Design and Analysis of Reflectarray Compound Unit Cell for 5G Communication

2021 ◽  
Vol 35 (12) ◽  
pp. 1513-1518
Author(s):  
Tahir Bashir ◽  
Han Xiong ◽  
Abdul Aziz ◽  
Muhammad Qureshi ◽  
Haroon Ahmed ◽  
...  
Keyword(s):  
Single Layer ◽  
Unit Element ◽  
Antenna Design ◽  
Center Frequency ◽  
Surface Current Density ◽  
Layer Compound ◽  
Single Beam ◽  
Reflection Phase ◽  
Phase Range ◽  
Reflectarray Antenna

In this paper, a single-layer compound unit element is proposed for reflectarray antenna design operating in Ka-band (26.5-29.5GHz) at the center frequency of 28GHz. A systematic study on the performance of a compound unit element is examined first. The structure of the proposed unit element is a unique combination of two different shape simple patches i.e. cross dipole and square patches. The desired phase range is achieved due to the multi-resonance of both patch elements with a single layer without any air-gap. The compound unit element is simulated by computer models of CST Microwave studio based on the Floquet approach (infinite periodic approach) and it has achieved 348.589o reflection phase range. Furthermore, the analysis of the reflection phase range, S-curve gradient, reflection magnitude, fabrication tolerance, and surface current density is also simulated and demonstrated. Based on the remarkable performance, the proposed element can be considered as the best element of single-beam or multi-beam reflectarray antenna design for 5G applications.

scholarly journals Dual Layer Microstrip Refflectarray Composed of Two Stacked Arrays with Minkowski and Square Shaped Radiating Element

2012 ◽  
Vol 58 (1) ◽  
Author(s):  
M. F. Ismail ◽  
A. Wahid ◽  
M. K. A. Rahim ◽  
F. Zubir
Keyword(s):  
Single Layer ◽  
Side Lobe ◽  
Side Lobe Level ◽  
Variable Dimension ◽  
Reflection Phase ◽  
Radiating Element ◽  
Reflector Surface ◽  
Phase Range ◽  
Reflectarray Antenna ◽  
Lower Insertion Loss

A dual layer microstrip reflectarray composed of two stacked arrays with Minkowski and square patches of variable dimension is presented. The reflection phase coefficients on the reflector surface is achieved by tuning the dimensions of the patches. This technique is to broaden the bandwidth and to extend the reflection phase range compare to a conventional single layer reflectarray. From the simulation results of a unit cell composed of two stacked arrays of Minkowski and square patch showed that, 415° reflection phase range is achieved and lower insertion loss which is lower than 0.9 dB. Base on the simulated reflection phase coefficient, a dual layer microstrip reflectarray antenna with Minkowski and square radiating shape elements have been design and model using commercially available computer models of CST Microwave Studio. The reflectarray has been constructed using Taconic RF-35 substrate. From the radiation pattern at 11 GHz frequency, it shows that the HPBW of 4.7º in both plane, a side lobe level (SLL) of –17 dB and a maximum directivity of 26.1 dBi.

scholarly journals A Novel Asymmetric Patch Reflectarray Antenna with Ground Ring Slots for 5G Communication Systems

Electronics ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 1450
Author(s):  
M. Hashim Dahri ◽  
M. Haizal Jamaluddin ◽  
Fauziahanim C. Seman ◽  
Muhammad Inam Abbasi ◽  
Adel Y. I. Ashyap ◽  
...  
Keyword(s):  
Communication Systems ◽  
Ground Plane ◽  
Single Layer ◽  
High Gain ◽  
Circular Ring ◽  
Vertical Side ◽  
Phase Range ◽  
Dual Resonance ◽  
Reflectarray Antenna ◽  
5G Communication

The narrow bandwidth and low gain performances of a reflectarray are generally improved at the cost of high design complexity, which is not a good sign for high-frequency operation. A dual resonance asymmetric patch reflectarray antenna with a single layer is proposed in this work for 5G communication at 26 GHz. The asymmetric patch is developed from a square patch by tilting its one vertical side by a carefully optimized inclination angle. A progressive phase range of 650° is acquired by embedding a circular ring slot in the ground plane of the proposed element for gain improvement. A 332-element, center feed reflectarray is designed and tested, where its high cross polarization is suppressed by mirroring the orientation of asymmetric patches on its surface. The asymmetric patch reflectarray offers a 3 dB gain bandwidth of 3 GHz, which is 4.6% wider than the square patch reflectarray. A maximum measured gain of 24.4 dB has been achieved with an additional feature of dual linear polarization. Simple design with wide bandwidth and high-gain of asymmetric patch reflectarray make it suitable to be used in 5G communications at high frequencies.

scholarly journals Dielectric Resonator Reflectarray Antenna Unit Cells for 5G Applications

