A Compact Four-Element MIMO/Diversity Antenna With Enhanced Bandwidth

A Compact Four-Element MIMO/Diversity Antenna With Enhanced Bandwidth

In this letter, a four-element wideband multiple-input-multiple-output (MIMO) configuration consisting of inverted L-monopole antenna (ILA) elements is proposed. An additional low-frequency operating mode arises in the MIMO system due to symmetric arrangement of elements with interconnected ground,...

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Veröffentlicht in:IEEE antennas and wireless propagation letters 2017-01, Vol.16, p.2469-2472
Hauptverfasser: Sarkar, Debdeep, Srivastava, Kumar Vaibhav
Format: Artikel
Sprache:eng
Schlagworte:
Antenna measurements
Antenna radiation patterns
Antennas
Bandwidth
Bandwidth enhancement
Bandwidths
Broadband
Correlation coefficients
Decoupling
Gain
interconnected ground
inverted L-monopole antenna (ILA)
Microstrip antennas
MIMO
MIMO (control systems)
multiple-input–multiple-output (MIMO)
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Beschreibung
Zusammenfassung:In this letter, a four-element wideband multiple-input-multiple-output (MIMO) configuration consisting of inverted L-monopole antenna (ILA) elements is proposed. An additional low-frequency operating mode arises in the MIMO system due to symmetric arrangement of elements with interconnected ground, apart from the resonance of the isolated ILA. Utilizing this mode, the proposed MIMO antenna operates in wide frequency range of 2.70-4.94 GHz (impedance bandwidth = 58.6%). The proposed four-element MIMO system occupies compact total area of 0.13λ 0 2 (λ 0 = highest operating wavelength) and has no complex decoupling scheme. Satisfactory interelement isolation (≥11 dB) and directional pattern with average gain ≈4 dBi are achieved throughout the operating band of the proposed MIMO antenna. Furthermore, envelope correlation coefficient
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2017.2724439