Topology optimisation of the discrete structures with the minimum growing ground structure method

2018 ◽  
Vol 9 (1) ◽  
pp. 38 ◽  
Author(s):  
Ali Ghoddosian ◽  
Mojtaba Riyahi Vezvari ◽  
Mojtaba Sheikhi Azqandi ◽  
Mohammad Amin Karimi
Keyword(s):  
Topology Optimisation ◽  
Ground Structure ◽  
Ground Structure Method ◽  
Discrete Structures

Topology optimisation of the discrete structures with the minimum growing ground structure method

2018 ◽  
Vol 9 (1) ◽  
pp. 38
Author(s):  
Ali Ghoddosian ◽  
Mojtaba Riyahi Vezvari ◽  
Mohammad Amin Karimi ◽  
Mojtaba Sheikhi Azqandi
Keyword(s):  
Topology Optimisation ◽  
Ground Structure ◽  
Ground Structure Method ◽  
Discrete Structures

scholarly journals Designing Franklin’s Microstrip Antenna with Defected Ground Structure at MMwave Frequency

2021 ◽  
pp. 559-565
Author(s):  
Ahmad Firdausi ◽  
◽  
I Made Dian Wahyudi ◽  
Mudrik Alaydrus
Keyword(s):  
Microstrip Antenna ◽  
Data Access ◽  
Microstrip Antennas ◽  
Reflection Factor ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Ground Field ◽  
Bandwidth Enhancement ◽  
Ground Structure Method ◽  
Gain Enhancement

The development of telecommunication technology is very rapid at this time has entered into 4G technology. Soon, the 5G technology has a fast data access speed of at least 1 Gbps. To support 5G technology is carried out in-depth research, especially in 5G antennas. This study aims to increase the bandwidth of Franklin's five array microstrip antennas using the DGS (Defected Ground Structure) method for 5G antenna applications at an operating frequency of 28 GHz. The research was conducted by doing rectangular defects in the ground field. This research produced an enhanced bandwidth by 1.707 GHz from 1.196 GHz without DGS (Defected Ground Structure) to 2.9 GHz with DGS (Defected Ground Structure). It means a bandwidth enhancement of 142.47%. At the same time, the design achieved a gain enhancement of 141.7 %. Franklin's microstrip antenna output with DGS (Defected Ground Structure) method from the research simulation results are the bandwidth of 2.9 GHz, reflection factor of -52.95 dB, and Gain 11.80 dB. In comparison, the results of antenna measurements that have been fabricated produce bandwidth of 2 GHz, reflection factor -27.72 dB on frequency 26.6 GHz. The deviation between the simulation and measurement may result in inaccuracies during the fabrication process.

scholarly journals TOPOLOGY OPTIMIZATION OF FRAME STRUCTURES USING ESO METHOD AND GROUND STRUCTURE METHOD

2016 ◽  
Vol 81 (721) ◽  
pp. 547-553 ◽  
Author(s):  
Kenji KOSAKA ◽  
Shinya MATSUMOTO ◽  
Daiji FUJII
Keyword(s):  
Topology Optimization ◽  
Frame Structures ◽  
Ground Structure ◽  
Ground Structure Method

scholarly journals Topological design of pentamode lattice metamaterials using a ground structure method

2021 ◽  
Vol 202 ◽  
pp. 109523
Author(s):  
Zuyu Li ◽  
Zhen Luo ◽  
Lai-Chang Zhang ◽  
Chun-Hui Wang
Keyword(s):  
Ground Structure ◽  
Ground Structure Method ◽  
Topological Design

Material nonlinear topology optimization using the ground structure method with a discrete filtering scheme

2017 ◽  
Vol 55 (6) ◽  
pp. 2045-2072 ◽  
Author(s):  
Xiaojia Zhang ◽  
Adeildo S. Ramos ◽  
Glaucio H. Paulino
Keyword(s):  
Topology Optimization ◽  
Ground Structure ◽  
Ground Structure Method ◽  
Nonlinear Topology Optimization ◽  
Material Nonlinear

Topology Optimization for Stiffened Panels: A Ground Structure Method

2021 ◽  
Author(s):  
Jean-Francois Gamache ◽  
Aurelian Vadean ◽  
Nicolas Dodane ◽  
Sofiane Achiche
Keyword(s):  
Topology Optimization ◽  
Ground Structure ◽  
Stiffened Panels ◽  
Ground Structure Method
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