Brett C. Walker
25Patents
9h-index
38Co-inventors
75Inventor score
Filing activity: Jun 30, 1998 → Sep 14, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7076225B2 | Variable gain selection in direct conversion receiver | Electricity | 40 | Expired |
| US6711391B1 | Gain linearizer for variable gain amplifiers | Electricity | 31 | Expired |
| US8022756B2 | Output circuits with class D amplifier | Electricity | 30 | Active |
| US6154158A | Digital-to-analog converter D.C. offset correction comparing converter input and output signals | Electricity | 28 | Expired |
| US6278391A | Method and apparatus for D.C. offset correction in digital-to-analog converters | Electricity | 23 | Expired |
| US7174190B2 | Serial bus interface for direct conversion receiver | Electricity | 21 | Expired |
| US8750324B2 | Single wire bus interface | Electricity | 16 | Active |
| US6888913B2 | Wireless communication device with phase-locked loop oscillator | Electricity | 13 | Expired |
| US7062229B2 | Discrete amplitude calibration of oscillators in frequency synthesizers | Electricity | 12 | Expired |
| US7546097B2 | Calibration techniques for frequency synthesizers | Electricity | 9 | Expired |
| US6845083B2 | Multi-standard transmitter system and method for a wireless communication system | Electricity | 6 | Expired |
| US6882185B1 | Exponential current generator and method | Electricity | 6 | Expired |
| US8633763B2 | Output circuits with class D amplifier | Electricity | 5 | Active |
| US8536938B2 | Output circuits with class D amplifier | Electricity | 4 | Active |
| US11086342B1 | Low power high speed maximum input supply selector | Electricity | 3 | Active |
| US8615212B2 | Direct conversion receiver architecture | Electricity | 2 | Active |
| US8626099B2 | Direct conversion receiver architecture | Electricity | 2 | Active |
| US9736567B2 | Electronics interface for device headset jack | Electricity | 2 | Active |
| US9755518B2 | Current measurments in switching regulators | Electricity | 2 | Active |
| US7974317B2 | Systems and methods for controlling the voltage of signals used to control power amplifiers | Electricity | 2 | Active |
| US8019301B2 | Calibration techniques for frequency synthesizers | Electricity | 1 | Active |
| US7570925B2 | Discrete amplitude calibration of oscillators in frequency synthesizers | Electricity | 1 | Expired |
| US10615796B2 | Level shifter | Electricity | 1 | Active |
| US6906592B2 | Continuously variable gain radio frequency driver amplifier having linear in decibel gain control characteristics | Electricity | 1 | Expired |
| US7106138B2 | Continuously variable gain radio frequency driver amplifier having linear in decibel gain control characteristics | Electricity | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.