排序方式: 共有33条查询结果,搜索用时 15 毫秒
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设计了一种基于硅基等离子体的波导缝隙频率可重构天线.首先对横向PIN二极管进行了介绍,并以横向PIN二极管为基础提出了一种双横向PIN二极管结构,叙述了双横向PIN二极管的工作原理.其次,结合双横向PIN二极管和波导缝隙天线,提出了一种新型的波导缝隙频率可重构天线,并对天线进行建模与仿真,仿真结果表明:该天线实现了103.5、104和104.5 GHz的频率可重构. 相似文献
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LCoS伽马校正电路的研究 总被引:1,自引:0,他引:1
提出了一种应用于硅上液晶(LCoS)的伽马校正电路.双梯电阻数模转换器是伽马校正电路的一个重要组成部分.双梯电阻数模转换器由粗分电阻级和细分电阻级组成,其最大优点是占用版图面积小.提出的10位双梯电阻数模转换器仅由80个电阻、2个4-16译码器、1个2-4译码器和一些开关组成,供电电压是5 V.该数模转换器由0.35μm CMOS工艺实现.后仿真结果表明,数模转换器的微分非线性和积分非线性分别小于±0.5 LSB和±0.4 LSB.最后,对伽马校正电路进行了仿真,给出了伽马校正电路输出的液晶伽马校正曲线,仿真结果表明伽马校正电路能够满足LCoS显示系统的要求.Abstract: One gamma correction circuit for liquid crystal on silicon (LCoS) is proposed. Dual ladder resistor DAC (Digital to Analog Converter) is one of main components of the gamma correction circuit. Dual ladder resistor DAC consists of coarse resistor stage and fine resistor stage. The most advantage of the DAC is that its layout area is small. In this paper, the proposed 10-bit dual ladder resistor DAC only requires eighty resistors, two 4-to-16 decoders, one 2-to-4 decoder and some switches with a supply voltage of 5 V. This DAC is implemented by 0.35 m CMOS technology. The post simulation results that its differential non-linearity (DNL) and integral non-linearity (INL) are less than 0. 5 LSB and 0. 4 LSB, respectively. Meanwhile, the gamma correct circuit was simulated, and the gamma correction curve of liquid crystal is given. Simulation results show that the gamma correction circuit can meet the requirements of LCoS display system. 相似文献
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结合注射模标准件的特点,在三维参数化建模软件Pro/Engineer的平台上,以VC 为开发语言,Pro/TOOLKTT为开发工具,实现了注射模CAD系统中标准件库的开发及图形生成,并给出了实现方法的实例. 相似文献
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结合注射模标准件的特点,在三维参数化建模软件Pro/Engineer的平台上,以VC + +为开发语言,Pro/TOOLK IT为开发工具,实现了注射模CAD系统中标准件库的开发及图形生成,并给出了实现方法的实例 相似文献
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