This inventor holds 7 USPTO granted patents and 1 EPO patent. Top assignees: Motorola Corporation, Andrew Corporation, Motorola Solutions, Inc.. Active years: 1998-2013.
Location History:
- Streamwood, IL (US) (1998)
- McHenry, IL (US) (1998 - 2013)
Company Filing History:
5 out of 20,290 
1 out of 726 
1 out of 2,291 
Years Active: 1998-2013
Title: Loren Francis Root: Innovator in Radio Frequency Amplification
Introduction
Loren Francis Root is a notable inventor based in McHenry, IL (US). He has made significant contributions to the field of radio frequency (RF) amplification, holding a total of 7 patents. His work focuses on enhancing the efficiency and performance of RF signal amplification.
Latest Patents
Among his latest patents is a method and apparatus for amplifying a radio frequency signal. This RF amplifier structure provides highly efficient signal amplification across a wide bandwidth. It is designed for both inverting and non-inverting Doherty configurations. The design employs matching impedance transform circuits, which include a low pass multiple section inductance-capacitance circuit. This circuit facilitates impedance matching between the output of an amplifier device and a power combiner. The output matching impedance transform circuit operates with approximately an odd multiple of 90 electrical degrees over the frequency range of the RF amplifier structure. Additionally, adjustable phase delay circuits route the amplified RF signal to the power combiner, allowing for controllable adjustments based on the frequency of the RF input signal.
Another significant patent is for a high efficiency amplifier. This amplifier includes a main amplifier circuit and at least one auxiliary amplifier circuit. Portions of the RF signal to be amplified are delivered to both the main and auxiliary amplifiers. The auxiliary amplifier circuit can operate in conjunction with the main amplifier circuit, depending on the level of the RF signal. A hybrid coupler circuit combines the output signals from both amplifier circuits at a coupler first output port, while the second output port is terminated with either an electrical short or an electrical open circuit.
Career Highlights
Loren has worked with prominent companies such as Motorola Corporation and Motorola Solutions, Inc. His experience in these organizations has contributed to his expertise in RF technology and innovation.
Collaborations
Throughout his career, Loren has collaborated with talented individuals, including Kevin J McDunn and Maninder Singh Sehmbey. These collaborations have likely enriched his work and led to advancements in RF amplification technologies.
Conclusion
Loren Francis Root is a distinguished inventor whose contributions to radio frequency amplification have made a significant impact in the field. His innovative patents and career experiences reflect his dedication to advancing technology in this area.