A signal strength indicator circuit that includes a first amplifier
configured to receive a first input signal from a first mixer and a
second input signal from a second mixer;. The circuit also includes a
second amplifier configured to receive a first set of differential inputs
from the first amplifier. The circuit further includes a third amplifier
configured to receive a second set of differential inputs from the second
amplifier stage. Even further, the circuit includes an output port for
emitting an output signal that is a rectified combination of the first
input signal and the second input signal. Also, a method of processing
signals input into a signal strength indicator circuit.