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이만규(Lee Man Gyu),우무현(Woo Moo Hyun) 제어로봇시스템학회 2012 제어로봇시스템학회 합동학술대회 논문집 Vol.2012 No.7
배열안테나는 배열구조에 따라 선배열, 평면배열, 원통배열, 컨포멀배열 등오르 나뉘어진다. 현재 레이다 안테나의 대다수는 1차원 선배열 또는 2차원 평면배열형태로 개발되어져있다. 본 논문에서는 3차원 배열구조인 원통배열구조로 레이다 안테나의 배열구조를 적용한다. 설계된 원통배열 안테나는 상요 EM툴인 Ansys社의 HFSS를 이용하여 복사소자 분석 및 원통배열 안테나의 방위각 및 고각이 빔 조향 특성을 분석한다.
접힌 다이폴 구조를 적용한 L-Band 원통형 능동 위상배열 안테나 설계
이만규(Man-Gyu Lee),권익진(Ickjin Kwon) 대한전자공학회 2013 전자공학회논문지 Vol.50 No.6
본 논문에서는 원통형태의 배열구조에서 수평면 (H-plane), 수직면 (E-Plane) 빔조향 특성을 갖는 원통형 능동위상배열 안테나를 제안하였다. 상호결합특성이 우수한 접힌 다이폴 안테나를 원통의 배열구조에 적합하도록 설계하고, 수칙과 수평으로 8x8 원통 배열구조를 갖는 지향성 배열안테나와 전력 분배를 위한 결합분배기를 설계 및 제작하였다. 원통배열 안테나의 복사소자 배열 간격은 반전력 빔폭과 빔 조향 시 그레이팅로브가 발생하지 않도록 결정하였다. 안테나의 빔 조향은 송수신장치 내부의 6비트 위상변위기를 이용하여 구현하였으며, 안테나 빔조향 시 수평면으로 -24도~24도, 수직면 기준으로 0도~36도의 빔조향 특성을 갖도록 고안되었다. In this paper, we propose a cylindrical active phased array antenna of Beam Steering Characteristics in the horizontal plane(H-plane) and vertical plane(E-Plane) on the cylinder form array structure. We design the bent dipole antenna of the cylindrical array structure adapted excellent mutual-coupling characteristics, designed and manufactured the cylindrical array antennas and power combiner/divider unit for power dividing and combining on the antenna The radiating elements array spacing of Cylindrical array antenna were determined to avoid grating lobes at half power beam steering. Beam steering of the antenna was implemented with 6-bit phase shifter in the transceiver and have been designed based on the characteristics the antenna beam steering at -24 degrees to 24 degrees horizontal, vertical 0 degrees to 36 degrees beam steering. A cylindrical active phased array antenna that produced for verification the performance of the antenna are measured radiation characteristics in accordance with beam steering at L-Band.
김윤신(Yoon Shin Kim),노영만(Young Man Roh),이철민(Cheol Min Lee),김종철(Jong Cheol Kim),전형진(Hyung Jin Jun),이소담(So Dam Lee),김홍렬(Hong Ryeol Kim),이만규(Man Gyu Lee) 한국실내환경학회 2005 한국실내환경학회지 Vol.2 No.1
Nowadays, cremation is becoming generalized and also the frequency of utilization of cremation is increasing in Korea. Futhermore, there is a possibility that indoor air pollution is caused by particles, gas pollutants or microbial pollutants from laying down and cremation of corpses, and also the bereaved family and grievers inside the crematory. Therefore, the major goals in this study were that first, we investigated and analyzed the air quality of particular indoor environments such as the crematory. Second, we assessed the health risk for workers. Finally, we collected and assessed the basic data in special indoor environments because this kind of study had not been performed. We sampled and analyzed PM₁? (heavy metal), VOCS, HCHO, infectious microorganisms to grasp the characteristics of indoor air quality in the crematory through sampling four times from 7th July to 16th October in 2004. Besides, we did personal air sampling of PM₁? (heavy metal) and VOCS to grasp personal exposure of workers from indoor hazardous air pollutants. We conjectured that main sources of pollutants in crematory are cremation, buried corpses, and moving of grievers, also increasing the seriousness of microbial pollutants gathering strength, especially. As we assessed infectious microorganisms of indoor air and executed research for indoor hazardous air pollutants, we want to offer the way of study and policy of management for particular indoor environments like a crematory.