Wideband circularly polarized array antenna based on weakly coupled sequential phase feed network

2021 ◽  
Author(s):  
Zhi‐Hao Mu ◽  
Chang‐Xing Chen ◽  
Jing‐Nan Ma ◽  
Ying‐Juan Zhao ◽  
Qiang Chen
Keyword(s):  
Array Antenna ◽  
Circularly Polarized ◽  
Weakly Coupled ◽  
Feed Network ◽  
Sequential Phase

Wideband Compact Circularly Polarized Sequentially Rotated Array Antenna With Sequential-Phase Feed Network

2017 ◽  
Vol 16 ◽  
pp. 3176-3179 ◽  
Author(s):  
Saeid Mohammadi-Asl ◽  
Javad Nourinia ◽  
Changiz Ghobadi ◽  
Maryam Majidzadeh
Keyword(s):  
Array Antenna ◽  
Circularly Polarized ◽  
Feed Network ◽  
Sequential Phase

scholarly journals Series-Fed Microstrip Array Antenna with Circular Polarization

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Tuan-Yung Han
Keyword(s):  
Circular Polarization ◽  
Simulated Data ◽  
Axial Ratio ◽  
Array Element ◽  
Array Antenna ◽  
Antenna Design ◽  
Circularly Polarized ◽  
Feed Network ◽  
Microstrip Array ◽  
Microstrip Array Antenna

This study proposes a novel 2 × 2 array antenna design with broadband and circularly-polarized (CP) operation. The proposed design uses a simple series-fed network to increase the CP bandwidth without requiring one-by-one adjustment of each array element or a complex feed network. Selecting the appropriate spacing between each array element allows the proposed array antenna to generate CP radiation with a low axial ratio. Experimental results based on a prototype show that this 2 × 2 microstrip array antenna achieves a wide 3 dB axial ratio bandwidth of more than 10%. Simulated data are also provided to confirm the measured results.

Circular polarization realization in array antennas by a modified sequential phase feeding mechanism of linearly polarized elements

2019 ◽  
Vol 11 (7) ◽  
pp. 729-738
Author(s):  
A. Haghshenas ◽  
CH. Ghobadi ◽  
J. Nourinia ◽  
M. Majidzadeh ◽  
S. Mohammadi-Asl
Keyword(s):  
Ground Plane ◽  
Slot Antennas ◽  
Circularly Polarized ◽  
Array Antennas ◽  
Four Corners ◽  
Linearly Polarized ◽  
Feed Network ◽  
Array Structures ◽  
And Performance ◽  
Sequential Phase

AbstractNovel designs of a circularly polarized 2 × 2 and 4 × 4 slot array antennas (CPSAAs) are proposed. Sequential phase feed network composed of a section of 270° and four strips is utilized to feed the array structures. Array elements are simple linearly polarized wide slot antennas (WSAs) composed of simple radiating patches with truncation on four corners and slotted ground plane on substrate backside. Each WSA operates over the UWB frequency band of 3.1–10.6 GHz. When the WSAs are arranged in the form of 2 × 2 and 4 × 4 CPSAAs, frequency bands of 3–13.1 and 1.4–12.3 GHz are covered, respectively. More importantly, CP is generated at 4.5–8 and 4.6–8.8 GHz for 2 × 2 and 4 × 4 CPSAAs, respectively. This is while; the WSAs are linearly polarized elements. Higher gain values and wider bandwidths are obtained with respect to single WSA. Design process and performance analysis of the single and array antennas are discussed through the paper.

Design and parametric analysis of a planar array antenna for circular polarization

2015 ◽  
Vol 8 (6) ◽  
pp. 921-929 ◽  
Author(s):  
Muhammad Asad Rahman ◽  
Quazi Delwar Hossain ◽  
Md. Azad Hossain ◽  
Eisuke Nishiyama ◽  
Ichihiko Toyoda
Keyword(s):  
Circular Polarization ◽  
Array Antenna ◽  
Design System ◽  
Impedance Bandwidth ◽  
Circularly Polarized ◽  
Feed Line ◽  
Linearly Polarized ◽  
Planar Array ◽  
Feed Network ◽  
Four Square

A new circularly polarized planar array antenna using linearly polarized microstrip patches is designed and optimized for X-band wireless communication applications. Four square patch elements with feed network are used to design the circularly polarized array antenna. The feed network consists of microstrip lines on the obverse side of the dielectric substrate and slot line on the reverse side of the substrate. Both-sided MIC technology is successfully employed to apply its inherent advantages in the design process of the array structure. The unequal feed line is used to create 90° phase difference between the linearly polarized patches. Therefore, the circular polarization is realized by the combination of linearly polarized patches and unequal feed line. Characteristics of the proposed array are investigated by using two electromagnetic (EM) simulators: advanced design system and EMPro. The −10 dB impedance bandwidth of the antenna is around 5%. The 3 dB axial ratio bandwidth of 1.48% is obtained. The design of the proposed antenna along with parametric study is presented and discussed.

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