ID 原文 译文
42526 LED 芯片测试结果表明，外量子效率维持率随着螺位错密度的增加而提升，从 46. 1%增加到 54. 9%; TheLED chip test results show that the external quantum efficiency maintenance ratio increases from 46.1%to 54.9% with the increase of screw dislocation density.
42527 但随着刃位错密度的增加而降低。 However, it decreases with the increase of edgedislocation density.
42528 刃位错是非辐射复合中心，会加剧高电流密度下的光效衰减效应; The edge dislocation is a nonradiative recombination center which can intensify the efficiency droop effect.
42529 而螺位错不是明显的非辐射复合中心，较高的螺位错密度可以改善 LED 的光效衰减效应。 On the contrary, the screw dislocation is not an obvious nonradiative recombinationcenter, and the higher screw dislocation density can alleviate the efficiency droop effect.
42530 因此可以通过适当增加螺位错密度来提升 LED 的外量子效率。 Therefore the external quantum efficiency of the LED can be improved by increasing the screw dislocation density
42531 基于 0. 25 μm GaAs 赝配高电子迁移率晶体管 ( PHEMT) 工艺，研制了一款高性能 X波段四路开关滤波器微波单片集成电路 ( MMIC) 芯片。 Based on the 0.25 μm GaAs pseudomorphic high electron mobility transistor (PHEMT)technology, a high performance X-band four channel switching filter monolithic microwave integrated circuit (MMIC) was developed.
42532 芯片内集成了输入和输出单刀四掷( SP4T) 开关、驱动器和带通滤波器，实现了开关滤波功能。 The input and output single-pole four-throw (SP4T) switches, drivers andband-pass filters were integrated in the chip, realizing the switching filtering function.
42533 输入和输出 SP4T 开关结构相同，各支路都采用串－并联混合形式实现。 The input and output SP4T switches had the same structure, and each branch was implemented in a series-shunt hybridform.
42534 驱动器集成在片内，由一位低电平 ( 0 ～ 0. 4 V) 或高电平( 3. 3 ～ 5. 5 V) 信号控制 SP4T 开关中某一支路的导通或关断。 The driver was integrated in the chip and was controlled by a low level (0－0.4 V) or a high level(3.3－5.5 V) signal to turn on or off a branch of the SP4T switch.
42535 带通滤波器采用分布参数梳状线结构，开路端加载金属－绝缘体－金属 ( MIM) 电容，减小滤波器尺寸的同时拓宽了其阻带带宽。 The distributed combline structure wasused in the band-pass filter and the open end of band-pass filters was loaded by the metal-insulator-metal(MIM) capacitors, which reduced the size and broadened the stopband bandwidth of the filter.