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:
Nov. 19, 2013
Filed:
Sep. 30, 2009
Sherry X. Wu, Austin, TX (US);
Mustafa H. Koroglu, Austin, TX (US);
Ramin Khoini-poorfard, Austin, TX (US);
Alessandro Piovaccari, Austin, TX (US);
Sherry X. Wu, Austin, TX (US);
Mustafa H. Koroglu, Austin, TX (US);
Ramin Khoini-Poorfard, Austin, TX (US);
Alessandro Piovaccari, Austin, TX (US);
Silicon Laboratories Inc., Austin, TX (US);
Abstract
A shielded differential inductor forms a high quality factor (high-Q) inductor that is configured to attenuate frequency spurs and/or noise from magnetic coupling generated by electrical structures on or off of a substrate as well as interference received by other components from magnetic coupling generated by the inductor. The shielded differential inductor includes a differential inductor and a shield that substantially isolates the electrical field between the inductor and the substrate to reduce substrate current loss. The shield includes sets of finger structures that extend beyond the width of the inductor and a hub and spoke configuration of ground conductors that connect the sets of finger structures to ground.