DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Yu, Jong-Won | - |
dc.contributor.advisor | 유종원 | - |
dc.contributor.author | Lee, Han-Lim | - |
dc.contributor.author | 이한림 | - |
dc.date.accessioned | 2011-12-14T01:35:47Z | - |
dc.date.available | 2011-12-14T01:35:47Z | - |
dc.date.issued | 2010 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=455202&flag=dissertation | - |
dc.identifier.uri | http://hdl.handle.net/10203/36655 | - |
dc.description | 학위논문(석사) - 한국과학기술원 : 전기 및 전자공학과, 2010.08, [ vi, 53 p.: ] | - |
dc.description.abstract | In this paper, a new balanced Doppler radar front-end architecture with Tx leakage canceller for antenna impedance variation and antenna mutual coupling is proposed. Consisting of two quadrature hybrids, two ring hybrids and 4-port feed antenna system, the proposed balanced structure achieves high transmit/receive (Tx/Rx) isolation stable to antenna impedance variation and antenna mutual coupling. The proposed 4-port feed antenna is configured by dual fed 2x1 patch array having 6.97 dBi and 5.65 dBi of measured Tx and Rx peak gain, respectively. In addition, the proposed architecture undergoes no power loss in both transmit and receive paths, and obtains the measured Tx/Rx isolation of more than -45 dB stable at 24 GHz regardless of the load variation. The proposed architecture that can determine the speed as low as 0.5 mm/s (0.078 Hz Doppler shift) is theoretically and experimentally analyzed for high isolation despite of antenna mismatch. | eng |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | antenna isolation | - |
dc.subject | load impedance variation | - |
dc.subject | 24 GHz doppler radar | - |
dc.subject | Tx leakage | - |
dc.subject | mutual coupling | - |
dc.subject | 상호 결합성 | - |
dc.subject | 안테나 격리성 | - |
dc.subject | 로드 임피던스 변화 | - |
dc.subject | 24GHz 도플러 레이더 | - |
dc.subject | 송신 누설 | - |
dc.title | Design of 24 GHz balanced doppler radar front-end with a stable tx leakage canceller | - |
dc.title.alternative | 안정적인 송신 누설 신호 제거 특성을 갖는 24 GHz 도플러 레이더 전치단 설계 | - |
dc.type | Thesis(Master) | - |
dc.identifier.CNRN | 455202/325007 | - |
dc.description.department | 한국과학기술원 : 전기 및 전자공학과, | - |
dc.identifier.uid | 020084159 | - |
dc.contributor.localauthor | Yu, Jong-Won | - |
dc.contributor.localauthor | 유종원 | - |
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