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Patent applications and USPTO patent grants for Birgenheier; Raymond A..The latest application filed is for "if frequency response characterization employing overlapping frequency bands".
Patent | Date |
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Systems and methods of using IQ modulation for calibration or measurement Grant 7,397,865 - Moore , et al. July 8, 2 | 2008-07-08 |
IF frequency response characterization employing overlapping frequency bands Grant 7,310,504 - Birgenheier , et al. December 18, 2 | 2007-12-18 |
IF frequency response characterization employing overlapping frequency bands App 20050215217 - Birgenheier, Raymond A. ;   et al. | 2005-09-29 |
Systems and methods of using IQ modulation for calibration or measurement App 20040196925 - Moore, George S. ;   et al. | 2004-10-07 |
Method and apparatus for measuring modulation accuracy Grant 5,187,719 - Birgenheier , et al. February 16, 1 | 1993-02-16 |
Baseband modulation system with improved ROM-based digital filter Grant 5,140,613 - Birgenheier , et al. August 18, 1 | 1992-08-18 |
Digital premodulation filter Grant 4,757,519 - Collison , et al. July 12, 1 | 1988-07-12 |
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