Effects of Mutual Coupling on LTE MIMO Capacity for Monopole Array: Comparing Reverberation Chamber Tests and Drive Tests

Song, Hang; Bekaryan, Arthur; Schaffner, James H.; Hussain, Arif; Kildal, Per-Simon

doi:10.1109/lawp.2014.2367453

Cited by 18 publications

(10 citation statements)

References 12 publications

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“…Finally, the MIMO system capacity of N transmitting and receiving antennas is calculated by [26][27][28]…”

Section: Diversity/mimo Performance Parametersmentioning

confidence: 99%

Capacity and Efficiency Improvement of Mimo Antenna Systems for 5g Handheld Terminals

Abdelgwad¹,

Ali²

2020

PIER C

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The efficacy of including a defected ground structure (DGS) for mobile communication on a mobile phone PCB in improving the multiple input multiple output (MIMO) system performance is evaluated and demonstrated in the context of single and multiple-element two-port planar inverted-F antennas (PIFAs). The proposed scheme designed and developed for operation in the 3.5 GHz long term evolution (LTE) and future 5G frequency bands demonstrates efficiency improvement by 15% and capacity improvement by around 7% because of the significant reduction in mutual coupling between the antenna ports. Results in free space as well as next to a human head and hand phantom are presented.

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“…Finally, the MIMO system capacity of N transmitting and receiving antennas is calculated by [26][27][28]…”

Section: Diversity/mimo Performance Parametersmentioning

confidence: 99%

Capacity and Efficiency Improvement of Mimo Antenna Systems for 5g Handheld Terminals

Abdelgwad¹,

Ali²

2020

PIER C

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“…Recent technical issues on controlled reception pattern antenna (CRPA) arrays are mainly focused on the employment of more antenna elements in an electrically restricted area [14]. However, the increasing number of antenna elements causes mutual coupling that degrades the impedance matching characteristics and radiation efficiency due to undesired shifts in the resonance frequencies [5,6]. In addition, a typical rectangular patch antenna has frequency-sensitive characteristics due to its narrow matching bandwidth with an extremely steep reactance slope.…”

Section: Introductionmentioning

confidence: 99%

Design of Small CRPA Arrays with Circular Microstrip Loops for Electromagnetically Coupled Feed

Hur

Byun

Choo

2018

J Electromagn Eng Sci

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This paper proposes a design of small controlled reception pattern antenna (CRPA) arrays using circular microstrip loops with frequencyinsensitive characteristics. The proposed array consists of seven identical upper and lower circular loops that are electromagnetically coupled, which results in a frequency-insensitive behavior. To demonstrate the feasibility of the proposed feeding mechanism, the proposed array is fabricated, and its antenna characteristics are measured in a full-anechoic chamber. The operating principle of the proposed feeding mechanism is then interpreted using an equivalent circuit model, and the effectiveness of the circular loop shape is demonstrated by calculating near electromagnetic fields in proximity to the radiator. The results confirm that the proposed feeding mechanism is suitable to have frequency-insensitive behavior and induces strong electric and magnetic field strengths for higher radiation gain in extremely small antenna arrays.

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“…With regard to over-the-air (OTA) testing, studies on fading emulators [11], [12] and reverberation chambers [13], [14] have been conducted. However, a large investment and preparation of appropriate implementation space are required to construct a test environment using OTA apparatus.…”

Section: Introductionmentioning

confidence: 99%

Regression-Based Channel Capacity for the Evaluation of 2×2 MIMO Antennas

Honda

Kitamura

et al. 2017

IEICE Trans. Commun.

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A simple but efficient method for evaluating the channel capacity of 2 × 2 multiple-input multiple-output (MIMO) antenna systems is proposed. First, the channel capacity of a half-wavelength dipole array antenna is calculated using the Monte Carlo method by changing the incident-wave signal-to-noise power ratio, the power difference between two elements, and the correlation coefficient. Using the calculated results, a polynomial function is derived by multivariate regression analysis to estimate the channel capacity. The validity of the developed function is confirmed by comparing the channel capacity estimated by the developed function with that calculated by the Monte Carlo method using a MIMO array antenna operated under various scenarios, including antenna-human body electromagnetic interactions and radio-wave propagation environments, for future MIMO systems. The function is also validated by means of two experimental approaches: the use of radiation patterns measured in an anechoic chamber and the use of a spatial fading emulator that can create a two-dimensional fading environment.

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Effects of Mutual Coupling on LTE MIMO Capacity for Monopole Array: Comparing Reverberation Chamber Tests and Drive Tests

Cited by 18 publications

References 12 publications

Capacity and Efficiency Improvement of Mimo Antenna Systems for 5g Handheld Terminals

Capacity and Efficiency Improvement of Mimo Antenna Systems for 5g Handheld Terminals

Design of Small CRPA Arrays with Circular Microstrip Loops for Electromagnetically Coupled Feed

Regression-Based Channel Capacity for the Evaluation of 2×2 MIMO Antennas

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