Measurement technique for characterizing memory effects in RF power amplifiers

JHK Vuolevi, T Rahkonen… - IEEE Transactions on …, 2001 - ieeexplore.ieee.org
Memory effects are defined as changes in the amplitude and phase of distortion components
caused by changes in modulation frequency. These are particularly important in cancelling …

Thermal memory effects modeling and compensation in RF power amplifiers and predistortion linearizers

S Boumaiza, FM Ghannouchi - IEEE Transactions on …, 2003 - ieeexplore.ieee.org
Memory effects, which influence the performance of RF power amplifiers (PAs) and
predistortion-based linearizers, become more significant and critical in designing these …

Effect of baseband impedance on FET intermodulation

J Brinkhoff, AE Parker - IEEE Transactions on Microwave …, 2003 - ieeexplore.ieee.org
The intermodulation performance of an FET in the common-source configuration is
dependent on the impedance presented to its gate and drain terminals, not only at …

Linearization of CMOS cascode power amplifiers through adaptive bias control

S Jin, B Park, K Moon, M Kwon… - IEEE Transactions on …, 2013 - ieeexplore.ieee.org
Highly linear and efficient CMOS cascode power amplifiers (PAs) are developed for handset
applications. The linearity of the PAs is improved using adaptive bias circuits at the gates of …

The effect of baseband impedance termination on the linearity of GaN HEMTs

M Akmal, J Lees, S Bensmida… - The 40th European …, 2010 - ieeexplore.ieee.org
This paper demonstrates the significant effect of baseband impedance termination on the
linearity performance of a 10W GaN HEMT device driven to deliver a peak envelope power …

Analysis on LUT based predistortion method for HPA with memory

B Ai, Z Yang, CY Pan, S Tang… - IEEE transactions on …, 2007 - ieeexplore.ieee.org
Most existing methods for HPA predistortion with memory effects are based on polynomial or
indirect learning structures. Few papers concern about the memory predistortion with LUT …

Control of IMD asymmetry of CMOS power amplifier for broadband operation using wideband signal

S Jin, M Kwon, K Moon, B Park… - IEEE Transactions on …, 2013 - ieeexplore.ieee.org
A fully integrated linear CMOS power amplifier (PA) for the broadband operation is
developed for handset applications. This amplifier can handle a wideband signal. To …

An enhanced modulated waveform measurement system for the robust characterization of microwave devices under modulated excitation

M Akmal, J Lees, S Jiangtao… - 2011 6th European …, 2011 - ieeexplore.ieee.org
This paper presents a refined modulated waveform measurement system for the robust
characterization of nonlinear microwave devices when driven by broadband multi-tone …

A robust modeling and design approach for dynamically loaded and digitally linearized Doherty amplifiers

J Sirois, S Boumaiza, M Helaoui… - IEEE transactions on …, 2005 - ieeexplore.ieee.org
In this paper, an active load-pull-based large-signal modeling approach suitable for
designing and optimizing Doherty amplifiers is proposed. The optimization of the drive …

Power amplifier arrangement and method for memory correction/linearization

ATG Fuller, BJ Morris - US Patent 7,095,278, 2006 - Google Patents
(57) ABSTRACT A device, system, and method are provided for a power amplifier
arrangement. In embodiments of a Vdd modulated power amplifier arrangement, a memory …