发明名称 |
Differential transmission line with common mode notch filter |
摘要 |
A differential transmission line with a common mode notch filter includes adjacently arranged, repeating differential transmission line pair sections. The sections have lengths that are each equal to half of an electric wavelength of a lowest frequency of a common mode electromagnetic wave to be suppressed during transmission of an electric signal over the differential transmission line. Each section includes a pair of conductors separated from one another by a spacing. The width of each conductor and the spacing between the conductors of each section vary over the length thereof according to a same pattern such that at every point over the length of each section a differential mode impedance of the differential transmission line is identical. A common mode impedance of the differential transmission line changes periodically in accordance with the lengths of the sections. |
申请公布号 |
US9479362(B2) |
申请公布日期 |
2016.10.25 |
申请号 |
US201514802107 |
申请日期 |
2015.07.17 |
申请人 |
Lenovo Enterprise Solutions (Singapore) PTE. LTD. |
发明人 |
Ao Rong Eric;Campbell Alexander Philip;Dignam Donald Richard;Flint Stephen John;Meng Jian |
分类号 |
H04B3/50;H04L25/02 |
主分类号 |
H04B3/50 |
代理机构 |
|
代理人 |
Brown Katherine |
主权项 |
1. A differential transmission line with a common mode notch filter, comprising:
a plurality of adjacently arranged, repeating differential transmission line pair sections, the sections having lengths that are each equal to a fraction of an electric wavelength of a frequency of a common mode electromagnetic wave to be suppressed during transmission of an electric signal over the differential transmission line, each section comprising a pair of conductors separated from one another by a spacing, wherein a width of each conductor and the spacing between the conductors of each section vary over the length thereof according to a pattern such that at every point over the length of each section a differential mode impedance of the differential transmission line is equal, and wherein a common mode impedance of the differential transmission line changes periodically in accordance with the lengths of the sections. |
地址 |
New Tech Park SG |