Achievements on circularly polarized horn-fed metallic electromagnetic band gap antenna design

2013 ◽  
Vol 5 (4) ◽  
pp. 507-520 ◽  
Author(s):  
Eric Arnaud ◽  
Régis Chantalat ◽  
Thierry Monediere ◽  
Emmanuel Rodes ◽  
Marc Thevenot
Keyword(s):  
Band Gap ◽  
Axial Ratio ◽  
Experimental Results ◽  
Antenna Design ◽  
Space Applications ◽  
Electromagnetic Band Gap ◽  
Ka Band ◽  
Circularly Polarized ◽  
Comprehensive Study

This paper presents a comprehensive study on the design of a 30 GHz, circularly polarized (CP), single horn-fed, metallic electromagnetic band gap (EBG) antenna. Three different approaches have been studied in order to create a 20 dBi antenna with an axial ratio (AR) lower than 1 dB over a 500 MHz bandwidth. Based on theoretical and experimental results, a conclusion is given on the best solution to obtain the desired characteristics. Perspectives and guidelines are also given for the design of multi-feed EBG antenna as a reflector focal feed for Ka-Band Space Applications.

scholarly journals A Ka-Band Circular Polarized Waveguide Slot Antenna with a Cross Iris

2020 ◽  
Vol 10 (19) ◽  
pp. 6994
Author(s):  
Sung-Joon Yoon ◽  
Jae-Hoon Choi
Keyword(s):  
Reflection Coefficient ◽  
Impedance Matching ◽  
Axial Ratio ◽  
Experimental Results ◽  
Slot Antenna ◽  
Ka Band ◽  
Circularly Polarized ◽  
Waveguide Slot ◽  
Waveguide Slot Antenna

A Ka-band circularly polarized (CP) waveguide slot antenna with a cross iris is proposed. To achieve the CP characteristic (LHCP) in the antenna, a hexagonal shaped cavity is used. The impedance matching is improved by adjusting the sizes of the hexagonal cavity and a rectangular matching cavity. To enhance the axial ratio bandwidth, a cross iris is used with two arms of different lengths. From experimental results, the proposed antenna has a 3 dB axial ratio bandwidth of 6810 MHz (31.72 GHz–38.53 GHz). The −10 dB reflection coefficient bandwidth of the proposed antenna ranges from 31.51 GHz to 39.21 GHz (7700 MHz).

scholarly journals Dual-Frequency Circularly Polarized Truncated Square Aperture Patch Antenna with Slant Strip and L-Shaped Slot for WLAN Applications

2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
Sorana Niyamanon ◽  
Rewat Senathong ◽  
Chuwong Phongcharoenpanich
Keyword(s):  
Radiation Pattern ◽  
Patch Antenna ◽  
Axial Ratio ◽  
Experimental Results ◽  
Antenna Design ◽  
Impedance Bandwidth ◽  
Dual Frequency ◽  
Circularly Polarized ◽  
Good Agreement

This research proposes a dual-frequency circularly polarized truncated square aperture patch antenna with slant stripline and L-shaped slot for WLAN applications. In the antenna design, the parameters were optimized and the WLAN-enabled dual-frequency (2.4 and 5.8 GHz) antenna was realized. Simulations were subsequently carried out for the impedance bandwidth (S11) < −10 dB, axial ratio (AR) ≤ 3 dB, optimal gain, and bidirectional radiation pattern. To validate, an antenna prototype was fabricated and the experiments were undertaken. The simulated and experimental results are in good agreement. In essence, the proposed WLAN-enabled dual-frequency circularly polarized antenna is most suited for applications in the vertically and horizontally elongated areas, including in the tunnel, train carriage, and buildings.

A low-profile circularly polarized microstrip antenna using elliptical electromagnetic band gap structure

2021 ◽  
pp. 1-10
Author(s):  
Shilpee Patil ◽  
Alka Verma ◽  
Anil Kumar Singh ◽  
Binod Kumar Kanaujia ◽  
Suresh Kumar
Keyword(s):  
Band Gap ◽  
Communication Systems ◽  
Return Loss ◽  
Ground Plane ◽  
Axial Ratio ◽  
Impedance Bandwidth ◽  
Electromagnetic Band Gap ◽  
Circularly Polarized ◽  
Low Profile ◽  
Band Gap Structure

Abstract This study investigates a low-profile circularly polarized (CP) antenna using coplanar waveguide feeding. Rectangular-shaped slots and an inverted L-shaped slit are entrenched into the ground plane to enhance the impedance bandwidth of the antenna. Furthermore, the antenna is implemented with six elliptical electromagnetic band gap structures on its substrate to enhance the −10 dB return loss bandwidth and also to generate CP waves. The experimental and theoretical results closely match each other and indicate that a simple and compact design antenna with dimensions of 0.317λ0 × 0.317λ0 × 0.023λ0(λ0 is the operating wavelength at 4.74 GHz in free space) achieves 36.9% (3.91–5.68 GHz) of the −10 dB return loss bandwidth and 9.98% (4.09–4.52 GHz) of the 3-dB axial ratio bandwidth, thus making it a favorable entrant for radio altimeter and wireless avionics infra-communication systems.

