Results 31 to 40 of about 5,244,411 (250)

Low-Profile Slot Antenna Integrated with a Thin Polymer non-Metallic Battery [PDF]

, 2013
In this study, a low-profile designed with the purpose of having the ability to be integrated into the structure of a layered non-metallic polymer battery.
Batchelor, John, John Batchelor, Michael Woods, Woods, Michael   +3 more
core   +1 more source

Reconfigurable wideband patch antenna for cognitive radio [PDF]

, 2009
Cognitive radio communication is envisaged to be a new paradigm of methodologies for enhancing the performance of radio communication systems through the efficient utilization of radio spectrum.
AbuTarboush, HF, Khan, S, Nilavalan, R, Budimir, D, Al-Raweshidy, H   +4 more
core   +5 more sources

Design of an ultra-wideband energy harvesting rectifier antenna

Dianzi Jishu Yingyong, 2022
In order to make better use of RF energy of space radio waves, a broadband antenna covering resonant frequency from 1 to 14 GHz is designed, and a rectified antenna is designed for 2.4 GHz. The main part of the antenna is a circular patch.
Xue Liang, Bai Xue, Xu Leijun
doaj   +1 more source

Circularly polarized U-Slot antenna [PDF]

, 2007
Circularly polarized single-layer U-slot microstrip patch antenna has been proposed. The suggested asymmetrical U-slot can generate the two orthogonal modes for circular polarization without chamfering any corner of the probe-fed square patch microstrip ...
Tong, KF, Wong, TP
core  

2D Skeletal Muscle Thin Film Actuators Enhance Efficiency of Biohybrid Robots

Advanced Functional Materials, EarlyView.
2D skeletal muscle thin film actuators generate millinewton‐scale forces and millimeter‐scale strokes while remaining functional for over 30 days. Their force density is 20‐fold higher than 3D skeletal muscle actuators, enabling multi‐fin robots with tunable speed and multidirectional steering.
Maheera Bawa, Arielle Berman, Laura Schwendeman, Ferdows Afghah, Seanbiron Johnson, Ritu Raman   +5 more
wiley   +1 more source

The Slot in the System: An empirical case study of the entrenchment of a construct

Lexis: Journal in English Lexicology
In Construction Grammar, many units are depicted as semi-schematic objects, with a fixed part and a slot to be filled by another language unit, leading to the utterance of a construct.
Quentin Feltgen
doaj   +1 more source

Mechanics of Telson Ridges in Mantis Shrimp for Impact Analysis and Implications for Bioinspired Elastic Shell Designs

Advanced Functional Materials, EarlyView.
The mantis shrimp telson reveals how ridged biological shields control deformation under impact. Inspired by this architecture, telson‐inspired ridged curved shells transform ridge geometry and macroscopic curvature into bidirectional snap‐through, tunable stiffness, and enhanced hysteretic energy dissipation for multifunctional architected materials ...
Phani Saketh Dasika, Adwait Trikanad, Wei Huang, Taige Hao, David Kisailus, Pablo D. Zavattieri   +5 more
wiley   +1 more source

Radiation Characteristic Improvement of X-Band Slot Antenna Using New Multiband Frequency-Selective Surface

International Journal of Antennas and Propagation, 2014
A new configuration of frequency-selective surfaces (FSSs) is designed and presented with multiresonance characteristics which covers all of the frequency domain of X-band from 8 to 12 GHz.
Elham Moharamzadeh
doaj   +1 more source

Designing a sub-wavelength array to change the direction of the radiation wave to a desired angle using variable Huygens surfaces [PDF]

AUT Journal of Electrical Engineering
Since Huygens structures with phase shift lead to beam rotation, this manuscript discusses a phase shifter structure for the Huygens surface based on Tapered Slot Transition in the frequency range of 9.95-10.2 GHz using varactor diodes.
Sajedeh Zamani Noughabi, Amir Saman Nooramin, Mohammad Soleimani   +2 more
doaj   +1 more source

A Dual-band Microstrip Slotted Antenna for UHF and Microwave RFID Readers [PDF]

, 2018
In this paper a new and simple dual-band microstrip slot antenna design combined with two inverted L-shaped slots integrated in the radiating patch is presented.
Zbitou, Jamal; Hassan 1st University, Elabdellaoui, Laarbi; Hassan 1st University, Bennis, Hamid; Moulay Ismail University, Meknes, Abdelmounim, El Hassane; Hassan 1st University, Latrach, Mohamed; Microwave Group, Hamraoui, Ahmed El; Hassan 1st University, Laarbi Elabdellaoui, El Hassan Abdelmounim, Mohamed Latrach, Hamid Bennis, El Hassane Abdelmounim, Ahmed El Hamraoui, Ahmed Errkik, Jamal Zbitou   +13 more
core   +1 more source