A compact dual polarized ultrawideband multiple-input- multiple-output antenna

2015 ◽  
Vol 58 (1) ◽  
pp. 163-166 ◽  
Author(s):  
Muhammad Saeed Khan ◽  
Antonio-Daniele Capobianco ◽  
Adnan Iftikhar ◽  
Sajid Asif ◽  
Benjamin D. Braaten
Keyword(s):  
Multiple Input Multiple Output ◽  
Multiple Input ◽  
Input Multiple Output ◽  
Dual Polarized

scholarly journals Sectoral dual-polarized MIMO antenna for 5G-NR band N77 base station

2021 ◽  
Vol 21 (3) ◽  
pp. 1611
Author(s):  
Muhsin Muhsin ◽  
Afina Lina Nurlaili ◽  
Aulia Saharani ◽  
Indah Rahmawti Utami
Keyword(s):  
High Performance ◽  
Mimo Systems ◽  
Multiple Input Multiple Output ◽  
Base Station ◽  
Mimo Antenna ◽  
Future Technology ◽  
New Radio ◽  
Multiple Input ◽  
Input Multiple Output ◽  
Dual Polarized

<span>Massive internet of things (IoT) in 5G has many advantages as a future technology. It brings some challenges such as a lot of devices need massive connection. In this case, multiple-input multiple-output (MIMO) systems offer high performance and capacity of communications. There is a challenge of correlation between antennas in MIMO. This paper proposes three-sectors MIMO base station antenna for 5G-New Radio (5G-NR) band N77 with dual polarized configuration to reduce the correlation. The proposed antenna has a maximum coupling of -16.90 dB and correlation below 0.01. The obtained bit error rate (BER) performance is very close to non-correlated antennas with bandwidth of 1.87 GHz. It means that the proposed antenna has been well designed.</span>

A compact dual-polarized co-radiator MIMO antenna for UWB applications

2021 ◽  
pp. 1-14
Author(s):  
Harleen Kaur ◽  
Hari Shankar Singh ◽  
Rahul Upadhyay
Keyword(s):  
Ground Plane ◽  
Multiple Input Multiple Output ◽  
Ultra Wideband ◽  
Impedance Bandwidth ◽  
Mimo Antenna ◽  
Wireless Applications ◽  
Multiple Input ◽  
Input Multiple Output ◽  
Dual Polarized ◽  
Uwb Applications

Abstract In this research study, a compact dual-polarized co-radiator ultra-wideband (UWB) multiple-input multiple-output (MIMO) antenna with improved impedance bandwidth and isolation is proposed for wireless applications. The designed co-radiator has an overall area of 0.3λo × 0.3λo mm2 (where, λo is free space wavelength corresponding to the lower cut-off frequency, i.e., 3.1 GHz). The proposed resonator comprises of a hybrid geometry which is created with the combinations of a circular-shaped patch, a square, and two rectangular stubs. It is centrally aligned between two 50 Ω micro-strip feed lines that are positioned orthogonal to each other. Further, the modified ground plane is attached with the end-loaded line which provides broadband isolation over entire UWB frequency band. The simulated results of the proposed antenna exhibit wideband characteristics with impedance bandwidth of 3.1–16.9 GHz with minimum isolation of −15 dB. Moreover, all the radiation performance parameters are analyzed and discussed. Some important diversity parameters such as envelope correlation coefficient, mean effective gain, effective diversity gain, and channel capacity loss have also been evaluated. Furthermore, all the measured results of proposed antenna agree well with the simulated results which make the proposed antenna a suitable candidate for UWB-MIMO wireless applications.

The Channel Capacity of Dual-Polarized MIMO Mobile Satellite System

2014 ◽  
Vol 643 ◽  
pp. 111-116
Author(s):  
Jia Yin Chen ◽  
Yuan Li ◽  
Ming Chuan Yang ◽  
Xiao Feng Liu
Keyword(s):  
Channel Capacity ◽  
Communication System ◽  
Satellite Communication ◽  
Multiple Input Multiple Output ◽  
Satellite System ◽  
Multiple Input ◽  
Input Multiple Output ◽  
Dual Polarized ◽  
Mobile Satellite ◽  
Mimo Technology

Applying Multiple-Input Multiple-Output (MIMO) technology in terrestrial wireless networks can obtain large capacity gain. Therefore, MIMO technology is widely applied in satellite communication system, in which orbital positions are increasingly crowded and frequency resources are of shortage. This paper attempts to research on channel capacity in 2×2 dual-polarized MIMO mobile satellite (DMMS) system and discovers that when XPD (Cross Polarization Discrimination) is above zero, the channel capacity increases approximately linearly with the XPD within certain range. Adding Ricean factor K in consideration of its special features,the system’s capacity increases with the Ricean factor K. Simulation results demonstrate that the application of MIMO technology in satellite mobile communication system can improve the channel capacity significantly, providing great support for the development of future satellite MIMO technology.

scholarly journals Analysis of millimetre-wave polarization diverse multiple-input multiple-output capacity

2015 ◽  
Vol 2 (12) ◽  
pp. 150322 ◽  
Author(s):  
Nicholas P. Lawrence ◽  
Brian W.-H. Ng ◽  
Hedley J. Hansen ◽  
Derek Abbott
Keyword(s):  
Channel Model ◽  
Multiple Input Multiple Output ◽  
Spatial Diversity ◽  
Three Dimensions ◽  
Rician Fading ◽  
Polarization Diversity ◽  
Millimetre Wave ◽  
Multiple Input ◽  
Input Multiple Output ◽  
Dual Polarized

Millimetre-waves offer the possibility of wide bandwidth and consequently high data rate for wireless communications. For both uni- and dual-polarized systems, signals sent over a link may suffer severe degradation due to antenna misalignment. Orientation robustness may be enhanced by the use of mutual orthogonality in three dimensions. Multiple-input multiple-output polarization diversity offers a way of improving signal reception without the limitations associated with spatial diversity. Scattering effects often assist propagation through multipath. However, high path loss at millimetre-wave frequencies may limit any reception enhancement through scattering. We show that the inclusion of a third orthogonal dipole provides orientation robustness in this setting, as well as in a rich scattering environment, by means of a Rician fading channel model covering all orientations for a millimetre-wave, tri-orthogonal, half-wave dipole transmitter and receiver employing polarization diversity. Our simulation extends the analysis into three dimensions, fully exploiting individual sub-channel paths. In both the presence and absence of multipath effects, capacity is observed to be higher than that of a dual-polarized system over the majority of a field of view.

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