Results 61 to 70 of about 32,533 (358)

Multi-feed cone Cassegrain antenna Patent [PDF]

, 1970
Design and operation of multi-feed cone Cassegrain ...
Katow, M. S., Levy, G. S., Stelzried, C. T.   +2 more
core   +1 more source

Development Toward a Ground-Based Interferometric Phased Array for Radio Detection of High Energy Neutrinos [PDF]

, 2017
The in-ice radio interferometric phased array technique for detection of high energy neutrinos looks for Askaryan emission from neutrinos interacting in large volumes of glacial ice, and is being developed as a way to achieve a low energy threshold and a
Avva, J., Bechtol, K., Chesebro, T., Cremonisi, L., Deaconu, C., Gupta, A., Ludwig, A., Messino, W., Miki, C., Nichol, R., Oberla, E., Ransom, M., Romero-Wolf, A., Saltzberg, D., Schlupf, C., Shipp, N., Varner, G., Vieregg, A. G., Wissel, S. A.   +18 more
core   +2 more sources

Direct Metal Deposition of Graphene–Ti28Nb35.4Zr Matrix Composites With Enhanced Mechanical, Corrosion, and Biocompatibility Properties for Bone Implants

Advanced Engineering Materials, EarlyView.
Graphene nanoplatelet (0.1 wt.%) reinforcement significantly enhances the performance of β Ti‐28Nb‐35.4Zr alloy. Grain refinement, reduced water contact angle, and improved surface characteristics promote osteoblast adhesion and complete surface coverage after 7 days.
Khurram Munir, Jixing Lin, Yuncang Li, Li Zhu, Paul F. A. Wright, Cuie Wen   +5 more
wiley   +1 more source

Multiband circularly polarised CubeSat antenna operating in S, C, X, Ku, K, and Ka bands

IET Microwaves, Antennas & Propagation
A novel design of a high‐frequency multiband with a circular polarisation antenna based on a four‐patch antenna system consolidated with an Archimedean spiral antenna for CubeSat applications.
Hesham M. Elkady, Haythem H. Abdullah, Saad M. Darwish   +2 more
doaj   +1 more source

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

Advanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar, Akash Vyas, Mohammad Aatif Qazi, Nashit Jalal, Maria Ophelia Jarligo, Mostafa Yakout, Jing Liu, André McDonald   +7 more
wiley   +1 more source

A Passive Harmonic Tag for Humidity Sensing

International Journal of Antennas and Propagation, 2014
This paper describes a passive harmonic tag for radio frequency identification (RFID) and wireless sensor applications. The tag uses a dual polarized UHF patch antenna as an input antenna.
Antonio Lazaro, Ramon Villarino, David Girbau   +2 more
doaj   +1 more source

High gain and wideband patch antenna with wide 3‐dB axial ratio bandwidth operating at TM01 and TM11 modes

IET Microwaves, Antennas & Propagation, 2021
A wideband and high gain circularly polarised patch antenna has been introduced. The proposed antenna combines an aperture coupled feeding with a T‐slot, four metallic vias and a patch with a diagonal slot to present high gain and wide 3‐dB axial ratio ...
Rasoul Fakhte, Iman Aryanian
doaj   +1 more source

Primary Beam and Dish Surface Characterization at the Allen Telescope Array by Radio Holography

, 2011
The Allen Telescope Array (ATA) is a cm-wave interferometer in California, comprising 42 antenna elements with 6-m diameter dishes. We characterize the antenna optical accuracy using two-antenna interferometry and radio holography. The distortion of each
Ackermann, R. F., ATA GROUP, Atkinson, Shannon, Backer, D. C., Backus, P. R., Barott, William, Bauermeister, Amber, Blair, Samantha K., Blitz, Leo, Bock, D. C. -J., Bower, Geoffrey C., Bradford, Tucker, Cheng, Calvin, Croft, Steve, Davis, M. M., DeBoer, D. R., Dexter, Matt, Dreher, John, Engargiola, Greg, Fields, Ed, Forster, J. R., Gutierrez-Kraybill, Colby, Harp, G. R., Heiles, Carl, Helfer, Tamara, Jordan, Jane, Jorgensen, Susan, Keating, Garrett, Kilsdonk, Tom, Law, Casey, Lugten, John, MacMahon, D. H. E., McMahon, Peter, Milgrome, Oren, Nadler, Z. J., Pierson, Tom, Randall, Karen, Ross, John, Shostak, Seth, Siemion, Andrew, Smolek, Ken, Tarter, J. C., Thornton, Douglas, Urry, Lynn, Welch, W. J., Werthimer, Dan, Whysong, David, Williams, Peter K. G., Wright, M. C. H.   +48 more
core   +1 more source

The Optical Design and Characterization of the Microwave Anisotropy Probe [PDF]

, 2003
The primary goal of the MAP satellite, now in orbit, is to make high fidelity polarization sensitive maps of the full sky in five frequency bands between 20 and 100 GHz.
A. Kogut, Bennett H. E., C. Barnes, C. Bennett, C. Jackson, D. N. Spergel, D. T. Wilkinson, Davies H., E. L. Wright, E. Wollack, G. Hinshaw, G. S. Tucker, Garg R., Halpern M., Hancock S., Hass G., Keller J., L. Page, M. Halpern, M. Limon, Mon K. K., N. Jarosik, Nicodemus F., Ohm E., Page L., Pippard A. B., Rahmat-Samii Y., Rausch W., Ruze J., S. S. Meyer   +29 more
core   +1 more source

Nondestructive Testing of Welded Composite Metal Foams

Advanced Engineering Materials, EarlyView.
X‐ray computed tomography (CT) is used to evaluate welded steel–steel composite metal foam (CMF) joints of two density classes. It reports variation in postweld spatial void distribution and correlates it to weld‐induced changes, mechanical performance, and failure within welded CMF panels.
Chinmaya Prerana Inguva, Aman Kaushik, Afsaneh Rabiei   +2 more
wiley   +1 more source