Results 41 to 50 of about 167,149 (275)

Hierarchical sinuous-antenna phased array for millimeter wavelengths

, 2018
We present the design, fabrication and measured performance of a hierarchical sinuous-antenna phased array coupled to superconducting transition-edge-sensor (TES) bolometers for millimeter wavelengths.
Cukierman, Ari, Lee, Adrian T., Raum, Christopher, Suzuki, Aritoki, Westbrook, Benjamin   +4 more
core   +1 more source

Photonic Time Crystals and Time‐Varying Electromagnetic Metamatter: A New Direction for Ultrafast Tunable Photonic and Microwave Materials and Devices

Advanced Science, EarlyView.
Photonic time crystals (PTCs) are systems in which electromagnetic parameters are modulated periodically in time, producing momentum bandgaps via temporal scattering rather than spatial Bragg processes. This review examines the theoretical frameworks, modeling, and computational tools for time‐varying media, and summarizes experimental demonstrations ...
Ranjan Kumar Patel, Shriram Ramanathan, Ronald P. Jenkins, Michael J. Carter   +3 more
wiley   +1 more source

Compact UWB Monopole for Multilayer Applications [PDF]

, 2006
A novel compact, dual layer UWB monopole antenna is presented. This low profile ultra-wideband antenna is fed by a 50 ? shielded strip-line with an array of metal vias making the conducting walls.
Bai, Qiang, Batchelor, John C., Sanz-Izquierdo, Benito, Young, Paul R.   +3 more
core   +1 more source

Liquid Metals in Radio Frequency Applications: A Review of Physics, Manufacturing, and Emerging Technologies

Advanced Electronic Materials, EarlyView.
This paper reviews the physics of liquid metals in RF devices, including the influence of mechanical strain on resonance as well as fabrication methods and strategies for designing tunable and strain‐tolerant inductors, capacitors, and antennas.
Md Saifur Rahman, William J. Scheideler
wiley   +1 more source

Conception of bi-band rectangular microstrip array antenna

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
Narrow band is the major inconvenient of the microstrip antenna. However, various multiband techniques are proposed towards several applications.
Zaakri Safa, Zenkouar Lahbib, Bri Seddik
doaj   +1 more source

Antenna-coupled TES bolometers used in BICEP2, Keck array, and SPIDER

, 2015
We have developed antenna-coupled transition-edge sensor (TES) bolometers for a wide range of cosmic microwave background (CMB) polarimetry experiments, including BICEP2, Keck Array, and the balloon borne SPIDER. These detectors have reached maturity and
A. D. Turner, A. G. Vieregg, A. Orlando, A. S. Rahlin, A. Trangsrud, A. Weber, B. G. Keating, C. A. Bischoff, C. B. Netterfield, C. D. Dowell, C. D. Reintsema, C. D. Sheehy, C. L. Kuo, C. L. Wong, C. Pryke, D. Barkats, D. V. Wiebe, E. Bullock, E. M. Leitch, G. C. Hilton, G. Chattopadhyay, G. Davis, G. P. Teply, H. G. LeDuc, H. Hui, H. T. Nguyen, I. Buder, J. A. Bonetti, J. A. Brevik, J. E. Tolan, J. J. Bock, J. M. Kovac, J. P. Filippini, J. P. Kaufman, J. Zmuidzinas, K. D. Irwin, K. Megerian, K. S. Karkare, K. W. Yoon, L. Duband, L. Moncelsi, M. Amiri, M. C. Runyan, M. Halpern, M. Hasselfield, M. Lueker, N. Llombart, null null, P. A. R. Ade, P. K. Day, P. Mason, P. Wilson, R. O’Brient, R. S. Tucker, R. Schwarz, R. V. Sudiwala, R. W. Aikin, R. W. Ogburn IV, S. A. Kernasovskiy, S. Fliescher, S. J. Benton, S. Kefeli, S. R. Golwala, S. R. Hildebrandt, S. Richter, V. Hristov, W. C. Jones, Z. K. Staniszewski   +67 more
core   +1 more source

An efficient 1-D periodic boundary integral equation technique to analyze radiation onto straight and meandering microstrip lines [PDF]

, 2012
A modeling technique to analyze the radiation onto arbitrary 1-D periodic metallizations residing on a microstrip substrate is presented. In particular, straight and meandering lines are being studied. The method is based on a boundary integral equation,
De Zutter, Daniël, Rogier, Hendrik, Vande Ginste, Dries   +2 more
core   +1 more source

Large‐Area Metallic Nanohelices for Engineering Optical Chirality

Small, EarlyView.
By exploiting the nanoscale engineering of residual stresses in metallic thin films, this method enables scalable fabrication of submicrometer metallic helices with tunable geometry and material versatility. The resulting structures exhibit pronounced chiroptical responses across the mid‐ to near‐infrared range, offering a robust platform for chiral ...
Thu Hac Huong Le, Hisako Sato, Takuo Tanaka, Dmitry Budker   +3 more
wiley   +1 more source

Retracted: Design and Performance Evaluation of OAM-Antennas: A Comparative Review

IEEE Access, 2023
For many communication systems, including wireless networks, mobile, satellite, radar, remote sensing, and many more applications, antenna arrays are very necessary.
Omar A. Saraereh
doaj   +1 more source

Effect of Curvature of the Conformal Microstrip Antenna [PDF]

, 2011
A comprehensive study of the conformal microstrip printed antenna is presented. The main advantages and drawbacks of a microstrip conformal antenna are discussed. The paper discusses both conformal microstrip arrays.
Bajwa, Hassan, Elleithy, Khaled M., Elrashidi, Ali   +2 more
core