Results 31 to 40 of about 5,384 (187)

Design and Implementation of Quad-Port MIMO Antenna with Dual-Band Elimination Characteristics for Ultra-Wideband Applications

Applied Sciences, 2020
A planar, microstrip line-fed, quad-port, multiple-input-multiple-output (MIMO) antenna with dual-band rejection features is proposed for ultra-wideband (UWB) applications.
Pawan Kumar, Shabana Urooj, Fadwa Alrowais   +2 more
doaj   +1 more source

Design and performance of four port MIMO antenna for IOT applications

ICT Express, 2022
In this paper, a four port MIMO antenna of compact split ring resonator (SRR) type with high degree of isolation among four ports on the antenna has been proposed for MIMO multiband applications.
R. Nagendra, S. Swarnalatha
doaj   +1 more source

Distributed MIMO systems with oblivious antennas [PDF]

2008 IEEE International Symposium on Information Theory, 2008
In Proc.
Osvaldo Simeone, Oren Somekh, H. Vincent Poor, Shlomo Shamai   +3 more
openaire   +2 more sources

Effects of Mutual Coupling on Degree of Freedom and Antenna Efficiency in Holographic MIMO Communications

IEEE Open Journal of Antennas and Propagation, 2023
The holographic multiple-input-multiple-output (MIMO) communications refer to the MIMO systems built with ultra-dense antenna arrays, whose channel models and potential applications have attracted increasing attentions recently.
Shuai S. A. Yuan, Xiaoming Chen, Chongwen Huang, Wei E. I. Sha   +3 more
doaj   +1 more source

Machine Learning‐Assisted Design and Performance Prediction of a Compact Dual‐Band Polarization‐Insensitive THz Metamaterial Absorber for Skin‐Cancer‐Related Refractive‐Index Sensing

Advanced Electronic Materials, EarlyView.
A compact QASRR‐based THz metamaterial absorber enables polarization‐insensitive dual‐band absorption and skin‐cancer‐related refractive‐index sensing through measurable resonance shifts. Field, surface‐current, and circuit analyses clarify the dual‐resonance mechanism, while StackNet‐assisted prediction accurately estimates the simulated absorption ...
Md. Murad Kabir Nipun, S. M. Rifatur Rana, Md. Golam Morshed, Imrose Jahan, F. A. Sabbir Ahamed, Md. Jahedul Islam   +5 more
wiley   +1 more source

Trade-Off Analysis of Mutual Coupling Effect on MIMO Antenna Multiplexing Efficiency in Three-Dimensional Space

IEEE Access, 2018
We analyzed the relation between two opposite effects of mutual coupling (MC), correlation reduction and gain loss, on the MIMO antenna performance in three-dimensional (3D) space. In the antenna level, those MC effects can be represented in terms of two
Satya Nandiwardhana, Jae-Young Chung
doaj   +1 more source

Konfigurasi Optimum pada Susunan Linear Antena MIMO Mikrostrip Polarisasi Sirkular

Jurnal Elkomika, 2022
ABSTRAK Untuk memastikan sistem antena MIMO memiliki kapasitas kanal yang diharapkan, maka rancangan antenanya harus memenuhi indikator kinerja optimum, yang ditentukan oleh karakteristik dari elemen penyusun dan konfigurasi susunan antena MIMO ...
RINA PUDJI ASTUTI, TRASMA YUNITA, LINDA MEYLANI   +2 more
doaj   +1 more source

Overcoming the Phase Discontinuity Problem in RIS Optimization: A Robust and Scalable Phase‐Aware Deep Regression Framework via Hybrid CNN–LSTM Architecture

Advanced Intelligent Systems, EarlyView.
The phase discontinuity problem—where the cyclic nature of phase angles causes catastrophic errors near the ±π boundary—is a fundamental obstacle in learning‐based reconfigurable intelligent surface (RIS) optimization. A phase‐aware hybrid CNN–LSTM framework resolves this by decomposing phase predictions into sine–cosine components, mapping circular ...
Seda Savaşçı Şen, Ali Çalhan, Murtaza Cicioğlu, Oğuzhan Demiryürek   +3 more
wiley   +1 more source

Microwave and Millimeter-Wave MIMO Antenna Using Conductive ITO Film

IEEE Access, 2020
This paper will present a novel design of optically transparent multiple-input multiple-output (MIMO) antenna made by indium tin oxide (ITO) films. The MIMO antenna involves patch and monopole antenna elements at 4.9 GHz and 26 GHz respectively.
Kwok Kan So, Bao-Jie Chen, Chi Hou Chan
doaj   +1 more source

Design and Analysis of Circular Polarized Two-Port MIMO Antennas with Various Antenna Element Orientations

Micromachines, 2023
This article presents the circularly polarized antenna operating over 28 GHz mm-wave applications. The suggested antenna has compact size, simple geometry, wideband, high gain, and offers circular polarization.
Fatma Taher, Hussam Al Hamadi, Mohammed S. Alzaidi, Hesham Alhumyani, Dalia H. Elkamchouchi, Yasser H. Elkamshoushy, Mohammad T. Haweel, Mohamed Fathy Abo Sree, Sara Yehia Abdel Fatah   +8 more
doaj   +1 more source