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이동체 탐지를 위한 동기화 구조의 7~9 GHz CMOS UWB 레이다 송수신기
유준영,박병규,김상균,정승환,어윤성 한국전자파학회 2019 한국전자파학회논문지 Vol.30 No.11
In this paper, a fully integrated 7~9 GHz UWB radar sensor to detect moving targets is presented using the 0.13μm CMOS technology. For achieving a high resolution and long detection range, a receiver using the equivalent time sampling method and a mixer with reference LO are adopted. Furthermore, a carrier-based transmitter can be used to digitally tune the center frequency and bandwidth. The expected target detection range is up to 5.7 m. The chip size is 2.8×2 mm2, and the power consumption is 96 mW at 1.2 V supply voltage.
구강 및 악안면 영역의 연조직 손상에 관한 임상적 연구
유준영,김용관,배준수,장현석,You, Jun-Young,Kim, Yong-Kwan,Bae, June-soo,Chang, Hyun-Seok 대한악안면성형재건외과학회 1997 Maxillofacial Plastic Reconstructive Surgery Vol.19 No.4
The soft tissue injuries of Oral & Maxillofacial region include abrasion, contusion, simple laceration, laceration of skin with underlying tissue, soft tissue injuries combined with facial bone fracture and involving functional structures such as facial nerve and vessel, orbit, lacrimal duct and salivary gland and so on. The results obtained were as follows ; 1. The age range was 1 to 97, and the highest incidence occured in the 3rd decade(23.4%), followed by the 1st decade(20.2%), 4th decade(18.1%), 4th decade(18.1), and 5th decade(14.3%) 2. The sexual ration was 4 : 1(M : F). 3. The most common cause of facial laceration was a accident(54.5), followed by blow(17.8%), traffic accident(15.9%) and unknown(10.8%). 4. The most frequently occurred site of injury was a forehead(24), followed by oral cavity(16.9%), lip(15%), eyebrow(14.5%), cheek(14%), chin(11.8%), nose(2%), scalp(1.4%) and neck(0.9%). 5. Most of wound size was less than 3cm in length. 6. 28 patients suffered facial bone fracture, representing 7%. 7. The major complications following facial laceration were infection and facial paralysis caused by facial nerve injuries, representing 4.5% and 1.9%.