a signal frequency include generating two or more signals having a fundamental mode and one or more harmonics; phase shifting bifurcated components of the two or more signals in transmission lines; and combining the bifurcated components to create an output signal that cancels a fundamental mode, a second harmonic, and a third harmonic in the signals to produce a frequency-multiplied output signal. | 09-18-2014 |
| 20150130517 | BIPOLAR TRANSISTOR FREQUENCY DOUBLERS AT MILLIMETER-WAVE FREQUENCIES - Frequency multipliers include a pair of transistors each connected to a common impedance through a respective collector impedance formed from a transmission line. Each transmission line has a length between about one quarter and about one eighth of a wavelength of an input signal frequency and is tuned to produce a large impedance at a collector of the respective transistor at the input signal frequency. The output frequency between the collector impedances and the common impedance is an even integer multiple of the input frequency. | 05-14-2015 |
| 20150155858 | BIPOLAR TRANSISTOR FREQUENCY DOUBLERS AT MILLIMETER-WAVE FREQUENCIES - Methods for frequency multiplying include receiving a signal having an input frequency at a frequency multiplier comprising a pair of transistors; and selecting a harmonic in the signal by connecting the transistors to a common impedance through a respective collector impedance, wherein an output frequency at the harmonic between the collector impedances and the common impedance is an even integer multiple of an input frequency. | 06-04-2015 |
| Patent application number | Description | Published |
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| 20140007362 | SKIN WASHING MACHINE USING BRUSHLESS DC MOTOR, METHOD OF CONTROLLING SAME, AND PROGRAM RECORDING MEDIUM FOR PERFORMING THE CONTROLLING METHOD - Disclosed is a skin washing apparatus using a brushless DC motor, including: a case for the skin washing apparatus; an operation unit installed outside the case, commanding ON/OFF operation and switching operation for forward and reverse rotations in unit of a predetermined angle; power supply installed at one end of an interior of the case; a brushless DC motor installed inside the case to be operated by electric power received from the power supply as to be rotated forwardly and reversely in unit of a predetermined angle; a control unit for outputting an electrical signal for controlling forward and reverse rotations of the brushless electric motor by a predetermined angle in response to a switching signal of the operation unit; and a skin washing brush mounted on a shaft of the brushless electric motor to be rotated forwardly and reversely according to an operation of the brushless electric motor. | 01-09-2014 |
| 20140234005 | SKIN CARE DEVICE HAVING FUNCTION FOR MOVING VERTICALLY - The present invention relates to a beauty apparatus comprising: a case unit comprising an upper case for accommodating powder and a lower case detachably attached to the upper case; a guide mounted to the lower case between the upper case and the lower case; a magnetic field generating unit mounted to an inside of the lower case between the guide and the lower case, for generating a time-varying magnetic field; a magnetic body coupling part moving through the guide within the lower case according to a change of a magnetic field; a movable plate mounted to the magnetic body coupling part passing through a guide hole formed in the guide on the magnetic body coupling part, for restricting movement of the magnetic body coupling part; and a puff pad enclosing the guide to vibrate according to movement of the movable plate. | 08-21-2014 |
| 20140350442 | FACIAL MASSAGER - Disclosed is a device for face for forming a relatively high potential difference between power terminals of different polarities without a voltage booster circuit to make a lot of current flow through human skin such that function of iontophoresis may be remarkably improved and simultaneously for driving electrically-driven modules of a mask individually without an external power supply to stimulate entirely or partially. The massage device for face includes a mask including an accommodation formed therein and a terminal exposing hole of a terminal for making current to human skin, and at least one electrically-driven module accommodated in the accommodation of the mask, exposing two terminals of different polarities to the outside through the terminal exposing hole, a driving unit having a rotary shaft and a coil wrapping the rotary shaft, and increasing a potential difference between the two terminals using an induced electromotive force of the coil. | 11-27-2014 |
| 20150038926 | Container for skin care with heating massage function - Disclosed is a skin cosmetic container including an opening/closing unit capable of discharging contents introduced into a cylinder provided within a first body in which the contents are stored to the outside of the first body as a pressure is applied to a push button provided on a pump body mounted to an upper portion of the first body and including a discharge hole for discharging the contents flowing along a guide passage in the pump body to the outside of the first body to selectively open and close a content passage, the skin cosmetic container including: a second body mounted to a lower portion of the first body and having a temperature controller therein; a power source mounted within the second body; and a heater mounted to an end of the second body to emit heat by using electric power applied from the power source and including a heat emitting portion whose heat emitting temperature is controlled by the temperature controller. | 02-05-2015 |
| 20150189980 | HAIRDRESSING DEVICE HAVING GEAR MODULE FOR REDUCING ROTATIONAL SPEED - Provided is a makeup device having a gear module for reducing rotational speed. The makeup device includes: a case module including a first case and a second case detachably attached to the first case; a power supply provided in the case module; a rotary motor electrically connected to the power supply and provided in the case module; a gear module connected to a driving shaft of the rotary shaft to reduce rotational speed of the rotary motor; a brush plate exposed out of the first case and reduced to rotate by a gear ratio of the rear module and mounted with a brush; and a controller positioned in the case module and controlling rotational speed of the brush plate according to an operation of the switch. | 07-09-2015 |
