【摘 要】
：
一些红外探测与跟踪系统及光学镀膜膜厚监控仪等设备,往往采用带通滤波器电路。高阶有源带通滤波器的体积小、重量轻、选择性好。本文介绍多重谐振子反馈电路。首先根据电路
论文部分内容阅读
一些红外探测与跟踪系统及光学镀膜膜厚监控仪等设备,往往采用带通滤波器电路。高阶有源带通滤波器的体积小、重量轻、选择性好。本文介绍多重谐振子反馈电路。首先根据电路结构推导其传输函数,然后按照高阶带通函数的要求,找出实现方法。对于其中的反馈电路和谐振子电路两部份,详细地讨论了设计计算方法,得出了比较简便的公式。利用这些公式,在给定中心频率,带宽和阶数的情况下,可以进行设计计算。最后,文中给出了几个设计实例。
Some infrared detection and tracking systems and optical coating thickness monitor and other equipment, often using band-pass filter circuit. High-order active band-pass filter of small size, light weight, good selectivity. This article describes the multi-harmonic oscillator feedback circuit. First of all, the transfer function is deduced according to the circuit structure, and then the realization method is found according to the requirement of high-order band-pass function. For the feedback circuit and the resonator circuit, the design calculation method is discussed in detail and the simple formula is obtained. Using these formulas, design calculations can be made given the center frequency, bandwidth, and order. Finally, several design examples are given.
其他文献
快闪存储器在存储数据方面有它的局限性,然而加上称作TrueFFS(True Flash File System)的控制软件,便可以使快闪存储器在读写时像是硬盘机,不需要另加处理器。M-Systems公司
不到塔里木河,很难想象到,那里的胡杨会有那么多,那么壮观美丽……三年前我曾去过内蒙古额济纳胡杨林采风,领略了那里的胡杨林的风采。不久前,又有幸走进了新疆塔里木河畔的
国际标准化组织(ISO)制订的质量标准体系已经被广泛地应用于企业管理方面,并取得非常显著的效果,得到世界公认。本文根据我校推行的全员质量管理,以及ISO9000和ISO14000标准
China’s forests are being expanded by tree-planting volunteers and national forestry programs
China’s forests are being expanded by tree-planting volunteers
尽管英特尔和微软联合起来阻止在今后的台式机中采用ISA总线,但以ISA为基础的PC/104嵌入式计算系统仍然在稳步发展。
Although Intel and Microsoft have joined forces to
创造《汉江怪物》票房大卖纪录的奉俊昊与韩国电视剧常青树金惠子首度合作,会激荡出怎样的火花?答案就是《母亲》。
Bong Jun Hao, who created the box office sales recor
通过不同应力水平下土工格栅的蠕变试验,分析了三种应变类型随应力和时间的变化过程,提出ε=ε(σ,t)形式的土工格栅本构模型,采用有限元程序ABAQUS的用户材料子程序UMAT对本
A novel one-dimensional inorganic-organic hybrid gallophosphate compound, Ga(2,2′-bipy)(HPO4)· (H2PO4)(denoted JGP-2) was synthesized hydrothermally with 2,2
PURPOSE.To compare frequency- doubling technology (FDT) perimetry with standard automated perimetry (SAP) for detecting glaucomatous visual field progression in
每一門科学都有它自己的独立的研究对象。正确闡明一門科学的研究对象,关系到一門科学的性质、任务、研究内容和方法,以及这門科学的发展問題;同时也决定着一門科学所具有的