scholarly journals New Antenna Array Architectures for Satellite Communications

10.5772/22487 ◽  
2011 ◽  
Author(s):  
Miguel Alejandro Salas Natera ◽  
Andrs Garca ◽  
Jonathan Mora ◽  
Jos Manuel ◽  
Pablo Padilla De La Torre ◽  
...  
Keyword(s):  
Antenna Array ◽  
Satellite Communications

scholarly journals Design of a Small-Size Broadband Circularly Polarized Microstrip Antenna Array

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Pingyuan Zhou ◽  
Zhuo Zhang ◽  
Mang He ◽  
Yihang Hao ◽  
Chuanfang Zhang
Keyword(s):  
Reflection Coefficient ◽  
Antenna Array ◽  
Patch Antenna ◽  
Microstrip Antenna ◽  
Axial Ratio ◽  
Satellite Communications ◽  
Lateral Size ◽  
Circularly Polarized ◽  
Feeding Technique ◽  
Microstrip Antenna Array

A small-size 2×2 broadband circularly polarized microstrip antenna array is proposed in this article. The array has four broadband dual-feed U-slot patch antenna elements with circular polarization, and the sequential feeding technique is used to further enhance the 3 dB axial ratio bandwidth. The lateral size of the fabricated array is as small as 1.33λ0×1.33λ0, and the profile is only 0.04λ0. Measured results show that the overlapped −10 dB reflection coefficient and the 3 dB AR bandwidth is 53%, and the variation of the measured realized gain is less than 1 dB for S-band satellite communications (1.98–2.2 GHz).

scholarly journals Low-Profile Dual Circularly Polarized Antenna Array for Satellite Communications in the X Band

2012 ◽  
Vol 60 (5) ◽  
pp. 2276-2284 ◽  
Author(s):  
Andrés Garcia-Aguilar ◽  
José-Manuel Inclan-Alonso ◽  
Lucía Vigil-Herrero ◽  
José-Manuel Fernandez-Gonzalez ◽  
Manuel Sierra-Perez
Keyword(s):  
Antenna Array ◽  
Satellite Communications ◽  
Circularly Polarized ◽  
Low Profile ◽  
X Band

scholarly journals Antenna array with switching scanning in elevation plane

2021 ◽  
Vol 24 (3) ◽  
pp. 100-106
Author(s):  
Yuri G. Pasternak ◽  
Vladimir A. Pendyurin ◽  
Kirill S. Safonov
Keyword(s):  
Antenna Array ◽  
Antenna Arrays ◽  
Satellite Communication ◽  
Satellite Communications ◽  
Slot Antenna ◽  
The Arctic ◽  
Waveguide Slot ◽  
Luneburg Lens ◽  
Slotted Waveguide ◽  
Scanning Sector

It is known that the most reliable communication in hard-to-reach places such as the Arctic, Tundra, Taiga is satellite communication [1-5]. Therefore, for satellite communications, it is necessary to develop your own antenna arrays. This article discusses a waveguide-slot antenna array with a Luneburg lens for a mobile satellite communications terminal, which provides a continuous and stable signal. This antenna operates in the 10.9 to 14.5 GHz frequency range. Possesses vertical polarization. The overall dimensions of the antenna array are: diameter of the diagram-forming lens 256 mm (thickness 5 mm, material FLAN 2.8 (epsilon 2.8, tangent delta 0.0015)); waveguide length 600 mm (internal section 10.5 mm by 5 mm, filling FLAN 2.8). Slotted waveguide antennas and lens are made of standard FLAN 2.8 material (epsilon 2.8, tangent delta 0.0015) 5mm thick, foiled on both sides. There are 17 coaxial cables to the HF switch (equal lengths are not required), the scanning step in elevation is 5 degrees. When using 54 waveguide-slot antennas and 18 switch inputs, a scanning sector in elevation of 90 degrees is provided. All the nodes were pre-modeled separately a cylindrical Luneburg lens with suitable waveguides, excited by slits; slotted waveguide antennas; coaxial-waveguide transitions.

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