US Patent Issued to John Howard on May 19 for "Negative differential phase shifter" (Pennsylvania Inventors)

ALEXANDRIA, Va., May 19 -- United States Patent no. 12,633,634, issued on May 19, was assigned to John Howard (Upper Mount Bethel, Pa.).

"Negative differential phase shifter" was invented by John Howard (Upper Mount Bethel, Pa.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A negative differential phase shifter includes a first uncoupled transmission line, wherein the first uncoupled transmission line has a length of Lambda/2 at a center frequency; a first coupled transmission line, wherein the first coupled transmission line is operatively connected to the first uncoupled transmission line; and a second uncoupled transmission line, wherein the second uncoupled transmission line is operatively connected to t...