Miniaturization and dual-banding of an elevated slotted patch antenna using the novel dual-reverse-arrow fractal

2017 ◽  
Vol 27 (5) ◽  
pp. e21085 ◽  
Author(s):  
Hadi Soleimani ◽  
Homayoon Oraizi
Keyword(s):  
Patch Antenna ◽  
The Novel

scholarly journals Side lobe reduction in array antenna by using novel design of EBG

2020 ◽  
Vol 10 (1) ◽  
pp. 308
Author(s):  
Muhannad Kaml Abdulhameed ◽  
M. S. Mohamad Isa ◽  
I. M. Ibrahim ◽  
Z. Zakaria ◽  
Mowafak K. Mohsen ◽  
...  
Keyword(s):  
Surface Waves ◽  
Band Gap ◽  
Patch Antenna ◽  
Satellite Communications ◽  
Side Lobe ◽  
Good Choice ◽  
The Novel ◽  
Unit Cells ◽  
Novel Design ◽  
Triple Band

<p>A novel design of EBG is used to replace the mushroom like EBG for surrounding the array patch antenna. In order to improve its radiation performances, Electromagnetic band stop for reducing the surface waves effects is presented. The novel design of Triple Side Slotted EBG (TSSEBG) showed an improvement in the antenna efficiency, directivity and gain as compared to the reference antenna without using EBG, due to reduce the surface waves effects which leads to decrease the side lobes. TSSEBG has been introduced by some modifications in conventional mushroom-like EBG structure. Reducing the complexity was achieved by reducing the number of unit cells and vias, in case of used TSSEBG instead of mushroom like EBG. Additionally, the TSSEBG provided triple band gap compared with mushroom like EBG structure which had only one band gap frequency at 6 GHz. The placement of TSSEBG is a flexible structure which provides a good choice in the antenna applications. The simulation results of array patch antenna with and without mushroom like EBG and TSSEBG are arranged in Table 1. This structure has vast applications in satellite communications.</p>

scholarly journals Ultrawideband Harmonic Suppression in Microstrip Patch Antenna Using Novel Defected Ground Structures

2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Jun Fan ◽  
Jiangchuan Lin ◽  
Feng Qin ◽  
Jinliang Cai ◽  
Mingxu Kan
Keyword(s):  
Patch Antenna ◽  
Higher Order ◽  
Microstrip Patch Antenna ◽  
Harmonic Suppression ◽  
The Novel ◽  
Defected Ground Structure ◽  
Feed Line ◽  
Microstrip Patch ◽  
Higher Order Modes ◽  
Working Frequency

Suppressing higher-order modes up to sixth harmonics of the fundamental working frequency in a single-layer microstrip line-fed patch antenna has been successfully demonstrated. Higher-order modes of the antenna are suppressed by simultaneously employing a circular head open stub connected to the feed line and a novel defected ground structure (DGS) beneath the feed line. The filtering property of the antenna has been improved by the novel DGS significantly. The role played by the novel DGS is carefully analyzed, and the effect of some key parameters of DGS is further discussed. A microstrip patch antenna with the working frequency 3.13 GHz (fc) is designed and manufactured. The designed antenna possesses an ultrawideband harmonic suppression capability ranging from 2fc to 6fc. More importantly, the area occupied by the novel DGS is decreased by 41% compared to the earlier design.

The novel steroidal glycoside from the dried bulb of Allium Macrostemon Bunge inhibits platelet activation

2010 ◽  
Vol 34 (8) ◽  
pp. S33-S33
Author(s):  
Wenchao Ou ◽  
Haifeng Chen ◽  
Yun Zhong ◽  
Benrong Liu ◽  
Keji Chen
Keyword(s):  
Platelet Activation ◽  
The Novel ◽  
Steroidal Glycoside ◽  
Allium Macrostemon
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