Abstract: A piezoelectric generator for power supply of a portable terminal is provided. The piezoelectric generator includes: a portable terminal case which has a battery mounting part formed on one surface thereof and has parts of the portable terminal mounted therein; a slide part which is formed on opposite side surfaces of a border of the portable terminal case to be able to slide up and down; and a piezoelectric body which has one end or opposite ends connected with the slide part and is disposed in the battery mounting part in a transverse direction, and which vibrates by a sliding movement of the slide part.

Abstract: A piezoelectric generator for power supply of a portable terminal is provided. The piezoelectric generator includes: a portable terminal case which has a battery mounting part formed on one surface thereof and has parts of the portable terminal mounted therein; a slide part which is formed on opposite side surfaces of a border of the portable terminal case to be able to slide up and down; and a piezoelectric body which has one end or opposite ends connected with the slide part and is disposed in the battery mounting part in a transverse direction, and which vibrates by a sliding movement of the slide part.

Abstract: A piezoelectric power generator can be used regardless of the size of the parts, and can position the mass center of a mass at the center by disposing the free ends of cantilevers opposite each other when connecting a plurality of cantilevers in series. The piezoelectric power generator is a morph structure cantilever piezoelectric power generator having at least two cantilevers disposed with their free ends opposite to each other, and a mass that is one body provided for bending of the cantilevers.

Abstract: A piezoelectric power generator for feeding emergency power, includes a frame; a fixing unit comprising a left fixing body coupled to an upper left side of the frame and a right fixing body coupled to an upper right part of the frame; a first piezoelectric body bonded to a right side of the left fixing body; a second piezoelectric body bonded to a left side of the right fixing body; and a vibration unit bonded between the first piezoelectric body and the second piezoelectric body and vibrating vertically.

Abstract: A piezoelectric power generator for feeding emergency power, includes a frame; a fixing unit comprising a left fixing body coupled to an upper left side of the frame and a right fixing body coupled to an upper right part of the frame; a first piezoelectric body bonded to a right side of the left fixing body; a second piezoelectric body bonded to a left side of the right fixing body; and a vibration unit bonded between the first piezoelectric body and the second piezoelectric body and vibrating vertically.

Abstract: A bandpass filter (BPF) configured in 3-D structures for filtering signals of ultra wide bands is disclosed, the BPF comprising sequentially stacked first to fourth dielectric substrates, wherein the first dielectric substrate is formed at a bottom surface thereof with a first ground pattern, the second dielectric substrate is formed at an upper surface thereof with a second ground pattern, and a stripline pattern is formed between the first and second dielectric substrates. The fourth dielectric substrate is formed thereon with a filter pattern and input/output coupled line patterns.

Abstract: The chip embedded printed circuit board and a fabricating method thereof are disclosed, wherein a circuit pattern is formed by depositing a metal layer on a support layer, a semiconductor chip is packaged on a support layer to wrap the semiconductor chip and the circuit pattern on the support layer and to form an isolation layer, a via hole filled with conductive material is formed through the isolation layer for interlayer electrical connection, part of the support layer is selectively removed to form a plated heat sink, such that a packaging process can be performed in a very planar state and the plated heat sink can be integrated with a printed circuit board.

Abstract: A bandpass filter (BPF) configured in 3-D structures for filtering signals of ultra wide bands is disclosed, the BPF comprising sequentially stacked first to fourth dielectric substrates, wherein the first dielectric substrate is formed at a bottom surface thereof with a first ground pattern, the second dielectric substrate is formed at an upper surface thereof with a second ground pattern, and a stripline pattern is formed between the first and second dielectric substrates. The fourth dielectric substrate is formed thereon with a filter pattern and input/output coupled line patterns.