Isolation enhancement of densely packed array antennas with periodic MTM-photonic bandgap for SAR and MIMO systems

Mohammad Alibakhshikenari,Panchamkumar Shukla,Raed Abd-Alhameed,Ernesto Limiti,Chan H See,Francisco Falcone,Karim Quazzane,Naser Ojaroudi Parchin,Bal S Virdee

doi:10.1049/iet-map.2018.5747

Abstract

Isolation enhancement of densely packed array antennas with periodic MTM-photonic bandgap for SAR and MIMO systems

Highlights

One of the features of photonic or electromagnetic bandgap (PBG/EBG) structures is their ability to suppress surface currents within their bandgap [1]
photonic bandgap (PBG) structures have been extensively used to improve the performances of array antennas, e.g. this can be achieved by inserting PBG structures between antenna elements in arrays to suppress mutual coupling that exists between the elements
To date only a few works have been published on investigating isolation enhancement between radiating elements in a larger array antenna, which is crucial to the performance of multiple-input multiple-output (MIMO) and radar systems

Summary

INTRODUCTION

One of the features of photonic or electromagnetic bandgap (PBG/EBG) structures is their ability to suppress surface currents within their bandgap [1] This property can be exploited to reduce the mutual EM coupling between radiating elements resulting from surface wave currents over the antenna [2]. PBG structures have been extensively used to improve the performances of array antennas, e.g. this can be achieved by inserting PBG structures between antenna elements in arrays to suppress mutual coupling that exists between the elements. Results reveal the effectiveness of the MTM-PBG layer in suppressing surface wave propagations between the radiating elements, and thereby enhancing isolation between T/R patches

DESIGN OF PBG STRUCTURE

CONCLUSIONS

Findings

Method