Patent · US Active

Programmable attenuator

US8903344B2 · kind B2 · utility

2Cited by

8References

17Claims

0Family size

Assignee

QUALCOMM Incorporated · US

Inventors

Hongyan Yan · San Diego, US
Bhushan Shanti Asuri · San Diego, US
Vinod V. Panikkath · San Diego, US
Janakiram Ganesh Sankaranarayanan · San Diego, US
Himanshu Khatri · San Diego, US

Key dates

Filing date	Nov 30, 2010
Grant date	Dec 2, 2014
Priority date	—
Expiry date	Jul 13, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH03H7/24
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

Disclosed are circuits, techniques and methods for implementing an attenuator in a signal transmission path. In one particular implementation, an attenuation may be adjusted based, at least in part, on a control signal. In another implementation, such an attenuation may be adjusted in coarse increments by varying one or more gate voltages applied one or more transistors. In yet another implementation, adjusting said attenuation in fine increments by varying a bias voltage applied to at least one level shifter.

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