scholarly journals Fully Metallic Reflectarray for the Ku-band Based on a 3D Architecture

2021 ◽  
Author(s):  
Jaime Velasco ◽  
Parellada-Serrano Ignacio ◽  
Molero Carlos
Keyword(s):  
Short Circuit ◽  
Ground Plane ◽  
Size Variation ◽  
Phase Behaviour ◽  
Waveguide Section ◽  
Back Ground ◽  
3D Architecture ◽  
Design And Manufacture ◽  
Phase Truncation ◽  
Ku Band

This document presents the design and manufacture of a reflectarray (RA) antenna for the Ku-band, based on a fully-metallic 3D architecture. The reflectarray unit cell is formed by a square-shaped waveguide section ended in a short circuit, that is the reflectarray back ground plane. Each cell has the ability of configuring the phase of its own reflected field by means of resonators perforated on the walls of the cell waveguide section. The resonator-based waveguide cell introduces the 3D character to the design. The geometry of the resonators and its size variation introduces the phase behaviour of each cell, conforming the radiation pattern of the reflectarray. This design explores the potential of phase value truncation (6 states and 2 states), and demonstrates that proper pattern results can be obtained with this phase truncation.

scholarly journals Fully Metallic Reflectarray for the Ku-Band Based on a 3D Architecture

Electronics ◽  
2021 ◽  
Vol 10 (21) ◽  
pp. 2648
Author(s):  
Jaime Velasco ◽  
Ignacio Parellada-Serrano ◽  
Carlos Molero
Keyword(s):  
Phase Behavior ◽  
Short Circuit ◽  
Ground Plane ◽  
Size Variation ◽  
Waveguide Section ◽  
Back Ground ◽  
3D Architecture ◽  
Design And Manufacture ◽  
Phase Truncation ◽  
Ku Band

This document presents the design and manufacture of a reflectarray (RA) antenna for the Ku-band that is based on a fully-metallic 3D architecture. The reflectarray unit cell is formed by a square-shaped waveguide section ending in a short circuit, which is the reflectarray back ground plane. Each cell has the ability of configuring the phase of its own reflected field by means of resonators perforated on the walls of the cell waveguide section. The resonator-based waveguide cell introduces the 3D character to the design. The geometry of the resonators and the size variation introduces the phase behavior of each cell, thus, conforming the radiation pattern of the reflectarray. This design explores the potential of phase value truncation (six states and two states) and demonstrates that proper pattern results can be obtained with this phase truncation.

scholarly journals A Broadband Conformal Phased Array Antenna on Spherical Surface

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Dan Sun ◽  
Rong Shen ◽  
Xuequan Yan
Keyword(s):  
Phased Array ◽  
Spherical Surface ◽  
Ground Plane ◽  
Array Antenna ◽  
Phased Array Antenna ◽  
Simulated Model ◽  
Conformal Array ◽  
Spherical Structure ◽  
Matching Performance ◽  
Ku Band

A Ku-band wideband conformal array antenna with13×19elements is presented in the paper. The array has a spherical structure, and its element is a proximity-coupled stacked patches antenna with a cavity-backed ground plane. The stacked patches and the cavity produce multiple coupled resonances, which enhance the bandwidth of the element extremely. A simulated model with the reasonable dimensions is framed with the coupling analyses, and the effective simulated results and good computing efficiency are obtained simultaneously. The measured results of the center embedded element in the whole array show a bandwidth exceeding 40%VSWR<2, which is close to the simulated matching performance.

scholarly journals A Circular Disc Microstrip Antenna with Dual Notch Band for GSM/Bluetooth and Extended UWB Applications

2018 ◽  
Vol 7 (2.16) ◽  
pp. 11
Author(s):  
Sanjeev Kumar ◽  
Ravi Kumar ◽  
Rajesh Kumar Vishwakarma
Keyword(s):  
Radiation Pattern ◽  
Microstrip Antenna ◽  
Ground Plane ◽  
Circular Disc ◽  
Ultra Wideband ◽  
Resonant Circuit ◽  
Frequency Range ◽  
Notch Band ◽  
Uwb Applications ◽  
Ku Band

