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A High-Q Resonant Inductive Link Transmit Driver With Adaptive-Predictive Phase-
提出一种高Q谐振电感链路传输驱动，通过自适应预测相位调制突破Q因子限制。
10 kHz–2 MHz, 0.18-µm 1.8–50-V CMOS/LDMOS
高Q谐振电感耦合相位调制瞬时调谐分数电容
▸瞬时调谐天线实现高频和相位调制
▸切换分数电容技术实现瞬时谐振调谐
▸集成混合信号驱动/调制/调谐系统
Abstract
Inductively coupled power transfer systems often
use high- Q antenna circuits to reduce losses and increase
transmission range. However, the narrow bandwidth due to the
high Q-factor conventionally constrains the modulation rate on
the carrier, creating a tradeoff between power transfer efficiency
and data rate. In this article, we show how instantaneous tuning
of the antenna can permit frequency and phase modulation
data rates beyond the Q-factor limitations, provided that the
drive and antenna