Haiying Cao

TL;DR: The results show that the generalized memory polynomial behavioral model has the best tradeoff for accuracy versus complexity for both PAs, and can obtain high performance at half of the computational cost of all other models analyzed.

TL;DR: In this article, the design, implementation, and experimental results of a high-efficiency wideband GaN-HEMT power amplifier are presented, where a method based on source-pull/load-pull simulation has been used to find optimum source and load impedances across the bandwidth and then used with a systematic approach to design wideband matching networks.

TL;DR: In this paper, a dual-input nonlinear model based on a real-valued Volterra series is proposed for compensation of the nonlinear frequency-dependent I/Q imbalance.

TL;DR: In this article, a detailed linearization procedure for dynamic load modulation (DLM) transmitter architectures is proposed for the first time, which is based on a regular memory DPD in combination with an efficiency-optimized static one-to-two mapping inverse model, which constructs the predistorted input signals to the DLM transmitter.

TL;DR: In this article, a varactor-based dynamic load modulation (DLM) technique for wideband cellular applications is demonstrated, which incorporates harmonically tuned power amplifier (PA) concepts and tunable matching techniques in an integrated design.