Abstract: Disclosed is a WDM module for a multimode light source. An aspect of the present embodiment provides a WDM module for a multimode light source that simplifies the arrangement/structure of elements included therein and is resistant to temperature. The WDM module includes a base substrate, at least two optical elements configured to receive or output light of different wavelength bands, an optical path conversion unit, a collimator, an optical path adjustment unit, and a reflection unit.

Abstract: A bias circuit includes a bias current circuit and a temperature compensation circuit. The bias current circuit includes a first resistor and a first transistor, in a first current path connected between a current terminal of a reference current and a ground, and connected to each other in series, and a second transistor in a second current path connected between the current terminal and the ground, and having a base connected to a collector of the first transistor. The temperature compensation circuit includes a second resistor in the second current path, and connected between an emitter of the second transistor and a base of the first transistor and having a first thermal coefficient, and a third resistor included in the second current path, and connected between the base of the first transistor and the ground and having a second thermal coefficient, different from the first thermal coefficient.

Abstract: A bias circuit includes a bias current circuit and a temperature compensation circuit. The bias current circuit includes a first resistor and a first transistor, in a first current path connected between a current terminal of a reference current and a ground, and connected to each other in series, and a second transistor in a second current path connected between the current terminal and the ground, and having a base connected to a collector of the first transistor. The temperature compensation circuit includes a second resistor in the second current path, and connected between an emitter of the second transistor and a base of the first transistor and having a first thermal coefficient, and a third resistor included in the second current path, and connected between the base of the first transistor and the ground and having a second thermal coefficient, different from the first thermal coefficient.

Abstract: There is provided a dual communications network base station apparatus including: a first UTRA network transmitting and receiving first data including pairs information via a previously set first communications band; a second UTRA network transmitting and receiving second data including the pairs information via a second communications band different from the first communications band; a core network combining the first data and the second data by using the pairs information during wireless reception, dividing the first data and the second data including the pairs information according to a previously set division rate during wireless transmission, and providing the corresponding UTRA network with the divided first data and second data; and a server communicating data including the first and second data with the core network.

Abstract: There are provided a dual mode communications device and a method of improving a data rate thereof. The dual mode communications device according to the embodiment of the present invention may include a selection unit 100 connecting antenna terminals to receive terminals or transmit terminals, a receive path circuit unit allowing RF receive signals from each of the first and second antennas to pass therethrough, a transmit path circuit unit providing RF transmit signals to the transmit terminals of the selection unit, an RF circuit unit converting the RF receive signals from the receive path circuit unit into baseband signals and converting the baseband signals to be transmitted into the RF transmit signals, and a baseband circuit unit performing control and signal processing of the selection unit in a single communications mode among a dual mode and a single mode.

Abstract: There are provided a dual mode communications device and a method of improving a data rate thereof. The dual mode communications device according to the embodiment of the present invention may include a selection unit 100 connecting antenna terminals to receive terminals or transmit terminals, a receive path circuit unit allowing RF receive signals from each of the first and second antennas to pass therethrough, a transmit path circuit unit providing RF transmit signals to the transmit terminals of the selection unit, an RF circuit unit converting the RF receive signals from the receive path circuit unit into baseband signals and converting the baseband signals to be transmitted into the RF transmit signals, and a baseband circuit unit performing control and signal processing of the selection unit in a single communications mode among a dual mode and a single mode.

Abstract: There are provided a dual mode communications device and a method of improving a data rate thereof. The dual mode communications device according to the embodiment of the present invention may include a selection unit 100 connecting antenna terminals to receive terminals or transmit terminals, a receive path circuit unit allowing RF receive signals from each of the first and second antennas to pass therethrough, a transmit path circuit unit providing RF transmit signals to the transmit terminals of the selection unit, an RF circuit unit converting the RF receive signals from the receive path circuit unit into baseband signals and converting the baseband signals to be transmitted into the RF transmit signals, and a baseband circuit unit performing control and signal processing of the selection unit in a single communications mode among a dual mode and a single mode.

