Results 81 to 90 of about 5,646 (202)
Cellular reflectarray antenna and method of making same [PDF]
, 2010 A method of manufacturing a cellular reflectarray antenna arranged in an m by n matrix of radiating elements for communication with a satellite includes steps of determining a delay .phi.m,n for each of said m by n matrix of elements of said cellular ...
Romanofsky, Robert R
core +2 more sources
A high gain and high radiation efficiency optical transparent Fabry–Perot cavity antenna
Electronics Letters, Volume 60, Issue 8, April 2024.A novel high gain, high efficiency optically transparent Fabry–Perot Cavity antenna operating in millimetre‐wave is proposed. The antenna employs dual layers of transparent reflective surfaces and a transparent electromagnetic band gap ground to enhance the work band and obtain a high gain radiation.
Kang An, Peng Sun, Aixin Chen
wiley +1 more source
IEEE Access, 2019 A broadband single-layer reflectarray antenna comprising circular ring elements dented with sectorial slits is presented. The sizes of circular rings are fixed and equal for all elements, while the variation of the reflected phase is obtained by varying ...
Huiting Yu, Lu Guo
doaj +1 more source
All‐dielectric circularly polarised loop antenna made of high‐permittivity ceramic/water
IET Microwaves, Antennas &Propagation, Volume 18, Issue 4, Page 203-210, April 2024.A class of all‐dielectric CP loop antenna made of high‐permittivity ceramic/water is proposed to take full advantages of dielectric characteristics. 3‐D printing technology is here utilised to form the all‐in‐one structure of the proposed antenna. This work provides a methodology for the implementation of all‐dielectric CP antennas with all‐in‐one ...
Fei Fan +6 more
wiley +1 more source
Electronics Letters, 2003 It is shown that the dominant factor controlling reflectarray bandwidth is the bandwidth of the radiating element, and that the effect of non-constant path delays over the surface of the flat reflector has little significance unless the aperture is electrically very large and the f/D ratio is small. An example of a polarisation-twist reflectarray using
openaire +1 more source
Engineering Science and Technology, an International Journal, 2020 An X-band high-power microwave antenna with arbitrarily (elliptical) polarization is proposed and investigated in this paper. The proposed antenna is founded on a reflectarray composed of printed elements and excited by the microwave energy in the ...
Sahar Abdi Tazehabadi, Shahrokh Jam
doaj +1 more source
Design, manufacture and measurement of a low-cost reflectarray for global earth coverage [PDF]
, 2016 In this work a low-cost reflectarray with isoflux pattern for global Earth coverage is designed, manufactured and measured at 30GHz. The isoflux template is mathematically derived for a generic satellite and then particularized for a geostationary orbit.
Arrebola Baena, Manuel +5 more
core +2 more sources
Three‐dimensional metal‐only phoenix cell and its application for reflectarrays
IET Microwaves, Antennas &Propagation, Volume 18, Issue 4, Page 211-219, April 2024.A 3D metal‐only waveguide‐based phoenix cell for reflectarray, offering two operation modes for reflection phase manipulation is presented. A metal‐only reflectarray antenna at 20 GHz is designed and fabricated using selective laser melting 3D printing technology, showing good agreement between simulations and measurements.
Zhihang An +4 more
wiley +1 more source
IEEE Open Journal of Antennas and PropagationThis work presents a reflectarray-based base station antenna to integrate both backhaul (BH) and fronthaul (FH). The reflectarray operates at 28 GHz in dual linear polarization, using one polarization for the BH and another for the FH. The BH is a pencil
Alvaro F. Vaquero +3 more
doaj +1 more source
81-Element single-layer reflectarray with double-ring phasing elements for wideband applications [PDF]
, 2010 A microstrip reflectarray antenna utilizes a planar array of printed patch elements and a conventional prime or offset feed to form an alternative to the parabolic reflector [1].
Bialkowski, M.E. +3 more
core +1 more source