In this paper, the ideal standard design and construction of plant factory systems with the Green IT technologies is proposed. For feasibility and problem analysis, a container-type plant factory which was integrated with hardware and software of elemental technologies was operated as a test bed. This operation testing and research will be the foundation of the future construction and operation of large plant factories. 친환경 Green IT 기술과 융합된 식물공장 관련기 술 중 가장 핵심이라고 할 수 있는 생장환경 모니터링 시스템 연구 [3][4][5] , 인공광원 시스템 도입 [6][7][8] , 환경 센싱 용 센서모듈의 개발 [9] , 식물공장 자동화 설계 [10] , 멀티 미디어의 활용 [11][12] , 고품질 작물의 안전성 확보를 위 한 이력관리 방법 [13][14][15] 에 대한 연구가 활발하게 이루

In this paper, the performance variation of a planar circular monopole antenna is studied, when this antenna is fabricated to film type and installed in the space between case and PCB of UWB terminal. When the circular monopole part has the 'ㄷ' folded structure, the input impedance and return loss, bandwidth, radiation pattern of this antenna are simulated and measured. Then the performance variation is compared with conventional planar antenna. As the results, the folded type circular antenna is usable as a intenna of UWB communication terminal, because of the good return loss and radiation pattern performance in the 2.6 -12 GHz including the UWB frequency band.