Numerical and experimental analyses of wearable antennas, including novel fabrication and metrology techniques

2021 ◽  
pp. 209-245
Keyword(s):  
Wearable Antennas ◽  
Experimental Analyses

ONSET AND CRACK PROPAGATION OF COMPOSITE STRUCTURES: NUMERICAL AND EXPERIMENTAL ANALYSES

2019 ◽  
Author(s):  
Marcus Angelo ◽  
Marcelo Leite Ribeiro ◽  
Fernando Madureira ◽  
Volnei Tita
Keyword(s):  
Crack Propagation ◽  
Composite Structures ◽  
Experimental Analyses

Thermodynamic and Experimental Analyses of the Carbothermic Reduction of Tungsten Slag

JOM ◽  
2021 ◽  
Author(s):  
Chunfa Liao ◽  
Sui Xie ◽  
Xu Wang ◽  
Baojun Zhao ◽  
Boqing Cai ◽  
...  
Keyword(s):  
Carbothermic Reduction ◽  
Experimental Analyses

Theoretical and experimental analyses of the internal leakage in single-screw expanders

2018 ◽  
Vol 86 ◽  
pp. 273-281 ◽  
Author(s):  
Lili Shen ◽  
Wei Wang ◽  
Yuting Wu ◽  
Liang Cheng ◽  
Biao Lei ◽  
...  
Keyword(s):  
Single Screw ◽  
Experimental Analyses

scholarly journals New Compact Wearable Metamaterials Circular Patch Antennas for IoT, Medical and 5G Applications

2020 ◽  
Vol 3 (4) ◽  
pp. 42
Author(s):  
Albert Sabban
Keyword(s):  
Communication Systems ◽  
Dynamic Range ◽  
Low Cost ◽  
Patch Antennas ◽  
Antenna Feed ◽  
Circular Patch ◽  
Wearable Antenna ◽  
Wearable Antennas ◽  
Feed Network ◽  
Line Design

The development of compact passive and active wearable circular patch metamaterials antennas for communication, Internet of Things (IoT) and biomedical systems is presented in this paper. Development of compact efficient low-cost wearable antennas are one of the most significant challenges in development of wearable communication, IoT and medical systems. Moreover, the advantage of an integrated compact low-cost feed network is attained by integrating the antenna feed network with the antennas on the same printed board. The efficiency of communication systems may be increased by using efficient passive and active antennas. The system dynamic range may be improved by connecting amplifiers to the printed antenna feed line. Design, design considerations, computed and measured results of wearable circular patch meta-materials antennas with high efficiency for 5G, IoT and biomedical applications are presented in this paper. The circular patch antennas electrical parameters on the human body were analyzed by using commercial full-wave software. The circular patch metamaterial wearable antennas are compact and flexible. The directivity and gain of the antennas with Circular Split-Ring Resonators (CSRR) is higher by 2.5dB to 3dB than the antennas without CSRR. The resonant frequency of the antennas without CSRR is higher by 6% to 9% than the antennas with CSRR. The computed and measured bandwidth of the stacked circular patch wearable antenna with CSRR for IoT and medical applications is around 12%, for S11 lover than −6dB. The gain of the circular patch wearable antenna with CSRR is around 8dBi.

Achieving High Flatness of Workpiece Edge Shape by Considering Polishing Pressure

2010 ◽  
Vol 447-448 ◽  
pp. 71-75
Author(s):  
Takahiro Miyake ◽  
Toshiyuki Enomoto
Keyword(s):  
Semiconductor Devices ◽  
Silicon Wafers ◽  
Polishing Process ◽  
Model Based ◽  
Polishing Pad ◽  
Experimental Analyses ◽  
Polishing Pads ◽  
Polishing Pressure

In recent years, the achievement of further high flatness of workpiece edge shape is strongly required in mirror finishing. Especially, the edge roll off of silicon wafers as the substrates of semiconductor devices is demanded to decrease in the polishing process for raising the yield of IC chips. Many theoretical and experimental analyses for the edge roll off generation have been already done to meet the demand. The analyses, however, cannot fully account for the obtained edge shape in actual polishing. Concretely, the influence of the polishing pressure as one of the key polishing conditions on the edge roll off has not been clarified. In this study, the influence of the polishing pressure on the edge shape was investigated by the polishing experiments and the edge roll off generation analyses using the model based on the viscoelasticity of the polishing pad, which was proposed in the previous study. And it was revealed that an appropriate polishing pressure is needed to be set for achieving high flatness of workpiece edge shape with the consideration of the properties of applied polishing pads.

scholarly journals Numerical and Experimental Analyses on the Temperature Distribution in the Dental Implant Preparation Area when Using a Surgical Guide

2016 ◽  
Vol 27 (1) ◽  
pp. 42-51 ◽  
Author(s):  
Yun-feng Liu ◽  
Jian-lei Wu ◽  
Jian-xing Zhang ◽  
Wei Peng ◽  
Wen-qing Liao
Keyword(s):  
Temperature Distribution ◽  
Dental Implant ◽  
Surgical Guide ◽  
Experimental Analyses
Sign in / Sign up

Export Citation Format

Share Document