Patent ID: 7668514

Claim:
An integrated circuit radio transceiver, comprising: a baseband processor for processing ingoing and outgoing digital communication signals; a transmitter front end operable to transmit outgoing RF signals based upon the outgoing digital communication signals; a receiver front end operable to produce the ingoing digital communication signals based upon received ingoing RF signals, the receiver front end including: a first frequency in-phase receive processing block; a first frequency quadrature phase receive processing block; a second frequency in-phase receive processing block; a second frequency quadrature phase receive processing block; and wherein each of the in-phase and quadrature phase receive processing blocks are disposed in parallel between at least one low noise amplifier that produces the ingoing RF signals and the processor, each of the in-phase and quadrature phase receive processing blocks further including: a low pass filter; high pass variable gain amplifiers disposed substantially in series with the low pass filter defining a signal path wherein at least one is disposed upstream of the low pass filter; and at least three received signal strength indicator blocks for producing a corresponding received analog signal strength indication from receive signal path nodes in the signal path wherein: at least two of the receive signal path nodes are disposed on opposite sides of at least one of the high pass variable gain amplifiers disposed upstream of the low pass filter; and at least two of the received signal strength indicator blocks, that are operably coupled to the at least two of the receive signal path nodes, include circuitry for removing a DC offset.