Invention Grant
- Patent Title: Low distortion filters
- Patent Title (中): 低失真滤波器
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Application No.: US13822214Application Date: 2011-09-02
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Publication No.: US09000839B2Publication Date: 2015-04-07
- Inventor: Shanthi Pavan Yendluri , Siva Viswanathan Thyagarajan
- Applicant: Shanthi Pavan Yendluri , Siva Viswanathan Thyagarajan
- Applicant Address: IN New Delhi IN Chennai
- Assignee: The Secretary, Department of Information and Technology,Indian Institute of Technology, Madras
- Current Assignee: The Secretary, Department of Information and Technology,Indian Institute of Technology, Madras
- Current Assignee Address: IN New Delhi IN Chennai
- Agency: Frost Brown Todd LLC
- Priority: IN2555/CHE/2010 20100902
- International Application: PCT/IN2011/000601 WO 20110902
- International Announcement: WO2012/029078 WO 20120308
- Main IPC: H03K5/00
- IPC: H03K5/00 ; H03H11/02 ; H03F3/21 ; H03F3/45
Abstract:
An integrated continuous-time active-RC filter comprises a set of opamp integrators with Operational Transconductance Amplifiers (OTAs), and at least one assistant transconductor connected between an input and an output of each of the integrators of the set; wherein the assistant transconductor comprises a plurality of sets of MOSFETS connected in parallel to each other wherein each set of MOSFETS is formed by a pair of MOSFETs connected in series, with one MOSFET of the pair operating in the triode region and the other MOSFET of the pair operating in the saturation region; and wherein the assistant transconductor is configured to inject an assistant current into the output of each of the integrators in the set to enhance the linearity and speed of the opamp integrators of the set.
Public/Granted literature
- US20130222054A1 LOW DISTORTION FILTERS Public/Granted day:2013-08-29
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