Differential transmission line having quarter wavelength differential coupler to reduce common mode noise
US9888560B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2015 |
| Grant date | Feb 6, 2018 |
| Priority date | — |
| Expiry date | Aug 19, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K1/0245
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A differential transmission line includes a positive conductor on which a positive complementary component of a differential signal is transmitted, and a negative conductor parallel to the positive conductor on which a negative complementary component of the differential signal is transmitted. A quarter wavelength differential coupler is inserted along a length of the positive and negative conductors. The quarter wavelength differential coupler has a length corresponding to a frequency of common mode noise on the positive and negative conductors. The quarter wavelength differential coupler reduces the common mode noise at the frequency as the differential signal passes through the quarter wavelength differential coupler.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.