Complexity and numerical stability investigation in concurrent dual-band modeling of ultra-wideband power amplifiers for harmonically related signals

This paper investigates the issues related to numerical stability and complexity of models, which are used to remove the interference in concurrent dual-band transmitters with ultra-wideband power amplifier at harmonic frequencies while providing comparative analysis. The principal component analysis technique is utilized as a solution to maintain numerical stability and reduce complexity in these models. A FPGA based test-bench is used as a measurement setup.