scholarly journals Active Patch Antenna for Wi-Fi 5, 6 and Wi-Fi 6E Applications

2021 ◽  
Vol 2096 (1) ◽  
pp. 012010
Author(s):  
E A Ischenko ◽  
Yu G Pasternak ◽  
V A Pendyurin ◽  
S M Fedorov
Keyword(s):  
Antenna Array ◽  
Correlation Coefficient ◽  
Patch Antenna ◽  
Radiation Patterns ◽  
Frequency Range ◽  
Mimo Antenna ◽  
S Parameters ◽  
Envelope Correlation

Abstract The article discusses a planar patch antenna with a metamaterial integrated into the structure, which allows the antenna to function in the upper Wi-Fi 5, 6 frequency range and the Wi-Fi 6E range. For the study, we built graphs of S-parameters, radiation patterns; on the basis of the resulting structure, we formed a MIMO antenna array for which we determined the main characteristics - the envelope correlation coefficient and the multiplexing efficiency

INTERCONNECTION OF VIVALDI ANTENNAS IN THE MIMO ANTENNA ARRAY

2021 ◽  
pp. 108-111
Author(s):  
С.М. Фёдоров ◽  
Е.А. Ищенко ◽  
И.А. Зеленин ◽  
Е.В. Папина ◽  
Е.Д. Меньшикова ◽  
...  
Keyword(s):  
Antenna Array ◽  
Correlation Coefficient ◽  
Communication Systems ◽  
Information Transfer ◽  
Diversity Gain ◽  
Stable Operation ◽  
Mimo Antenna ◽  
Information Transfer Rate ◽  
Vivaldi Antennas ◽  
Envelope Correlation

Рассматривается MIMO антенная решетка, сформированная из двух антенн Вивальди, которые должны обеспечить работу в частотном диапазоне, выделенном для сетей пятого поколения - 24,25-24,65 ГГц. Для определения основных параметров антенны применялось моделирование, на основе которого были установлены основные характеристики MIMO антенной решетки: коэффициент корреляции огибающей, коэффициент усиления при разнесенном режиме, эффективность сложения. По результатам было определено, что при расстоянии между антеннами в 6,13 мм достигаются максимально возможные характеристики MIMO антенной решетки, а для стабильного функционирования достаточным является расстояние в 2,45 мм. В статье приводятся размеры исследуемой антенны, графики обратных потерь (S - параметров), диаграммы направленности, коэффициентов корреляции огибающих, коэффициента усиления при разнесенном режиме, эффективности сложения при различных расстояниях между антенными элементами. Обеспечение стабильности работы MIMO антенной решетки является важной задачей, так как все современные системы связи используют эту технологию для реализации многоканальной передачи, а следовательно, для повышения скорости передачи информации. Для определения геометрических характеристик и выполнения моделирования применялось специализированное программное обеспечение The article discusses a MIMO antenna array formed of two Vivaldi antennas, which should provide operation in the frequency range allocated for fifth generation networks - 24.25-24.65 GHz. To determine the main parameters of the antenna, we applied modeling, on the basis of which we determined the main characteristics of the MIMO antenna array: the envelope correlation coefficient, the diversity gain, the multiplexing efficiency. According to the results, we determined that with a distance between antennas of 6.13 mm, the maximum possible characteristics of a MIMO antenna array are achieved, and a distance of 2.45 mm is sufficient for stable operation. The article gives the dimensions of the antenna under study, graphs of return loss (S11 - parameters), radiation patterns, envelope correlation coefficient, diversity gain, multiplexing efficiency at different distances between the antenna elements. Ensuring the stability of the MIMO antenna array is an important task since all modern communication systems use this technology to implement multichannel transmission, and, consequently, to increase the information transfer rate. We used specialized software to determine geometric characteristics and perform modeling

scholarly journals A Compact UWB Diversity Antenna

2014 ◽  
Vol 2014 ◽  
pp. 1-6
Author(s):  
Hui Zhao ◽  
Fushun Zhang ◽  
Chunyang Wang ◽  
Jiangang Liang
Keyword(s):  
Correlation Coefficient ◽  
Ground Plane ◽  
Impedance Bandwidth ◽  
Antenna Gain ◽  
Radiation Patterns ◽  
Frequency Range ◽  
Microstrip Lines ◽  
Uwb Applications ◽  
Diversity Antenna ◽  
Envelope Correlation

