DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Lee, Sang-Gug | - |
dc.contributor.advisor | 이상국 | - |
dc.contributor.author | Hong, Jong-Phil | - |
dc.contributor.author | 홍종필 | - |
dc.date.accessioned | 2011-12-28T02:55:59Z | - |
dc.date.available | 2011-12-28T02:55:59Z | - |
dc.date.issued | 2007 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=392791&flag=dissertation | - |
dc.identifier.uri | http://hdl.handle.net/10203/54837 | - |
dc.description | 학위논문(석사) - 한국정보통신대학교 : 공학부, 2007.2, [ vi, 49 p. ] | - |
dc.description.abstract | This thesis presents a backgate coupled QVCO with current reused structure, and complementary cross-coupled differential Colpitts VCO and QVCO. The formally proposed QVCO not only dissipates significantly lower power but also improves 1/$\It{f}^{3}$ close-in phase noise, compared to the conventional QVCO. For verification of the suggested idea, the proposed QVCO designed for 2 GHz operation based on a 0.18-$\mum$ CMOS technology. Measurements show -102 and -124 dBc/Hz at 100-kHz and 1-MHz offset, respectively, while dissipating a total current of 1.74 mA from a 1.25-V supply. The latterly proposed VCO is substituted gm-boosted Colpitts oscillator for the cross-coupled N-MOS switching pair in the conventional complementary cross-coupled differential LC-VCO. By reducing of supply voltage and providing high negative conductance at the given current consumption, the proposed VCO is possible to make low power design. A 1.8-GHz VCO and P-QVCO, adopting the proposed topology, are implemented in 0.25-$\mum$ CMOS technology. From the measurement result, the fabricated VCO and QVCO shows phase noise of -116.8 and -117.7 dBc/Hz at 1-MHz offset while dissipating only 0.4 and 1.1 mA from 0.9-V supply, respectively. | eng |
dc.language | eng | - |
dc.publisher | 한국정보통신대학교 | - |
dc.title | Low power CMOS differential LC-VCO and QVCO design | - |
dc.title.alternative | CMOS 공정을 이용한 저 전력 차동 전압제어 발진기 및 4위상 전압제어 발진기 설계 | - |
dc.type | Thesis(Master) | - |
dc.identifier.CNRN | 392791/225023 | - |
dc.description.department | 한국정보통신대학교 : 공학부, | - |
dc.identifier.uid | 020054619 | - |
dc.contributor.localauthor | Lee, Sang-Gug | - |
dc.contributor.localauthor | 이상국 | - |
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