To solve these problems, this paper presents a high performance, namely low voltage, high linearity and high conversion gain, CMOS direct down conversion mixer for UWB (Ultra Wide Band) system.

基于这种背景，本文提出了一种应用于超宽带系统的高性能（低压、高线性度、高变频增益）直接下变频混频器，采用标准的CMOS工艺设计和实现。

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A direct harmonic analysis approach for AC-DC-AC conversion system was presented to simplify the complicated harmonic calculation process.

为了简化ac - DC - AC变换器复杂的谐波计算过程，采用直接谐波计算对变换器进行了谐波分析。

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This thesis mainly discusses direct-driven permanent magnet synchronous wind energy conversion system (WECS) used back-to-back PWM converter.

本文以双pwm变换器控制的直驱式永磁同步风力发电系统为研究对象。

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Panasonic's artificial photosysnthesis system has a simple structure with highly efficient CO2 conversion, which can utilize direct sunlight or focused light.

ENGADGET: Panasonic Photosynthesis System converts carbon dioxide to organic material with plant-like efficiency