The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 20, 1998
Filed:
Mar. 25, 1997
Applicant:
Inventor:
Lewis Freeth Harpham, Wiltshire, GB;
Assignee:
Madge Networks Limited, Buckinghamshire, GB;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01P / ; H03H / ; H04B / ;
U.S. Cl.
CPC ...
333 / ; 333 12 ; 333 32 ; 333177 ; 333181 ; 379398 ; 379416 ;
Abstract
A termination is provided for a differential transmission line such as unshielded twisted pair (UTP) to isolate a connected device from electromagnetic interference present on the UTP in the form of differential mode and common mode noise. An example of an electromagnetic interference isolator comprises a common mode and a differential mode termination, a common mode choke which exhibits substantially constant impedance over a wide bandwidth and a centre tapped isolation transformer.