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:
Apr. 03, 2007
Filed:
Oct. 08, 2003
Andrew W. Dornbusch, Austin, TX (US);
Andrew W. Dornbusch, Austin, TX (US);
Silicon Laboratories Inc., Austin, TX (US);
Abstract
An antenna detection and diagnostic system and associated method, including current and voltage detection circuits, are disclosed for detecting antenna failure mechanisms for integrated radio receivers. Integrated current limit detection circuitry is disclosed that determines current levels drawn by a remotely mounted antenna and generates a drive signal that controls a current limiting pass transistor such that current flow through the transistor is reduced when the detected current level drawn antenna rises above a current limit level. Integrated current and voltage detection circuitry is disclosed that detects current and voltage levels drawn by a remotely mounted antenna and determines under-current, over-current, and over-voltage antenna error conditions. At least one antenna error output pin for the integrated radio receiver is then used provide an output signal indicative of antenna error conditions.