Rectangular monopole antenna with arrow-shaped slot etching for UWB-MIMO application

Thongbor, P.; Ruengwaree, Amnoiy; Pirajnanchai, V.; Naktong, Watcharaphon; Fhafhiem, N.

doi:10.1109/ecticon.2016.7561381

Cited by 4 publications

(8 citation statements)

References 7 publications

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“…In [15], it was designed by placing a rectangular patch antenna with four different angular positions as shown in Fig. 9.…”

Section: Element Spacing and Placing Positionmentioning

confidence: 99%

“…This paper proposes a four-port rectangular monopole antenna for the UWB-MIMO application. In previous researches [14][15][16][17][18][19][20], a rectangle monopole antenna with step etching technique on a ground plane [21][22][23] was selected for an antenna structure to design the UWB-MIMO antenna [24], but it had some parameters that were not acceptable for the slot etching technique on radiating patch with arrow-shaped improvement [14]. After that, it was designed into a two-port antenna placed in four different positions for a MIMO antenna as defined by the Federal Communication Commission (FCC).…”

Section: Introductionmentioning

confidence: 99%

“…After that, it was designed into a two-port antenna placed in four different positions for a MIMO antenna as defined by the Federal Communication Commission (FCC). The orthogonal position is the best for performance [15] and antenna characteristics [25][26][27][28]. The homogeneous elements and angular variation techniques were applied to the four-port antenna for the inclination of mutual coupling and augmentation of the envelope correlation coefficient [29][30][31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

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Four-Port Rectangular Monopole Antenna for Uwb-Mimo Applications

Ruengwaree¹

2020

PIER B

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This paper proposes a four-port rectangular monopole antenna for ultra-wideband multipleinput multiple-output (UWB-MIMO) applications. The proposed antenna was designed by using step etching on the ground plane and arrow-shaped slot etching on a radiating patch to enhance bandwidth and improve performances. The homogeneous elements and angular variation techniques were applied to reduce mutual coupling between multiple antenna elements. The structural simulation technique used Computer Simulation Technology (CST) program to analyze the antenna characteristics such as reflection coefficient, group delay, mutual coupling, envelope correlation coefficient, and radiation patterns. The measured results were found to cover a frequency range of 3.1-10.6 GHz for UWB communications. The envelope correlation coefficient for the MIMO system was obtained under 0.001 which is less than the specific parameters of UWB-MIMO antennas. The radiation pattern was bidirectional. Also, the efficiency of the four-port antenna was more than 85.70%.

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“…In [15], it was designed by placing a rectangular patch antenna with four different angular positions as shown in Fig. 9.…”

Section: Element Spacing and Placing Positionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Four-Port Rectangular Monopole Antenna for Uwb-Mimo Applications

Ruengwaree¹

2020

PIER B

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“…Therefore, it is always a challenging task to design compact, high performance mobile MIMO terminals. Motivated by this challenging task, a series of techniques have been developed to realize a MIMO antenna system within a limited space: by inserting parasitic slots and resonators between MIMO elements, adding a parasitic element, and using various diversity techniques (spatial, polarization, and pattern diversity), the isolation between antenna elements can be significantly enhanced to 10 dB. All these designs share a common characteristic that they have no large ground planes that used to emulate the radio frequency (RF) system circuit boards in handsets.…”

Section: Introductionmentioning

confidence: 99%

Conceptual design and implementation of a four‐element MIMO antenna system packaged within a metallic handset

Gao

2018

Micro & Optical Tech Letters

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The conceptual design of a multiple input multiple output (MIMO) antenna system packaged within a metallic handset for future wireless communications is proposed, simulated, and implemented. The presented MIMO antenna system is composed of four‐identical slotted microstrip magnetic dipoles. The whole antenna system is installed within an emulated handset with a metallic back cavity and frames. A few antenna prototypes are fabricated and measured to validate the conceptual design. Owning to the inherent microstrip magnetic dipole configuration, the packaged MIMO antenna system exhibits a good impedance matching, a high element isolation, an acceptable average radiation efficiency of about 40%, and a wide beam coverage performance at 3.5 GHz‐band. Compared to conventional single input single output (SISO) wireless communication systems, the channel capacity can be nearly tripled by employing the designed MIMO handset.

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“…A design in which the MIMO antenna is isolated is crucial for high performance. Therefore, studies have explored MIMO antenna decoupling technology to improve the methods of isolating MIMO antennas, such as stub [13][14][15][16], defected ground structure [17,18], neutralization line [19,20], electromagnetic band gap [21], and polarization [22][23][24][25] methods. The stub and notched block designs are used in the present study to reduce the pattern field overlapping between the four elements in the MIMO antenna, that is, between Ant1 and Ant2 and between Ant3 and Ant4.…”

Section: Introductionmentioning

confidence: 99%

Watchstrap-Embedded Four-Element Multiple-Input–Multiple-Output Antenna Design for a Smartwatch in 5.2–5.8 GHz Wireless Applications

Sun

2018

International Journal of Antennas and Propagation

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This paper presents a compact four-element multiple-input-multiple-output (MIMO) antenna design operating within the WiFi 802.11 ac bands (5.2-5.84 GHz) for a smartwatch. The antenna is fabricated using a polyamide substrate and embedded into the strap of a smartwatch model; the strap is created using three-dimensional etching of plastic materials. The four-element MIMO antenna is formed by four monopole antennas, has a simple structure, and is connected to the system ground plane of the smartwatch. Due to the stub and notched block between two antennas and the slit in the system ground, the four-element MIMO antenna exhibits favorable isolation. Moreover, the envelope correlation coefficient of the antennas is considerably lower than 0.005 in the operating band. The measured −6 dB impedance bandwidths of the four elements of the antenna (Ant1-Ant4) with the human wrist encompass the WiFi 802.11 ac range of 5.2-5.84 GHz; moreover, an isolation of more than 20 dB is achieved. The measured antenna efficiency with and without a phantom hand are 45%-55% and 93%-97%, respectively.

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Rectangular monopole antenna with arrow-shaped slot etching for UWB-MIMO application

Cited by 4 publications

References 7 publications

Four-Port Rectangular Monopole Antenna for Uwb-Mimo Applications

Four-Port Rectangular Monopole Antenna for Uwb-Mimo Applications

Conceptual design and implementation of a four‐element MIMO antenna system packaged within a metallic handset

Watchstrap-Embedded Four-Element Multiple-Input–Multiple-Output Antenna Design for a Smartwatch in 5.2–5.8 GHz Wireless Applications

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