A microstrip antenna with a circular disc design and modified ground is proposed in this paper. Circular shapes of different size have been slotted out from the radiating patch for achieving extended ultra wideband (UWB) with GSM/Bluetooth bands with maximum bandwidth of 17.7 GHz (0.88-18.6 GHz). Further, characteristic of dual notch band is achieved, when a combination of T and L-shaped slots are etched into the circular disc and ground plane respectively. Change in length of slots is controlling the notch band characteristics. The proposed antenna has rejection bandwidth of 1.3-2.2 GHz (LTE band), 3.2-3.9 GHz (WiMAX band) and 5.2-6.1 GHz (WLAN band) respectively. It covers the frequency range of 0.88-18.5 GHz with the VSWR of less than 2. Also, an equivalent parallel resonant circuit has been demonstrated for band notched frequencies of the designed antenna. The gain achieved by the proposed antenna is 6.27 dBi. This antenna has been designed, investigated and fabricated for GSM, Bluetooth, UWB, X and Ku band applications. The stable gain including H & E-plane radiation pattern with good directivity and omnidirectional behavior is achieved by the proposed antenna. Measured bandwidths are 0.5 GHz, 0.8 GHz, 1.1 GHz and 11.7 GHz respectively. 

scholarly journals Design of a Compact CPW-Fed Monopole Antenna With Asymmetrical Hexagonal Slot Loaded Ground Structure for C/X/Ku Band Applications

2020 ◽  
Vol 16 (1) ◽  
pp. 15-22
Author(s):  
Ajay Kumar Dwivedi ◽  
Brijesh Mishra ◽  
Vivek Singh ◽  
Pramod Narayan Tripathi ◽  
Ashutosh Kumar Singh
Keyword(s):  
High Frequency ◽  
Ground Plane ◽  
Directional Pattern ◽  
Ultra Wideband ◽  
Impedance Bandwidth ◽  
Ground Structure ◽  
High Frequency Structure Simulator ◽  
Performance Matrix ◽  
Novel Design ◽  
Ku Band

AbstractA novel design of ultra-wideband CPW-fed compact monopole patch antenna is presented in the article. The size of the antenna is 22 × 18 × 1.6 mm and it operates well over an ultra-wideband frequency range 4.86–13.66 GHz (simulated) and 4.93–13.54 GHz (measured) covering C, X and partial Ku band applications. The proposed design consists of a defected ground plane and U-shape radiating patch along with two square shape parasitic patches in order to achieve the ultra-wideband (UWB) operations. The performance matrix is validated through measured results that indicate the wide impedance bandwidth (93.2 %) with maximum gain of 4 dBi with nearly 95 % of maximum radiation efficiency; moreover, the 3D gain pattern manifests approximately omni-directional pattern of the proposed design. The prototype has been modelled using HFSS (High Frequency Structure Simulator-18) by ANSYS, fabricated and tested using vector network analyser E5071C.

Electronically tunable phase shifter with enhanced phase behaviour at Ku Band

2018 ◽  
Author(s):  
M. Taha El Khorassani ◽  
M.A. Vaquero ◽  
A. Palomares ◽  
J.F. Valenzuela-Valdés ◽  
P. Padilla ◽  
...  
Keyword(s):  
Phase Shifter ◽  
Phase Behaviour ◽  
Electronically Tunable ◽  
Ku Band

A Ku-Band Wideband Power Divider with Defected Ground Structure

2013 ◽  
Vol 385-386 ◽  
pp. 1292-1295
Author(s):  
Xu Han ◽  
Jian Hua Xu
Keyword(s):  
Insertion Loss ◽  
Return Loss ◽  
Ground Plane ◽  
Power Divider ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Power Split ◽  
Equal Power ◽  
Better Than ◽  
Ku Band

A planar power divider operating over the whole Ku-band is presented. The proposed device utilizes a T-microstrip junction combined with defected ground structure and an elliptical patch at the centre of the T-junction. An isolation resistor is connected across the slotted ground plane. The simulated results of the divider show equal power split, insertion loss is less than 0.3dB, return loss of all ports are better than 15dB, and isolation is better than 15dB over the whole Ku-band.

scholarly journals Single Feed Aperture-Coupled Wideband Dielectric Resonator Antenna with Circular Polarization for Ku-Band Applications

