Results 21 to 30 of about 4,686 (214)
IET Circuits, Devices &Systems, Volume 2023, Issue 1, 2023., 2023 A power amplifier design operating at 28 GHz for communication applications is presented in this paper. Analog predistorted technique is used to improve the linearity using a cold mode MOSFET linearizer. The paper reports +19.8 dBm of peak power at the output and power‐added efficiency (PAE) of 17% is attained by the designed circuit.
N. A. Quadir +5 more
wiley +1 more source
Digital Predistortion in High Throughput Satellites: Architectures and Performance
IEEE Access, 2021 The future of satellites lies in the deployment of high throughput satellites (HTS). Moreover, HTS will also play an important role in the up coming 5G mobile networks where HTS will provide services like disaster relief, remote automation, maritime ...
Ovais Bin Usman, Andreas Knopp
doaj +1 more source
A crosscorrelation predistorter using memory polynomials [PDF]
, 2004 Amplification of signals with fluctuating envelopes inevitably leads to distortion because of nonlinear behavior of the power amplifier (PA). Digital predistortion can counteract these nonlinear effects.
Kokkeler, Andre B.J.
core +3 more sources
International Journal of RF and Microwave Computer-Aided Engineering, Volume 2023, Issue 1, 2023., 2023 In this brief, a novel filtering impedance transformer with good selectivity and high termination impedance is proposed, of which close‐formed design equations are derived and effectively verified. Then, a dual‐band dual‐output filtering power amplifier (PA) operating at 2.4‐2.6 GHz and 3.4‐3.6 GHz is designed based on the proposed filtering impedance ...
Shuchen Zhen +5 more
wiley +1 more source
Mobile Phone Power Amplifier Linearity and Efficiency Enhancement Using Digital Predistortion [PDF]
, 2003 The new generation mobile communication systems using spectrum efficient linear modulation schemes (QPSK,8PSK,QAM)need linear power amplifiers in the transmission path to have good ACPR and EVM values.
Ceylan, N. +3 more
core +1 more source
International Journal of RF and Microwave Computer-Aided Engineering, Volume 2023, Issue 1, 2023., 2023 The transmitting signal of wireless communication system is impaired by the nonlinearity of RF power amplifier (PA) which leads to signal distortion and spectrum spillover, by which the signal transmission quality is affected. Digital predistortion (DPD) is an efficient and economical way to correct the nonlinear effects of power amplifiers.
Wenxian Song +3 more
wiley +1 more source
Digital Predistortion Utilizing Over-the-Air Feedback for Phased Arrays
IEEE Access, 2021 In this paper, an efficient digital predistortion (DPD) architecture utilizing over-the-air (OTA) feedback is presented to linearize phased array transmitters.
Ying Liu +5 more
doaj +1 more source
Efficient Digital Predistortion Using Sparse Neural Network
IEEE Access, 2020 This paper proposes an efficient neural-network-based digital predistortion (DPD), named as envelope time-delay neural network (ETDNN) DPD. The method complies with the physical characteristics of radio-frequency (RF) power amplifiers (PAs) and uses a ...
Masaaki Tanio +2 more
doaj +1 more source
Increasing the talk-time of mobile radios with efficient linear transmitter architectures [PDF]
, 2000 In order to meet the linearity specification of standards such as GSM EDGE and TETRA the power amplifier (PA) linearisation methods in common usage today result in low DC to RF efficiency (e.g. Cartesian loop and adaptive predistortion).
Beach, MA +3 more
core +2 more sources
53 GBd PAM-4 DAC-less low-power (1.5 pJ/b) silicon integrated transmitter [PDF]
, 2019 C
Bauwelinck, Johan +10 more
core +2 more sources