Invention Grant
- Patent Title: Impedance measurement in an active radio frequency transmitter
- Patent Title (中): 有源射频发射机中的阻抗测量
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Application No.: US12421519Application Date: 2009-04-09
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Publication No.: US08213885B2Publication Date: 2012-07-03
- Inventor: Brian Walker
- Applicant: Brian Walker
- Applicant Address: CA Hackett's Cove, Nova Scotia
- Assignee: Nautel Limited
- Current Assignee: Nautel Limited
- Current Assignee Address: CA Hackett's Cove, Nova Scotia
- Agency: Jenkins, Wilson, Taylor & Hunt, P.A.
- Agent Vincent K. Gustafson
- Main IPC: H03C1/62
- IPC: H03C1/62
Abstract:
A transmitter and method for determining impedance measurement in an active radio frequency transmitter of an antenna are provided. Voltage and current samples are obtained from a modulating signal delivered to an antenna. The voltage and current samples are converted from analog to digital format, and decimation occurs to reduce the number of samples. Complex demodulation is performed of each of the voltage and current samples to baseband levels and decimation of the voltage and current samples is performed to reduce the number of samples. An impedance estimate can then be estimated from the voltage and current samples.
Public/Granted literature
- US20090258614A1 IMPEDANCE MEASUREMENT IN AN ACTIVE RADIO FREQUENCY TRANSMITTER Public/Granted day:2009-10-15
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