Abstract: An exemplary embodiment of the present disclosure provides a separator for a fuel cell, which is stacked on a reaction layer including a membrane electrode assembly (MEA). The separator includes a plate body stacked on the reaction layer, a wave pattern provided on one surface of the plate body that faces the reaction layer, the wave pattern being configured to define a reaction channel disposed between the reaction layer and the plate body and provided in a first direction in which a reactant gas is supplied, so that the reactant gas flows along the reaction channel, and a land provided along a lateral end of the wave pattern and disposed to be in contact with the reaction layer, thereby obtaining an advantageous effect of improving performance and operational efficiency.

Abstract: The present invention relates to a 5th-generation (5G) or pre-5G communication system to be provided in order to support a higher data transmission rate than a beyond 4th-generation (4G) communication system such as long term evolution (LTE). The present invention relates to a signal transmission method of a radio frequency (RF) processing device, the method comprising the steps of: generating a pulse signal including a control signal and a clock signal for obtaining synchronization with another RF processing device, which is connected through an interface; and transmitting, to the another RF processing device, at least one from among the pulse signal, a RF signal for communication with a base station, and a power signal for supplying power to the another RF processing device, wherein the clock signal and the control signal are assigned to different time units, and the pulse signal, the RF signal and the power signal are signals of different frequency bands.

Abstract: An apparatus and method for controlling power in a communication system are provided. The method includes amplifying an input signal by a second processor farther from an antenna than a first processor, and determining whether to enable or disable each of the first processor and the second processor based on results from the amplification by the second processor. Another method includes amplifying an input signal from an antenna by a second processor electrically farther from the antenna than a first processor, and determining whether to operate the first processor and the second processor based on a value related to a reception state for the amplified signal by the second processor.

Abstract: The present invention relates to a 5th-generation (5G) or pre-5G communication system to be provided in order to support a higher data transmission rate than a beyond 4th-generation (4G) communication system such as long term evolution (LTE). The present invention relates to a signal transmission method of a radio frequency (RF) processing device, the method comprising the steps of: generating a pulse signal including a control signal and a clock signal for obtaining synchronization with another RF processing device, which is connected through an interface; and transmitting, to the another RF processing device, at least one from among the pulse signal, a RF signal for communication with a base station, and a power signal for supplying power to the another RF processing device, wherein the clock signal and the control signal are assigned to different time units, and the pulse signal, the RF signal and the power signal are signals of different frequency bands.

Abstract: There are provided a method and device for detecting a zero phase component. The device for detecting a zero phase component includes a meter chip of a sequential sampling method, a data acquiring unit configured to acquire sequential data on a plurality of phases from the meter chip, and a zero phase current value calculating unit configured to calculate an instantaneous current value for fault detection by summing instantaneous current values for each phase from the acquired sequential data, and calculate a zero phase current value using the calculated instantaneous current value for fault detection.

Abstract: An apparatus and method for controlling power in a communication system are provided. The method includes amplifying an input signal by a second processor farther from an antenna than a first processor, and determining whether to enable or disable each of the first processor and the second processor based on results from the amplification by the second processor. Another method includes amplifying an input signal from an antenna by a second processor electrically farther from the antenna than a first processor, and determining whether to operate the first processor and the second processor based on a value related to a reception state for the amplified signal by the second processor.

Abstract: There are provided a method and device for detecting a zero phase component. The device for detecting a zero phase component includes a meter chip of a sequential sampling method, a data acquiring unit configured to acquire sequential data on a plurality of phases from the meter chip, and a zero phase current value calculating unit configured to calculate an instantaneous current value for fault detection by summing instantaneous current values for each phase from the acquired sequential data, and calculate a zero phase current value using the calculated instantaneous current value for fault detection.

Abstract: The new RTD-HBT differential oscillator circuit topology is proposed. At the nodes of the inductors and varactors in the conventional differential oscillator topology, each the RTD is attached to increase the magnitude of the negative conductance, which results in performance improvement in both the RF output power and phase noise. And, the differential sinusoidal voltage waveform which is essential for the wireless communication system are generated. In addition, the DC power consumption RTD-HBT differential oscillator circuit is similar to the conventional HBT differential oscillator due to the small DC power consumption performance of the RTD.

Abstract: The present invention relates to CML(Current Mode Logic)-type input driving method and tunneling diode logic using MOBILE(Monostable Nistable transition Logic Element) configuration, as kinds of very high-speed digital logic circuits. The objectives of the present invention are to improve the disadvantage of MOBILE circuit configuration that is an existing tunneling diode logic, and at the same time provide new MOBILE based logic functions. Wherein, the difficulty for input voltage adjustment is resolved by replacing the input part with a CML input driving gate, and speed problem due to transistor is resolved. Moreover, a plurality of logic functions such as inverted return-to-zero D flip-flop, non-inverted return-to-zero D flip-flop, return-to-zero OR gate, return-to-zero D flip-flop generating differential output, and optical flip-flop are implemented.

Abstract: A diagnosis apparatus for a switchgear comprises a sensing unit which detects a partial discharge signal of the switchgear, an amplifying unit which amplifies the partial discharge signal detected from the sensing unit, a frequency spectrum generation unit which converts the amplified partial discharge signal into a frequency spectrum; and an analysis-diagnosis unit which analyzes and diagnoses the frequency spectrum.