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문정호,정의민,박래정,정태윤,Moon, Jung-Ho,Jung, Ui-Min,Park, Lae-Jeong,Chung, Tae-Yun 대한임베디드공학회 2012 대한임베디드공학회논문지 Vol.7 No.6
This paper presents a wireless sensor network protocol aimed for artificial structure monitoring. The proposed protocol enables the sensor network to operate at a low duty cycle for reducing power consumption with a high degree of synchronization accuracy. It also enables event-triggered measurement of environmental information with a high sampling rate and the transmission of the measured data with a low latency. The feasibility of the proposed protocol is demonstrated through experiments involving three sensor nodes and a sink node. Though a tunnel health monitoring was considered in the paper, the proposed protocol can be easily adopted in other areas.
문정호,정무일,김유신,이광두,박상규,한상민,김영환,이창석,Moon Jeong-Ho,Jeong Moo-Il,Kim Yu-Sin,Lee Kwang-Du,Park Sang-Gyu,Han Sang-Min,Kim Young-Hwan,Lee Chang-Seok 한국전자파학회 2006 한국전자파학회논문지 Vol.17 No.6
[ $3.1{\sim}5.15$ ] GHz 대역의 광대역 저잡음 증폭기를 새로운 입력 매칭 방식과 귀환회로 방식으로 구현하였다. 제안된 광대역 증폭기는 $0.18{\mu}m$ RF CMOS 공정을 사용하여 제작하였다. 측정된 값은 잡음지수가 $3.4{\sim}3.9$ dB, 전력 이득은 $12.8{\sim}14$ dB, 입력 매칭은 -9.4이고 입럭 IP3는 -1 dBm이고, 소비 전력은 14.5 mW이다. An ultrawideband(UWB) $3.1{\sim}5.15$ GHz low-noise amplifier employing a novel input matching circuit and feedback topology are presented. The proposed UWB amplifier is Implemented in $0.18{\mu}m$ RF CMOS technology. Measurements show a NF of $3.4{\sim}3.9$ dB, a power gain of $12.8{\sim}14$ dB, better than -9.4 of input matching and, an input IP3 of -1 dBm, while comsuming only 14.5 mW of power.