Patent ID: 9088063
Filing Date: 2015-07-21
Classification: H01P

Abstract:
1. A hybrid coupler comprising: first, second, third, and fourth ports; and first, second, third, fourth, fifth, sixth, seventh, and eighth transmission lines including respective first, second, third, fourth, fifth, sixth, seventh, and eighth signal conductors, and respective first, second, third, fourth, fifth, sixth, seventh, and eighth signal-return conductors closely inductively coupled to the respective signal conductors, each of the signal conductors and signal-return conductors having respective first and second ends; wherein the first, second, third, and fourth transmission lines are connected together to form a loop with the first, second, and third transmission lines in series, wherein wherein the fifth, sixth, seventh, and eighth transmission lines respectively connect the loop to the first, second, third, and fourth ports by: wherein the second and fourth junctions are connected to ground, the sixth and eighth junctions are not directly connected to ground, the first signal-return conductor is connected to ground at a first position disposed between and spaced from the first and second ends of the first signal-return conductor, and the third signal-return conductor is connected to ground at a second position disposed between and spaced from the first and second ends of the third signal-return conductor.