A Compact Mimo Antenna With Electromagnetic Bandgap Structure for Isolation Enhancement

Abstract

In this paper, a compact MIMO antenna with an electromagnetic bandgap structure is proposed for isolation enhancement. The proposed antenna design is coupled with an electromagnetic bandgap (EBG) structure to minimize mutual coupling between the antenna elements and to enhance the performance of the MIMO antenna configuration. The antenna is fabricated on an FR4 substrate having a dimension of (27.9 × 38 × 1.6 mm 3 ). The EBG structure is analyzed, and the effect on antenna performance is studied using parametric analysis. The antenna is fabricated, and the measured results are compared with simulated ones. The antenna achieves a reduction in transmission coefficient |S 21 | ≥ 16 dB for simulated and |S 21 | ≥ 25 dB for measured results, and attains the minimum ECC of 0.09 which is very close to the ideal value of zero and hence makes it a better choice for MIMO applications.

Design of four-element MIMO antenna system for Intelligent Internet of Everything (IIoE)

“…A Compact MIMO antenna with Electromagnetic Band gap (EBG) structure for isolation enhancement has been presented in ref. [12]. The Transmission Line Decoupling Network (TLDN) technique is presented in ref.…”

Low-Profile UWB-MIMO Antenna System with Enhanced Isolation Using Parasitic Elements and Metamaterial Integration

“…In [23], a coupling coefficient of −25 dB was achieved using electromagnetic-band-gap (EBG) structures printed between the radiators of a two-port MIMO antenna. The effect of the number of EBG cells on the mutual-coupling reduction is analyzed in [24]. In [25], the decoupling increased from 7.81 dB to more than 20 dB over a large bandwidth via the introduction of the neutralization line without affecting the gain or radiation pattern; this technique was also used in [26][27][28].…”