Location History:
- Somerville, NJ (US) (2004)
- Edison, NJ (US) (2007)
Company Filing History:
Years Active: 2004-2007
Title: Sheldon Xu: Innovator in Power Amplifier Technology
Introduction
Sheldon Xu is a prominent inventor based in Edison, NJ (US), known for his contributions to power amplifier technology. With a total of 2 patents, he has made significant advancements in enhancing the efficiency of wireless communication devices.
Latest Patents
One of his latest patents is titled "Multi-mode digital bias control for enhancing power amplifier efficiency." This invention provides a power amplifier that utilizes a multi-mode digital bias control circuit. It incorporates a complementary reference voltage generation circuit and a bias current-control circuit to generate various bias current levels for different output power levels. The power amplifier is designed to operate at a very low quiescent current level, achieving significant improvements in overall efficiency and extending the battery talk time of wireless communication devices. This invention is applicable in devices such as CDMA, WCDMA, EDGE, and WLAN mobile devices.
Another notable patent is the "High directivity multi-band coupled-line coupler for RF power amplifier." This invention discloses a miniature high directivity multi-band coupled-line coupler specifically designed for RF power amplifier module applications. The coupler employs a three-coupled-line structure, achieving directivity requirements for both GSM and DCS/PCS bands while maintaining a compact size.
Career Highlights
Sheldon Xu is currently employed at Anadigics, Inc., where he continues to innovate in the field of power amplifiers. His work focuses on developing technologies that enhance the performance and efficiency of wireless communication systems.
Collaborations
Throughout his career, Sheldon has collaborated with notable colleagues, including Thomas William Arell and Mahendra Singh. These collaborations have contributed to the advancement of technology in the field of RF power amplifiers.
Conclusion
Sheldon Xu's innovative work in power amplifier technology has led to significant advancements in wireless communication devices. His patents reflect a commitment to enhancing efficiency and performance in this critical area of technology.