Results 11 to 20 of about 3,891 (267)

Origami Antennas

open access: yesIEEE Open Journal of Antennas and Propagation, 2021
The field of foldable and physically reconfigurable antennas has recently attracted significant interest from diverse scientific communities, including researchers on antennas, material science, mechanical engineering and numerical modeling.
Stavros V. Georgakopoulos   +9 more
doaj   +1 more source

Multibeam Reflectarrays in Ka-Band for Efficient Antenna Farms Onboard Broadband Communication Satellites

open access: yesSensors, 2020
Broadband communication satellites in Ka-band commonly use four reflector antennas to generate a multispot coverage. In this paper, four different multibeam antenna farms are proposed to generate the complete multispot coverage using only two multibeam ...
Daniel Martinez-de-Rioja   +4 more
doaj   +1 more source

Multiband Reconfigurable Antennas for 5G Wireless and CubeSat Applications: A Review

open access: yesIEEE Access, 2022
The rapid development of wireless technology has sparked interest in multi-band reconfigurable antennas as devices and satellites are innovating toward miniaturization.
Kebonyethebe Ramahatla   +3 more
doaj   +1 more source

Solar-Powered Active Integrated Antennas Backed by a Transparent Reflectarray for CubeSat Applications

open access: yesIEEE Access, 2020
A gain-enhancement scheme that combines an active integrated antenna (AIA) and an optically transparent reflectarray on solar cells is proposed for CubeSat applications.
Yen-Sheng Chen   +2 more
doaj   +1 more source

A Planar Multifunctional Four-Port Antenna System for Sub-Urban Mobile Tablet

open access: yesIEEE Access, 2019
A planar multifunctional four-port antenna system integrated on one substrate applied in the suburban mobile tablet is presented in this paper. The types of these antennas are selected based on different functions and the interactions between them are ...
Li Ying Nie   +3 more
doaj   +1 more source

Low-Cost S-Band Reconfigurable Monopole/Patch Antenna for CubeSats

open access: yesIEEE Open Journal of Antennas and Propagation, 2020
The development of reconfigurable antennas compatible with a CubeSat form factor can aid several space missions. Often, satellite missions require multiple wireless links with the same radio, but the design of such antennas is challenging due to the ...
Alexander D. Johnson   +3 more
doaj   +1 more source

Irregular Layout for a Satellite’s Interferometric Array

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
We address the optimization problem of antenna placement on satellite-mounted interferometric synthetic-aperture instruments. In classic designs, the antennas on satellites are aligned regularly on the satellite’s frame.
Paul Krzakala   +10 more
doaj   +1 more source

A new periodic fractal parasitic structure to design the circularly polarized microstrip antenna for the satellite navigation system

open access: yesIET Microwaves, Antennas & Propagation, 2021
This study presents a novel approach to design the single‐feed circularly polarized (CP) microstrip antenna by the periodic fractal parasitic structure (PFPS).
Kun Wei, Jun‐Long Wang, Rui Xu, Xia Ai
doaj   +1 more source

Recent Developments of Reflectarray Antennas in Dual-Reflector Configurations

open access: yesInternational Journal of Antennas and Propagation, 2012
Recent work on dual-reflector antennas involving reflectarrays is reviewed in this paper. Both dual-reflector antenna with a reflectarray subreflector and dual-reflectarrays antennas with flat or parabolic main reflectarray are considered.
Carolina Tienda   +2 more
doaj   +1 more source

Reliable and Secure Transmission in Multiple Antennas Hybrid Satellite-Terrestrial Cognitive Networks Relying on NOMA

open access: yesIEEE Access, 2020
We study a hybrid satellite-terrestrial cognitive network (HSTCN) relying on non-orthogonal multiple access (NOMA) interconnecting a satellite and multiple terrestrial nodes.
Hong-Nhu Nguyen   +6 more
doaj   +1 more source

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