Optimizing polyphase-coded FM waveforms within a LINC transmit architecture

Linear amplification using nonlinear components (LINC) is a design approach used to mitigate the nonlinear distortion introduced by the transmitter components, particularly the high-power amplifier. This work investigates using the LINC approach in combination with a new polyphase-coded FM (PCFM) waveform optimization strategy to strike a balance between waveform effectiveness, power efficiency, and spectral containment. A hardware-in-the-loop optimization of LINC-PCFM waveforms is employed to enable joint consideration of the transmitter components and the excitation waveforms.