A compact printed ultrawideband (UWB) diversity antenna with a size of 30 mm × 36 mm operating at a frequency range of 3.1–10.6 GHz is proposed. The antenna is composed of two semielliptical monopoles fed by two microstrip lines. Two semicircular slots, two rectangular slots, and one stub are introduced in the ground plane to adjust the impedance bandwidth of the antenna and improve the isolation between two feeding ports. The simulated and measured results show that impedance bandwidth of the proposed antenna can cover the whole UWB band with a good isolation of < −15 dB. The radiation patterns, peak antenna gain, and envelope correlation coefficient are also measured and discussed. The measured results show that the proposed antenna can be a good candidate for some portable MIMO/diversity UWB applications.

scholarly journals Design of 5g Mimo Antenna with Enhanced Isolation

2020 ◽  
Vol 9 (3) ◽  
pp. 377-380
Keyword(s):  
Correlation Coefficient ◽  
Patch Antenna ◽  
Ground Plane ◽  
Monopole Antenna ◽  
Frequency Range ◽  
Antenna Structure ◽  
Minimum Frequency ◽  
Mimo Antenna ◽  
Rectangular Patch ◽  
Feeding Plate

In this paper, MIMO 2-port, 2-element antenna for 5G applications is presented. This is monopole antenna structure consists of two-rectangular patch of same shapes. Each antenna has a feeding plate connect at the centre of the patch antenna for enhancing isolation the etching of rectangular slots on the ground plane in between the two patches along with thick and sheet of the substrate just below at the centre of the patch. Maximum isolation achieved among the ports is less than -30db. envelope correlation coefficient is below 0.10 in bands of interest. The minimum frequency range covered by the four ports of this antenna is from around 3.0 to 4.0 GHz, thus covering expected future 5G band (3300–3700 MHz).

scholarly journals A Compact MIMO Antenna with Inverted C-Shaped Ground Branches for Mobile Terminals

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Zixian Yang ◽  
Hongchun Yang ◽  
Haijuan Cui
Keyword(s):  
Correlation Coefficient ◽  
Impedance Bandwidth ◽  
Antenna Element ◽  
Planar Antenna ◽  
Mobile Terminals ◽  
Mimo Antenna ◽  
High Isolation ◽  
Operating Band ◽  
Measured Radiation ◽  
Envelope Correlation

A compact printed MIMO antenna for mobile terminals is presented. With two planar antenna elements, the −6 dB impedance bandwidth of 2.32 GHz (1.48–3.8 GHz) is obtained, which covers GSM 1800/1900, UMTS, WLAN, Wimax, S-band, and most of LTE bands. Each antenna element with a small occupation of 15 × 20 mm2consists of a driven strip and a shorted strip. Two inverted C-shaped ground branches are introduced between two elements to improve the isolation. The simulated results are studied and the measured results show that high isolation of more than 18 dB at the entire operating band is achieved. Meanwhile, the impedance performance is also improved by adding the branches. Furthermore, the measured radiation performances and envelope correlation coefficient also demonstrate that the proposed antenna could be a good candidate for mobile terminals.

scholarly journals Design of Dual Frequency Stacked Patch Antenna Array for L-Band Applications

2019 ◽  
Vol 8 (3) ◽  
pp. 7503-7506
Keyword(s):  
Antenna Array ◽  
Patch Antenna ◽  
Coaxial Cable ◽  
Single Element ◽  
Dual Frequency ◽  
Radiation Patterns ◽  
Specific Element ◽  
Impedance Characteristics ◽  
L Band ◽  
Stacked Patch Antenna

A Double Frequency stacked patch antenna array, DESIGNED for the frequencies of 1.348 GHz and 1.575 GHz in L-Band . The array accommodates sixteen antenna elements of 4×4 array fed by individualistic coaxial cable. The Radiation patterns for the two single element and array are studied. Comparison between the radiation patterns of a specific element and array are studied. Dual patch is used for both single element and antenna array, two patches resonates for two different designed frequencies of L-Band the impedance characteristics of both single element and array are studied and gains of single element and array are compared. ANSYS HFSS software is used for the simulation in this proposed work.

