Location History:
- Sichuan Sheng, CN (2022)
- Chengdu, CN (2022)
Company Filing History:
Years Active: 2022
Title: Innovations by Yunfu Zhang
Introduction
Yunfu Zhang is a notable inventor based in Heilongjiang Sheng, China. He has made significant contributions to the field of amplifier technology, holding two patents that showcase his innovative approach to improving amplifier performance.
Latest Patents
One of his latest patents is titled "Active common mode compensation for improved amplifier performance." This invention provides various techniques to reduce common mode disturbance associated with amplifiers, particularly class D amplifiers. The design includes a power stage that generates first and second PWM signals, along with an integration stage that processes an input differential analog signal to produce an output differential analog signal. An active compensation circuit is also integrated to minimize disturbances at the input nodes caused by the switching of PWM signals between common mode and differential mode.
Another significant patent by Zhang is "Low delay, low power and high linearity class-D modulation loop." This invention features a circuit with multiple integrator circuits arranged in series, which receive an input signal and generate an output signal. A filter processes the feedback signal to enhance the input signal before it reaches the first integrator. This circuit may include a class-D amplifier and/or a delta-sigma modulator, and is designed to amplify analog audio signals for driving audio speakers.
Career Highlights
Yunfu Zhang is currently employed at Synaptics Corporation, where he continues to develop innovative technologies in the field of audio amplification. His work has contributed to advancements in amplifier design and performance.
Collaborations
Zhang has collaborated with notable colleagues, including Dan Shen and Lorenzo Crespi, who have also contributed to the field of amplifier technology.
Conclusion
Yunfu Zhang's contributions to amplifier technology through his patents demonstrate his innovative spirit and commitment to enhancing audio performance. His work at Synaptics Corporation and collaborations with other professionals further highlight his impact in the field.