Results 181 to 190 of about 5,300,992 (236)

Broadband high power amplifiers for instrumentation

2006 67th ARFTG Conference, 2006
Microwave power amplifiers designed for instrumentation are characterized by a range of properties which sets them apart from other types of applications. Broad bandwidths are generally desired, and so are low noise (both in amplitude and phase), high stability, and low spurious responses.
F.N. Sechi, M. Bujatti
openaire   +1 more source

Broadband High-Efficiency Quasi-Class-J Power Amplifier Based on Nonlinear Output Capacitance Effect

IEEE Transactions on Circuits and Systems - II - Express Briefs, 2022
In this brief, a broadband high-efficiency quasi-Class-J power amplifier (PA) based on nonlinear output capacitance effect is proposed. With the influence of the voltage across between drain and source ( $\text{v}_{\mathrm{ DS}}$ ) at the over-driven ...
W. Feng, Wen-Bin Wu, Xin-Yu Zhou, W. Che, Yongrong Shi   +4 more
semanticscholar   +1 more source

A Broadband Hybrid Continuous Power Amplifier

2018 IEEE International Conference on Computational Electromagnetics (ICCEM), 2018
A highly efficient and broadband 10W GaN HEMT power amplifier (PA) is presented, which employs the hybrid PA mode, transferring between continuous Class-F and continuous inverse Class-F. A GaN PAis designed and realized based on this mode-transferring operation using the multisection matching transformers.
Chun Ni, Changqing Liu, Mingsheng Chen, Liang Zhang, Zhongxiang Zhang, Xianliang Wu   +5 more
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A broadband power-reconfigurable distributed amplifier

2012 IEEE/MTT-S International Microwave Symposium Digest, 2012
A broadband power-reconfigurable distributed amplifier (DA) is presented, where a triple-stack FET structure is employed as a power-adjustable gain cell. The output power is reconfigured by employing double gate-bias control scheme to the bottom and middle FET's, which maintains the efficiency under power back-off without degrading input and output ...
null Jihoon Kim, null Youngmin Kim, null Sangho Lee, Jinho Jeong, null Youngwoo Kwon   +4 more
openaire   +1 more source

Miniaturized Broadband Doherty Power Amplifier Using Simplified Output Matching Topology

IEEE Transactions on Circuits and Systems Part 1: Regular Papers, 2022
This paper presents a Doherty power amplifier (DPA) with reduced size and wide bandwidth by using a simplified output matching topology. In broadband DPA designs, post-matching networks are usually added after the combing node, which usually occupy large
Hang Chen, Jin-Xu Xu, Xiu-Yin Zhang
semanticscholar   +1 more source

Design of powerful broadband transistorized amplifiers

2001 Siberian Russian Student Workshop on Electron Devices and Materials. Proceedings 2nd Annual (IEEE Cat. No.01EX469), 2002
The circumscribed mathematical model allows to design powerful broadband transistorized amplifiers (PBTA) by criterion of a minimum of technological losses of manufacture K6, and in case of using operating of monitoring cascades allows to allocate the most significant casual parameters of elements which, for example, can be chosen as, set up with the ...
A.V. Kolotvin, A.V. Pisanko, V.V. Maneev
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GaN broadband Power Amplifiers for terrestrial and space transmitters

2012 19th International Conference on Microwaves, Radar & Wireless Communications, 2012
This contribution reports several Power Amplifiers (PAs) designed using both GaN-on-Si and GaN-on-SiC technologies provided by Selex-SI foundry. The former is still under development while the other one is more stable and under space qualification procedure.
GIOFRE', ROCCO, COLANTONIO, PAOLO, GIANNINI, FRANCO   +2 more
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A Broadband Outphasing GaN Power Amplifier Based on Reconfigurable Output Combiner

IEEE transactions on microwave theory and techniques
This article introduces a broadband outphasing power amplifier (OPA) design in virtue of a reconfigurable output combiner. Two T-type matching structures loaded with varactors are applied to replace the transmission lines in the conventional architecture.
Weiwei Wang, Shiping Li, Shi-Chang Chen, Jia-Lin Cai, Yuan-Chun Li, Xin-Yue Zhou, G. Crupi, Gaofeng Wang, Q. Xue   +8 more
semanticscholar   +1 more source

A Silicon-Based Low-Power Broadband Transimpedance Amplifier

IEEE Transactions on Circuits and Systems I: Regular Papers, 2018
The analysis, design, and implementation of a 50-Gb/s transimpedance amplifier (TIA) in a 0.13- $\mu \text{m}$ SiGe BiCMOS process are presented. The proposed TIA, designed for use in a single-channel optical communication network, is comprised of three stages including: 1) a shunt-peaked, shunt-series feedback stage incorporating a transformer ...
Alireza Karimi-Bidhendi, Hossein Mohammadnezhad, Michael M. Green, Payam Heydari   +3 more
openaire   +1 more source

Broadband GaAs HBT Doherty Power Amplifier for 5G NR Mobile Handset

IEEE Transactions on Circuits and Systems - II - Express Briefs
This brief proposes a broadband flat-gain Doherty power amplifier (DPA) for 5G new radio (NR) mobile handsets. It is implemented by the heterogeneous integration of GaAs HBT process for PA die and 6-layer laminate for output network.
Shao-Fei Bo, Jun-Hui Ou, Yan-Jun Peng, K. Xuan, Jin-Xu Xu, Xiu-Yin Zhang   +5 more
semanticscholar   +1 more source