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Patent applications and USPTO patent grants for Helms; David Richard.The latest application filed is for "sige differential cascode amplifier with miller effect resonator".
Patent | Date |
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SiGe differential cascode amplifier with miller effect resonator Grant 7,205,836 - Helms , et al. April 17, 2 | 2007-04-17 |
Class A/F amplifier having second and third order harmonic input and output filtering and self bias distortion correction Grant 5,969,575 - Helms October 19, 1 | 1999-10-19 |
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