Dual Monopole Frequency Reconfigurable Antenna for MIMO 5G sub-6 GHz Mobile Terminal

In this paper, a Dual Monopole Frequency Reconfigurable Antenna (DMFRA) for two port Multiple Input Multiple Output (MIMO) Fifth Generation (5G) sub-6 GHz mobile terminal is presented. A combination of dual monopole strips is implemented at a port, respectively to achieve tunable and fixed resonant...

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Bibliographic Details
Published in:Journal of physics. Conference series 2021-07, Vol.1962 (1), p.12042
Main Authors: Padmanathan, Surentiran, Al-Hadi, Azremi Abdullah, Soh, Ping Jack, Al-Bawri, Samir Salem
Format: Article
Language:English
Subjects:
5G Sub-6GHz
Antennas
Correlation coefficients
frequency reconfigurable
MIMO
mobile terminal
monopole antenna
Monopoles
Mutual coupling
Reconfiguration
Resonant frequencies
Varactor diodes
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Summary:In this paper, a Dual Monopole Frequency Reconfigurable Antenna (DMFRA) for two port Multiple Input Multiple Output (MIMO) Fifth Generation (5G) sub-6 GHz mobile terminal is presented. A combination of dual monopole strips is implemented at a port, respectively to achieve tunable and fixed resonant frequencies. Varactor diode is utilized in this design to perform the frequency reconfiguration. Dual tunable resonant frequencies at the lower band (1690 MHz to 2200 MHz) and higher band (4400 MHz to 5400 MHz) are created by the monopole branch which accommodates the varactor diode. On the other hand, a fixed frequency band at 2400 MHz with -10 dB bandwidth of 450 MHz is achieved by another monopole branch without variable diode. Maximum realized gain achieved at both lower and higher reconfigurable frequency bands and fixed frequency band are 2.73 dB, 3.8 dB and 2.57 dB, respectively. Besides that, high isolation between 2 DMFRAs decreases the mutual coupling to result in less than 0.1 of the Envelope Correlation Coefficient (ECC). In addition to its frequency reconfiguration capability and low ECC, the proposed MIMO antenna is considered suitable for potential 5G mobile terminal applications.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1962/1/012042