Patent Number: 6,311,048

Title: Intelligent control of receiver linearity based on interference

Abstract: A method and system for intelligently controlling the linearity of an RF receiver by selectively increasing the effective third-order intercept point (IP3) value of a low noise amplifier (LNA)/mixer channel only when needed. A control signal is generated based on mode of operation (receive mode); received signal strength information (RSSI); transmit channel output power, as indicated by a Tx automatic gain control (AGC) signal; and the true received signal strength, as indicated by the pilot signal-to-noise ratio in a CDMA system. The control signal is then used to selectively increase the bias current--and thus linearity--of the LNA/mixer channel, or to select one of several LNAs having differing IP3 values to effectively increase the linearity of the LNA/mixer channel.

Inventors: Loke; Aravind (Irvine, CA)


International Classification: H04B 1/10 (20060101); H04B 001/06 ()

Expiration Date: 10/30/2018