How not to rely on Moore's Law alone: low-complexity envelope-tracking amplifiers
GT Watkins, K Mimis - IEEE Microwave Magazine, 2018 - ieeexplore.ieee.org
Achieving fast wireless access speeds in an already restricted bandwidth (as the frequency
spectrum is a finite resource) necessitates highly spectrally efficient communications …
spectrum is a finite resource) necessitates highly spectrally efficient communications …
Design of highly efficient load modulation transmitter for wideband cellular applications
In this paper, the high potential of varactor-based dynamic load modulation (DLM)
techniques for wideband cellular applications is demonstrated. A systematic design …
techniques for wideband cellular applications is demonstrated. A systematic design …
Linearization of efficiency-optimized dynamic load modulation transmitter architectures
In this paper, a detailed linearization procedure for dynamic load modulation (DLM)
transmitter architectures is proposed for the first time. Compared with the conventional single …
transmitter architectures is proposed for the first time. Compared with the conventional single …
Tunable impedance-matching filters
JA Estrada, S Johannes, D Psychogiou… - IEEE Microwave and …, 2021 - ieeexplore.ieee.org
In this letter, we present a general design method for tunable matching networks that have a
prescribed filter characteristic over a range of complex port impedances. The approach …
prescribed filter characteristic over a range of complex port impedances. The approach …
Wide-band switching-mode power amplifier using varactor-based reconfigurable output matching network
F Moloudi, O Eslamipour - AEU-International Journal of Electronics and …, 2021 - Elsevier
Abstract Switch Mode Power Amplifiers (SMPAs) have attracted significant attention due to
their high efficiency, thus, designing a reconfigurable SMPA, which can operate efficiently in …
their high efficiency, thus, designing a reconfigurable SMPA, which can operate efficiently in …
Digital predistortion for high efficiency power amplifier architectures using a dual-input modeling approach
In this paper, a novel model is proposed for dual-input high efficiency power amplifier (PA)
architectures, such as envelope tracking (ET) and varactor-based dynamic load modulation …
architectures, such as envelope tracking (ET) and varactor-based dynamic load modulation …
A Reduced-Complexity Load-Modulated MIMO Transmitter Readily Scalable in 5G Massive MIMO Transmitters
This brief presents the design of a four-branch reduced-complexity load-modulated MIMO
transmitter. The transmitter is designed to operate at 3 GHz. The transmitter can generate 64 …
transmitter. The transmitter is designed to operate at 3 GHz. The transmitter can generate 64 …
Design of a low-cost low-profile energy efficient 64-QAM load modulator
The design of a 64-QAM I/Q modulator based on load modulation is presented. The
modulator is designed to operate at 3 GHz. In any standard M-QAM modulation, the RF …
modulator is designed to operate at 3 GHz. In any standard M-QAM modulation, the RF …
Analysis and characterization of a load modulated balanced amplifier for base-station applications
R Quaglia, J Powell, D Shepphard… - 2018 11th German …, 2018 - ieeexplore.ieee.org
This paper discusses the analysis and the experimental results of a load modulated
balanced amplifier designed for base-station applications. The hardware, employing …
balanced amplifier designed for base-station applications. The hardware, employing …
Time alignment in a dynamic load modulation transmitter architecture
A time alignment algorithm is proposed for a dynamic load modulation transmitter
architecture. The effect of time mismatch between the RF input and baseband control signal …
architecture. The effect of time mismatch between the RF input and baseband control signal …