Traditionally, wireless power is delivered through single-carrier, continuous-wave (CW)
signals. Most research efforts to enhance the efficiency of wireless power transfer systems …

This paper demonstrates a high-efficiency dualband RF power amplifier (PA) for sub-6 GHz
5G carrier aggregation. The dual-band PA is tested with modulated signals generated by a …

Online diagnostic of lithium-ion battery (LIB) cells may have significant impact on chemical
energy storage systems. Electrochemical impedance spectroscopy (EIS) is widely used for …

We provide techniques to generate and characterize precision wideband millimeter-wave
modulated signals. We use predistortion to obtain a significant improvement in signal quality …

As radio frequency (RF) applications occupy larger bandwidths, nonlinear dynamics
become nonnegligible. This work presents a theoretical framework capable of quantifying …

Early damages have become a latent source of catastrophic failure of structures, while the
nonlinearity of systems at the early failure stage is hard to detect. Combining the physical …

Nonlinear distortion (noise) limits many communication systems, demanding a means of
estimating system performance via device nonlinear characteristics. The noise power ratio …

This work investigates wideband active load-pull (WALP) on microwave electron devices
with a standard vector network analyzer (VNA), solely using calibrated frequency-domain …

This article presents the design strategy and extensive noise-to-power ratio (NPR)-focused
characterization of a state-of-the-art Doherty power amplifier (DPA) for satellite applications …

A frequency-domain method is proposed for the broadband measurement of error vector
magnitude (EVM) for vector signal generators (VSGs). The technique is based on frequency …