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:
Jun. 14, 2011
Filed:
Feb. 27, 2007
Troy Stockstad, Chandler, AZ (US);
Alexander Wayne Hietala, Phoenix, AZ (US);
Fares Jaoude, Tucson, AZ (US);
Roman Zbigniew Arkiszewski, Oak Ridge, NC (US);
Troy Stockstad, Chandler, AZ (US);
Alexander Wayne Hietala, Phoenix, AZ (US);
Fares Jaoude, Tucson, AZ (US);
Roman Zbigniew Arkiszewski, Oak Ridge, NC (US);
RF Micro Devices, Inc., Greensboro, NC (US);
Abstract
A system and method for detecting and correcting over-current and/or over-voltage conditions in power amplifier circuitry in a transmit chain of a mobile terminal are provided. In general, over-current detection and correction circuitry combines a current detection signal indicative of a current provided to or drained by the power amplifier circuitry during ramp-up for a transmit burst and a substantially inverse current ramping profile to provide a first constant value. The first constant value is compared to a current threshold or limit value to determine whether an over-current condition exists. If an over-current condition exists, the over-current detection and correction circuitry operates to reduce the output power of the power amplifier circuitry during ramp-up for the transmit burst to correct for the over-current condition. In a similar manner, over-voltage detection circuitry operates to detect and correct over-voltage conditions during ramp-up for the transmit burst.