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:
Feb. 17, 2015
Filed:
Apr. 17, 2013
Qiang LI, Gilbert, AZ (US);
Olin L. Hartin, Phoenix, AZ (US);
Sateh Jalaleddine, Phoenix, AZ (US);
Radu M. Secareanu, Phoenix, AZ (US);
Michael J. Zunino, Tempe, AZ (US);
Qiang Li, Gilbert, AZ (US);
Olin L. Hartin, Phoenix, AZ (US);
Sateh Jalaleddine, Phoenix, AZ (US);
Radu M. Secareanu, Phoenix, AZ (US);
Michael J. Zunino, Tempe, AZ (US);
Freescale Semiconductor, Inc., Austin, TX (US);
Abstract
An electronic apparatus includes a semiconductor substrate, a circuit block disposed in and supported by the semiconductor substrate and comprising an inductor, and a discontinuous noise isolation guard ring surrounding the circuit block. The discontinuous noise isolation guard ring includes a metal ring supported by the semiconductor substrate and a ring-shaped region disposed in the semiconductor substrate, having a dopant concentration level, and electrically coupled to the metal ring, to inhibit noise in the semiconductor substrate from reaching the circuit. The metal ring has a first gap and the ring-shaped region has a second gap.