Abstract: An RF power amplifier includes an RF choke coil, a power amplification circuit unit, and an electrostatic discharge (ESD) protection unit. The RF choke coil is connected to a voltage terminal through which an operating voltage is applied. The RF choke coil supplies the operating voltage and interrupts an RF signal. The power amplification circuit unit is supplied with the operating voltage through the RF choke coil. The power amplification circuit unit amplifies an input signal inputted through an input terminal and outputs the amplified input signal through an output terminal. The ESD protection unit is connected between a first connection node and a ground. The ESD protection unit bypasses an ESD voltage from the first connection node to the ground, the first connection node being a node between the voltage terminal and the RF choke coil.

Abstract: An RF power amplifier includes an RF choke coil, a power amplification circuit unit, and an electrostatic discharge (ESD) protection unit. The RF choke coil is connected to a voltage terminal through which an operating voltage is applied. The RF choke coil supplies the operating voltage and interrupts an RF signal. The power amplification circuit unit is supplied with the operating voltage through the RF choke coil. The power amplification circuit unit amplifies an input signal inputted through an input terminal and outputs the amplified input signal through an output terminal. The ESD protection unit is connected between a first connection node and a ground. The ESD protection unit bypasses an ESD voltage from the first connection node to the ground, the first connection node being a node between the voltage terminal and the RF choke coil.

Abstract: There is provided a high frequency transmission module, including: a high band power amplifier amplifying power of a preset high band frequency signal; a low band power amplifier amplifying power of a preset low band frequency signal; an LC matching circuit unit matching output impedance of the low band power amplifier to impedance of an antenna switch circuit; the antenna switch circuit connecting one of a first terminal connected to an output terminal of the high band power amplifier and a second terminal connected to the LC matching circuit unit to a common terminal; and a matching/ESD protecting unit matching impedances between the antenna switch circuit and an antenna and blocking static electricity introduced from the antenna.

Abstract: There is provided a power amplifier that can reduce power consumption by selectively turning a plurality of amplifiers on or off according to the power of a signal to be transmitted. A power amplifier according to an aspect of the invention may include: a first amplification section amplifying an input signal by a predetermined gain; a second amplification section having a plurality of amplification units re-amplifying the input signal, amplified by the first amplification section, by predetermined gains; and a switch section supplying or cutting off power to the plurality of amplification units according to an switching signal to selectively operate the plurality of amplification units.

Abstract: A hinge assembly and a mobile terminal are disclosed. The hinge assembly can include: a torsion spring; a shaft, which penetrates through the torsion spring; a bushing, coupled to one end of the torsion spring and to one side of the shaft; a holder, which is coupled to the other end of the torsion spring, and which the shaft penetrates through; a sliding cam, which is coupled to the other side of the shaft, and which may move in linkage with the shaft; a fixed cam, which engages the sliding cam; a compression spring, which is positioned between the holder and the sliding cam, and which may place the sliding cam in close contact with the fixed cam; and a housing coupled to the holder and the fixed cam. Thus, the mobile terminal can be unfolded automatically using just a few number of parts without requiring energy consumption.

Abstract: There is provided an integrated passive device assembly. An integrated passive device assembly according to an aspect of the invention may include: a board having a wiring pattern provided thereon; an integrated passive device mounted on an upper surface of the board and having conductive patterns provided on upper and lower surfaces thereof; a first connection portion electrically connecting the conductive pattern, provided on the upper surface of the integrated passive device, and the wiring pattern to each other; and a second connection portion electrically connecting the conductive pattern, provided on the lower surface of the integrated passive device, and the wiring pattern to each other.

