Abstract:
PURPOSE: A low pass filter using a BAWR(Bulk Acoustic Wave Resonator) is provided to reduce the size of a low-pass filter by using a BAWR of a serial segment having different resonant frequencies. CONSTITUTION: An input terminal(210) is connected to a first RF(Radio Frequency) device. An output terminal(220) is connected to a second RF device. The output terminal transfers a signal filtered by a low-pass filter through a parallel segment(230), a first serial segment(240), and a second serial segment(250) to the second RF device. The parallel segment is parallely connected between the input terminal and the output terminal. The parallel segment includes a first BAWR(231), a third BAWR(233), and a fifth BAWR(235). The first serial segment is serially connected between the input terminal and the output terminal. The second serial segment is serially connected between the input terminal and the output terminal.
Abstract:
PURPOSE: A bulk acoustic wave resonator sensor is provided to sense a sample having very small mass and volume by forming a micro structure of hundreds of micrometers. CONSTITUTION: A bulk acoustic wave resonator sensor(210) measures one or more changed resonant frequencies while reacting to a sensing target. The bulk acoustic wave resonator sensor measures the changed resonant frequency signal in a reactive state of a coating layer and a sample injected from the outside. A reference volume acoustic resonator(220) measures a fundamental resonant frequency while not reacting to an external environment. The reference volume acoustic resonator measures the fundamental resonant frequency in a state there is only an antigen before inputting an antibody in order to compare the reference volume acoustic resonator with the changed resonant frequency signal through an antigen-antibody reaction. A sensing part(230) senses the sensing target based on one or more changed resonant frequencies and the fundamental resonant frequency.
Abstract:
PURPOSE: An RF stacked module and an arranging method thereof are provided to minimize interference between a device and a wire by using the RF stacked module through a 3D vertical wire. CONSTITUTION: A first wafer(110) includes a first penetration hole(111,113,115) and a first RF device(117). A second wafer(120) includes a second RF device and a second penetration hole corresponding to the first penetration hole. A vertical wire is connected to the first penetration hole and the second penetration hole. A penetration electrode is connected to an external device through the bottom of the first penetration hole or the top of the second penetration hole.
Abstract:
PURPOSE: The portable apparatus offering ultra-wideband. Antenna is arranged to the center of instrument. The size of the portable apparatus is miniaturized. CONSTITUTION: The portable apparatus(100) arranges the camera(110), speaker(120), vibrator(130), controller(140), the memory(145), first, 2 modems(150, 155), first, 2 antennas, the RF module(180), power supply unit(190), battery(195). The first, and 2 antenna comprise the respective slot, and microstrip.
Abstract:
PURPOSE: An antenna device of a potable terminal is provided to obtain an ultra wideband property by overlapping a frequency band of a plurality of paths having a narrow-band property. CONSTITUTION: An antenna device of a potable terminal includes a substrate, a radiating part(10), a feeding connection part(20), and a ground connection part(30). The substrate has a feeding device and a ground(50). The feeding connection part connects the feeding device to the radiating part in order to feed the radiating part. The feeding connection part includes a feeding plate, a feeding clip, and a feeder. The ground connection part connects one end of the radiating part to the ground in order to ground the radiating part. The ground connection part includes at least two paths having different length. Each path selectively connects the ground to the radiating part.
Abstract:
소정 주파수 신호를 필터링하는 초광대역 안테나가 개시된다. 본 초광대역 안테나는, 외부 전자기 에너지를 공급받는 급전부, 급전부를 통해 급전된 전자기 에너지에 의해 여기(excitation, 勵起)되어 소정의 전자기파를 방사하는 방사체(radiator), 및, 방사체 상에서, 전자기파에 의해 형성되는 전계의 방향과 평행한 방향으로 제작되어, 소정 주파수 대역 신호의 송수신을 차단하는 스터브를 포함한다. 이 경우, 스터브는 제거하고자 하는 소정 주파수 대역의 중심 주파수 신호의 1/4 파장 길이로 제작한다. 이에 따라, 해당 주파수 대역 신호가 필터링된다. 결과적으로, 초광대역 신호 수신 시스템의 구성을 간단하게 함으로써, 크기를 줄이는 동시에 파워 로스 및 노이즈 특성을 향상시킬 수 있게 된다. 초광대역 안테나, 방사체, λ/4 스터브