Patent ID: 7092674

Claim:
A wireless communication device comprises: a receiver section that includes: a low noise amplifier operably coupled to amplify an inbound radio frequency (RF) signal to produce an amplified RF signal; receiver mixing module operably coupled to mix the amplified RF signal with a receiver local oscillation to produce an inbound low intermediate frequency (IF) signal; receiver filter module operably coupled to filter the inbound low IF signal to produce a filtered inbound low IF signal; and an analog to digital converter operably coupled to convert the filtered inbound low IF signal to produce a digital inbound low IF signal; a transmitter section that includes: a digital to analog converter operably coupled to convert an outbound digital low IF signal into an outbound analog low IF signal; transmitter mixing module operably coupled to mix the outbound analog low IF signal with a transmitter local oscillation to produce an up-converted signal; transmitter filter module operably coupled to filter the up-converted signal to produce a filtered up-converted signal; and a power amplifier operably coupled to amplify the filtered up-converted signal to produce a outbound RF signal, wherein at least one of the low noise amplifier, the receiver mixer module, the receiver filter, the analog to digital converter, the digital to analog converter, the transmitter mixing module, the transmitter filter module, and the power amplifier includes a bandgap reference current source that includes: bandgap current mode module that provides a bandgap reference current and a voltage representation of the bandgap reference current; and an adjustable current source module operably coupled to produce a process independent bandgap current and a voltage representation of the process independent bandgap current, wherein the adjustable current source module produces the process independent bandgap current based on a difference between the voltage representation of the bandgap reference current and the voltage representation of the process independent bandgap current.