Location History:
- Shelley, ID (US) (1990)
- Chattanooga, TN (US) (1998)
- Houston, TX (US) (2003)
- Lansdale, PA (US) (2002 - 2005)
- San Diego, CA (US) (2012)
- Seattle, WA (US) (1998 - 2014)
- Doylestown, PA (US) (2005 - 2024)
Company Filing History:
6 out of 97 
5 out of 2,644 
5 out of 832,880 Years Active: 1990-2025
Title: Douglas M. Johnson: Innovator in RF Amplifier Technology
Introduction
Douglas M. Johnson, based in Doylestown, PA, is a prolific inventor with a remarkable portfolio of 18 patents. His work primarily focuses on innovations in radio frequency (RF) amplification technologies, where he has made significant contributions through his inventive methods and apparatus.
Latest Patents
Among his recent breakthroughs is the invention related to a "Power Amplifier Distortion Network." This patent discloses an apparatus that enhances the functionality of power amplifiers by including a distortion network. The network is designed to be electrically coupled to the amplifier's input or output and incorporates a series of channelized resistors, which plays a crucial role in improving the integrity of the amplified radio frequency signal.
Another notable patent is for "Analog Bias Control of RF Amplifiers." This innovation details methods for regulating a DC bias current in an RF amplifier, enabling precise control over performance. It involves a unique configuration where a reference voltage is generated on the amplifier die, which is then utilized by a current controller on a separate die to maintain the desired bias current.
Career Highlights
Douglas M. Johnson's professional journey includes significant stints at Anadigics, Inc., where he has honed his expertise in RF technologies. His contributions have not only advanced the field but have also positioned him as a respected figure in the realm of patentable innovations.
Collaborations
During his career, he has collaborated with notable professionals such as Rajah Vysyaraju and Guillaume Alexandre Blin. These partnerships have likely fostered an environment of knowledge exchange and innovative problem-solving, further enhancing the outcomes of their collective efforts.
Conclusion
Douglas M. Johnson continues to push the boundaries of RF amplification technology with his inventive spirit and dedication to innovation. His impressive array of patents reflects his commitment to solving complex challenges in the field and underscores his status as an influential inventor.