scholarly journals Ka-band planar slotted waveguide array based on groove gap waveguide technology with a glide-symmetric holey metasurface

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Luis Fernando Herrán ◽  
Astrid Algaba Brazalez ◽  
Eva Rajo-Iglesias
Keyword(s):  
Band Gap ◽  
Experimental Results ◽  
Waveguide Array ◽  
Electromagnetic Band Gap ◽  
Ka Band ◽  
Planar Arrays ◽  
Slot Arrays ◽  
Feed Network ◽  
Slotted Waveguide ◽  
Band Gap Structure

AbstractThe design of a planar slot array in groove gap waveguide technology implemented by glide-symmetric holes as Electromagnetic Band Gap structure is here presented. Despite the advantages of using holes instead of pins in terms of manufacturing simplicity and cost,the larger size of the holes compared to pins needs to be considered when designing slot arrays without grating lobes. A 1 to 4 corporate feed network is designed using this technology as well. Corrugations are included to further reduce the grating lobes. Experimental results support the viability of the proposed concept for designing glide-symmetric planar arrays of any size.

scholarly journals CPW-fed circularly-polarized antenna array with high front-to-back ratio and low-profile

Open Physics ◽  
2018 ◽  
Vol 16 (1) ◽  
pp. 651-655 ◽  
Author(s):  
Yilin Liu ◽  
Kama Huang
Keyword(s):  
Antenna Array ◽  
Coplanar Waveguide ◽  
Ground Plane ◽  
Axial Ratio ◽  
Antenna Design ◽  
Impedance Bandwidth ◽  
Feeding Method ◽  
Circularly Polarized ◽  
Low Profile ◽  
Novel Design

Abstract A novel design of a coplanar waveguide (CPW) feed antenna array with circular polarization (CP) and a high front-to-back ratio is described. The proposed CP array is achieved by using a compact CPW–slotline transition network etched in the ground plane. The measured results show that this kind of feeding method can improve the impedance bandwidth, as well as the axial ratio bandwidth of the CP antenna array and provide adequate gain. The proposed array can achieve a 6.08% impedance bandwidth and a 4.10% CP bandwidth. Details of the antenna design and experimental results are presented and discussed.

scholarly journals Design of Circularly Polarized Triple-Band Wearable Textile Antenna with Safe Low SAR for Human Health

Electronics ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 1366 ◽  
Author(s):  
Ashok Yadav ◽  
Vinod Kumar Singh ◽  
Pranay Yadav ◽  
Amit Kumar Beliya ◽  
Akash Kumar Bhoi ◽  
...  
Keyword(s):  
Microstrip Line ◽  
Radiation Effect ◽  
Axial Ratio ◽  
Antenna Design ◽  
Circularly Polarized ◽  
Frequency Bands ◽  
Textile Antenna ◽  
Peak Gain ◽  
Triple Band ◽  
Ku Band

In this manuscript, an antenna on textile (jeans) substrate is presented for the WLAN, C band and X/Ku band. This is a wearable textile antenna, which was formed on jeans fabric substrate to reduce surface-wave losses. The proposed antenna design consists of a patch and a defected ground. To energize the wearable textile antenna, a microstrip line feed technique is used in the design. The impedance band width of 23.37% (3.4–4.3 GHz), 56.48% (4.7–8.4 GHz) and 31.14% (10.3–14.1 GHz) frequency bands are observed, respectively. The axial ratio bandwidth (ARBW) of 10.10% (4.7–5.2 GHz), 4.95% (5.9–6.2 GHz) and 10.44% (11.8–13.1 GHz) frequency bands are observed, respectively. A peak gain of 4.85 dBi is analyzed at 4.1-GHz frequency during the measurement. The SAR value was calculated to observe the radiation effect and it was found that its utmost SAR value is 1.8418 W/kg and 1.919 W/kg at 5.2/5.5-GHz frequencies, which is less than 2 W/kg of 10 gm tissue. The parametric study is performed for the validation of the proper functioning of the antenna.

1D dielectric electromagnetic band gap (EBG) resonator antenna design

2004 ◽  
Vol 59 (3-4) ◽  
pp. 242-260
Author(s):  
Ludovic Leger ◽  
Cédric Serier ◽  
Régis Chantalat ◽  
Marc Thevenot ◽  
Thierry Monedière ◽  
...  
Keyword(s):  
Band Gap ◽  
Antenna Design ◽  
Electromagnetic Band Gap
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