Compact four port slot based MIMO antenna with isolation enhancement

Rajmohan, Rajendirane; Vishvaksenan, K. S.; Kalidoss, R.

doi:10.1080/00207217.2021.1908625

Cited by 9 publications

(7 citation statements)

References 15 publications

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“…Figure 12 shows a graph of channel capacity loss. CCL can be calculated using equation (5). The CCL values are 0.16, 0.25, 0.25, 0.27, and 0.23 bits/sec/Hz at 6 GHz, 8 GHz, 10 GHz, 12 GHz, and 9 GHz, respectively.…”

Section: Channel Capacity Loss (Ccl)mentioning

confidence: 99%

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Isolation Enhancement in UWB-MIMO Antenna Using Decoupling Structure

Srinivasa

Ramya

Sireesha

2022

Preprint

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This article presents a compact UWB MIMO antenna. The proposed MIMO antenna covers bandwidth of 3.9–13.4 GHz. The proposed MIMO antenna gives good isolation between two elements from 8-13.4 GHz. In order to reduce mutual coupling over entire operating band a novel decoupling is inserted between them. It provides minimum of -18 dB isolation over entire operating band. The performance of the MIMO antenna is further evaluated in terms of gain, ECC, radiation pattern, and diversity gain.

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Section: Channel Capacity Loss (Ccl)mentioning

confidence: 99%

“…[4] To reduce mutual coupling, a cross-shaped structure is adopted. A modulated microstrip line embedded with circular patches of various diameters is used in [5] to improve broadband isolation. The periodic EBG structure is used in [6] to prevent parallel elements from mutually connecting.…”

Section: Introductionmentioning

confidence: 99%

Isolation Enhancement in UWB-MIMO Antenna Using Decoupling Structure

Srinivasa

Ramya

Sireesha

2022

Preprint

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“…It was originally designed for radar imaging, but because of technical recent developments, this now allows users to access high-speed data transmission services. Ultra-wideband (UWB) technique is increasingly used because ofimany advantages which includes powerful anti-performance, consume less power, high positioning precision, good concealment, large communication capacity, and low cost [1][2][3]. Researchers have been paying close attention to design MIMO antennas which is made up of two structurally symmetrical antennas and is used to cover an 3-9 GHz impedance bandwidth with a VSWR < 2 [1].…”

Section: Introductionmentioning

confidence: 99%

“…Ultra-wideband (UWB) technique is increasingly used because ofimany advantages which includes powerful anti-performance, consume less power, high positioning precision, good concealment, large communication capacity, and low cost [1][2][3]. Researchers have been paying close attention to design MIMO antennas which is made up of two structurally symmetrical antennas and is used to cover an 3-9 GHz impedance bandwidth with a VSWR < 2 [1]. To utilize ultra-wide-band spectrum authors [1][2][3][4][5] have designed only single element antennas but these antennas are facing the problem of multi-path fading so, this problem can be resolved by using more than one element of antenna on the same substrate.…”

Section: Introductionmentioning

confidence: 99%

“…Researchers have been paying close attention to design MIMO antennas which is made up of two structurally symmetrical antennas and is used to cover an 3-9 GHz impedance bandwidth with a VSWR < 2 [1]. To utilize ultra-wide-band spectrum authors [1][2][3][4][5] have designed only single element antennas but these antennas are facing the problem of multi-path fading so, this problem can be resolved by using more than one element of antenna on the same substrate. In recent, researchers have designed MIMO antennas for ultra-wideband applications in [2]- [5].…”

Section: Introductionmentioning

confidence: 99%

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A Spear-head shaped UWB MIMO Antenna with triple notch-based characteristics for Wireless applications

Kumari

Porwal

Kumar

et al. 2022

IOP Conf. Ser.: Mater. Sci. Eng.

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In this article, a spearhead shaped dual element ultra-wide band (UWB) multiple input multiple output (MIMO) antenna with three notched bands is designed. The proposed antenna has the dimensions (28*18*1.6) mm3. To achieve the three notch a L-shaped and spoon-shaped slots are etched out from the rhombic shape radiating patch for application ARN, INSAT at (4.17-4.9) GHz and satellite communication at (7.1-7.75) GHz respectively and other inverted U-shaped slot is etched out from the feed line which achieves X-band application (8.5-9.6)GHz. In addition to this, the proposed antenna impedance bandwidth ranges from 3-11.3GHz with voltage standing wave ratio (VSWR>2) only for the selected notch band. The antenna achieves nil distortion with suitable omnidirectional radiation pattern which is good for ultra-wide band application. To show the diversity performance of the proposed antenna, the proposed antenna offers good isolation (s12/s21<-19db) with envelope correlation coefficient (ECC<0.005) and diversity gain of nearly 10db. Therefore, the proposed antenna with rejection capability is suitable for UWB application.

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Compact ACS-fed MIMO antenna with dual-band notch characteristics for UWB applications

Lu,

Lin,

Wang

et al. 2023

Int. J. Microw. Wireless Technol.

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An ultra-wideband (UWB) and compact-size four-port multiple input multiple output (MIMO) antenna with a footprint of 34 mm × 34 mm fed by an asymmetric coplanar strip (ACS) is investigated. The proposed antenna is composed of four orthogonally placed identical modified elliptical-shaped radiators and achieves an impedance bandwidth of 3.4–12.2 GHz. By etching two inverted L-shaped slots in the radiator element, WLAN band and X-band are rejected in the operating communication range. Because of the usage of a meander line decoupler, the isolation enhancement at the 8–12 GHz band is achieved and the isolation is more than 18 dB for most of the UWB range. The performance of the proposed antenna is studied in terms of isolation between each port, radiation pattern, current distribution, gain, envelope correlation coefficient, diversity gain, and total active reflection coefficient. The compact size and reduced complexity make the proposed design highly suitable for portable devices.

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Compact four port slot based MIMO antenna with isolation enhancement

Cited by 9 publications

References 15 publications

Isolation Enhancement in UWB-MIMO Antenna Using Decoupling Structure

Isolation Enhancement in UWB-MIMO Antenna Using Decoupling Structure

A Spear-head shaped UWB MIMO Antenna with triple notch-based characteristics for Wireless applications

Compact ACS-fed MIMO antenna with dual-band notch characteristics for UWB applications

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