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Joshua M. Patin ◽  
Satish K. Sharma
Keyword(s):  
Circular Polarization ◽  
Dielectric Resonator ◽  
Ground Plane ◽  
Axial Ratio ◽  
Resonant Mode ◽  
Center Frequency ◽  
Back Side ◽  
Dielectric Resonator Antenna ◽  
Band Frequency ◽  
Ku Band

A novel single feed aperture-coupled wideband dielectric resonator antenna (DRA) exhibiting righ-handed circular polarization (RHCP) operating in the Ku-band frequency range is presented. The aperture-coupled single feed design utilizes back-side microstrip excitation through a novel bow-tie-shaped cross-slots in the ground plane. Extensive simulation parametric studies resulted in a 3 dB axial ratio (AR) bandwidth of 17.24% at a center frequency of 13 GHz, where the dielectric resonator is excited in its HEM11δresonant mode. A prototype DRA was fabricated with some limitations and experimentally verified for the impedance matching and radiation patterns showing circular polarization.

scholarly journals An ultra wideband antenna for Ku band applications

2019 ◽  
Vol 9 (1) ◽  
pp. 452
Author(s):  
Aziz El fatimi ◽  
Seddik Bri ◽  
Adil Saadi
Keyword(s):  
Ground Plane ◽  
Three Dimensional ◽  
Stationary Wave ◽  
Ultra Wideband ◽  
Patch Antennas ◽  
Wideband Antenna ◽  
Mono Layer ◽  
Three Dimensional Modeling ◽  
Tan Δ ◽  
Ku Band

<div class="WordSection1"><p>This paper presents a candidate ultra wideband antenna for Ku-band wireless communi- cations applications, analyzed and optimized by the finite element method (FEM). This three-dimensional modeling was realized and compared with published antennas for val- idate the performances of the proposed antenna. Its design is based on the insertion o fseveral symmetrical slots of different sizes on the ground plane of a mono-layer patch antenna to overcome the main limitation of the narrow bandwidth of patch antennas. The proposed antenna, made on an FR-4 epoxy mono-layer substrate with a defected ground plane (dielectric constant <em>ε</em><em>r </em>= 4,4, loss tangent <em>tan δ </em>= 0,02 and thickness <em>hs </em>= 1.6 mm). The simulated numerical results obtained are very satisfying; Bandwidth = 10.48 GHz from <em>f</em>1 = 9.34 GHz to <em>f</em>2 = 19.82 GHz, <em>S</em>11 = -34.17 dB, Voltage Stationary Wave Ratio VSWR = 1.04 , Gain = 6.27 dB.</p></div>

scholarly journals Rectangular Zigzag Microstrip Patch Antenna with Swastik Shape DGS for WLAN, C and Ku-Band Applications

2019 ◽  
Vol 8 (9S) ◽  
pp. 280-284
Keyword(s):  
Patch Antenna ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Ground Plane ◽  
Microstrip Patch Antenna ◽  
Area Network ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Microstrip Patch ◽  
Ku Band

A triple band microstrip-fed patch antenna is presented which contains the radiating structure having rectangular zigzag shape patch and an altered ground structure with a swastic shape design. This modified ground plane actually acts as a defected ground structure (DGS). Both the modified ground plane and radiating patch are perfect electric conductors. The patch is imprinted on a substrate named as Epoxy Glass FR-4 having thickness 1.6 mm, relative permittivity 4.4, and loss tangent 0.0024. The designed microstrip patch antenna (MPA) is able to generate three specific operating bands viz. 11.9–13.6 GHz, 5.71–5.82 GHz, 4.5-4.6 GHz with adequate bandwidth of 1.64 GHz, 110 MHz and 100 MHz and corresponding return loss of -32dB, -23dB, -14.3dB respectively covering Wireless Local Area Network (WLAN), C-band and Ku-band applications. A parametric study has been performed for the rectangular slots located in the patch. Proposed MPA is simulated using Computer Simulation Technology Microwave Studio Version 14.0 (CST MWS V14.0). Lastly, the fabrication of the proposed antenna with optimized parameters has been accomplished and measured results for S-parameter magnitude have been discussed

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