Results 41 to 50 of about 5,033,045 (217)

Seasonal Dynamics of Soil Multitrophic Biodiversity, Co‐Occurrence Network and Assembly Mechanisms Under Typical Vegetation Restoration Patterns in Karst Region

Land Degradation &Development, EarlyView.
ABSTRACT Previous studies often overlooked the dynamic effects of karst vegetation restoration on soil multi‐trophic biodiversity and the underlying community‐assembly mechanisms. To fill this gap, we performed a seasonal comparative analysis of soil biodiversity, co‐occurrence network architecture, and assembly processes across three representative ...
Xiang Zhang, Yingliang Liu, Yao Kai, Lihong Lu, Aoli Zhang, Zhaoxia Zeng, Fuping Zeng, Xunyang He, Hao Zhang   +8 more
wiley   +1 more source

Broadband Doherty Power Amplifier With Transferable Continuous Mode

IEEE Access, 2020
In this paper, in-band continuous mode transferring (CMT) method is presented for designing broadband Doherty power amplifier (DPA). Specifically, transferable continuous mode, transferring between class-J continuum to class-F-1 continuum, is introduced ...
Decheng Gan, Weimin Shi, Songbai He, Yong Gao, Gideon Naah   +4 more
doaj   +1 more source

New Compact Load Network for Doherty Power Amplifiers Based on L-Section Matching Network of the Carrier Amplifier and Post-Matching Network

IEEE Access, 2023
This paper presents a new compact load network for Doherty power amplifiers (DPAs) with only two matching networks, such as an output matching network of the carrier amplifier, and the post-matching network (PMN), even in the presence of parasitic ...
Yifei Chen, Woojin Choi, Jaekyung Shin, Hyeongjin Jeon, Sooncheol Bae, Soohyun Bin, Sunwoo Nam, Young Chan Choi, Hyunuk Kang, Kang-Yoon Lee, Keum Cheol Hwang, Youngoo Yang   +11 more
doaj   +1 more source

A METHOD FOR DESIGNING BROADBAND DOHERTY POWER AMPLIFIERS [PDF]

Progress In Electromagnetics Research, 2014
In this contribution, a design approach for the realization of broadband Doherty Power Ampliflers (DPAs) is proposed and demonstrated. The methodology is based on the exploitation of the wideband response of 2-sections branch-line couplers both as input splitter and output combiner of the DPA.
PIAZZON, LUCA, GIOFRE', ROCCO, COLANTONIO, PAOLO, GIANNINI, FRANCO   +3 more
openaire   +2 more sources

Crisis Preparation, Capacity Building, and Community Resilience: Lessons From Maui

Nonprofit Management and Leadership, EarlyView.
ABSTRACT The 2023 Maui wildfires provide a unique context to explore the impact of nonprofit crisis networks taking a proactive role in community crisis response, leveraging resources, expertise, and networks. The Hawaiʻi Community Foundation (HCF) has been a key player in Maui's local response, providing critical support, mobilizing volunteers, and ...
Lauren Azevedo, Kaila Witkowski, Ratna Dougherty, Christa Remington   +3 more
wiley   +1 more source

A 3.5 GHz High Efficiency Doherty GaN Power Amplifier for 5G Applications [PDF]

EPJ Web of Conferences
In this paper, 3.5 GHz power amplifier (PA) for 5G-NR n78 band base stations has been designed and co-simulated. The PA is realized with the Doherty method using Wolfspeed CGHV35120F GaN HEMT on an FR4 substrate.
Elmouftih Abderrahim, El bakkali Moustapha, Touhami Naima Amar   +2 more
doaj   +1 more source

Equity‐Calibrated Technology Forecasting for Sustainable Development: A Portable ADOPT Framework Integrating Bayesian‐Ising Diagnostics

Sustainable Development, EarlyView.
ABSTRACT Climate‐smart agriculture (CSA) is widely promoted to enhance resilience and productivity among smallholder farmers, yet its diffusion remains uneven due to structural barriers and heterogeneous adoption contexts. Existing forecasting tools, such as the Adoption and Diffusion Outcome Prediction Tool (ADOPT), estimate adoption trajectories but ...
Denis Momanyi, Jiqin Han, Job K. Lagat, Robert A. Marchant, George M. Ogendi, Hermann Lotze‐Campen, Stefan Sieber   +6 more
wiley   +1 more source

Dynamic Power Splitting in a Hybrid Common-Emitter/Common-Base Doherty Amplifier for High Average Efficiency Above 100 GHz Using an InP HBT Process

IEEE Journal of Microwaves
A Doherty power amplifier is introduced that uses a hybrid combination of common-emitter (CE) and common-base (CB) devices for operation above 100 GHz. The use of CE and CB devices demonstrates dynamic input power splitting between a main and auxiliary ...
Eythan Lam, James F. Buckwalter
doaj   +1 more source

GaN-based Power amplifiers for microwave applications

Ingeniería Investigación y Desarrollo, 2016
This paper presents a discussion about the design strategies of different kind of power amplifiers for RF/Microwave appli- cations, such as the tuned load power amplifier, class F, class F-1 and Doherty.
Jorge Julián Moreno-Rubio, Edison Ferney Angarita-Malver, Norma Restrepo-Burgos, Julián Leonardo Rodríguez, Juan Mauricio Salamanca, William Alexander Cuevas-Carrero   +5 more
doaj   +1 more source

Localized resources enable noninvasive genetic monitoring of small populations of mountain ungulates

Wildlife Society Bulletin, EarlyView.
Using microsatellite analysis of fecal samples collected at mineral licks from 2019–2022, we assessed abundance, apparent survival and genetics of bighorn sheep in the Teton Range, Wyoming, USA. Annual abundance estimates ranged from 118−132 individuals split into 2 similar‐sized demes and apparent survival estimates ranged from 0.72–0.92.
Carson J. Butler, Mary M. Conner, Rachel S. Crowhurst, Sarah R. Dewey, Clinton W. Epps   +4 more
wiley   +1 more source