Optimal Design of a Low-Power, Phase-Switching Modulator for Implantable Medical Applications
Optimal Design of a Low-Power, Phase-Switching Modulator for Implantable Medical Applications
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DOI：
10.1016/j.vlsi.2019.02.003
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
张力
中科院分区：
文献类型：
--
作者：
李大为;徐小伟;刘雷波;张力
Since first proposed in JSSC [1], phase-switching modulation has been proved to be a viable transmission scheme. In this paper, we explored the maximum data-rate of phase-switching modulation and proposed a modified quadrature oscillator with a self-bias circuit to isolate the disturbance in power supply and ground. Dividers and filter are also optimized to minimize parasitic resistor and capacitor. The prototype is fabricated in a 0.18 μm CMOS process, with an active chip area of about 0.13 mm *0.35 mm. The total power consumption of the modulator is only 2 mW with an energy efficiency of 80 pJ/Bit. This modulator has been successfully embedded in a direct-up conversion transmitter for medical application.
