Results 91 to 100 of about 152,416 (209)

Deterministic Solutions to Improved Generalized Joined Coupler Matrix for Multibeam Antennas

Analog beamforming for multibeam antennas is envisioned as a key enabling technology for next-generation mobile communications and sensing networks. Whilst many existing analog multibeam antennas have limited beam forming and steering capabilities, a ...
Guo, YJ, Wu, K
core   +1 more source

A Low-Cost Multibeam Switching Antenna Using Reconfigurable Hybrid Metasurface for Beamforming Applications. [PDF]

Micromachines (Basel), 2023
Sheng L, Luo Y, Ning G, Meng L, Cao W.
europepmc   +1 more source

Compact Multi-Beamforming Networks Based on Generalized Joined Coupler Matrix With Flexible Beam Angles and Low Sidelobe Levels

IEEE Open Journal of Antennas and Propagation
The investigation of beamforming networks (BFNs) for multibeam antenna arrays has been ongoing for decades. However, enabling individually controllable multibeams employing a BFN has remained a recognizable challenge.
Yang Xu, He Zhu, Y. Jay Guo
doaj   +1 more source

Study and miniaturisation of antennas for ultra wideband communication systems [PDF]

, 2009
PhDWireless communications have been growing with an astonishing rate over the past few years and wireless terminals for future applications are required to provide diverse services.
Guo, Lu
core   +1 more source

Far-field multi-beam pattern synthesis for phased array antennas using Lorentz reciprocity theorem.

PLoS ONE
In this paper, by combining the Lorentz reciprocity theorem with the particle swarm algorithm, the array beam synthesis method based on wireless power transmission efficiency is successfully applied to the automated beam synthesis process.
Yida Fan, Lijuan Li, Ravi Kumar Arya, Junwei Dong, Shiyuan Kong   +4 more
doaj   +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

Rotman Lens-Based Multibeam Planar Antenna System for UWB IoT Applications

Журнал нано- та електронної фізики
This paper presents a cost-effective and portable multibeam planar antenna system designed to enhance connectivity in Internet of Things (IoT) applications.
I. Rama Koteswara Rao, R. Sambasiva Nayak, Rajasekhar K   +2 more
doaj   +1 more source

How Good Is a Tactical-Grade GNSS + INS (MEMS and FOG) in a 20-m Bathymetric Survey? [PDF]

Sensors (Basel), 2023
Oguntuase JO, Hiroji A, Komolafe P.
europepmc   +1 more source

Performance Evaluation of Distributed-Antenna Communications Systems Using Beam-Hopping

, 2005
Digital beamforming (DBF) techniques are capable of improving the performance of communications systems significantly. However, if the transmitted signals are conflicted with strong interference, especially, in the direction of the transmitted beams ...
Yang, L.-L., Zhu, J., Hu, H.
core  

Ground User Clustering for Adaptive Multibeam GEO Satellite Networks. [PDF]

Sensors (Basel)
Shehata H, Inaltekin H, Collings IB.
europepmc   +1 more source