Digitally controlled Dual-Input Doherty Power Amplifiers (DIDPAs) are becoming
increasingly popular due to the flexible input signal splitting between the main and auxiliary …

Re-design of microwave passive components for the assumed operating frequencies or
substrate parameters is an important yet a tedious process. It requires simultaneous tuning …

Geometry scaling of microwave circuits is an essential but challenging task. In particular, the
employment of a given passive structure in a different application area often requires re …

This work reports on a wideband (WB) measurement system based on a vector network
analyzer (VNA) topology for multiport large-signal measurements. The setup exploits a …

In this paper, an efficient neural-network-based adaptive DPD design which performs well
under power varying conditions is presented. The DPD design is derived on the basis of the …

A variety of surrogate modeling techniques has been utilized in high-frequency design over
the last two decades. Yet, the curse of dimensionality still poses a serious challenge in …

In complex spectrum coordination scenarios in wireless communications, different frequency
regions may have distinct linearity requirements. Digital predistortion (DPD), a widely used …

We present a methodology based on Bayesian optimization (BO) for the performance
enhancement of a dual-input Doherty power amplifier (DIDPA) operating at 24 GHz under …

In this work, an improved method of metal-organic chemical vapor deposition was utilized to
grow high-quality AlPN/GaN heterostructures. The characteristics of AlPN those are …

In the actual design process of traditional power amplifiers, there is a problem of being
cumbersome and unable to simultaneously meet low power and saturation modes …