本帖最后由 bbyeah 于 2011-9-24 15:36 编辑
6楼所言也有道理
目前最快的集成电路不知到了几十G？
mcuisp 发表于 2011-9-23 10:35 
今年Razavi发表了一篇300GHz 基于65nm CMOS工艺的振荡器
Fundamental oscillators prove the existence of gain at high frequencies, revealing the speed limitations of other circuits in a given technology. This paper presents an oscillator topology that employs feedback from an output stage to the core, thus achieving a high speed. The behavior of the proposed oscillator is formulated and simulations are used to compare it with the conventional cross-coupled pair circuit. Three prototypes realized in 65-nm CMOS technology operate at 205 GHz, 240 GHz, and 300 GHz, each drawing 3.7 mW from a 0.8-V supply. |
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