Miniaturized dual band MIMO antennas for wireless application

doi:10.1109/ICNETS2.2017.8067917

Proceedings Article•DOI•

Miniaturized dual band MIMO antennas for wireless application

Pratibha Das¹•Institutions (1)

01 Mar 2017-pp 145-148

TL;DR: In this article, the authors designed a miniaturized and multiband MIMO antenna using slotting technique which can be used for many devices like cell phones, microwave radio relay.

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Abstract: The objective of this paper is to design a miniaturized and multiband MIMO antenna using slotting technique which can be used for many devices like cell phones, microwave radio relay. The MIMO antenna module consists of four micro strip antennas which are arranged in two MIMO antenna pairs. Reduction in size, multi-broadband, moderation in gain and good efficiency is obtained. The main aim is to reduce mutual coupling while optimizing the antenna size. The present work would be aimed at designing an antenna which is used mainly for wireless applications.

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Journal Article•DOI•

Antenna diversity in mobile communications

[...]

Rodney G. Vaughan, Jørgen Bach Andersen

01 Nov 1987-IEEE Transactions on Vehicular Technology

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.

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Abstract: The conditions for antenna diversity action are investigated. In terms of the fields, a condition is shown to be that the incident field and the far field of the diversity antenna should obey (or nearly obey) an orthogonality relationship. The role of mutual coupling is central, and it is different from that in a conventional array antenna. In terms of antenna parameters, a sufficient condition for diversity action for a certain class of high gain antennas at the mobile, which approximates most practical mobile antennas, is shown to be zero (or low) mutual resistance between elements. This is not the case at the base station, where the condition is necessary only. The mutual resistance condition offers a powerful design tool, and examples of new mobile diversity antennas are discussed along with some existing designs.

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1,423 citations

"Miniaturized dual band MIMO antenna..." refers background in this paper

...Antenna diversity in mobile applications-: The conditions for antenna diversity actions are found and examples of new mobile diversity antennas are discussed along with some existing designs[9]....
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Journal Article•DOI•

A Novel Multiband Planar Antenna for GSM/UMTS/LTE/Zigbee/RFID Mobile Devices

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Ting Zhang¹, RongLin Li¹, Guiping Jin¹, Gang Wei¹, Manos M. Tentzeris² - Show less +1 more•Institutions (2)

South China University of Technology¹, Georgia Institute of Technology²

12 Aug 2011-IEEE Transactions on Antennas and Propagation

TL;DR: In this article, a two-strip monopole and a meandered strip antenna was designed and developed for multiband planar antenna with a compact size for mobile devices, which has a bandwidth of 42% at the 900 MHz band and 53% at 1900 MHz band.

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Abstract: A new multiband planar antenna with a compact size is designed and developed for mobile devices. The proposed antenna consists of a two-strip monopole and a meandered strip antenna which occupy a compact area of only 15 mm × 42 mm. This planar antenna has a bandwidth of ~ 42% at the 900 MHz band and ~ 53% at the 1900-MHz band. The wide bandwidth at the low frequency is attributed to the mutual coupling of an S-shaped strip and an inverted-F strip which are separately printed on the two sides of a thin substrate, forming a two-strip monopole configuration. The bandwidth at the high frequency is enhanced by inserting a meandered strip which improves the impedance matching for the high-frequency band. The experimental results verify the simulations. The featured broad bandwidths over two frequency bands and the miniaturized size of the proposed antenna make it very promising for applications in wireless communication and wireless sensing devices.

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92 citations

"Miniaturized dual band MIMO antenna..." refers background or methods in this paper

...The antenna design proposed here takes in two antennas each of different designs, one which is conventional micro strip antenna with rectangular patch and the other having rectangular slits[2] in the base in addition to having slots on the patch and incorporating them in a single module [1] The module is created in such a way that the antennas are orthogonal to each other so as to reduce mutual coupling [3][4] and to radiate three or four frequencies....
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...MIMO antenna using resonance of ground planes for LTE mobile application-: Use of MIMO antennas for LTE mobile applications using resonance of ground planes while keeping the antennas small [2]....
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Journal Article•DOI•

Common Elements Wideband MIMO Antenna System for WiFi/LTE Access-Point Applications

[...]

Alishir Moradikordalivand, Tharek Abd Rahman, Mohsen Khalily

14 Aug 2014-IEEE Antennas and Wireless Propagation Letters

TL;DR: In this paper, a wideband multiple-input-multiple-output (MIMO) antenna system with common elements suitable for WiFi/2.4 GHz and Long Term Evolution (LTE)/2.6 GHz wireless access point (WAP) applications is presented.

