Patent application number | Description | Published |
20120326734 | CAPACITANCE SENSOR WITH IMPROVED NOISE FILTERING CHARACTERISTICS, METHOD FOR NOISE FILTERING OF CAPACITANCE SENSOR AND COMPUTER-READABLE RECORDING MEDIUM - Disclosed is a capacitance sensor including: a capacitance-voltage/current converter which converts a capacitance value of a sense capacitor into a voltage signal or a current signal by using an input signal; a multiplier which applies a weight to an output signal of the capacitance-voltage/current converter and outputs the weighted output signal; and an accumulator which accumulates continuously the output signal of the multiplier. | 12-27-2012 |
20130257526 | CIRCUIT AND METHOD FOR REMOVING NOISE - Disclosed is a noise removing circuit including: a voltage booster which boosts an input signal; and a regulator which receives an output signal of the voltage booster and reduces the signal's voltage higher than a specific value to the signal's voltage having the specific value and then outputs the signal. | 10-03-2013 |
20130257558 | TUNABLE CAPACITOR - Disclosed is a tunable capacitor. The tunable capacitor according to a first embodiment of the present invention includes: a variable capacitor unit placed between a first terminal and a second terminal; and a bypass switch which on/off controls a bypass connection between the first terminal and the second terminal, wherein the variable capacitor unit and the bypass switch are integrated on one semiconductor die or on one module. The tunable capacitor according to a second embodiment of the present invention includes: a variable capacitor unit placed between a first terminal and a second terminal; an impedance tuner placed between aground terminal and either the first terminal or the second terminal; and a tuning switch which on/off controls the connection between the variable capacitor unit and an impedance tuner, wherein the variable capacitor unit, the impedance tuner and the tuning switch are integrated on one semiconductor die or on one module. | 10-03-2013 |
20130258535 | TUNABLE CAPACITOR - Disclosed is a tunable capacitor which includes: a variable capacitor unit placed between a first terminal and a second terminal; and an ESD protection circuit which is inserted either between the first terminal and a ground terminal or between the second terminal and the ground terminal, or is inserted both between the first terminal and a ground terminal and between the second terminal and the ground terminal. | 10-03-2013 |
20140002208 | TUNABLE CAPACITOR | 01-02-2014 |
20140055191 | LOW POWER RF SWITCH - Disclosed is a low power RF switch, and more particularly, disclosed is a low power RF switch which does not use a negative voltage when being driven. The low power RF switch includes: a switch unit which including a transistor which receives a high (H) control signal or a low (L) control signal and switches a signal flowing from one end to the other end thereof; a first voltage maintenance unit maintaining a constant voltage to one end of the transistor; and a second voltage maintenance unit maintaining a constant voltage to the other end of the transistor. | 02-27-2014 |
20140240002 | VOLTAGE LEVEL CONVEROR AND RF SWITCHING DRIVER USING THE SAME - Disclosed is a voltage level converter that includes: a first conversion unit which receives at least one input signal of a logic 1 signal and a logic 0 signal from a signal input terminal and converts the signal; a second conversion unit and a third conversion unit which alternately output a logic −1 signal and the logic 1 signal respectively in accordance with the input signal; a fourth conversion unit and a fifth conversion unit which alternately output the logic −1 signal and the logic 0 signal respectively in accordance with the input signal; and a latch which has a complementary characteristic in which if a first transistor becomes an on-state, then a second transistor becomes an off-state in accordance with the input signal, and performs a positive feedback operation. A drain output of the first transistor is input to the fourth conversion unit. A drain output of the second transistor is input to the fifth conversion unit. | 08-28-2014 |
20150116167 | ANTENNA APPARATUS - An antenna apparatus may be provided that includes: a radiating metal; a ground which is connected to the radiating metal; a first impedance which forms a first path by being connected between the radiating metal and the ground, has an impedance value which is changed depending on a frequency, and opens the first path in response to a predetermined frequency, and a second impedance which forms a second path parallel with the first path by being connected between the radiating metal and the ground, has an impedance value which is changed depending on a frequency, and short-circuits the second path in response to the predetermined frequency. | 04-30-2015 |