scholarly journals Sunflower Array Antenna with Adjustable Density Taper

2009 ◽  
Vol 2009 ◽  
pp. 1-10 ◽  
Author(s):  
Maria Carolina Viganó ◽  
Giovanni Toso ◽  
Gerard Caille ◽  
Cyril Mangenot ◽  
Ioan E. Lager
Keyword(s):  
Voronoi Cell ◽  
Beam Pattern ◽  
Array Antenna ◽  
Spatial Density ◽  
Pencil Beam ◽  
Sunflower Seeds ◽  
Sidelobe Level ◽  
Satellite Antenna ◽  
Rotationally Symmetric ◽  
Planar Array

A deterministic procedure to design a nonperiodic planar array radiating a rotationally symmetric pencil beam pattern with an adjustable sidelobe level is proposed. The elements positions are derived by modifying the peculiar locations of the sunflower seeds in such a way that the corresponding spatial density fits a Taylor amplitude tapering law which guarantees the pattern requirements in terms of beamwidth and sidelobe level. Different configurations, based on a Voronoi cell spatial tessellation of the radiative aperture, are presented, having as a benchmark the requirements for a typical multibeam satellite antenna.

scholarly journals Position Tolerance Design Method for Array Antenna in Internet of Things

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Congsi Wang ◽  
Shuai Yuan ◽  
Xiaodong Yang ◽  
Wei Gao ◽  
Cheng Zhu ◽  
...  
Keyword(s):  
Internet Of Things ◽  
High Performance ◽  
Design Method ◽  
Array Antenna ◽  
Antenna Element ◽  
Sidelobe Level ◽  
Analysis Theory ◽  
Planar Array ◽  
Gain Loss ◽  
Novel Design

The position error of array antenna significantly deteriorates the gain and sidelobe of the array, which seriously hinders the realization of high performance of communication antenna for Internet of Things (IoT). Based on the sensitivity analysis theory, the sensitivity of the array radiation field with respect to the position of the antenna element is derived. Besides, a novel design method of position tolerance for array antenna is proposed and applied to a 20×20 planar array. Compared with the array designed by traditional method, the gain loss is basically the same (being 0.5 dB), while the peak sidelobe level is lowered by 1.937 dB (φ=0°)/1.586 dB (φ=90°). Besides, the uncertainty analysis results show that the newly designed array has a much higher chance to achieve the desired performance, which fully demonstrates the innovation and effectiveness of the new method.

scholarly journals SYNTHESIS OF DUAL BEAM PATTERN OF PLANAR ARRAY ANTENNA IN A RANGE OF AZIMUTH PLANE USING EVOLUTIONARY ALGORITHM

2016 ◽  
Vol 62 ◽  
pp. 65-70
Author(s):  
Debasis Mandal ◽  
Jyotirmay Tewary ◽  
Kalyan Sundar Kola ◽  
Ved Prakash Roy
Keyword(s):  
Evolutionary Algorithm ◽  
Beam Pattern ◽  
Array Antenna ◽  
Dual Beam ◽  
Planar Array

Planar array antenna using both-sided MIC's feeder circuits

2004 ◽  
Vol 87 (7) ◽  
pp. 23-30 ◽  
Author(s):  
Kozo Egashira ◽  
Eisuke Nishiyama ◽  
Masayoshi Aikawa
Keyword(s):  
Array Antenna ◽  
Planar Array
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