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 …
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 …
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 …
dependent on the impedance presented to its gate and drain terminals, not only at …
Linearization of CMOS cascode power amplifiers through adaptive bias control
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 …
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 …
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 …
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
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 …
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 …
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 …
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 …
arrangement. In embodiments of a Vdd modulated power amplifier arrangement, a memory …