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:
May. 05, 2009
Filed:
Jan. 24, 2007
Herbert Kebinger, Mettenheim Hart, DE;
Wolfgang Klein, Zorneding, DE;
Herbert Kebinger, Mettenheim Hart, DE;
Wolfgang Klein, Zorneding, DE;
Infineon Technologies AG, Munich, DE;
Abstract
An electrical filter has at least four terminals, two inductances and two capacitors. The first inductance is connected between the first terminal and the second terminal, and a second inductance is connected between the third terminal and the fourth terminal. The first capacitance is connected between the first terminal and a reference potential, and the second capacitance is connected between the third terminal and the reference potential. The first inductance and the second inductance form a transformer having a coupling coefficient of a magnitude such that the filter acts as a low-pass filter for differential signals and common mode signals, a cutoff frequency for differential signals being higher than a cutoff frequency for common mode signals.