지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2011.11
- 수록면
- 377 - 380 (4page)
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초록· 키워드
오류제보하기
The value of distributed sensors, embedded biomedical implants, and other wireless microsystems is the information they collect, process, and transmit over time. Unfortunately, powering such tiny devices for extended periods is a major challenge because miniaturized batteries cannot store sufficient energy and connecting wires to recharge the batteries demands considerable space overhead. Electromagnetically coupling energy to recharge these devices wirelessly is possible, but practical only if power losses are low enough for sufficient energy to reach the batteries. Because small inductors capture little energy, minimizing the power that switches dissipate to energize and de-energize an inductor is critical. This paper presents how transmitted power changes with distance and, as a result, with inductive coupling factor k<SUB>C</SUB>, and shows how to use that information to minimize the power lost in the interconnecting MOSFETs. This way, a 0.18-㎛ near-field electromagnetic energy-harnessing IC loses on average (in simulations) 3 W across k<SUB>C</SUB>"s ranging from 0.01 to 0.1, which roughly represents 3.9% of the total power transferred.
목차
Abstract
I. POWERING MICROSYSTEMS WIRELESSLY
II. HARNESSING ELECTROMAGNETIC ENERGY
III. MOS SWITCH LOSSES
IV. EFFECTS OF INDUCTIVE COUPLING FACTOR KC
V. MINIMIZING MOSFET LOSSES
VI. CONCLUSIONS
REFERENCES
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UCI(KEPA) : I410-ECN-0101-2013-569-001475173