Results 71 to 80 of about 19,885 (293)

The Trapezoidal Dielectric Resonator Antenna [PDF]

IEEE Transactions on Antennas and Propagation, 2008
The operational concepts of the trapezoidal dielectric resonator antennas (DRAs) are presented and their performance is studied theoretically and experimentally. The rectangular parallelepiped is a special case of the more general trapezoid and therefore a comparison between both is useful in order to highlight their similarities and differences. It is
Almpanis, G., Fumeaux, C., Vahldieck, R.
openaire   +2 more sources

Dual‐mode dielectric resonator antenna design with stub‐loaded feeding slot

Electronics Letters
A dual‐mode dielectric resonator antenna based on a microstrip line‐slot coupling feed, operating in both the GMS‐900 and GMS‐1800 frequency bands, is presented.
Wanyu Zhang, Qian Yang, Hang Yi, Jingchao Sheng, Ying Zhu, Yifan Yang   +5 more
doaj   +1 more source

Experimental investigation of the effects of polarization on the measured radiation efficiency of a dielectric resonator antenna [PDF]

, 2008
©2008 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any ...
Almpanis, G., Benedickter, H., Fumeaux, C., Lai, Q., Vahldieck, R.   +4 more
core   +1 more source

Sustainable Catalyst‐Free PLG Networks: Recyclability, Biodegradability, and Functional Performance

Advanced Functional Materials, EarlyView.
A catalyst‐additive free covalent adaptable network is developed from star‐shaped poly(lactide‐co‐glycolide) cross‐linked with pyromellitic dianhydride, enabling internal carboxylic acid‐driven transesterification. The resulting biodegradable network exhibits mechanical robustness (Young's modulus ≈1.6 GPa), complete recyclability, rapid biodegradation
Lars Schwarzer, Emilia Fulajtar, Seema Agarwal   +2 more
wiley   +1 more source

Dual-band dielectric resonant antenna [PDF]

IEEE Antennas and Propagation Society Symposium, 2004., 2004
Dielectric resonant (DR) antennas with an inserted slit or well are proposed and verified by HFSS simulation. It is found that broadband and dual-band operation can be achieved by perturbation of the air gap.
Yung, Tsung-Shan, Chang, Tze-Hsuan, Wu, Wen-Zhou, Kiang, Jean-Fu   +3 more
openaire   +2 more sources

Implementation of packaged integrated antenna with embedded front end for Bluetooth applications [PDF]

, 2008
The design, integration and realization of system in enhanced package approach towards fully functional system level integration by using a compact Bluetooth USB dongle as the demonstrator is presented here.
Chee-Parng, C., Kuruveettil, H., Popov, A.P., Rotaru, M., Rui, Y., Ying, L.Y.   +5 more
core   +1 more source

2D Magnetic and Topological Quantum Materials and Devices for Ultralow Power Spintronics

Advanced Functional Materials, EarlyView.
2D magnets and topological quantum materials enable ultralow‐power spintronics by combining robust magnetic order with symmetry‐protected, Berry‐curvature‐driven transport. Fundamentals of 2D anisotropy and spin‐orbit‐coupling induced band inversion are linked to scalable growth and vdW stacking.
Brahmdutta Dixit, Yifei Yang, Shawn Li, Yu‐Chia Chen, Qi Jia, Jian‐Ping Wang   +5 more
wiley   +1 more source

Improved Design of a Broadband Dielectric Resonator Antenna with Wide Beam

International Journal of Antennas and Propagation, 2018
A wide-beam and broadband dielectric resonator antenna (DRA) with broadside pattern is proposed and analyzed. The excellent performance of wide beam is achieved by designing the metal ground. In addition, the antenna has broad bandwidth by introducing an
Yan He, Weihua Wang, Hu Yang, Xiangyu Du
doaj   +1 more source

Nanothermometry in Living Cells: Physical Limits, Conceptual and Material Challenges

Advanced Functional Materials, EarlyView.
Heat and temperature are fundamental to life. When nanothermometers began probing regions as small as a living cell, they triggered controversial claims of large intracellular temperature gradients. We review physical constraints energy‐conservation, entropy production, thermodynamic fluctuations, and molecular dynamics.
Taras Plakhotnik
wiley   +1 more source

Dualband Split Dielectric Resonator Antenna [PDF]

IEEE Transactions on Antennas and Propagation, 2007
A dualband dielectric resonator antenna (DRA) is designed by splitting a rectilinear dielectric resonator (DR) and carving notches off the DR. It is observed that notches engraved at different positions affect different modes. Removal of dielectric material from where the electric field is strong incurs a significant increase in resonant frequency. The
Chang, Tze-Hsuan, Kiang, Jean-Fu
openaire   +1 more source