Distortion in power amplifiers, Part VI: the remaining distortionsDouglas Self
work proposes a solution to improve the linearity of class-B amplifiers driven by radio frequency-modulated signals having large peak to average power ... PIERRE MEDREL,AUDREY MARTIN,TIBAULT REVEYRAND,... - 《International Journal of Microwave & Wireless Technologies》 被引量: 1发表: 2014年 Se...
One of the main drawbacks of orthogonal frequency division multiplexing (OFDM) systems is the high peak-to-average power ratio (PAPR) of the transmitted signals, which can cause the introduction of intercarrier interference (ICI) due to the presence of nonlinear power amplifiers (PAs). In this...
We analyze the influence of the effects of the non-linearity due to high power amplifiers in MC-CDMA scheme using BPSK modulation. The results are compared to those obtained with the classical BPSK modulated DS-CDMA scheme. It is shown that without predistortion the total degradation for the up...
s designed to deliver an organic distortion reminiscent of the early to mid-70s UK voiced amplifiers, cranked up to 10. with the tubes worn down just a little, and maybe a little “browning” of the sound with a Variac. The Presence knob helps dial in the perfect amount of highs for ...
MC-CDMA versus DS-CDMA in the Presence of Nonlinear Distortions In this paper we analyze the influence of the non-linearity effects due to high power amplifiers in MC-CDMA scheme. The results are compared to those obtained with the classical DS-CDMA scheme. It is shown that the total degrad...
High efficiency and high linearity microwave power amplifiers based on ultra-high f/sub max/ selective buried sub-collector (SBSC) HBTs. Proc. IEEE MILCOM, 1998; 704-707 Google Scholar Li Y., et al. A novel approach for the two-dimensional simulation of submicron MOSFETs using monotone ...
the second sub-winding generates a gradient Gyin the y-direction; and the third sub-winding generates a gradient Gzin the z-direction. The amplifiers24-26respectively comprise a digital/analog converter (DAC) which is controlled by a sequence controller18for time-accurate generation of gradient ...
Power AmplifiersSignal DistortionStatistical AnalysisTraveling Wave AmplifiersBranching (PhysicsPhase DeviationPulse AmplitudeScattering AmplitudeThe paper examines the multiplicative distortions of complex signals in different types of branching pulsed TWT amplifiers. A statistical criterion of distortions is proposed...
Wireless communication devices transmit message signals which should possess desirable power levels for quality transmission. Power amplifiers are devices in the wireless transmitters which increase the power of signals to the desired levels, but produce nonlinear distortions due to their saturation property...