Miniaturized circular antennas for MIMO communication systems &amp;#x2014; pattern diversity

Jayasooriya, Chandana K. K.; Kwon, Hyuck M.; Bae, Seok; Hong, Yang‐Ki

doi:10.1109/wsa.2010.5456422

Cited by 9 publications

(7 citation statements)

References 8 publications

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“…Multiple Input Multiple Output (MIMO) technology improves the data throughput of wireless and mobile communication systems by deploying radio transceivers with multiple antennas to transmit and receive RF signals in rich scattered wireless environments . MIMO techniques accomplish the task of improvement in data throughput and system capacity through spatially separated multiple wireless channels working at same carrier frequency (uncorrelated signals) and without additional transmit power requirements in Nonline of sight communications . MIMO techniques are also very useful to improve the performance of wireless and mobile communication systems by minimizing the multi path propagation effect …”

Section: Introductionmentioning

confidence: 99%

Dual port disc monopole antenna for wide‐band MIMO‐based wireless applications

Nawaz

Tekin

2017

Micro & Optical Tech Letters

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Section: Introductionmentioning

confidence: 99%

Dual port disc monopole antenna for wide‐band MIMO‐based wireless applications

Nawaz

Tekin

2017

Micro & Optical Tech Letters

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“…Multiple-input-multiple output (MIMO) system presents a solution to overcome these hindrances [3]. The use of multiple antennas in transmitter and receiver increases transmission range and channel capacity without increasing the overall bandwidth and power requirements [4]. Therefore, UWB-MIMO technology is a promising high data rate technique ubiquitously employed in wireless personal area networks [5].…”

Section: Introductionmentioning

confidence: 99%

Compact reconfigurable multiple‐input‐multiple‐output antenna for ultra wideband applications

Jafri¹,

Saleem²,

Shafique

et al. 2016

IET Microwaves, Antennas & Propagation

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This study presents a two element multiple‐input‐multiple‐output (MIMO) reconfigurable antenna for ultra wideband (UWB) applications. Each individual antenna is composed of a modified square radiating patch. The array can be reconfigured by either placing antenna elements orthogonally for corner installation or by placing them back‐to‐back for compact three‐dimensional (3D) modules. The design is fabricated on FR4 substrate having dimensions 40 mm × 37.5 mm × 1.5 mm. Port isolation greater than 20 dB in the complete band is achieved by introducing an efficient decoupling structure in the ground plane. Performance parameters such as S‐parameters, radiation patterns, envelope correlation coefficient, total active reflection coefficient and channel capacity loss indicate that the proposed MIMO design is a suitable candidate for high data rate UWB applications. The proposed solution is suitable for non‐planar designs around wall corners or for compact 3D structures where side‐by‐side placement is not practical due to size constraints.

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“…Instead of using two stacked CPAs, a single CPA with two ports was used to excite TM 13 (mode 3) or TM 14 (mode 4), by varying the radius of the radiator, which was achieved by using PIN-diodes. A miniaturized single CPA (Ferrite 1-CPA) and a single annular ring antenna (ARA) (Ferrite 1-ARA) with two feed probes were studied in [13][14][15]. A compact dualmode (TM 01 and TM 11 ) microstrip patch antenna was also introduced in [16].…”

Section: Introductionmentioning

confidence: 99%

“…Since higher-order modes must be excited in these antennas to achieve orthogonal radiation patterns, for a given frequency of operation (f c ) and mode number, the radius of the antenna is fixed [17]. In this case, the radius of the antenna can only be reduced by increasing the permeability and permittivity of the substrate material, which was studied in [13][14][15]. The drawback is the associated higher losses of ferrite materials, which significantly deteriorate antenna efficiency.…”

Section: Introductionmentioning

confidence: 99%

On Performance of High-Efficiency Ferrite Meander Antenna (Hema) for Mimo Communications

Jayasooriya

Kwon²,

Syslo³

et al. 2013

PIER B

Self Cite

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Abstract-This paper presents a high-efficiency ferrite meander antenna (HEMA), which can be used to realize a 2 × 2 multipleinput-multiple-output (MIMO) communication system when it is used at both the transmitter and the receiver ends. This antenna is designed to operate at 2.45 GHz center frequency (f c ). It consists of two spatially separated half-cycle microstrip meander structures. Ferrite material is not used for the entire substrate, only beneath each meander structure. A standard FR-4 substrate is utilized as a system board. Impedance bandwidth and radiation patterns of the fabricated antenna are measured and compared with those of the simulation results. The −10 dB impedance bandwidth of the fabricated antenna is 262 MHz, whereas the simulated bandwidth is 235 MHz. According to the simulations, the gain and efficiency of the antenna are 2.2 dB and 81%, respectively. The efficiency of the antenna is confirmed by measurements. By using the simulated radiation patterns, correlation between the radiation patterns is calculated and employed in the generation of the channel matrix. Mutual impedance of the antennas and antenna efficiency are also included in the channel matrix, which in turn is used in bit error rate (BER) and ergodic capacity simulations. BER and ergodic capacity are utilized as performance metrics. The effect of antenna efficiency, mutual impedance of the antennas, and correlation between radiation patterns on system performance are presented.

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Miniaturized circular antennas for MIMO communication systems — pattern diversity

Cited by 9 publications

References 8 publications

Dual port disc monopole antenna for wide‐band MIMO‐based wireless applications

Dual port disc monopole antenna for wide‐band MIMO‐based wireless applications

Compact reconfigurable multiple‐input‐multiple‐output antenna for ultra wideband applications

On Performance of High-Efficiency Ferrite Meander Antenna (Hema) for Mimo Communications

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