Patent ID: 9577852
Date: 2017-02-21
CPC Classifications: H02H,H04L

Claim:
1. A differential data transmission system, comprising: a source circuit configured to transmit a differential signal containing data; a load circuit configured to receive the differential signal; and a common-mode suppressor comprising a long coiled differential transmission line configured to transfer the differential signal from the source circuit to the load circuit, which thereby eliminates use of ferromagnetic materials; wherein one or more of a cross section of a first conductive wire and a second conductive wire of the differential transmission line and a distance between the first conductive wire and the second conductive wire of the differential transmission line are configured to result in a differential impedance of the differential transmission line being matched to a system impedance; wherein a length and the coiled arrangement of the differential transmission line are configured to result in the differential transmission line being un-matched for common-mode noise; and wherein the length of the differential transmission line is at least greater than one-tenth of a wavelength of the differential signal being transmitted through the differential transmission line for a predetermined operating frequency range of the differential signal to establish a distributed system model for the common-mode suppressor.