A Compact Four Elements Self-Isolated MIMO Antenna for C-Band Applications
2023 IEEE 27th Workshop on Signal and Power Integrity (SPI)(2023)
Abstract
This study introduces a four-element MIMO antenna that is self-isolated and appropriate for use in C-band applications for satellite communication. The antenna consists of a cross-shaped slot positioned in the center of the antenna along the chords and four T-shaped slots placed on the four main sides of the patch. The design process involved using a 3.2 mm thick FR4 substrate with a relative permittivity of 4.4 and optimizing the antenna dimensions before fabrication. The slots on the patch are responsible for creating the desired impedance bandwidth and generating remarkable isolation between the ports. Therefore, the antenna structure does not require additional elements for decoupling purposes. The experimental results show that the proposed MIMO antenna exhibits a broad impedance bandwidth ranging from 6.62 to 7.12 GHz, isolation better than 15.3 dB, ECC less than 0.008, TARC less than −5 dB, and realized peak gain of 5.77 dB.
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Key words
Self-Isolated, MIMO Antenna, C-Band, ECC, TARC
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