Patent ID: 9627738
Date: 2017-04-18
CPC Classifications: H01F,H01P,H03H,Y10T

Claim:
1. A multilayer transmission line transformer, comprising: a first set of two conductors having no intervening conductor there between, the first set of two conductors forming a first clockwise inward spiral, the first set of two conductors forming a first transformer; and a second set of two conductors having no intervening conductor there between, the second set of two conductors forming a second counterclockwise inward spiral, the second set of two conductors forming a second transformer, the second counterclockwise inward spiral being substantially coaxial with the first clockwise inward spiral; and the first and second inward spirals having no intervening conductor there between so that the combination of the first clockwise inward spirals and the second counterclockwise inward spirals being substantially coaxial cause a substantial cancellation of common mode currents in the first and second sets of conductors during operation without substantially suppressing differential mode currents.