scholarly journals A parasitic surface based wide beam width patch antenna

AIP Advances ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 115320
Author(s):  
Qinlong Li ◽  
Yeqing Yin ◽  
Xiaoming Chen
Keyword(s):  
Patch Antenna ◽  
Beam Width ◽  
Wide Beam

Design of the Ka-Band Satellite Antenna by Parallel Differential Evolution

2014 ◽  
Vol 556-562 ◽  
pp. 2194-2197 ◽  
Author(s):  
Jin Cui Guo ◽  
Xiao Qiu Liu ◽  
Wei Zhang ◽  
Bin Quan He
Keyword(s):  
Differential Evolution ◽  
Circular Polarization ◽  
Method Of Moments ◽  
Beam Width ◽  
Wide Beam ◽  
Satellite Antenna ◽  
Ka Band ◽  
Left Hand ◽  
Computing Platform

This paper designs a Ka-Band satellite antenna using parallel differential evolution (DE). The antenna is of wide beam-width and left hand circular polarization (LHCP). The electromagnetic numerical value is calculated by the improved software NEC2 based on the method of moments. The parallel differential evolution computing platform consists of some computers and MPI is used as the messaging protocol among computers. The single-arm Ka-Band antenna with 8-segments designed in this method has obtained very good performance including gains, axial ratios and VSWRs in a shorter period.

scholarly journals Design and Development of Circular Polarized Conformal Microstrip patch Antenna

2019 ◽  
Vol 9 (2S3) ◽  
pp. 106-109
Keyword(s):  
Parametric Study ◽  
Patch Antenna ◽  
Beam Width ◽  
Conformal Structure ◽  
Microstrip Patch Antenna ◽  
Design And Development ◽  
Conformal Antenna ◽  
Microstrip Patch ◽  
Half Power ◽  
Microstrip Feed

This paper presents broadband circular polarized conformal antenna with a square patch for on-board applications. The substrate is located in between patch and the ground. A novel Circular polarized square patch with microstrip feed with two truncated corners with conformal structure is designed. Using a parametric study on the effect of the position of feed, the antenna parameters VSWR bandwidth, half power beam width and polarization of antenna are analysed. Finally fabrication of conformal square patch on 2.2 dialectic substrate and measured results are discussed.

scholarly journals Study Effect the Shear Spacing and Width of Beam on Behavour of Reinforced Concrete Wide Beams

2021 ◽  
Vol 14 (1) ◽  
pp. 115-129
Author(s):  
Mustafa Joad ◽  
Ali L. Abass
Keyword(s):  
Experimental Study ◽  
Reinforced Concrete ◽  
Concrete Beams ◽  
Beam Width ◽  
Reinforced Concrete Beams ◽  
Shear Reinforcement ◽  
Shear Cracks ◽  
Wide Beam ◽  
Average Spacing ◽  
Wide Beams

This paper presented an experimental study of the behaviour of wide reinforced concrete beams with different shear spacing and beam width. Eight specimens in two groups, the group one contains four specimens with the dimensions of (200x500x1600mm) and shear reinforcement spacing (d/2, 0.65d, 3/4d and 1.0d), the group two contains four specimens with the dimensions of (200x600x1600mm) and shear reinforcement spacing (d/2, 0.55d, 3/4d and 1.0d), Variables studied in this study shear reinforcement spacing and width of wide beam, the increasing of shear reinforcement spacing gives close results in RC wide beam, increased shear reinforcement spacing decreased the ultimate loud by 6.6% and when increasing width of beam the ultimate loud decreased by 9.5%, The ultimate deflection decreased by 16.5% and when increasing width of beam decreased by 7.2 %,The number of flexural cracks was equal in all beams, when increasing width of beam the number of flexural crack increased by 2 cracks, The average spacing between shear cracks decreased by 7%, when increasing width of beam average spacing between shear cracks decreased by 19%.

scholarly journals 79-GHz Wide-Beam Microstrip Patch Antenna and Antenna Array for Millimeter-Wave Applications

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 200823-200833
Author(s):  
Guan-Ren Su ◽  
Eric S. Li ◽  
Ting-Wei Kuo ◽  
Huayan Jin ◽  
Yi-Chyun Chiang ◽  
...  
Keyword(s):  
Antenna Array ◽  
Millimeter Wave ◽  
Patch Antenna ◽  
Microstrip Patch Antenna ◽  
Wide Beam ◽  
Microstrip Patch
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