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Abstract: A wideband multiple-input-multiple-output (MIMO) antenna system with common elements suitable for WiFi/2.4 GHz and Long Term Evolution (LTE)/2.6 GHz wireless access point (WAP) applications is presented. The proposed MIMO antenna system consists of four wideband microstrip feedline printed monopole antennas with common radiating element and a ring-shaped ground plane. The radiator of the MIMO antenna system is designed as the shape of a modified rectangle with a four-stepped line at the corners to enhance the impedance bandwidth. According to the common elements structure of the MIMO antenna system, isolation between the antennas (ports) can be challenging. Therefore, the ground plane is modified by introducing four slots in each corner to reduce the mutual coupling. For an antenna efficiency of more than 60%, the measured impedance bandwidth for reflection coefficients below -10 dB was observed to be 1100 MHz from 1.8 to 2.9 GHz. Measured isolation is achieved greater than 15 dB by using a modified ground plane. Also, a low envelope correlation coefficient (ECC) less than 0.1 and polarization diversity gain of about 10 dB with the orthogonal mode of linear polarization and quasi-omnidirectional pattern during the analysis of radiation characteristic are achieved. Therefore, the proposed design is a good candidate for indoor WiFi and LTE WAP applications due to the obtained results.

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89 citations

"Miniaturized dual band MIMO antenna..." refers background in this paper

...l [3][4] to s have been to increase 3....
[...]
...The presented paper talks about introducing slots in each corner of the ground plane to increase isolation and reduce mutual coupling [4]....
[...]
...The antenna design proposed here takes in two antennas each of different designs, one which is conventional micro strip antenna with rectangular patch and the other having rectangular slits[2] in the base in addition to having slots on the patch and incorporating them in a single module [1] The module is created in such a way that the antennas are orthogonal to each other so as to reduce mutual coupling [3][4] and to radiate three or four frequencies....
[...]

Journal Article•DOI•

A Novel Compact Dual-Band LTE Antenna-System for MIMO Operation

[...]

Ibra Dioum, Aliou Diallo, Sidi Mohamed Farssi¹, Cyril Luxey•Institutions (1)

Cheikh Anta Diop University¹

17 Jan 2014-IEEE Transactions on Antennas and Propagation

TL;DR: A novel compact dual-band antenna-system for LTE multi-input and multi-output (MIMO) mobile handsets using 3D Inverted-F- Antennas folded on the non-metalized part of the Printed Circuit Board (PCB).

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Abstract: In this communication, we present a novel compact dual-band antenna-system for LTE multi-input and multi-output (MIMO) mobile handsets. The radiators consist of 3D Inverted-F- Antennas (IFAs) folded on the non-metalized part of the Printed Circuit Board (PCB) and operating in the LTE 700 MHz band. A parasitic radiating element is also attached to the IFAs to operate in the LTE 2.5-2.7 GHz band. Two antennas are placed on a realistic PCB (100 × 40 mm2) for MIMO operation. Various antenna configurations are tested when moving their position on the PCB. Based on the highest port-to-port isolation criterion, two configurations are adopted and their performances are compared. Both simulated and measured results are shown to illustrate the MIMO capabilities of the proposed structures.

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71 citations

Journal Article•DOI•

A Compact, High Isolation and Wide Bandwidth Antenna Array for Long Term Evolution Wireless Devices

[...]

Mina Ayatollahi¹, Qinjiang Rao¹, D. Wang¹•Institutions (1)

BlackBerry Limited¹

05 Jul 2012-IEEE Transactions on Antennas and Propagation

TL;DR: Simulated and measured results show that the meandered isolating slot allows the antennas to achieve wider bandwidth, higher efficiency, higher isolation and better diversity performance, compared to other types of isolating slots.

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Abstract: A compact dual-port, multiple input-multiple output (MIMO) antenna array for handheld devices is introduced. The antenna structure consists of two quarter wavelength monopole slots etched on the ground plane of a printed circuit board (PCB) and a meandered slot cut between them. The meandered slot not only reduces the coupling between the two slot antennas, but also improves the bandwidth and efficiency of the array by acting as a radiating parasitic element. Simulated and measured results show that the meandered isolating slot allows the antennas to achieve wider bandwidth, higher efficiency, higher isolation and better diversity performance, compared to other types of isolating slots.

...read moreread less

58 citations

"Miniaturized dual band MIMO antenna..." refers background in this paper

...A compact, high isolation and wide bandwidth antenna array for long term evolution wireless devices-:The antenna structure consists of two quarter wavelength monopole slots etched on the ground plane of the PCB (printed circuit board) and meandered slot cut between them, which reduces coupling and increases bandwidth and efficiency of the array[8]....
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Miniaturized dual band MIMO antennas for wireless application

References

"Miniaturized dual band MIMO antenna..." refers background in this paper

"Miniaturized dual band MIMO antenna..." refers background or methods in this paper

"Miniaturized dual band MIMO antenna..." refers background in this paper

"Miniaturized dual band MIMO antenna..." refers background in this paper

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