Patent ID: 8571507

Claim:
A signal processing device, comprising: a device package; processing circuitry, which is packaged in the device package and is operative to receive one or more Radio Frequency (RF) input signals from one or more antenna elements via one or more pre-amplifiers that are separate from the signal processing device, and to process the RF input signals so as to produce an RF output signal; and biasing circuitry, which is packaged in the device package and is operative to produce one or more constant-current biasing signals for biasing the pre-amplifiers with a predefined, constant current, wherein the processing circuitry is operative to receive the RF input signals from the pre-amplifiers over RF input conductors, and wherein the constant-current biasing circuitry is operative to provide at least one of the biasing signals to the pre-amplifiers over at least one of the RF input conductors.