DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Hong, Song-Cheol | - |
dc.contributor.advisor | 홍성철 | - |
dc.contributor.author | Kong, Sun-Woo | - |
dc.contributor.author | 공선우 | - |
dc.date.accessioned | 2015-04-23T06:12:37Z | - |
dc.date.available | 2015-04-23T06:12:37Z | - |
dc.date.issued | 2014 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=568583&flag=dissertation | - |
dc.identifier.uri | http://hdl.handle.net/10203/196547 | - |
dc.description | 학위논문(박사) - 한국과학기술원 : 전기및전자공학과, 2014.2, [ x, 80 p. ] | - |
dc.description.abstract | A radar measures the distance between the radar and targets. Multiple-radar arrays are used for two-dimensional location applications. The radar array with widely separated antennas finds the crossing of range circles for the target location. The multiple-input multiple-output (MIMO) operation jointly processes the multiple signals from the multiple radar transceivers (TRXs) of the array to acquire improved radar parameters, such as a spatial resolution and diversity and target coverage. Synchronization among the radar TRXs is very important for the MIMO operation. A new MIMO ultra-wideband (UWB) radar is presented with a wireless synchronization method. Chapter 2 describes the UWB CMOS low-noise mixer. Low noise figure (NF) is required for a enough sensitivity with a minimum integration-number of echo signals. An UWB radar system should have a wide bandwidth to obtain high-range resolution using a pulse signal with a very short pulse width. The excessive power consumption from the multiple radar TRXs demands to decrease the power consumption of the radar TRX. There are trade-offs in the UWB radar receiver. Amplifying the pulse signal at the carrier frequency requires multiple stages of low noise amplifier (LNA) as a necessity. This multi-stage LNA with Q-load is suffered from the trade-offs. The merged LNA and mixer not only has the wide bandwidth but also decreases the power consumption. The noise sources of a mixer topology are reduced by a proposed bleeding path g m -boosting and a common-gate gm-boosting technique. These allow the minimum NF of 3.61 dB while consuming the DC power of 2.6 mW at a 1.5 V supply. The measurement results show a conversion gain of 9.15 dB, a P1dB of -13 dBm, and an RF bandwidth of 20 GHz-26 GHz. The circuit was fabricated in TSMC 0.13um one-poly eight-metal CMOS technology with a chip area of 0.68 × 1.07 mm2. In Chapter 3, Coherent UWB radar TRX is described. UWB radar TRX has a feature of high accuracy distance estimation for ... | eng |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | MIMO | - |
dc.subject | 동기화 | - |
dc.subject | 초광대역 | - |
dc.subject | 상보형금속산화반도체 | - |
dc.subject | 레이다 | - |
dc.subject | 다중입출력 | - |
dc.subject | Radar | - |
dc.subject | CMOS | - |
dc.subject | UWB | - |
dc.subject | Synchronization | - |
dc.title | Widely-separated MIMO radar array using CMOS UWB transceiver | - |
dc.title.alternative | CMOS 초광대역 송수신기를 이용한 넓게 배치된 다중입출력 레이다 배열 | - |
dc.type | Thesis(Ph.D) | - |
dc.identifier.CNRN | 568583/325007 | - |
dc.description.department | 한국과학기술원 : 전기및전자공학과, | - |
dc.identifier.uid | 020095267 | - |
dc.contributor.localauthor | Hong, Song-Cheol | - |
dc.contributor.localauthor | 홍성철 | - |
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