Abstract:
An apparatus for determining a position of an RFID antenna and a method thereof are provided to enable an RFID service provider to install the antenna for an RFID reader at an optimal position. An apparatus for determining a position of an RFID antenna comprises a probe moving unit(200) and a controller(210). The probe moving unit(200) makes a probe receive electric waves from an RFID tag for each position of the probe while moving the probe move upward or downward in a traverse axis direction, a longitudinal axis direction or a vertical direction. The controller(210) outputs a control signal for determining the position of the probe moving unit(200), and determines the position, whose electric field strength is the largest, as the position of the RFID antenna by measuring and analyzing the field strength of the electric waves for each position received by the probe.
Abstract:
A multi-step integrated security management system using an intrusion detection log collection engine and a traffic statistics generation engine, and a method thereof are provided to reduce a false detection rate by relating/analyzing an intrusion detection log collected in the intrusion detection log collection engine and traffic quantity generated from the traffic statistics generation engine. Each monitoring agent(100) is installed to each agency using the independent network, and comprises the intrusion detection log collection engine(101) collecting the intrusion detection log and the traffic statistics generation engine(102) collecting traffic statistics. Each management server(200,300) separately or mutually analyzes the intrusion detection log and the traffic statistics received from each monitoring agent. The intrusion detection log collection engine includes an external interface accessing an IDS(Intrusion Detection System) to collect the intrusion detection engine, a format converter, a log contractor, and a transmitter. The traffic statistics generation engine includes a network interface, a packet analyzer, a traffic information manager, a statistics information generator, and the transmitter.
Abstract:
An apparatus for measuring a recognition range between an RFID tag and a reader is provided to shorten the measuring time and improve reliability by accurately measuring the electric field strength at optional positions and providing a measuring analysis graph. An electromagnetic anechoic chamber includes at least one unit cell having an electromagnetic absorbing body(110) in a line. The electromagnetic absorbing body is installed on the inner wall of the electromagnetic absorbing body. An electromagnetic wave generation unit is positioned at the cell of one end of the electromagnetic anechoic chamber and generates electromagnetic waves through an antenna. An electromagnetic wave measurement unit measures the electric field strength of the electromagnetic wave emitted from the electromagnetic wave generation unit by a field probe(280).
Abstract:
1. 청구범위에 기재된 발명이 속한 기술분야 본 발명은 상부 유전체층의 금속스트립을 이용한 고이득 선형편파 마이크로스트립 패치 배열 안테나에 관한 것임. 2. 발명이 해결하려고 하는 기술적 과제 본 발명은 마이크로스트립 패치 배열 안테나의 상부에 금속스트립을 갖는 유전체층을 위치시켜 제작이 용이하면서도 주파수 대역 특성이 좋은 고이득 마이크로스트립 패치 배열 안테나를 제공하고자 함. 3. 발명의 해결방법의 요지 본 발명은, 선형편파 마이크로스트립 패치 배열 안테나에 있어서, 하면에 접지도체를 위치시키고, 상면에 급전선과 이와 전기적으로 결합되어 에너지를 방사하는 제1 방사패치가 형성된 제1 하부 유전체층; 상기 제1 하부 유전체층의 상부에 위치하고, 주파수 대역폭 증가(광대역)를 위해 일면에 상기 제1 방사패치와 전자기적으로 결합되어 에너지를 방사하는 제2 방사패치가 형성된 제2 하부 유전체층; 및 상기 제2 하부 유전체층의 상부에 이격되어 위치하고, 일면에 '기판표면파의 전파방향을 조정하여 안테나 이득을 높이기 위한 금속스트립'을 갖는 상부 유전체층을 포함함. 4. 발명의 중요한 용도 본 발명은 패치 배열 안테나에 이용됨.
Abstract:
PURPOSE: A circular polarization microstrip patch antenna is provided to increase a radiation efficiency and to reduce a fabrication cost by connecting the first patch and the second patch with a form layer interposed therebetween. CONSTITUTION: The first patch antenna layer includes a dielectric layer(120) and a ground conduction layer(110) and radiates an energy by exciting a current through a power feed part(130) which is connected with the first patch(140) placed on one side of the dielectric layer. Tee second patch antenna layer includes a dielectric film(160) and radiates an energy by exciting a current through the first patch which is connected with the second patch(170) placed on one side of the dielectric film. The first form layer(150) is disposed between the first and second patch antenna layers to isolate the first and second patch antenna layers. The second form layer(180) is disposed on one side of the second patch antenna layer to protect the second antenna layer.
Abstract:
PURPOSE: A circular polarization microstrip patch antenna is provided to increase a radiation efficiency and to reduce a fabrication cost by connecting the first patch and the second patch with a form layer interposed therebetween. CONSTITUTION: The first patch antenna layer includes a dielectric layer(120) and a ground conduction layer(110) and radiates an energy by exciting a current through a power feed part(130) which is connected with the first patch(140) placed on one side of the dielectric layer. Tee second patch antenna layer includes a dielectric film(160) and radiates an energy by exciting a current through the first patch which is connected with the second patch(170) placed on one side of the dielectric film. The first form layer(150) is disposed between the first and second patch antenna layers to isolate the first and second patch antenna layers. The second form layer(180) is disposed on one side of the second patch antenna layer to protect the second antenna layer.
Abstract:
본 발명은 유방암 진단 장치 및 방법에 관한 것으로서, 특히 마이크로웨이브 이미징(microwave imaging)을 이용하여 유방암을 진단하기 위한 장치 및 방법에 관한 것이다. 본 발명의 일 실시 예에 따른 장치는 유방을 삽입할 수 있는 탱크를 구비한 유방암 진단 장치로서, 탱크의 지면 위에 위치하고 탱크 내로 삽입된 유방 주변을 따라 이동가능하고 전자파의 방사가 가능한 송신 안테나와, 탱크의 지면 위에 위치하고 탱크 내로 삽입된 유방 주변을 따라 이동가능하고 전자파의 수신이 가능한 수신 안테나와, 송신 안테나와 수신 안테나를 탱크 내로 삽입된 유방 주변을 따라 이동시키는 구동부와, 송신 안테나와 수신 안테나를 이동시키기 위한 제어 신호를 구동부로 제공하고 수신 안테나에서 수신된 전자파의 진폭 및 위상 정보를 처리하는 처리부를 포함한다. 유방암, 진단 장치, 마이크로파(microwave), 토모그램(tomogram)
Abstract:
PURPOSE: An apparatus for a three-dimensional measurement of an object shape is provided to measure the three-dimensional shape of a target through a simple apparatus and a driving structure without the interference with a radio wave transmission and reception antenna. CONSTITUTION: In an apparatus for a three-dimensional measurement of an object shape, a plurality of line lasers(110a,110b) form a scan image around a target. A camera(130) is arranged at the front of laser up down driving units and the front of the target. The camera obtains the shape of a closed loop which is formed in the line laser. The line laser forms a closed loop on the target by projecting a laser beam on the target. The camera obtains the image of a generated closed loop. A laser up down driving unit maintains the line laser to have a certain angle.