题目/Title：A 3.5–4GHz FMCW radar transceiver design with phase-domain oversampled ranging by utilizing a 1-bit ΔΣ TDC

作者/Author：
                        Wei Zhang,Yizhi Han,Fei Chen,Bo Zhou,Xican Chen,Woogeun Rhee,Zhihua Wang

会议/Conference：VLSI-DAT 2014

地点/Location：Hsinchu

年份/Issue Date：2014.28-30 Apr.

页码/pages：pp. 1 - 4

摘要/Abstract：
A 3.5-4GHz FMCW radar transceiver employing a phase-domain oversampled ranging method is implemented in 0.18μm CMOS for short-range wireless sensor network (WSN) applications. To overcome the tradeoff between bandwidth and ranging resolution in the conventional FMCW radar, a digital phase rotator and a 1-bit ΔΣ TDC are utilized to realize the oversampled phase-domain ranging, achieving both wide capture range and fine resolution. The proposed ranging method is verified in the prototype FMCW transceiver hardware and the feasibility of sub-cm ranging capability is also demonstrated based on on-board modulation measurement.