N-pole filter circuit having cascaded filter sections专利检索-跨导放大器放大器电子零件及设备专利检索查询-专利查询网

N-pole filter circuit having cascaded filter sections

阅读：861发布：2022-07-21

专利汇可以提供N-pole filter circuit having cascaded filter sections专利检索，专利查询，专利分析的服务。并且The n-pole filter preferably has four filter circuits cascaded in series. Each of the filter circuits is preferably a low-pass filter circuit and each has a controllable frequency response which is variably controlled from a common current or voltage source. Each filter circuit includes a transconductance circuit and inverting operational amplifier. A feedback resistor couples between the first and last filter circuits and is adjustable to provide different amounts of resonance.，下面是N-pole filter circuit having cascaded filter sections专利的具体信息内容。

权利要求

1. An active low-pass filter having a selectable cutoff frequency and providing a controllable resonance peak in the vicinity thereof, comprising A. n low-pass series-connected filter sections, each having an input and an output and characterized by a cutoff frequency selected by a control current applied thereto, each contributing a phrase shaft of 180/n degrees at resonance, B. a current source responsive to control input applied thereto to provide a substantially identical control current to each filter section for selecting the cutoff frequency thereof, in accordance with said control input, and C. a resistor interconnecting the output of a last of said filter with the input of a first thereof and adjustable to vary the resonance peak of the filter.

2. A filter according to claim 1 in which n equals 4.

3. A filter according to claim 2 which includes a plurality of resistors interconnecting corresponding pairs of filter sections.

4. A filter according to claim 2 in which each filter section comprises an integrator and a variable conductance means forming a part thereof.

5. A filter according to claim 2 which includes a voltage to current converter for converting a control voltage to a corresponding current for supplying the control input to said current source.

说明书全文

相关专利内容

标题	发布/更新时间	阅读量
高电源抑制比低温漂的带隙基准源	2020-05-08	138
一种具有预稳压结构的高电源抑制比带隙基准电路	2020-05-12	577
光学检测像素单元、电路、光学检测方法和显示装置	2020-05-13	446
可变增益放大电路	2020-05-08	675
一种宽带低噪声放大器	2020-05-12	937
开关变换器及其控制方法和控制电路	2020-05-13	810
晶体振荡器控制电路以及相关的振荡器装置	2020-05-13	699
一种三阶谐波抑制串联N路滤波器及接收机前端	2020-05-11	764
一种电容屏的噪声检测电路、检测方法及移动终端	2020-05-12	105
一种恒流控制电路及开关电源电路	2020-05-11	735

高效检索全球专利

专利汇是专利免费检索,专利查询,专利分析-国家发明专利查询检索分析平台，是提供专利分析，专利查询，专利检索等数据服务功能的知识产权数据服务商。

我们的产品包含105个国家的1.26亿组数据，免费查、免费专利分析。

申请试用

分析报告

专利汇分析报告产品可以对行业情报数据进行梳理分析，涉及维度包括行业专利基本状况分析、地域分析、技术分析、发明人分析、申请人分析、专利权人分析、失效分析、核心专利分析、法律分析、研发重点分析、企业专利处境分析、技术处境分析、专利寿命分析、企业定位分析、引证分析等超过60个分析角度，系统通过AI智能系统对图表进行解读，只需1分钟，一键生成行业专利分析报告。

申请试用

跨导放大器热门专利

热门分类

N-pole filter circuit having cascaded filter sections

该功能需要专业版企业版VIP权限，您可以：