US Patent Issued to Texas Instruments on June 17 for "Eye expander for PAM4 signal linearization" (California, Texas Inventors)

ALEXANDRIA, Va., June 19 -- United States Patent no. 12,334,932, issued on June 17, was assigned to Texas Instruments Inc. (Dallas).

"Eye expander for PAM4 signal linearization" was invented by Shita Guo (Dallas) and Amit S. Rane (Santa Clara, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An eye expander that increases the transmitter linearity of Pulse-Amplitude Modulation 4-Level (PAM4) signals having an inner eye and two outer eyes. In embodiments, the eye expander includes a semi-linear gain stage that increases the eye height of the outer eyes. In some of those embodiments, the semi-linear gain stage includes a semi-linear gain input transistor having a base or gate coupled to an input terminal ...