Patent ID: 7386280
Filing Date: 2008-06-10
Classification: H03F,H03G

Abstract:
1. An integrated circuit radio transceiver, comprising: baseband processor for processing ingoing and outgoing digital communication signals; transmitter front end for processing and transmitting outgoing RF signals based upon the outgoing digital communication signals; receiver front end for receiving ingoing RF signals and for processing the ingoing RF signals to produce the ingoing digital communication signals; a high-pass variable gain amplifier (HPVGA) operably disposed within one of the transmitter and the receiver front ends operable to provide a linear variable gain and a substantially constant high-pass frequency corner that does not vary with changes in gain level settings, the HPVGA including: an amplifier operably disposed to receive an input signal and to produce an amplified output based upon the input signal; an adjustable resistance block operable to adjust resistance based upon a gain control input wherein the adjustable resistance block is operably disposed across input and output terminals of the amplifier whereby adjustments to the resistance determine a gain level of the amplified output; and corner drift compensation block operably disposed to provide corner frequency compensation at the input terminal of the amplifier that is further coupled to receive the input signal from the adjustable resistance block.