Invention Grant
- Patent Title: Measuring load impedance of an amplifier driving a variable load
- Patent Title (中): 测量驱动可变负载的放大器的负载阻抗
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Application No.: US12368995Application Date: 2009-02-10
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Publication No.: US08412136B2Publication Date: 2013-04-02
- Inventor: Apu Sivadas , Gireesh Rajendran , Subhashish Mukherjee
- Applicant: Apu Sivadas , Gireesh Rajendran , Subhashish Mukherjee
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent Wade J. Brady, III; Frederick J. Telecky, Jr.
- Priority: IN359/CHE/2008 20080212
- Main IPC: H01Q11/12
- IPC: H01Q11/12 ; H04B1/04
Abstract:
According to an aspect of the present invention, the magnitude and phase angle of looking-in impedance driven by an amplifier are computed in digital domain during normal operation within a module containing the amplifier. In an embodiment, the computed magnitude and phase angle are used for impedance matching at a node driven by the amplifier. As a result, impedance matching may be obtained even in situations when the impedance changes during operation.
Public/Granted literature
- US20090201088A1 Measuring Load Impedance Of An Amplifier Driving A Variable Load Public/Granted day:2009-08-13
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