A Compact Dual Band Mimo Antenna With Improved Isolation for Wi-Max and Wlan Applications

Nirmal, Pratima; Nandgaonkar, Anil; Nalbalwar, Sanjay L.; Gupta, and Rajiv Kumar

doi:10.2528/pierm18033104

Cited by 29 publications

(23 citation statements)

References 18 publications

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“…The comparisons between the proposed antenna and the previous reported MIMO antennas are listed in Table 2. Compared with [9][10][11][12], the proposed antenna has a smaller size and higher isolation. Compared with [6,7,10], the proposed antenna shows larger bandwidth and higher isolation.…”

Section: Resultsmentioning

confidence: 99%

“…However, compact size results in strong electromagnetic coupling and weak isolation between antenna elements. The isolation performance of MIMO antennas can be enhanced by loading SRRs [1,2], neutralizing line [3][4][5], Y-shape isolator element [6], a wide slot and a pair of narrow slots [7], meandering-line resonator [8], bent T-shaped resonator [9], and an elliptical slot and a rectangular parasitic strip [10]. There are also some novel structures such as reconfigurable MIMO antenna [11] and simple decoupling structure [12].…”

Section: Introductionmentioning

confidence: 99%

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A Compact Multiband Mimo Antenna for Ieee 802.11 a/B/G/N Applications

Wu¹,

Zhi²,

Chen³

et al. 2019

PIER Letters

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A compact multiband multiple-input-multiple-output (MIMO) antenna for WLAN applications is presented in this paper. The proposed MIMO antenna consists of two symmetric monopole radiating elements designed to operate over 2.45, 5.2, and 5.8 GHz bands. The isolation is enhanced by using several techniques such as parasitic elements and defected ground structure. The measured S 11 < −10 dB is obtained over 2.36-2.68 GHz and 4.81-5.95 GHz, which can cover IEEE 802.11 a/b/g/n frequency bands (2.4-2.4835 GHz, 5.15-5.35 GHz, and 5.725-5.875 GHz). The measured isolation values S 21 are less than −24 dB and −27 dB over the lower and higher frequency bands, respectively. The envelope correlation coefficient (ECC) of the proposed antenna is less than 0.027 and 0.005 over the lower and higher operating bands, respectively. The overall size of the proposed antenna is 50 × 30 × 1.59 mm 3. The proposed antenna is a good candidate for IEEE 802.11 a/b/g/n applications.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Compact Multiband Mimo Antenna for Ieee 802.11 a/B/G/N Applications

Wu¹,

Zhi²,

Chen³

et al. 2019

PIER Letters

View full text Add to dashboard Cite

show abstract

“…The design of isolation mechanism plays a key part in the whole process because the antenna element cannot be independent within a limited space. So far, numerous MIMO antennas with dualband have been proposed in [3][4][5][6][7][8][9][10][11][12][13][14]. In [3], the method of defected ground structure (DGS) combined with meander-lines results in the isolation increasing to above 15 dB by disturbing the surface current flow.…”

Section: Introductionmentioning

confidence: 99%

A CPW-Fed Dual-Band Mimo Antenna With Enhanced Isolation for 5g Application

Zhao¹

2020

PIER M

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In this paper, a dual-band Multiple Input Multiple Output (MIMO) antenna for fifthgeneration (5G) band (3.3-3.6 GHz and 4.8-5.0 GHz) is presented. The proposed MIMO antenna fed by coplanar waveguide (CPW) contains two symmetric antenna elements with two inverted L-shaped stubs. High isolation is successfully acquired by adopting a double-Y-shaped stub and partial ground plane. To obtain compactness, the antenna printed on an FR4 substrate has two triangle corners cut off. To study the performance, the antenna is simulated by Ansoft HFSS 13.0, and then fabricated and tested. The measurement results demonstrate that the antenna has achieved impedance bandwidths (S 11 < −10 dB) of 790 MHz (3.08-3.87 GHz) and 880 MHz (4.7-5.58 GHz) with fractional bandwidths of 22.7% and 15.8%, respectively, which covers 3.45/4.9 GHz 5G bands. Meanwhile, the measurement results exhibit an enhanced isolation more than 20 dB, a low envelope correlation coefficient (ECC) below 0.001, an average gain better than 2 dB, and a stable radiation pattern within operation bands. In addition, the parameters including efficiency, DG, CCL, MEG, and TARC are also analysed. The simulated and measured results indicate that the proposed MIMO antenna can be applied to 5G communication system.

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“…Several methods have been devised to design a solitary radiating structure to operate on a number of bands instead of supporting many applications dedicated antennas in a particular device. This leads to the evolution of antennas resonating at multiple frequencies [10][11][12][13][14][15][16][17][18][19]. A dual band dual polarized high isolation antenna offering more than 95% efficiency is proposed in [10].…”

Section: Introductionmentioning

confidence: 99%

“…A dual band dual polarized high isolation antenna offering more than 95% efficiency is proposed in [10]. Two element dual-band MIMO antenna with 20 dB isolation is stated in [11] where, each radiating element is F-shaped monopole while the isolation mechanisms consist of an elliptical slot and a parasitic patch. A microstrip line fed dual-band antenna using two unequal quarter wavelength slots featuring as radiators is proposed in [12].…”

Section: Introductionmentioning

confidence: 99%

A Simple Tri-Band Mimo Antenna Using a Single Ground Stub

Chaudhari¹,

Gupta²

2018

PIER C

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In this paper, a simple and compact tri-band multiple-input-multiple-output (MIMO) antenna for wireless applications is proposed. The antenna is composed of two symmetric monopoles placed a distance of 0.106λ 0 and occupies 0.26λ 0 × 0.25λ 0 board area. The tri-arm monopole offers operation over 2.1-2.7 GHz, 3.3-3.7 GHz and 4.9-5.35 GHz with percentage impedance bandwidth of 25%, 11.4% and 8.7%, respectively. An isolation greater than 20 dB is achieved by integrating a stub in the ground plane and adding a stub in the feed line. The structure exhibits stable gain and radiation patterns. Various performance metrics including envelope correlation coefficient (ECC), diversity gain (DG) and mean effective gain (MEG) are measured.

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A Compact Dual Band Mimo Antenna With Improved Isolation for Wi-Max and Wlan Applications

Cited by 29 publications

References 18 publications

A Compact Multiband Mimo Antenna for Ieee 802.11 a/B/G/N Applications

A Compact Multiband Mimo Antenna for Ieee 802.11 a/B/G/N Applications

A CPW-Fed Dual-Band Mimo Antenna With Enhanced Isolation for 5g Application

A Simple Tri-Band Mimo Antenna Using a Single Ground Stub

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