New printed slot antennas with etched SIR components in the ground plane

2021 ◽  
pp. 1-19
Author(s):  
Yaqeen Sabah Mezaal
Keyword(s):  
Ground Plane ◽  
Slot Antennas

Effects of ground plane dimensions on patterns radiated by slot antennas

2019 ◽  
Vol 106 (9) ◽  
pp. 1295-1319
Author(s):  
S. Adeniyi Adekola ◽  
K. Akinwale Amusa
Keyword(s):  
Ground Plane ◽  
Slot Antennas

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.

scholarly journals Harmonic Suppressed Slot Antennas Using Rectangular/Circular Defected Ground Structures

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Mohammad Saeid Ghaffarian ◽  
Gholamreza Moradi ◽  
Reza Zaker
Keyword(s):  
Ground Plane ◽  
Reflection Coefficients ◽  
Harmonic Suppression ◽  
Radiation Patterns ◽  
Harmonic Frequency ◽  
Slot Antennas ◽  
Third Harmonic ◽  
The Third ◽  
Defected Ground Structures ◽  
Ground Structures

Two wide rectangle-shaped microstrip-fed 2.6-GHz slot antennas using defected ground structures (DGSs) with a low design complexity are proposed to achieve wideband harmonic suppression. To accomplish this, two rectangular DGSs (RDGSs) in the first antenna and two circular DGSs (CDGSs) in the second one with various dimensions are etched into the ground plane, which could have a wideband-stop characteristic. Simulated and measured reflection coefficients indicate that the two proposed structures effectively suppress the second and third harmonics up to 23 dB between 3.5 and 10.5 GHz with a maximum ripple of 2.4 dB. In addition, the radiation patterns and peak gains of the antennas can be suppressed at least 17 dB and 7.1 dBi, respectively, at the third harmonic frequency of 7.86 GHz.

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