Abstract: A radio frequency (RF) switch apparatus includes a first series switch circuit including a first series switch disposed between a first terminal and a second terminal and operating in response to a first gate signal, and a first capacitor circuit and a second capacitor circuit connected across the first series switch; a first shunt-bias circuit disposed between a first connection node between the first terminal and the first series switch, and a ground, and providing a power voltage or a ground potential to the first connection node in response to a second gate signal; and a first shunt-impedance circuit connected between the first connection node and the first shunt-bias circuit and adjusting path impedance in response to a third gate signal. Each of the first capacitor circuit and the second capacitor circuit passes an alternating current (AC) signal or blocks a direct current (DC) voltage.

Abstract: A radio frequency (RF) switch apparatus includes a signal input terminal; a signal output terminal; a first transistor including a first input terminal connected to the signal input terminal, a first output terminal connected to the signal output terminal, a first gate terminal, and a first body terminal, wherein one of the first input terminal and the first output terminal is a source terminal and another one of the first input terminal and the first output terminal is a drain terminal; a first capacitor circuit connected between the first input terminal and the first body terminal; and a second capacitor circuit connected between the first body terminal and the first output terminal; wherein a first capacitance of the first capacitor circuit is greater than a second capacitance of the second capacitor circuit.

Abstract: A power amplifying apparatus includes a control circuit generating a bias voltage and generating a control signal using a battery voltage and a reference voltage, and a power amplifying circuit boosting the battery voltage according to the control signal to provide an operating voltage, and operating according to the bias voltage and the operating voltage to amplify an input signal, wherein the power amplifying circuit detects the operating voltage and provides a detection voltage to the control circuit, and the control circuit controls the control signal according to the detection voltage.

Abstract: A radio frequency switch apparatus includes a radio frequency switch, a dynamic bias circuit, and a switch control circuit. The radio frequency switch includes a first radio frequency switch circuit connected between a first signal terminal and an input terminal. The first radio frequency switch circuit includes a series switch and a shunt switch. The dynamic bias circuit is configured to generate a bias voltage and a buffer voltage lower than a battery voltage by a preset voltage, using the battery voltage and configured to output the bias voltage to a signal line connected to the input terminal. The switch control circuit is configured to generate first and second gate voltages to switch the first radio frequency switch circuit, based on a band selection signal, using the battery voltage and the buffer voltage.

Abstract: A power amplifying apparatus includes a control circuit generating a bias voltage and generating a control signal using a battery voltage and a reference voltage, and a power amplifying circuit boosting the battery voltage according to the control signal to provide an operating voltage, and operating according to the bias voltage and the operating voltage to amplify an input signal, wherein the power amplifying circuit detects the operating voltage and provides a detection voltage to the control circuit, and the control circuit controls the control signal according to the detection voltage.

Abstract: A band selection switch apparatus includes: a first switch including a first series switch disposed between a transmission input terminal and a first transmission and reception terminal; a second switch including a second series switch disposed between the transmission input terminal and a first transmission terminal; and a third switch including a third series switch disposed between a first reception output terminal and the first transmission and reception terminal. The first series switch includes a first series switch circuit including first series switch elements connected between the transmission input terminal and a first intermediate node, a second series switch circuit including second series switch elements connected between the first intermediate node and the first transmission and reception terminal, and a first shunt switch circuit including first shunt switch elements connected between the first intermediate node and a ground.

Abstract: A power amplifying apparatus includes a power circuit configured to generate operating power, a random pulse generation circuit configured to be supplied with the operating power and to generate a pulse width modulation signal of which a pulse width is randomly changed over time using an input radio frequency (RF) signal, and a charge pump circuit configured to be supplied with the operating power and to randomly perform a switching operation according to the pulse width modulation signal to generate a negative voltage.

Abstract: A radio frequency switch apparatus includes a radio frequency switch, a dynamic bias circuit, and a switch control circuit. The radio frequency switch includes a first radio frequency switch circuit connected between a first signal terminal and an input terminal. The first radio frequency switch circuit includes a series switch and a shunt switch. The dynamic bias circuit is configured to generate a bias voltage and a buffer voltage lower than a battery voltage by a preset voltage, using the battery voltage and configured to output the bias voltage to a signal line connected to the input terminal. The switch control circuit is configured to generate first and second gate voltages to switch the first radio frequency switch circuit, based on a band selection signal, using the battery voltage and the buffer voltage.

Abstract: The present invention relates to a system and method for one button-based heterogeneous barcode integration authentication/approval which is capable of providing a one-button integration authentication/approval service for a heterogeneous barcode with existing barcode authentication affiliated stores infrastructures utilized as they are, and exchanging barcodes of existing gift certificates, coupons, pre-paid cards, credit cards, etc. possessed by a user for heterogeneous barcodes through a gateway operator server.

Abstract: There are provided a back electromotive force detection circuit and a motor driving control apparatus using the same. The back electromotive force detection circuit includes a duty determining unit and a delay compensation unit. The duty determining unit outputs a differential level according to a duty of a driving control signal of a motor. The delay compensation unit performs delay compensation differently on each differential level to compensate for a delay in back electromotive force of the motor regardless of a variation in a duty of the driving control signal.

