Jenshan Lin

Title: Jenshan Lin: Innovator in RF Circuit Design

Introduction

Jenshan Lin is a prominent inventor based in Pine Brook, NJ (US), known for his contributions to radio frequency (RF) circuit design. With a total of 6 patents to his name, Lin has made significant advancements in the field of telecommunications.

Latest Patents

One of Lin's latest patents is an active balun circuit designed for single-ended to differential RF signal conversion with enhanced common-mode rejection. This innovative circuit effectively suppresses common mode signals while achieving phase and amplitude balance without the need for complex tuning or compensation methods. The circuit features a single-ended input and balanced output, maintaining a phase and amplitude balance error of less than 2° and 1.2 dB, respectively, measured from 1.5 GHz to 1.8 GHz at a 5V supply. Even when the supply voltage is reduced to 1.5V, the circuit retains a phase and amplitude balance error within 5° and 2 dB. The design incorporates an output network that functions as an impedance matching network for differential mode signals, ensuring that common mode signals are effectively suppressed while achieving a 180-degree phase balance at the output. Additionally, the circuit boasts high linearity with P1 dB at 5 dBm and IIP3 at 16.6 dBm, along with low residual phase noise, making it suitable for use as an active balun or buffer amplifier in base station receiver applications.

Another notable patent by Lin is a method and apparatus for enhancing the efficiency of transmitter circuits in mobile radio units through selectable switching of power amplifiers. This circuit increases the efficiency of RF mobile telephone units by activating the power amplifier when the signal strength between the base station and the mobile unit falls below a predetermined level. Conversely, when the signal strength exceeds this level, the power amplifier is deactivated, conserving battery power for the mobile unit.

Career Highlights

Jenshan Lin is currently employed at Lucent Technologies Inc., where he continues to innovate and develop cutting-edge technologies in the field of telecommunications. His work has significantly impacted the efficiency and performance of mobile communication systems.

Collaborations

Lin has collaborated with notable colleagues, including Young-Kai Chen and James Robert Lothian, contributing to various projects and advancements in RF circuit design.

Conclusion