使用差分方法消除微机电滤波器的穿通以及对由此引入的陷波现象的分析

This paper presents and analyzes a notch observed in MEMS(micro electric mechanical system) filter characterization using the difference method.The difference method takes advantage of the cancellation of parasitic feed-through,which could potentially obscure the relatively small motional signal and lead to failure in characterization of the MEMS components.In this paper,typical clamped-clamped beam MEMS filters are fabricated and characterized with the difference method.Using the difference method a better performance is obtained but a notch is induced as a potential problem.Analysis is performed and reveals the mismatch of the two differential excitation signals in measurement circuit contributes to the notch.The relevant circuit design rule is also proposed to avoid the notch in the difference method.     

论红色旅游当前存在的问题与深度开发

文章针对当前红色旅游在开发深度、旅游产品、主题特色、景点生态环境等方面存在的制约红色旅游深度发展的问题,试提出＂五个结合＂的解决方案,即红红结合、红绿结合、红黄结合、动静结合、历史和现代结合,实现红色旅游由准旅游向元旅游的靠拢。     

浅谈高职国际贸易教研室的工作思路

本文以国际贸易教研室为例,以课程建设、专业建设和日常教学管理三项教研室常规工作的开展为切入点,简要论述了教研室在调动教师积极性、提高教师思想认识、增强教师素质、建设精品课程、建设精品专业、改善实习实训设备和环境等方面的工作思路。