Abstract: The present invention relates to a system and method for one button-based heterogeneous barcode integration authentication/approval which is capable of providing a one-button integration authentication/approval service for a heterogeneous barcode with existing barcode authentication affiliated stores infrastructures utilized as they are, and exchanging barcodes of existing gift certificates, coupons, pre-paid cards, credit cards, etc. possessed by a user for heterogeneous barcodes through a gateway operator server.

Abstract: Provided are an apparatus and method for forecasting the security threat level of a network. The apparatus includes: a security data collection unit for collecting traffic data and intrusion detection data transmitted from an external network to a managed network; a malicious code data collection unit for collecting malicious code data transmitted from a security enterprise network; a time series data transformation unit for transforming the data collected by the security data collection unit into time series data; a network traffic analysis unit for analyzing traffic distribution of the managed network using the data collected by the security data collection unit; and a security forecast engine for forecasting security data of the managed network using the time series data obtained by the time data transformation unit, the data analyzed by the network traffic analysis unit, and the data collected by the malicious code data collection unit.

Abstract: Provided is a multi-band amplifier and a method of amplifying a multi-band. The multi-band amplifier includes a wireless signal input terminal into which a first frequency band signal and a second frequency band signal are input, a first impedance matching part connected to the wireless signal input terminal and configured to match an input impedance in a first frequency band, a second impedance matching part connected to the wireless signal input terminal and configured to match an input impedance in a second frequency band, a common source amplifier to which the first impedance matching part and the second impedance matching part, and a common gate amplifier connected to the common source amplifier. Accordingly, performance degradation can be reduced in comparison with a conventional amplifier, broadband amplification as well as narrow band amplification can be performed, and an amplification gain can be adjusted.

Abstract: A system for an engine for forecasting cyber threats and a method enabling the forecast of a low-level cyber threat and the forecast of a high-level cyber threat using the low-level cyber threat in a hierarchical structure of cyber threats are provided. The system includes a forecast information database which stores forecast information including cyber threat forecast items, a forecast schedule related to the items, forecast simulation information, forecast item hierarchical structure information, time series data on cyber threats, and sample data on cyber threats; a forecast engine core subsystem which forecasts the levels of threats for the cyber threat forecast items having a hierarchical structure using the forecast information stored in the forecast information database; and a forecast engine control interface which receives control commands for the forecast engine core subsystem from a user or external system, and delivers the received control commands to the forecast engine core subsystem.

Abstract: Disclosed herein is a power on reset (POR) circuit, including: a current mirror circuit adjusting ratio of current flowing in a circuit according to voltage supplied from power; an inverter driven according to output of the current mirror circuit to output a POR signal; a brown out detection (BOD) comparator electrically connected to the current mirror circuit and comparing the voltage supplied from the power with reference voltage to output a corresponding voltage signal according to the comparison result; a BOD controlling switch driven when the output of the BOD comparator is zero voltage (0V) to again operate a POR; and a current controlling switch installed in the current mirror circuit and driven when the output of the BOD comparator is zero voltage (0V) to control and supply current of the POR.

Abstract: There are provided a back electromotive force detection circuit and a motor driving control apparatus using the same. The back electromotive force detection circuit includes a duty determining unit and a delay compensation unit. The duty determining unit outputs a differential level according to a duty of a driving control signal of a motor. The delay compensation unit performs delay compensation differently on each differential level to compensate for a delay in back electromotive force of the motor regardless of a variation in a duty of the driving control signal.

Abstract: Disclosed herein is a power on reset (POR) circuit, including: a current mirror circuit adjusting ratio of current flowing in a circuit according to voltage supplied from power; an inverter driven according to output of the current mirror circuit to output a POR signal; a brown out detection (BOD) comparator electrically connected to the current mirror circuit and comparing the voltage supplied from the power with reference voltage to output a corresponding voltage signal according to the comparison result; a BOD controlling switch driven when the output of the BOD comparator is zero voltage (0V) to again operate a POR; and a current controlling switch installed in the current mirror circuit and driven when the output of the BOD comparator is zero voltage (0V) to control and supply current of the POR.

Abstract: Antibodies specifically binding to c-Met protein, hybridoma cell lines, and compositions comprising the antibodies are disclosed herein. Methods of making and using the antibodies and compositions are also disclosed.

Abstract: Antibodies specifically binding to c-Met protein, hybridoma cell lines, and compositions comprising the antibodies are disclosed herein. Methods of making and using the antibodies and compositions are also disclosed.

Abstract: Disclosed herein are a transformer and a method of manufacturing the same. The transformer includes: a primary side winding having a loop shape; a secondary side winding formed on the same plane as that of the primary side winding in a remaining section except for at least a section at which it intersects with the primary side winding and having the same loop shape as that of the primary side winding so as to be electromagnetically coupled to the primary side winding; and an intersecting section formed so that the primary side and secondary side windings having the sum of the turn numbers of 3 or more intersect with each other in a two-layer structure, wherein the intersecting section includes at least one point of intermediate node having one side connected in a first layer and the other side connected in a second layer.