David R. Helms
18Patents
10h-index
26Co-inventors
72Inventor score
Filing activity: Sep 18, 1989 → Apr 20, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5049841A | Electronically reconfigurable digital pad attenuator using segmented field effect transistors | Electricity | 88 | Expired |
| US5491450A | Low power consumption process-insensitive feedback amplifier | Electricity | 25 | Expired |
| US6448858B1 | Mask layout for sidefed RF power amplifier | Electricity | 24 | Expired |
| US5969575A | Class A/F amplifier having second and third order harmonic input and output filtering and self bias distortion correction | Electricity | 17 | Expired |
| US6825725B1 | Integrated power amplifier circuit | Electricity | 16 | Expired |
| US6917243B2 | Integrated power amplifier circuit | Electricity | 16 | Expired |
| US6259324A | Active bias network circuit for radio frequency amplifier | Electricity | 13 | Expired |
| US6882220B2 | Integrated power amplifier circuit | Electricity | 12 | Expired |
| US6822511B1 | Integrated power amplifier circuit | Electricity | 12 | Expired |
| US4947136A | Variable gain distributed amplifier | Electricity | 11 | Expired |
| US7205836B2 | SiGe differential cascode amplifier with miller effect resonator | Electricity | 5 | Expired |
| US6373339B1 | Active bias network circuit for radio frequency amplifier | Electricity | 4 | Expired |
| US8918068B1 | Wide bandwidth RF power limiter | Electricity | 3 | Active |
| US8963645B1 | Integrated-circuit amplifier with low temperature rise | Electricity | 2 | Active |
| US8466747B1 | Integrated-circuit amplifier with low temperature rise | Electricity | 2 | Active |
| US9219450B1 | High linearity low noise amplifier | Electricity | 0 | Active |
| US9819316B2 | Apparatus and method for gallium nitride (GaN) amplifiers | Electricity | 0 | Active |
| US9240756B1 | High linearity, high efficiency, low noise, gain block using cascode network | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.