Results 61 to 70 of about 51,777 (301)

New methods to reduce leakage errors in planar near-field measurements [PDF]

, 2011
This paper describes two methods to cancel the effect of two kinds of leakage signals which may be presented when an antenna is measured in a planar near-field range.
Burgos Martínez, Sara, Cano Facila, Francisco Jose, Sierra Castañer, Manuel   +2 more
core   +1 more source

Aberration-free ultra-thin flat lenses and axicons at telecom wavelengths based on plasmonic metasurfaces

, 2012
The concept of optical phase discontinuities is applied to the design and demonstration of aberration-free planar lenses and axicons, comprising a phased array of ultrathin subwavelength spaced optical antennas.
Aieta F., Artl J., Blanchard R., Bobb D. A., Cai W., Encinar J. A., Fattal D., Federico Capasso, Francesco Aieta, Genevet P., Hecht E., Huang F. M., Huang F. M., Jarutis V., Kats M. A., Kinglsake R., Koppens F. H.L., Liu Z., Lu F., Manek I., McGrath D. T., McLeod J. H., McLeod J. H., Mikhail A. Kats, Nanfang Yu, Ni X., Padilla P., Patrice Genevet, Pendry J. B., Pozar D. M., Pozar D. M., Ren. Q., Rogers E. T. F., Romain Blanchard, Ryan C. G. M., Smith D. R., Tetienne J. P., Verslegers L, West P. R., Yu N., Zeno Gaburro   +40 more
core   +1 more source

A Compact Spin‐Coated Graphene UWB Antenna for Breast Tumor Detection

Advanced Engineering Materials, EarlyView.
A compact, spin‐coated graphene ultra‐wideband patch antenna designed for breast tumor detection, capable of distinguishing between malignant and benign tumors. This innovative antenna can serve as an effective initial screening tool, particularly in resource‐limited settings such as rural areas, where access to advanced medical equipment like MRI and ...
Raja Rashidul Hasan, Shuvra Saha, Sumit Hassan Eshan, Rinku Basak, Md. Nahian Al Subri Ivan, Ahmed Murtuza Saleque, Raja Tariqul Hasan Tusher, Sadia Zabin, Md. Abdur Rahman, Yuen Hong Tsang   +9 more
wiley   +1 more source

Review of Low Profile Substrate Integrated Waveguide Cavity Backed Antennas

International Journal of Antennas and Propagation, 2013
Low profile cavity backed antennas (CBA) based on substrate integrated waveguide (SIW) technology presented in published papers have been reviewed in this paper.
Guo Qing Luo, Tian Yang Wang, Xiao Hong Zhang   +2 more
doaj   +1 more source

Antenna design of temperature measurement system based on SAW temperature sensor

Dianzi Jishu Yingyong, 2018
In order to measure the junction temperature of power equipment, a novel strategy of temperature measurement based on surface acoustic wave passive wireless temperature sensor is designed. The antennas and the matching methods of antennas and sensors are
Qi Bensheng, Han Yan, Tan Junyan, Cai Chunhua   +3 more
doaj   +1 more source

Phase-only Synthesis Algorithm for Transmitarrays and Dielectric Lenses [PDF]

, 2018
In this work a phase-only synthesis algorithm is applied for the design of lens-array antennas yielding a desired radiation pattern. The potential relevance of spillover effect on the lens radiation pattern is illustrated, making it necessary to include ...
Fernández Robledo, Omar, González Plaza, Enrique, León Fernández, Germán, Loredo Rodríguez, Susana   +3 more
core  

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

Advanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti, Finn‐Lennard Janthur, Selina Raumel, Sascha Jan Zimmermann, Sarah Seffer, René Gustus, Sebastian Herbst, Marc C. Wurz, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Florian Nürnberger   +11 more
wiley   +1 more source

Miniaturization of palanar antennas based on metamaterials for 5G and WIMAX communications applications [PDF]

Journal of Electrical and Electronics Engineering, 2021
The objective of this work is the design and simulation of an antenna based on metamaterials in order to miniaturize the initial dimensions of the planar antennas. Metamaterials are on the rise in recent years.
BOUSALAH Fayza, BENOSMAN Hayat, SEDJELMACI Amina   +2 more
doaj  

Electrically Small Supergain Arrays

, 2007
The theory, computer simulations, and experimental measurements are presented for electrically small two-element supergain arrays with near optimal endfire gains of 7 dB.
A. D. Yaghjian, Altshuler, Altshuler, Altshuler, Azadegan, Balanis, Bayraktar, Best, Best, Best, Best, Bloch, Bloch, Bouwkamp, Brown, Buell, Dobbins, E. E. Altshuler, Fujimoto, Hansen, Harrington, Haviland, Karlsson, Kraus, Lancaster, Lim, Lim, Lim, Lin, Miron, Montrose, Newman, Oseen, Riblet, S. R. Best, T. H. O'Donnell, Uzkov, Walkinshaw, Wheeler, Wheeler, Yaghjian, Yaghjian, Yaru, Yoshida   +43 more
core   +1 more source

Oxide‐Free Titanium Coatings by Wire Arc Spraying in a Silane‐Doped Inert Atmosphere

Advanced Engineering Materials, EarlyView.
A silane‐doped argon atmosphere enables the production of oxide‐free titanium coatings via twin‐wire arc spraying at ambient pressure. This innovative approach eliminates residual oxygen, creating process conditions that prevent oxidation and nitride formation.
Manuel Rodriguez Diaz, Maik Szafarska, René Gustus, Kai Möhwald, Hans Jürgen Maier   +4 more
wiley   +1 more source