一种基于双极型OTA的窄带滤波器设计

山东大学学报(工学版) ›› 2010, Vol. 40 ›› Issue (1): 129-132.

一种基于双极型OTA的窄带滤波器设计

罗敏王晨旭李浩

哈尔滨工业大学(威海)微电子中心, 山东威海 264209

收稿日期:2009-03-20 出版日期:2010-02-16 发布日期:2009-03-20
作者简介:罗敏(1978-),男,四川南充人,讲师,硕士,主要研究方向为模拟、混和信号集成电路设计. E-mal: cn.minLuo@gmail.com

A design of NBF based on bipolar OTA

Microelectronic R＆D Center, Harbin Institute of Technology in Weihai, Weihai 264209, China

Received:2009-03-20 Online:2010-02-16 Published:2009-03-20

摘要/Abstract

摘要：

采用上华(CSMC)0.6μm BiCMOS工艺设计了一个应用于红外接收芯片中的中心频率和带宽正交可调的集成窄带滤波器。该滤波器主要由双极型器件搭建的跨导运算放大器(OTA)组成,通过将OTA接成回转器模拟电感来替换LC梯形滤波器中的电感,实现了有源网络模拟无源LC梯形结构。经过HSPICE仿真验证,该滤波器的中心频率为38.02kHz,带宽为3.92kHz,且中心频率和带宽能够正交调节，具有很好的性能,满足了红外接收芯片的需要。

关键词: 窄带滤波器;OTA单元;正交可调

Abstract:

A narrow band filter used in IRDA IC whose central frequency and band width can be orthogonally modulated was designed using the CSMC 0.6μm BiCMOS process. The narrow band filter consisted of bipolar OTA cells. With thesimulation of HSPICE, the conclusion could be obtained that the central frequency of this filter was 38.02kHz, the band width was 3.92kHz, and the central frequencyand the bind width could be orthogonally modulated, which can represent the outstanding capability of this filter.

Key words: narrow band filter; OTA cell; orthogonal modulation

罗敏王晨旭李浩. 一种基于双极型OTA的窄带滤波器设计[J]. 山东大学学报(工学版), 2010, 40(1): 129-132.

LUO Min, WANG Chen-Xu, LI Hao. A design of NBF based on bipolar OTA[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2010, 40(1): 129-132.

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