Results 81 to 90 of about 313,766 (176)

Fish welfare in a changing world: New developments and current challenges

Journal of Fish Biology, Volume 109, Issue 2, Page 650-692, August 2026.
Abstract The welfare of non‐human animals is central to ethical discussions on animal use, with increasing attention to fish welfare across research, aquaria, aquaculture, and fisheries. This paper reviews current theoretical approaches to animal welfare and recent advances in defining and assessing fish welfare since the seminal paper by Huntingford ...
Sonia Rey Planellas, João L. Saraiva, Eliane Gonçalves‐de‐Freitas, Pablo Arechavala‐Lopez, Bernice Bovenkerk, Michael Breen, Steven J. Cooke, Martin Føre, Lene Northwood, Lars Helge Stien, Sunil Kadri, Chris Noble, Jonatan Nilsson, Fernando Rodriguez, Cosme Salas, Peter Sandøe, Hans van de Vis   +16 more
wiley   +1 more source

Maintaining the coverage of a satellite multibeam hybrid reflector antenna by monitoring the current reflector state using signals of on-ground beacon [PDF]

Космические аппараты и технологии
The purpose of this work is to study the possibilities of electronic stabilization of beams of the space-based multibeam hybrid antenna. Multibeam hybrid reflector antenna covers the working area with many needle-like beams.
A. V. Dardymov, Yu. I. Choni, A. G. Romanov, I. Yu. Danilov   +3 more
doaj  

A Wideband Multibeam Transmitarray Antenna Based on 3‐D FSS

IET Microwaves, Antennas & Propagation
This paper presents a novel method for designing a wideband dual‐polarised multibeam transmitarray antenna. First, a dual‐polarised element is implemented through a polarisation‐separating, orthogonal‐interleaved three‐dimensional frequency‐selective ...
Longfei Wang, Wanping Zhang, Yumei Chang, Bo Li, Lei Zhu   +4 more
doaj   +1 more source

Multifeed EBG Dual-Band Antenna for Spatial Mission

International Journal of Antennas and Propagation, 2011
We present the design of a multibeam reflector antenna fed by a multifeed dual-band electromagnetic band gap (EBG) antenna to achieve a high-gain multispot coverage for space applications.
A. Kanso, R. Chantalat, U. Naeem, H. Chreim, M. Thevenot, S. Bila, T. Monediere   +6 more
doaj   +1 more source

Multibeam smart antenna systems for wireless communications

, 1999
Smart antennas have emerged as one of the key technologies in wireless communications. This thesis focuses on developing algorithms and structures that can be applied to one of the most important types of smart antennas--the multibeam smart antenna--in ...
Yu, Xiaoming
core   +1 more source

Wideband multibeam mushroom antenna array with low‐temperature cofired ceramic‐integrated pillbox transition for millimetre‐wave applications

IET Microwaves, Antennas & Propagation
This article presents a millimetre‐wave (MMW) wideband multibeam antenna array with a pillbox transition using multilayer low‐temperature cofired ceramic (LTCC) technology.
Bin Yuan, Yang Yuan, Huiru Zhang, Chengxiang Hao, Yan Zhao, Zhongjun Yu   +5 more
doaj   +1 more source

A New Approach in the Simplification of a Multiple-Beam Forming Network Based on CORPS Using Compressive Arrays

International Journal of Antennas and Propagation, 2012
This research paper deals with a innovative way to simplify the design of beam-forming networks (BFNs) for multibeam steerable antenna arrays based on coherently radiating periodic structures (CORPS) technology using the noniterative matrix pencil method
Armando Arce, Leonardo F. Yepes, David H. Covarrubias, Marco A. Panduro   +3 more
doaj   +1 more source

Multibeam antenna design

, 2007
The topic of multibeam antenna constructed using Butler Matrix as a beamforming network (BFN) has received much attention due to its simplicity and low cost of implementation.
Hamid, Mohamad Rijak, Ibrahim, Siti Zuraidah   +1 more
core  

Multibeam array antenna for base station in the fifth-generation mobile communication system / Intan Izafina Idrus [PDF]

, 2020
Research on the fifth-generation (5G) mobile communication system has been accelerated to meet the standardization of the International Telecommunications Union for higher data traffic and higher data rates.
Intan Izafina, Idrus
core   +1 more source

Simultaneous Multibeam Clustered Phased Arrays Analysis Using Mixed and Multiple Antenna Element Factors

Sensors
A novel design strategy for improving the radiative performance of simultaneous multibeam (SMB) phased arrays is addressed. The proposed scheme relies on the adoption of mixed and multiple antenna element factors with a dynamic selection of their ...
Francesco Alessio Dicandia, Simone Genovesi   +1 more
doaj   +1 more source