Results 51 to 60 of about 324,390 (306)

Augmented Twin-Nonlinear Two-Box Behavioral Models for Multicarrier LTE Power Amplifiers

open access: yesThe Scientific World Journal, 2014
A novel class of behavioral models is proposed for LTE-driven Doherty power amplifiers with strong memory effects. The proposed models, labeled augmented twin-nonlinear two-box models, are built by cascading a highly nonlinear memoryless function with a ...
Oualid Hammi
doaj   +1 more source

Manufactured vulnerability: eco-activist tactics in Britain [PDF]

open access: yes, 1999
This article examines the development of tactics in radical environmentalist protests against new roads and other environmental issues in Britain during the 1990s. These tactics depend heavily upon the technical creativity of protesters. Their repertoire
Doherty, BJA
core   +1 more source

Evaluating GaN Doherty architectures for 4G Picocells, WiMax and microwave backhaul links [PDF]

open access: yes, 2014
This paper evaluates the Doherty power amplifier architecture in terms of linearity, efficiency and design solutions. As case study four different prototypes are presented, one for 4G Picocells at 2.1 GHz, one for WiMax applications at 3.5 GHz and two ...
Camarchia, Vittorio   +7 more
core   +1 more source

Spatial metrics in fire ecology: seeking consistency amidst complexity

open access: yesBiological Reviews, EarlyView.
ABSTRACT Technological advances, including remote sensing, have led to a proliferation of metrics used in ecological studies to examine spatial patterns of fire regimes and their ecological effects. Researchers can use many different metrics to analyse spatial variation in both fire events and resulting fire regimes, including fire size, shape ...
Alexander R. Carey   +5 more
wiley   +1 more source

Conceptualising Supply Chain Resilience Within Social Enterprises

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT This research seeks to conceptualise supply chain resilience (SCRes) in a social enterprise (SE) context, focusing on SEs with a social mission to tackle food insecurity and food poverty. Despite the increasingly mature field of SCRes and awareness of the critical role SEs play in tackling social challenges such as food poverty, no studies ...
Alexander James Jones   +3 more
wiley   +1 more source

Design Of A Doherty Power Amplifier For GSM Systems

open access: yesTikrit Journal of Engineering Sciences, 2013
This paper presents the design and analysis of Doherty power amplifier. The Doherty amplifier is used in  a base station for mobile system because of its high efficiency.
Saad Wasmi Osman
doaj  

A Comprehensive Analysis of Bandwidth and Size for Four-Types of Series-Combined Transformer-Based Doherty Output Networks: Theory and Examples

open access: yesIEEE Access
This paper presents theory-driven design guidelines for four types of series-combined transformer (SCT)-based Doherty output matching networks to maximize bandwidth (BW).
Seokchul Lee, John D. Cressler
doaj   +1 more source

A V-Band Doherty Power Amplifier Based on Voltage Combination and Balance Compensation Marchand Balun

open access: yesIEEE Access, 2018
This paper presents a $V$ -band Doherty power amplifier (PA) which is implemented in a standard 65-nm CMOS technology. The voltage combination technique is used to realize the millimeter-wave Doherty PA without the $\lambda $ /4 transmission lines.
Dong Chen   +5 more
doaj   +1 more source

Building a Robust Investigator‐Initiated Platform: The I‐CARE Experience

open access: yesClinical Pharmacology &Therapeutics, EarlyView.
Investigator‐initiated studies that include information collected by patients are rising, but limited data is available on patient and investigator experience in this setting. The I‐CARE cohort included patients with inflammatory bowel disease (IBD) monthly collecting clinical information in 15 countries for up to 6 years.
Julien Kirchgesner   +906 more
wiley   +1 more source

Design of Inner Matching Three-Stage High-Power Doherty Power Amplifier Based on GaN HEMT Model

open access: yesMicromachines
This paper introduces the structure and characteristics of an internal-matching high-power Doherty power amplifier based on GaN HEMT devices with 0.25 μm process platforms from the Nanjing Electronic Devices Institute.
Renyi Li   +3 more
doaj   +1 more source

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