Abstract: There is provided an integrated passive device assembly including: a substrate having a wiring pattern disposed therein; a mounting part disposed on an upper surface of the substrate, formed of an insulating material, and having an integrated passive device mounted on an upper surface thereof; a conductive pattern disposed inside the mounting part; and a connecting part disposed on the substrate and electrically connected to the integrated passive device. The connecting part and the conductive pattern are electrically connected to the wiring pattern.

Abstract: A vibration-sound generating device and yoke thereof are described. The vibration-sound generating device comprises a diaphragm, a vibration part comprising a magnet and a yoke, which is positioned apart from the diaphragm by a desired distance, a suspension elastically supporting the vibration part, a supporting part supporting the diaphragm and the suspension, and a voice coil electromagnetically driving the diaphragm and the vibration part. The yoke of the invention has higher specific gravity and magnetic permeability than iron. So that it can improve performance of vibration and sound device.

Abstract: A hinge assembly and a mobile communication terminal equipped with the hinge assembly are disclosed. The hinge assembly in accordance with an embodiment of the present invention can include: a housing; a fixing cam, which is coupled to the housing and has a cam head and a ramp; a shaft, which is coupled to the fixing cam such that the shaft and the fixing cam can rotate; a torsion spring, which is coupled to the fixing cam on one end and the shaft on the other end; a sliding cam, which is coupled to the shaft, such that the sliding cam is allowed to slide over the shaft along the axial direction, and has a protrusion facing the ramp; and a compression spring, which is interposed between the sliding cam and the shaft such that the sliding cam is compressed toward the fixing cam. By using a cam structure, the present invention can selectively control the rotation of the hinge assembly.

Abstract: A vibration actuator excites a mass member by interaction between an electric field of a vibration coil provided in an inner space of a case and a magnetic field of a magnetic field unit disposed corresponding to the vibration coil. The vibration actuator has an elastic wire having a wire body fixed to the outer surface of the mass member and elastic ends fixed to the inner surface of the case. The elastic wire is connected between the case and the mass member for elastically supporting mass member.

Abstract: A hinge assembly can include: a torsion spring; a shaft, which penetrates through the torsion spring; a bushing, coupled to one end of the torsion spring and one side of the shaft; a holder, which is coupled to the other end of the torsion spring; a housing coupled to the holder; and a damper, which is coupled to the shaft, and which may dampen a rotation speed of the shaft. The damper can include: a first case, which is coupled to the shaft to move in linkage with the shaft; a second case, rotatably coupled to the first case; a viscous fluid, placed between the first case and the second case; and a stopper, which is coupled to the housing and configured to restrict the rotation angle of the second case. Thus, a mobile terminal may be unfolded automatically using a few number of parts without requiring energy consumption.

Abstract: A hinge assembly and a mobile terminal are disclosed. The hinge assembly can include: a torsion spring; a shaft, which penetrates through the torsion spring; a bushing, coupled to one end of the torsion spring and to one side of the shaft; a holder, which is coupled to the other end of the torsion spring, and which the shaft penetrates through; a sliding cam, which is coupled to the other side of the shaft, and which may move in linkage with the shaft; a fixed cam, which engages the sliding cam; a compression spring, which is positioned between the holder and the sliding cam, and which may place the sliding cam in close contact with the fixed cam; and a housing coupled to the holder and the fixed cam. Thus, the mobile terminal can be unfolded automatically using just a few number of parts without requiring energy consumption.

Abstract: An automatic hinge module and apparatus for opening and closing a toilet bowl. The module includes: a motor, which generates a driving force; a housing, of which one end is coupled to a body of the motor; a drive shaft, which is rotatably coupled to the housing, and which has one end coupled to an output shaft of the motor, such that the centers of rotation of the drive shaft and the output shaft coincide, to allow the drive shaft to transfer the driving force to the exterior; and a spring, one end of which is coupled to the housing, and the other end of which is coupled to the drive shaft, such that the spring provides an elastic force to the drive shaft in a direction of rotation of the drive shaft. Using this module, the cover and seat of a toilet can be opened and closed automatically.