Influence Analysis of Circular Polarization Characteristics of Sequential Rotating Array Antenna

2020 ◽  
pp. 881-887
Author(s):  
Hui-Yong Zeng ◽  
Qin Zhang ◽  
Lin Geng ◽  
Bin-Feng Zong
Keyword(s):  
Circular Polarization ◽  
Array Antenna ◽  
Influence Analysis ◽  
Polarization Characteristics

scholarly journals Targeting Wideband Circular Polarization: An Efficient 2×2 Sequentially-Phase-Fed Rotated Array Antenna

2018 ◽  
Vol 27 (1) ◽  
pp. 79-84 ◽  
Author(s):  
S. Mohammadi-Asl ◽  
J. Nourinia ◽  
Ch. Ghobadi ◽  
M. Majidzadeh
Keyword(s):  
Circular Polarization ◽  
Array Antenna

Design of a circular polarization array antenna using triple feed structure

2014 ◽  
Author(s):  
Rubell Sen Goopta ◽  
Quazi Delwar Hossain ◽  
Md. Azad Hossain ◽  
Piyas Chowdhury
Keyword(s):  
Circular Polarization ◽  
Array Antenna

Mimo circular polarization array antenna with dual coupled 90° phased shift for point-to-point application

2015 ◽  
Vol 57 (4) ◽  
pp. 809-814 ◽  
Author(s):  
Mohd Khairul Azhar Nayan ◽  
Mohd Faizal Jamlos ◽  
M. A. Jamlos
Keyword(s):  
Circular Polarization ◽  
Array Antenna ◽  
Point To Point

scholarly journals Tunable square waveguide polarizer with irises and posts

2021 ◽  
Author(s):  
Stepan Piltyay
Keyword(s):  
Mathematical Model ◽  
Circular Polarization ◽  
Design Parameters ◽  
Adaptive Antenna ◽  
Radio Link ◽  
Engineering Systems ◽  
Polarization Signal ◽  
Fixed Orientation ◽  
Polarization Characteristics ◽  
Antenna Systems

Polarization signal processing is widely used in modern information and telecommunication systems for various purposes. Signal polarization processing is carried out in polarization-adaptive antenna systems. The key element of such systems is transformation devices for polarization processing. They perform the transformation of the types of polarization and separate the different types. The most commonly applied systems are the ones using a single circular polarization or two orthogonal circular polarizations simultaneously.The absence of the need for an accurate angle orientation between the transmitting and receiving antennas to establish communication is one of the basic advantages of this type of polarization. When using antenna systems with linear polarization, signal losses appear due to inconsistency in the orientation of the polarization planes of the transmitting and receiving antennas. This feature of circular polarization is important for satellite and many other telecommunications systems. In such systems it is difficult to maintain a fixed orientation of one antenna relative to the other. In addition, circular polarization is used to communicate with satellites orbiting the direction of the radio link. Regardless of antenna orientation, when using circular polarization, the received signal level is constant. These advantages explain why circular polarized antennas are widely used in radio engineering systems for various purposes. The paper presents the results of the development of a polarization device based on a square waveguide with two posts and two diaphragms in the frequency range from 7,7 to 8,5 GHz. The article contains the results of calculations using the developed mathematical model of the device. In addition, the results of modeling the device using the finite element method are presented for comparison. A comparison was made of the polarization characteristics and the match of the developed polarizer. The created mathematical model makes it possible to effectively analyze the characteristics when changing design parameters. These parameters include the size of the wall of the square waveguide, the heights of the diaphragms and pins, the distance between them, the thickness of the diaphragms and pins. The developed polarizer is suggested for the application in satellite telecommunication and radar systems.

scholarly journals A Wideband Circular Polarized Antenna using Coplanar Waveguide

2019 ◽  
Vol 8 (6S4) ◽  
pp. 587-589
Keyword(s):  
Circular Polarization ◽  
Coplanar Waveguide ◽  
Impedance Matching ◽  
Ground Plane ◽  
Axial Ratio ◽  
Impedance Bandwidth ◽  
Rectangular Slot ◽  
Feed Line ◽  
Polarization Characteristics ◽  
Orthogonal Phase

A wideband coplanar waveguide (CPW) antenna with circular polarization characteristics using modified ground slot is studied in this work. Proposed design incorporates a hexagonal slot instead of rectangular slot, accounting for enhanced impedance matching. This ground slot is energized by a 50Ω feed line, resulting in excitation of two orthogonal phase quadrature modes (even-odd modes). Thus, fulfilling the essential criteria required for realizing circular polarization. A narrow horizontal slit (lg) is embedded in the ground plane at immediate left of feed line, accounting for wideband characteristics. 10dB impedance bandwidth of proposed antenna extends from 2.65- 5.60 GHz, while 3dB axial ratio bandwidth extends from 3.90- 5.80 GHz. Hence, overlapping bandwidth of proposed antenna extends from 3.90 - 5.60 GHz. RHCP characteristics with monopole radiation pattern makes proposed antenna useful for WLAN, radio navigation and radiolocation applications.

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