ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,438,249, issued on Oct. 7, was assigned to Analog Devices International UnLtd. Co. (Limerick, Ireland).
"Dyadic radial coupler" was invented by Ahmed Sakr (Cairo) and Islam A. Eshrah (Cairo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A two-port dyadic radial coupler for RF communications between PCB layers is disclosed. The coupler includes an input port, an impedance matching transformer, a coaxial conductor, and at least one coupled port. The input or coupled port has an at least partially annular conducting strip axially aligned with the coaxial conductor, causing radial coupling excitation by an RF signal to couple the signal between the input por...