Patent ID: 8260143

Claim:
A radio system, comprising: an optoelectronic receiver configured to receive a predistorted signal from an optic communication medium comprising a radio frequency signal having at least one information-bearing electromagnetic wave component, wherein the predistorted signal comprises a predistortion and a signal component that partially cancel each other, to produce a signal having a remaining distortion; an amplifier configured to amplify the signal having the remaining distortion and to generate a power radio frequency signal wherein the remaining distortion substantially compensates for a non-linearity of the amplifier, substantially without frequency translation between the received predistorted signal and the power radio frequency signal, the power radio frequency signal having spectral components at a frequency of between 698 MHz and 50 GHz; an antenna port configured to emit the power radio frequency signal; and a predistorter configured to generate the predistorted signal, comprising a digital processor having at least one look-up table, wherein the signal having the remaining distortion compensates for distortion by the amplifier, to increase an effective spur-free dynamic range of the power radio frequency signal by at least 3 dB by reducing a power of at least one intermodulation signal with respect to the signal component.