Results 91 to 100 of about 735,881 (338)

Part B: Pattern control of horn antennas [PDF]

During this period, the computations of the impedance elements were completed. These include interactions between the two electric current modes, the elecric current mode and the magnetic current mode, and the two magnetic current modes.
Balanis, Constantine A., Liu, Kefeng
core   +1 more source

A General and Efficient Framework for the Rapid Design of Miniaturized, Wideband, and High‐Bit RIS

Advanced Electronic Materials, EarlyView.
A general and efficient framework is proposed for the rapid design of high‐performance reconfigurable intelligent surfaces (RISs). This framework integrates advanced antenna design techniques and incorporates various load types, quantities, and values to achieve the design of high‐performance RISs.
Jun Wei Zhang, Zheng Xing Wang, Wanwan Cao, Zhen Jie Qi, Li Jie Wu, Han Qing Yang, Qun Yan Zhou, Si Ran Wang, Hui Dong Li, Jun Yan Dai, Jiang Luo, Jun Wei Wu, Jia Nan Zhang, Zhen Zhang, Qiang Cheng   +14 more
wiley   +1 more source

Transforming Linear to Circular Polarization on Horn Antennas by Using Multiple-Layer Frequency Selective Surfaces. [PDF]

Sensors (Basel), 2022
Heiman A, Tamas RD.
europepmc   +1 more source

High Performances Corrugated Feed Horns for Space Applications at Millimetre Wavelengths

, 2002
We report on the design, fabrication and testing of a set of high performance corrugated feed horns at 30 GHz, 70 GHz and 100 GHz, built as advanced prototypes for the Low Frequency Instrument (LFI) of the ESA Planck mission.
Alippi, E., Bersanelli, M., D'Arcangelo, O., Fusi, R., Guzzi, P., Mandolesi, N., Mennella, A., Muzzini, V., Nesti, R., Radaelli, P., Sandri, M., Simonetto, A., Sozzi, C., Villa, F.   +13 more
core   +1 more source

Compact fully metallic multi‐mode waveguide antenna for cellular communications

IET Microwaves, Antennas & Propagation
The needed isolation between elements for high‐performance beam steering array antennas is a challenging task especially when the distance between the antenna elements is reduced.
Ali Mokhtarani, Zahra Ghattan Kashani, Miguel Navarro‐Cía   +2 more
doaj   +1 more source

Focal axis resolver for offset reflector antennas [PDF]

, 1983
Method and apparatus for determining the focal axis of an asymmetrical antenna such as an offset paraboloid reflector whose physical rim is not coincident with the boundary of the electrical aperture but whose focal point is known is provided.
Schmidt, R. F.
core   +1 more source

Conformal Antenna Array for Millimeter-Wave Communications: Performance Evaluation

, 2015
In this paper, we study the influence of the radius of a cylindrical supporting structure on radiation properties of a conformal millimeter-wave antenna array.
Bisognin, A., Devillers, F., Ferrero, F., Kolmonen, V-M., Kyro, M., Luxey, C., Raisanen, A. V., Semkin, V.   +7 more
core   +1 more source

Revisiting a long‐overlooked skull: Implications for the distribution of Dinodontosaurus brevirostris (Kannemeyeriiformes) in the Brazilian Triassic

The Anatomical Record, EarlyView.
Abstract Dicynodonts (Anomodontia: Dicynodontia) were one of the main groups of terrestrial tetrapods in Permian and Triassic faunas. In Brazil, the genus Dinodontosaurus is one of the most common tetrapod taxon in the Triassic Santa Maria Supersequence. This genus has a complex taxonomic history and is represented in the Triassic of both Argentina and
Julia Lara Rodrigues de Souza, João Lucas Da Silva, Voltaire D. P. Neto, Arielli Fabrício Machado, Juan A. Escobar, Felipe L. Pinheiro   +5 more
wiley   +1 more source

Integrated terahertz TEM horn antenna

Electronics Letters, 2007
A terahertz transverse electromagnetic horn antenna (THz-TEMHA) monolithically integrated on a gallium arsenide substrate has been studied by means of subpicosecond pulses generated and measured on a 50 Ω coplanar waveguide. The measured reflection coefficient is below −10 dB from 100 GHz to about 1 THz.
Peytavit, Emilien, Lampin, Jean-Francois, Akalin, Tahsin, Desplanque, L.   +3 more
openaire   +1 more source

Broadening the semiaquatic scene: Quantification of long bone microanatomy across pinnipeds

The Anatomical Record, EarlyView.
Abstract Investigations of bone microanatomy are commonly used to explore lifestyle strategies in vertebrates. While distinct microanatomical limb bone features have been established for exclusively aquatic and terrestrial lifestyles, identifying clear patterns for the semiaquatic lifestyle remains more challenging.
Apolline Alfsen, Christian de Muizon, Olivier Lambert, Giovanni Bianucci, Antonia R. Kaffler, Matthew R. McCurry, Alexandra Houssaye, Rafael M. Varas‐Malca, Rodolfo Salas‐Gismondi, Oliver Hampe, Eli Amson   +10 more
wiley   +1 more source