Patent · US Active

Leakage independent very low bandwith current filter

US7868688B2 · kind B2 · utility

2Cited by

6References

6Claims

0Family size

Assignee

Cosmic Circuits Private Limited · IN

Inventors

Prakash Easwaran · Bengaluru, IN
Prasenjit Bhowmik · Bengaluru, IN
Sumeet Mathur · Bengaluru, IN

Key dates

Filing date	May 9, 2009
Grant date	Jan 11, 2011
Priority date	—
Expiry date	May 9, 2029

Classification

Technology area (CPC H)Electricity
CPC primaryH03H11/1213
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A current filter circuit is provided. The current filter circuit comprises a source transistor comprising a drain, a gate, and a source. The source of the source transistor is coupled to a reference voltage terminal, the gate of the source transistor is coupled to the gate of a mirror transistor, and the drain of the source transistor is coupled to a reference current source. The mirror transistor comprises a drain, a gate, and a source. The source of the mirror transistor is coupled to the reference voltage terminal, the gate is coupled to the gate of the source transistor, and the drain is coupled to a load. The current filter circuit comprises a low pass filter for filtering noise. The current filter circuit also comprises an impedance reduction circuit coupled to the drain of the mirror transistor for reducing bandwidth of the current filter circuit.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.