题目/Title：An Energy/Bandwidth/Area Efficient Frequency-Domain OOK Transmitter with Phase Rotated Modulation

作者/Author：周冉冉,张益宁,李宇根,王志华
                        Ranran Zhou,Yining Zhang,Woogeun Rhee,Zhihua Wang

会议/Conference：ISCAS 2017

地点/Location：Baltimore, MD, USA

年份/Issue Date：2017.28-31 May

页码/pages：pp. 1 - 4

摘要/Abstract：
This paper proposes a frequency-domain OOK (F-OOK) modulation transmitter with a phase rotator and a 4-stage ring digital/voltage-controlled oscillator (D/VCO) to achieve high energy, bandwidth and area efficiencies. Both frequency deviation and frequency modulation are realized in the phase domain by utilizing the phase rotator. A 9-bit phase rotator covering a phase shifting range of 180° is designed with a phase resolution of 5.625° and phase steps of 32. A hybrid 2.4GHz PLL with a 4-stage ring D/VCO generates orthogonal signals as inputs of the phase rotator. The proposed F-OOK transmitter designed in 65nm CMOS consumes 5.4mW from a 1V supply at the maximum data rate of 10Mb/s, achieving an energy efficiency of 0.54nJ/bit.