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최상훈(Sanghoon Choi),이원조(WONJO LEE),조항기(Hangki Cho),나희경(Heukyong Na),김상국(Sangkook Kim),권대혁(Daehyuk Kwon),천동필(Dongpil Chun) 한국자동차공학회 2003 한국자동차공학회 Symposium Vol.2003 No.8
An integrated antenna module for RSE in DSRC system is proposed, designed, and manufactured. A waveguide slot array antenna with strip dipoles is used and an analytical technique is applied for the fast design of the array antenna. An RF module is integrated into the waveguide assembly. The results show that the antenna module conforms to the DSRC standards with advantage of cost and size.<br/>
최상훈(Sanghoon Choi),이원조(Wonjo Lee),김상국(Sangkook Kim),권대혁(Daehyuk Kwon),천동필(Dongpil Chun) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Automatic Vehicle Identification (AVI) is the key for secure and convenient hands-free access control. The RFID system provides this with its long read range (up to 5 meters), UHF passive tags and high-security transmission protocol. The operating frequency and low output power allows for installations worldwide the meeting the regulation standard for site licensing in each country. Examples of installations include both commercial and corporate parking areas, gated communities, ports, airports, industries, universities etc. RFID technology also provides products and solutions that bridge the gap between personal access and automatic vehicle access. RFID products are used in proprietary systems, standard access control systems as well as in major parking equipment systems.
Jun-Young Lee,Sangkook Choi,Sang-Koog Kim 한국자기학회 2006 Journal of Magnetics Vol.11 No.2
Dynamic behaviors of transverse domain walls (TDWs) in rectangular shaped thin-film magnetic nanowires with different widths under applied magnetic fields less than the Walker field were studied by micromagnetic simulations. It was found that the velocity of stable TDWs in the viscous region increases from 147 to 419 ㎧ and their mass decreases from 6.24 × 10?²³ to 2.70 × 10?²³ ㎏ with increasing strength of the applied magnetic field ranging from 5 to 20 Oe for the nanowire with a dimension of 10 ㎚ in thickness and 5 ㎛ in length, and 50 ㎚ in width. With increasing the width of nanowires from 50 to 125 ㎚ at a specific field strength of 5 Oe, the TDW’s velocity also increases from 147 to 246 ㎧ and its mass decreases from 6.24 × 10?²³ to 5.91 × 10?²³ ㎏.