Adaptive low profile array antennas for smart car antenna systems

2002 ◽  
Author(s):  
R. Kronberger ◽  
H. Lindenmeier ◽  
L. Reiter ◽  
J. Hopf
Keyword(s):  
Array Antennas ◽  
Low Profile ◽  
Antenna Systems

scholarly journals A Metasurface-Based Low-Profile Array Decoupling Technology to Enhance Isolation in MIMO Antenna Systems

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 125565-125575 ◽  
Author(s):  
Ziyang Wang ◽  
Chenglei Li ◽  
Qiong Wu ◽  
Yingzeng Yin
Keyword(s):  
Mimo Antenna ◽  
Low Profile ◽  
Antenna Systems

A DESIGN SOLUTION FOR COMPACT SLOTTED WAVEGUIDE ARRAY ANTENNAS BASED ON SIW TECHNOLOGY

2021 ◽  
pp. 22-29
Author(s):  
Viet
Keyword(s):  
Microwave Frequency ◽  
Array Antenna ◽  
Design Solution ◽  
Waveguide Array ◽  
Practical Applications ◽  
Array Antennas ◽  
Novel Approach ◽  
X Band ◽  
Slotted Waveguide ◽  
Antenna Systems

Slotted waveguide array antenna is a crucial structure in microwave frequency antennas with many applications in radar and communications systems. Previously, slotted waveguide array antenna systems mainly used metal materials. The study of slotted array antenna based on the waveguided with SIW (Substrate Integrated Waveguide) technology is a novel approach. The paper presents the results of researching, designing, and manufacturing waveguide slot array antenna with low SLL using SIW technology in X-band. The results will be an essential basis for selecting a design solution for slotted waveguide array antenna by SIW technology to replace traditional metal slot array antennas in practical applications in X band radar antenna systems.

Ultrawideband Hybrid EBG/Ferrite Ground Plane for Low-Profile Array Antennas

2007 ◽  
Vol 55 (1) ◽  
pp. 4-12 ◽  
Author(s):  
Jodie M. Bell ◽  
Magdy F. Iskander ◽  
J. J. Lee
Keyword(s):  
Ground Plane ◽  
Array Antennas ◽  
Low Profile

scholarly journals Antenna Array Based on Fabry–Perot Cavity with Mechanoelectrical Beam Steering

2021 ◽  
Vol 24 (5) ◽  
pp. 36-49
Author(s):  
Y. A. Litinskaya ◽  
S. V. Polenga ◽  
Y. P. Salomatov
Keyword(s):  
Antenna Array ◽  
Satellite Communication ◽  
Beam Steering ◽  
Fdtd Method ◽  
Scanning Angle ◽  
Low Profile ◽  
Fabry Perot ◽  
Directional Characteristics ◽  
Mobile Satellite ◽  
Antenna Systems

Introduction. Introduction. Low-profile effective antenna systems (AS) with maintained directional characteristics in a wide sector of scanning angles are required for satellite communication at mobile objects. This article investigates the directional characteristics of a subarray based on a Fabry–Perot cavity and an antenna array with mechanoelectrical beam steering.Aim. To investigate a Fabry–Perot based antenna array with mechanoelectrical beam steering and to estimate its gain and directivity at different scanning angles.Materials and methods. Computer simulations were carried out using the finite element method (FEM), finite difference time domain (FDTD) method and template based post-processing.Results. A subarray based on a Fabry–Perot cavity for an antenna array with mechanoelectrical beam steering was simulated. The efficiency of the subarray comprised at least 65 % in the 11.9…12.5 GHz frequency band. An antenna array based on a Fabry–Perot cavity with mechanoelectrical beam steering was developed and investigated. The calculated characteristics of the developed antenna array agreed well with those obtained experimentally. The gain degradation did not exceed 2.5 dB in the 0…70° scanning angle range. The advantages of using antenna elements based on a Fabry–Perot cavity and developing on their basis mobile satellite antenna systems with wide-angle scanning are noted.Conclusion. The use of a radiator based on a Fabry–Perot cavity and the development on it basis an antenna array with mechanoelectrical beam steering provides an antenna efficiency of no less than 0.5 with a gain degradation of no more than 2.5 dB in the scanning angle range 0…70° from 11.9 to 12.5 GHz.

scholarly journals Reduction of Surface Waves in Arrays using Uni-Planar EBG

2019 ◽  
Vol 8 (3) ◽  
pp. 8065-8069
Keyword(s):  
Mutual Coupling ◽  
Unit Cell ◽  
Harmonic Suppression ◽  
Planar Antennas ◽  
Effective Technique ◽  
Dispersion Diagram ◽  
Electromagnetic Band Gap ◽  
Array Antennas ◽  
Low Profile ◽  
Array Performance

Electromagnetic band gap (EBG) structures can be treated as sporadic arrangement of dielectrics. These structures will aid in the coupling reduction in arrays. In this paper, for reducing coupling between array antennas, a new arrangement of EBG structures is presented. The antenna resonates at 5.8GHz, used for wireless requirement. Here 5 × 2 EBG structures are used to reduce mutual coupling more than 20 dB. The antenna substrate dimensions are 36 mm × 68 mm × 1.6 mm. Also, the dispersion diagram was used to design EBG unit cell. In this, a uniplanar EBG configuration which is easy to fabricate without the use of vias is designed for antennas. Their use in coupling reduction of planar antennas and low-profile antenna applications is explored through an effective technique, because the information required is the dispersion diagram and reflection phase of the unit cell. Diff erent Uniplanar-EBGs are used for optimizing current distribution on the antennas, decreasing the coupling between elements and harmonic suppression. As a result, the antenna array performance is improved and minimum coupling is less than -20 dB by using this EBG structure

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