Journal ArticleDOI
Array-Antenna Decoupling Surface
Reads0
Chats0
TLDR
In this paper, a new concept that is called array-antenna decoupling surface (ADS) for reducing the mutual coupling between antenna elements in a large-scale array antenna is proposed for the first time.Abstract:
Massive multiple-input multiple-output (M-MIMO) technology is considered to be a key enabling technology for future wireless communication systems. One of the challenges in effectively implementing an advanced precoding scheme to a large-scale array antenna is how to reduce the mutual coupling among antenna elements. In this paper, a new concept that is called array-antenna decoupling surface (ADS) for reducing the mutual coupling between antenna elements in a large-scale array antenna is proposed for the first time. An ADS is a thin surface that is composed of a plurality of electrical small metal patches and is placed in front of the array antenna. The partially diffracted waves from the ADS can be controlled to cancel the unwanted coupled waves. Two practical design examples are given to illustrate the design process and considerations, and to demonstrate the usefulness of ADS for the applications of phased array antennas and M-MIMO systems when commonly used precoding schemes are applied. The attractive features of ADS include its applicability to a large-scale array antenna; suitability for a wide range of antenna forms; wide decoupling bandwidth; and simplicity in implementation.read more
Citations
More filters
Journal ArticleDOI
A Review of Mutual Coupling in MIMO Systems
TL;DR: This paper provides a systematic review of the mutual coupling in multiple-input multiple-output (MIMO) systems, including the effects on performances of MIMO systems and various decoupling techniques.
Journal ArticleDOI
A Comprehensive Survey on “Various Decoupling Mechanisms With Focus on Metamaterial and Metasurface Principles Applicable to SAR and MIMO Antenna Systems”
Mohammad Alibakhshikenari,Fatemeh Babaeian,Bal Singh Virdee,Sonia Aissa,Leyre Azpilicueta,Chan H. See,Ayman A. Althuwayb,Isabelle Huynen,Raed A. Abd-Alhameed,Francisco Falcone,Ernesto Limiti +10 more
TL;DR: It is shown that the mutual-coupling reduction methods inspired by MTM and MTS concepts can provide a higher level of isolation between neighbouring radiating elements using easily realizable and cost-effective decoupling configurations that have negligible consequence on the array’s characteristics such as bandwidth, gain and radiation efficiency, and physical footprint.
Journal ArticleDOI
Self-Decoupled MIMO Antenna Pair With Shared Radiator for 5G Smartphones
TL;DR: A novel self-decoupled multiple-input multiple-output (MIMO) antenna pair with a shared radiator with promising potential for the future highly integrated MIMO antennas for 5G smartphones is proposed.
Journal ArticleDOI
Isolation Enhancement for MIMO Patch Antennas Using Near-Field Resonators as Coupling-Mode Transducers
TL;DR: In this article, a novel decoupling technique for closely packed patch antennas using near-field resonator (NFR) above each antenna element is proposed, which can be easily applied to multiple-input multiple-output (MIMO) antennas having multiple patch elements.
Journal ArticleDOI
Antenna Decoupling by Common and Differential Modes Cancellation
TL;DR: In this article, a general decoupling method based on a new perspective of common mode (CM) and differential mode (DM) cancellation is proposed for two closely spaced antennas, where the mutual coupling effect can be analyzed and solved by exciting them simultaneously with in-phase and out-of-phase signals.
References
More filters
Journal ArticleDOI
Noncooperative Cellular Wireless with Unlimited Numbers of Base Station Antennas
TL;DR: A cellular base station serves a multiplicity of single-antenna terminals over the same time-frequency interval and a complete multi-cellular analysis yields a number of mathematically exact conclusions and points to a desirable direction towards which cellular wireless could evolve.
Journal ArticleDOI
Scaling Up MIMO: Opportunities and Challenges with Very Large Arrays
Fredrik Rusek,Daniel Persson,Buon Kiong Lau,Erik G. Larsson,Thomas L. Marzetta,Fredrik Tufvesson +5 more
TL;DR: The gains in multiuser systems are even more impressive, because such systems offer the possibility to transmit simultaneously to several users and the flexibility to select what users to schedule for reception at any given point in time.
Journal ArticleDOI
Energy and Spectral Efficiency of Very Large Multiuser MIMO Systems
TL;DR: In this paper, the tradeoff between the energy efficiency and spectral efficiency of a single-antenna system is quantified for a channel model that includes small-scale fading but not large scale fading, and it is shown that the use of moderately large antenna arrays can improve the spectral and energy efficiency with orders of magnitude compared to a single antenna system.
Journal ArticleDOI
Scaling up MIMO: Opportunities and Challenges with Very Large Arrays
Fredrik Rusek,Daniel Persson,Buon Kiong Lau,Erik G. Larsson,Thomas L. Marzetta,Ove Edfors,Fredrik Tufvesson +6 more
TL;DR: Very large MIMO as mentioned in this paper is a new research field both in communication theory, propagation, and electronics and represents a paradigm shift in the way of thinking both with regards to theory, systems and implementation.
Posted Content
Energy and Spectral Efficiency of Very Large Multiuser MIMO Systems
TL;DR: It is shown that the use of moderately large antenna arrays can improve the spectral and energy efficiency with orders of magnitude compared to a single-antenna system.
Related Papers (5)
Microstrip antennas integrated with electromagnetic band-gap (EBG) structures: a low mutual coupling design for array applications
Fan Yang,Yahya Rahmat-Samii +1 more