Werlatone, Inc.

Gregory J Pflaum

Allen F Podell

Ky-Hien Do

A multilayer coupler may include electromagnetically coupled planar first and second signal conductors that are separated by a gap, extend adjacent each other along a ground plane, and change orientation in a bend. A plate may be positioned along the bend between the ground plane and the signal conductors. The ground plane may have an opening extending along the bend and the plate. A multilayer coupler may include two coupled signal conductors formed in a loop having a four-wire section in which different sections of the two signal conductors overlap in a four-wire section. In a transition region in which the coupler transitions from the four-wire section to a two-wire section, an isolating ground plane may separate the two two-wire sections extending from the four-wire section. A bend in the transition region may include a plate between the two signal conductors and the ground plane.

Multilayer coupler having mode-compensating bend

Multilayer loop coupler having transition region with local ground

A phase-shift network may include a lattice network including a first capacitor coupling a first circuit node to a second circuit node, a second capacitor coupling a third circuit node to a fourth circuit node, and a first inductor coupling the first circuit node to the fourth circuit node. A first coupled section may couple a single-ended input node to the lattice network. A second coupled section may couple the lattice network to a single-ended output node. Each coupled section may include a plurality of conductors that may form a transmission line, such as a coaxial transmission line or a stripline. A high-pass circuit may couple the input node to the first coupled section. A phase difference network may include a signal divider producing two intermediate signals coupled to respective phase-shift networks producing output signals having substantially constant phase difference over a frequency range.

Growing community of inventors

Brewster, NY, United States of America

Gregory J Pflaum