scholarly journals Neutralization Line Decoupling Tri-Band Multiple-Input Multiple-Output Antenna Design

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 27018-27026 ◽  
Author(s):  
Ruipeng Liu ◽  
Xing An ◽  
Hongxing Zheng ◽  
Mengjun Wang ◽  
Zhenbin Gao ◽  
...  
Keyword(s):  
Multiple Input Multiple Output ◽  
Antenna Design ◽  
Multiple Input ◽  
Input Multiple Output ◽  
Neutralization Line

Multiple-Input Multiple-Output Antenna Design and Applications

2021 ◽  
pp. 99-144
Author(s):  
Anup P. Bhat ◽  
Sanjay J. Dhoble ◽  
Kishor G. Rewatkar
Keyword(s):  
Multiple Input Multiple Output ◽  
Antenna Design ◽  
Multiple Input ◽  
Input Multiple Output

scholarly journals Watchstrap-Embedded Four-Element Multiple-Input–Multiple-Output Antenna Design for a Smartwatch in 5.2–5.8 GHz Wireless Applications

2018 ◽  
Vol 2018 ◽  
pp. 1-16 ◽  
Author(s):  
Chia-Hao Wu ◽  
Jwo-Shiun Sun ◽  
Bo-Shiun Lu
Keyword(s):  
Ground Plane ◽  
Multiple Input Multiple Output ◽  
Three Dimensional ◽  
Antenna Design ◽  
Mimo Antenna ◽  
Wireless Applications ◽  
Plastic Materials ◽  
Monopole Antennas ◽  
Multiple Input ◽  
Input Multiple Output

This paper presents a compact four-element multiple-input–multiple-output (MIMO) antenna design operating within the WiFi 802.11 ac bands (5.2–5.84 GHz) for a smartwatch. The antenna is fabricated using a polyamide substrate and embedded into the strap of a smartwatch model; the strap is created using three-dimensional etching of plastic materials. The four-element MIMO antenna is formed by four monopole antennas, has a simple structure, and is connected to the system ground plane of the smartwatch. Due to the stub and notched block between two antennas and the slit in the system ground, the four-element MIMO antenna exhibits favorable isolation. Moreover, the envelope correlation coefficient of the antennas is considerably lower than 0.005 in the operating band. The measured −6 dB impedance bandwidths of the four elements of the antenna (Ant1–Ant4) with the human wrist encompass the WiFi 802.11 ac range of 5.2–5.84 GHz; moreover, an isolation of more than 20 dB is achieved. The measured antenna efficiency with and without a phantom hand are 45%–55% and 93%–97%, respectively.

scholarly journals Desain U-slot Ganda untuk Meningkatkan Bandwidth Antena MIMO 5G Millimeter-wave

2020 ◽  
Vol 8 (1) ◽  
pp. 150
Author(s):  
EFRI SANDI ◽  
WISNU DJATMIKO ◽  
RIZKITA KURNIA PUTRI
Keyword(s):  
Millimeter Wave ◽  
Microstrip Antenna ◽  
Multiple Input Multiple Output ◽  
Antenna Design ◽  
Frequency Allocation ◽  
Mimo Antenna ◽  
Main Requirement ◽  
Multiple Input ◽  
Input Multiple Output ◽  
High Bandwidth

ABSTRAK Pada penelitian ini dikembangkan rekayasa antena mikrostrip (MSA) dengan penambahan U-slot ganda untuk meningkatkan performansi bandwidth antena mikrostrip. Penelitian sebelumnya berfokus pada penambahan U-slot tunggal dan didesain untuk frekuensi di bawah 15 GHz. Kebutuhan utama antena 5G adalah memiliki bandwidth yang lebar dan kemampuan Multiple Input Multiple Output (MIMO). Untuk itu perlu dikembangkan desain antena MIMO 5G dengan bandwidth yang lebih lebar pada frekuensi millimeter-wave 28 GHz sebagai kandidat utama alokasi frekuensi untuk komunikasi seluler 5G. Pada penelitian ini diajukan teknik desain antena MIMO dengan penambahan rekayasa U-slot ganda untuk meningkatkan performansi bandwidth. Hasil kalkulasi dan simulasi menunjukkan bahwa dengan penambahan U-slot ganda, dihasilkan peningkatan performansi bandwith sebesar 68% dibandingkan desain antena tanpa U-slot. Jika dibandingkan dengan hasil penelitian U-slot sebelumnya, penambahan U-slot ganda menghasilkan peningkatan bandwidth sebesar 76%. Kata kunci: U-Slot ganda, antena 5G millimeter-wave, MIMO, bandwidth ABSTRACT In this study, a microstrip antenna (MSA) was developed with the addition of a double U-slot to improve bandwidth performance. Previous studies have focused on adding single U-slots and designed for frequencies below 15 GHz. The main requirement for 5G antennas is high bandwidth performance and multiple inputmultiple output capabilities (MIMO). Therefore, it is necessary to develop a 5G MIMO antenna with broader bandwidth at the millimeter-wave frequency 28 GHz as the primary candidate for frequency allocation for 5G cellular communication. In this study, MIMO antenna design techniques were proposed with the addition of a double U-slot method to improve bandwidth performance. The calculation and simulation results show that with the addition of a double U-slot, an increase in bandwidth performance of 68% compared to antenna designs without U-slots and 76% when compared to using a single U-slot in previous studies. Keywords: Double U-Slot, millimeter-wave 5G antenna, MIMO, bandwidth

scholarly journals A New CPW-Fed Diversity Antenna for MIMO 5G Smartphones

Electronics ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 261 ◽  
Author(s):  
Naser Ojaroudi Parchin ◽  
Haleh Jahanbakhsh Basherlou ◽  
Yasir I. A. Al-Yasir ◽  
Ahmed M. Abdulkhaleq ◽  
Mohammad Patwary ◽  
...  
Keyword(s):  
Coplanar Waveguide ◽  
Multiple Input Multiple Output ◽  
Antenna Design ◽  
Compact Size ◽  
Multiple Input ◽  
Input Multiple Output ◽  
Good Potential ◽  
And Performance ◽  
Diversity Antenna ◽  
Better Than

In this study, a new coplanar waveguide (CPW)-fed diversity antenna design is introduced for multiple-input–multiple-output (MIMO) smartphone applications. The diversity antenna is composed of a double-fed CPW-fed antenna with a pair of modified T-ring radiators. The antenna is designed to cover the frequency spectrum of commercial sub-6 GHz 5G communication (3.4–3.8 and 3.8–4.2 GHz). It also provides high isolation, better than −16 dB, without an additional decoupling structure. It offers good potential to be deployed in future smartphones. Therefore, the characteristics and performance of an 8-port 5G smartphone antenna were investigated using four pairs of the proposed diversity antennas. Due to the compact size and also the placement of the elements, the presented CPW-fed smartphone antenna array design occupies a very small part of the smartphone board. Its operation band spans from 3.4 to 4.4 GHz. The simulated results agree well with measured results, and the performance of the smartphone antenna design in the presence of a user is given in this paper as well. The proposed MIMO design provides not only sufficient radiation coverage supporting different sides of the mainboard but also polarization diversity.

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