Paul F. Ferguson, Jr.
28Patents
16h-index
22Co-inventors
81Inventor score
Filing activity: Jan 31, 1990 → Feb 12, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5495200A | Double sampled biquad switched capacitor filter | Electricity | 125 | Expired |
| US6917321B1 | Method and apparatus for use in switched capacitor systems | Electricity | 81 | Expired |
| US5311181A | Sigma delta modulator | Electricity | 66 | Expired |
| US6040793A | Switched-capacitor sigma-delta analog-to-digital converter with input voltage overload protection | Electricity | 64 | Expired |
| US5412387A | Error reduction in switched capacitor digital-to-analog converter systems by balanced sampling | Electricity | 61 | Expired |
| US5323158A | Switched capacitor one-bit digital-to-analog converter | Electricity | 53 | Expired |
| US5055843A | Sigma delta modulator with distributed prefiltering and feedback | Electricity | 51 | Expired |
| US5621345A | In-phase and quadrature sampling circuit | Electricity | 50 | Expired |
| US5789974A | Calibrating the DC-offset of amplifiers | Electricity | 46 | Expired |
| US5764103A | Switching amplifiers into and out of circuits with reduced output noise | Electricity | 31 | Expired |
| US6271784A | Capacitor-based digital-to-analog converter with continuous time output | Electricity | 30 | Expired |
| US7199740B1 | Method and apparatus for use in switched capacitor systems | Electricity | 28 | Expired |
| US5689201A | Track-and-hold circuit utilizing a negative of the input signal for tracking | Physics | 26 | Expired |
| US5381148A | Method and apparatus for calibrating a gain control circuit | Electricity | 24 | Expired |
| US6897715B2 | Multimode voltage regulator | Emerging Cross-Sectional Technologies | 24 | Expired |
| US5331221A | Gain linearity correction for MOS circuits | Electricity | 20 | Expired |
| US6005431A | High band width, high gain offset compensating amplifier system for a read channel | Electricity | 15 | Expired |
| US5363102A | Offset-insensitive switched-capacitor gain stage | Electricity | 15 | Expired |
| US6624772B1 | Offset calibration system | Electricity | 13 | Expired |
| US6873278B1 | Method and apparatus for use in switched capacitor systems | Electricity | 12 | Expired |
| US8570200B2 | Continuous-time oversampled converter having enhanced immunity to noise | Electricity | 12 | Active |
| US5451950A | Method for reducing errors in switched-capacitor digital-to-analog converter systems and apparatus therefor | Electricity | 8 | Expired |
| US7259706B2 | Balanced dual resistor string digital to analog converter system and method | Electricity | 7 | Expired |
| US7138848B2 | Switched capacitor integrator system | Electricity | 4 | Expired |
| US7292832B2 | Timing and frequency control method and circuit for digital wireless telephone system terminals | Electricity | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.