Journal ArticleDOI
Printed MIMO-Antenna System Using Neutralization-Line Technique for Wireless USB-Dongle Applications
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TLDR
A printed two-multiple-input multiple-output (MIMO)-antenna system incorporating a neutralization line for antenna port decoupling for wireless USB-dongle applications is proposed and it was found that the antenna port isolation can be effectively improved by removing only 1.5 mm long inwards from the top edge in the small ground portion.Abstract:
A printed two-multiple-input multiple-output (MIMO)-antenna system incorporating a neutralization line for antenna port decoupling for wireless USB-dongle applications is proposed. The two monopoles are located on the two opposite corners of the system PCB and spaced apart by a small ground portion, which serves as a layout area for antenna feeding network and connectors for the use of standalone antennas as an optional scheme. It was found that by removing only 1.5 mm long inwards from the top edge in the small ground portion and connecting the two antennas therein with a thin printed line, the antenna port isolation can be effectively improved. The neutralization line in this study occupies very little board space, and the design requires no conventional modification to the ground plane for mitigating mutual coupling. The behavior of the neutralization line was rigorously analyzed, and the MIMO characteristics of the proposed antennas was also studied and tested in the reverberation chamber. Details of the constructed prototype are described and discussed in this paper.read more
Citations
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Printed Multi-Band MIMO Antenna Systems and Their Performance Metrics
TL;DR: This work starts by defining the new required metrics to characterize MIMO antenna systems, along with some isolation-enhancement mechanisms that are used in these closely packed antennas.
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
Mutual Coupling Reduction Using F-Shaped Stubs in UWB-MIMO Antenna
TL;DR: A compact, high performance, and novel-shaped ultra-wideband (UWB) multiple-input multiple-output (MIMO) antenna with low mutual coupling with good agreement between the simulated and measured results is observed.
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
Compact Coradiator UWB-MIMO Antenna With Dual Polarization
Chun-Xu Mao,Qing-Xin Chu +1 more
TL;DR: In this paper, two compact coradiator multiple-input-multiple-out (MIMO) antennas operating in the UWB frequency band with dual polarization were proposed, where the radiator is shared by two antenna elements, which greatly reduce the overall size of the MIMO system.
References
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Journal ArticleDOI
Antenna diversity in mobile communications
TL;DR: The mutual resistance condition offers a powerful design tool, and examples of new mobile diversity antennas are discussed along with some existing designs.
Journal ArticleDOI
Exact representation of antenna system diversity performance from input parameter description
TL;DR: In this article, a simple formulation to compute the envelope correlation of an antenna diversity system is derived, which does not require the computation nor the measurement of the radiation pattern of the antenna system.
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Reduction of Mutual Coupling Between Closely-Packed Antenna Elements
TL;DR: In this article, a simple ground plane structure that can reduce mutual coupling between closely packed antenna elements is proposed and studied, which consists of a slitted pattern, without via's, etched onto a single ground plane and it is therefore low cost and straightforward to fabricate.
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Study and Reduction of the Mutual Coupling Between Two Mobile Phone PIFAs Operating in the DCS1800 and UMTS Bands
TL;DR: Several solutions are presented to reduce the mutual coupling between two planar inverted-F antennas working in close radiocommunication standards and positioned on a finite-sized ground plane modeling the printed circuit board (PCB) of a typical mobile phone.