scholarly journals A Novel Dual-Band MIMO Antenna with Lower Correlation Coefficient

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Jian Zhang ◽  
Jun OuYang ◽  
Kai Zhi Zhang ◽  
Feng Yang
Keyword(s):  
Correlation Coefficient ◽  
Free Space ◽  
Dual Band ◽  
Radiation Patterns ◽  
Commercial Software ◽  
Matching Effect ◽  
Mimo Antenna ◽  
Lower Band ◽  
Lower Correlation ◽  
Peak Gain

This paper demonstrates a novel dual-band operated MIMO antenna which consisted of planar monopole (main antenna) and 3D slot element (auxiliary antenna). The main antenna is printed on a 1.6 mm thick FR4 board, while the auxiliary antenna is fabricated with gold-coated copper. A lumped impedance network is applied to enhance matching effect at port1. From simulations by commercial software, it can be found that the proposed antenna is able to cover GSM800, GSM900 (lower band), and LTE/ WiMAX/WLAN (higher band) quite well. Good agreements between simulations and measurements are obtained. Corresponding measured results, antenna efficiency, peak gain, and radiation patterns, are presented at the same time. By equipping a passive decoupling element, the coupling power on the ground is radiated into free space, and great enhancement of isolation between antenna elements, especially for lower band, is achieved.

scholarly journals Ladder Arrangement Method for Stealth Design of Vivaldi Antenna Array

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
XiaoXiang He ◽  
SaiSai Huang ◽  
Teng Chen ◽  
Yang Yang
Keyword(s):  
Antenna Array ◽  
Antenna Arrays ◽  
Design Method ◽  
Radiation Patterns ◽  
X Band ◽  
S Parameters ◽  
Vivaldi Antenna ◽  
Element Array ◽  
Vivaldi Antennas ◽  
Radiation Direction

A novel stealth design method for X-band Vivaldi antenna arrays is proposed in this paper by ladder arrangement along radiation direction. Two-element array, eight-element array, and 3 × 7-element array are investigated in this paper. S parameters, RCSs, and radiation patterns are studied, respectively. According to the ladder arrangement of Vivaldi antennas presented, 16.3 dBsm maximal RCS reduction is achieved with satisfied radiation performance. As simulated and measured, results demonstrate that the effectiveness of the presented low RCS design method is validated.

scholarly journals Performance evaluation of 2-port MIMO LTE-U terminal antenna with user’s hand effect

2019 ◽  
Vol 8 (1) ◽  
pp. 158-165
Author(s):  
Ahmed Mohamed Elshirkasi ◽  
Azremi Abdullah Al-Hadi ◽  
Rizwan Khan ◽  
Ping Jack Soh
Keyword(s):  
Performance Evaluation ◽  
Power Allocation ◽  
Correlation Coefficient ◽  
Measurement Data ◽  
Spatial Multiplexing ◽  
Diversity Combining ◽  
Frequency Range ◽  
Mimo Antenna ◽  
Total Capacity ◽  
Waterfilling Algorithm

This paper presents the performance evaluation of 2-port MIMO antenna for LTE-U sub 6 GHz band. The evaluation focuses on the effect of user’s hand in a uniform environment and the analysis were carried out on simulation and measurement data of antenna ports. Results show that the highest performance of the design is on the frequency range from 4.5 GHz to 5.5 GHz, and the ports have low envelope correlation coefficient (ECC) less than 0.16 in both cases of without and with user’s hand. However, the presence of the user’s hand reduces mean effective gain (MEG) of ports and diversity combining gain by more than 1.6 dB compared with no-hand case. The multiplexing efficiency is around 81% and reduced by the presence of the user’s hand to 55%. Despite this reduction; the design shows high spatial multiplexing capability in both cases. The capacity carried by the second transmission eigenmode is about 39% from the total capacity under waterfilling algorithm transmit power allocation.

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