Invention Grant
- Patent Title: Method and apparatus for automatic alignment of notch filters
- Patent Title (中): 陷波滤波器自动对准的方法和装置
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Application No.: US11217656Application Date: 2005-08-31
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Publication No.: US07738610B2Publication Date: 2010-06-15
- Inventor: Seong K. Chan , Jeffery K. Hunter
- Applicant: Seong K. Chan , Jeffery K. Hunter
- Applicant Address: US NJ Morristown
- Assignee: Honeywell International Inc.
- Current Assignee: Honeywell International Inc.
- Current Assignee Address: US NJ Morristown
- Agency: Fogg & Powers LLC
- Main IPC: H04B1/10
- IPC: H04B1/10

Abstract:
A method and apparatus are provided for automatic alignment of a notch filter in a receiver. The method comprises the steps of determining a frequency of an interfering signal, monitoring an energy in the interfering signal, tuning the notch filter based on an initial tune value, detecting an energy content in the radio signal after the tuning step, incrementally tuning the notch filter away from the initial tune value while monitoring the energy in the interfering signal, repeating the step of detecting and the step of incrementally tuning until the energy in the interfering signal is minimized, and storing a new tune value as the initial tune value. The notch filter is configured to filter the radio signal. The new tune value indicates a minimized energy in the interfering signal.
Public/Granted literature
- US20070047681A1 Method and apparatus for automatic alignment of notch filters Public/Granted day:2007-03-01
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