2018 ◽  
Vol 8 (4) ◽  
pp. 2531
Author(s):  
Nur Fazreen Sallehuddin ◽  
Mohd Haizal Jamaluddin ◽  
Muhammad Ramlee Kamarudin ◽  
Muhammad Hashim Dahri ◽  
Siti Umairah Tajol Anuar
Keyword(s):  
Computer Simulation ◽  
Dielectric Resonator ◽  
Unit Element ◽  
Performance Comparison ◽  
Optimum Configuration ◽  
Microstrip Patch ◽  
Phase Slope ◽  
Unit Cells ◽  
Phase Range ◽  
Reflectarray Antenna

This paper presents an investigation for the performance comparison of three different unit cell configurations operating at 26 GHz for 5G applications. The unit cells are cross shape dielectric resonator, cross microstrip patch and cross hybrid dielectric resonator. Verification of the comparison has been done by simulations using commercial Computer Simulation Technology Microwave Studio (CST MWS). The simulated results for reflection phase, slope variation, reflection loss and 10% bandwidth were analyzed and compared. The results indicate that the optimum configuration to be deployed for the reflectarray’s unit element in order to fulfill the 5G requirements of a wide bandwidth is the cross hybrid DRA. This configuration is a combination of cross DRA with cross microstrip patch as the parasitic element in order to tune the phase and provide a wide phase range with smooth variation slope. Cross hybrid DRA provided a wide phase range of 520° with 0.77 dB loss and 10% bandwidth of 160 MHz.

A single-layer low-cost reflectarray antenna using dual-resonant element approach

Frequenz ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Ting Liu ◽  
Lin Zhang ◽  
Jialiang Wu ◽  
Jing Zhao ◽  
Zhiguo Zeng
Keyword(s):  
Phase Shift ◽  
High Efficiency ◽  
Low Cost ◽  
Single Layer ◽  
Center Frequency ◽  
Gain Bandwidth ◽  
Element Approach ◽  
Reflectarray Antenna ◽  
Good Agreement ◽  
Ku Band

Abstract A single-layer wideband high efficiency reflectarray in Ku-band has been presented in this paper. A novel dual-resonant patch element approach has been analyzed and optimized to obtain good radiation performances within the operating frequency band. The phase shift range of 573° can be obtained with less steep linear phase shift curve. To compensate the differential spatial phase delays from the feed to the elements, the variable size technique has been utilized for obtaining required phase shifts. The reflectarray aperture has been designed, manufactured and measured. Measured results are in good agreement with the simulated ones. The measured gain of the reflectarray aperture at center frequency can reach 27.2 dBi, which is equivalent to aperture efficiency of 51.3%, and the 1-dB gain bandwidth of the aperture is 18.4%.

A wideband, single layer reflectarray antenna with cross loop and square ring slot loaded patch elements

2019 ◽  
Vol 11 (7) ◽  
pp. 703-710 ◽  
Author(s):  
Lingasamy Veluchamy ◽  
Gulam Nabi Alsath Mohammed ◽  
T. Selvan Krishnasamy ◽  
Rajeev Jyoti
Keyword(s):  
Ground Plane ◽  
Single Layer ◽  
Unit Cell ◽  
Operating Frequency ◽  
Geometrical Parameters ◽  
Frequency Range ◽  
Operating Frequency Range ◽  
Cell Element ◽  
Phase Range ◽  
Reflectarray Antenna

AbstractThis paper presents the design and analysis of a wideband X/Ku and Ku band reflectarray antenna. The proposed unit cell of the reflectarray antenna comprises a patch loaded with two distinct slots, viz. a square ring and a cross loop, printed on a low loss substrate, which is backed by a foam-loaded ground plane. The unit cell element offers a linear and large dynamic reflection phase range, which is achieved by optimizing the shape, location, and geometrical parameters of the two slots loaded on the patch. A 324 element microstrip reflectarray antenna of size 200 × 200 mm2 is constructed and analyzed for its radiation characteristics by simulation and measurement. The reflectarray offers a 3 dB gain bandwidth of 50.75% with the operating frequency range of 10–16.8 GHz. It offers a peak gain and aperture efficiency of 25.4 dB and 40% at 12.6 GHz, respectively. The cross-polarization level is below −40 dB over the entire operating frequency range.

scholarly journals Resonant Elements for Tunable Reflectarray Antenna Design

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
M. Y. Ismail ◽  
M. Inam
Keyword(s):  
Single Layer ◽  
Scattering Parameter ◽  
Accurate Analysis ◽  
Band Frequency ◽  
Rectangular Patch ◽  
Phase Errors ◽  
X Band ◽  
Phase Range ◽  
Finite Integral ◽  
Reflectarray Antenna

This paper presents an accurate analysis of different configurations of reflectarray resonant elements that can be used for the design of passive and tunable reflectarrays. Reflection loss and bandwidth performances of these reflectarray elements have been analyzed in the X-band frequency range with the Finite Integral Method technique, and the results have been verified by the waveguide scattering parameter measurements. The results demonstrate a reduction in the phase errors offering an increased static linear phase range of 225° which allows to improve the bandwidth performance of single layer reflectarray antenna. Moreover a maximum dynamic phase range of 320° and a volume reduction of 22.15% have been demonstrated for a 10 GHz reflectarray element based on the use of rectangular patch with an embedded circular slot.

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