Methods and systems for process and temperature compensation in a transimpedance amplifier using a dual replica and configurable impedances is disclosed and may include a transimpedance amplifier (TIA) circuit comprising a first TIA, a second TIA, a third TIA, and a control loop. The first TIA comprises a fixed feedback resistance and the second and third TIAs each comprise a configurable feedback impedance. The system may comprise a gain stage with inputs coupled to outputs of the first and second TIAs and with an output coupled to the configurable feedback impedance of the second and third TIAs. The circuit may be operable to configure a gain level of the first TIA based on the fixed feedback resistance and a reference current applied at an input to the first TIA, and configure a gain level of the second and third TIAs based on a control voltage generated by the gain stage.

Methods and systems for process and temperature compensation in a transimpedance amplifier using a dual replica and servo loop is disclosed and may include a transimpedance amplifier (TIA) circuit comprising a first TIA, a second TIA, a third TIA, and a control loop. The first TIA comprises a fixed feedback resistance and the second and third TIAs each comprise a configurable feedback impedance. The control loop comprises a gain stage with inputs coupled to outputs of the first and second TIAs and with an output coupled to the configurable feedback impedance of the second and third TIAs. The circuit may be operable to configure a gain level of the first TIA based on the fixed feedback resistance and a reference current applied at an input to the first TIA, and configure a gain level of the second and third TIAs based on a control voltage generated by the gain stage.

Power amplification system for radio frequency communications, comprising a input port of an input radio frequency signal, an output port of an output radio frequency signal; a digital predistortion unit operatively interposed between the input port and the output port and quadrature modulation correction means operatively interposed between the digital predistortion unit and between at least one of the input port and the output port.

Power amplification system for radio frequency communications, comprising a input port of an input radio frequency signal, an output port of an output radio frequency signal; a digital predistortion unit operatively interposed between the input port and the output port and quadrature modulation correction means operatively interposed between the digital predistortion unit and between at least one of the input port and the output port.