Invention Grant
- Patent Title: Third order derivative distortion cancellation for ultra low power applications
- Patent Title (中): 用于超低功耗应用的三阶微分失真消除
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Application No.: US12143623Application Date: 2008-06-20
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Publication No.: US07936214B2Publication Date: 2011-05-03
- Inventor: Viacheslav Igorevich Suetinov
- Applicant: Viacheslav Igorevich Suetinov
- Applicant Address: US MN Minneapolis
- Assignee: Medtronic, Inc.
- Current Assignee: Medtronic, Inc.
- Current Assignee Address: US MN Minneapolis
- Agent Stephen W. Bauer; Michael J. Ostrom
- Main IPC: H03F1/26
- IPC: H03F1/26
Abstract:
An apparatus and method for the cancellation of third order derivative distortion for ultra low power (ULP) applications are disclosed involving a first amplifier connected in parallel with a second amplifier for amplifying a received signal. The first amplifier includes at least one transistor operating in the sub-threshold region such that the first amplifier possesses a positive third derivative of a transfer function of the first amplifier, which generates a first amplified signal having in phase third order distortions. The second amplifier includes at least one differential pair of transistors operating in the sub-threshold region such that the second amplifier possesses a negative third derivative of a transfer function of the second amplifier, which generates a second amplified signal having in opposite phase third order distortions. The first and second amplified output signals are combined resulting in cancellation of third order distortions in the combined amplified signal.
Public/Granted literature
- US20090243724A1 Third Order Derivative Distortion Cancellation for Ultra Low Power Applications Public/Granted day:2009-10-01
Information query
