2024 : 4 : 13
Hossein Malekpour Shahraki

Hossein Malekpour Shahraki

Academic rank: Assistant Professor
ORCID: https://orcid.org/0000-0002-2788-1624
Education: PhD.
ScopusId: 55509638100
Faculty: Engineering
Address: Arak University
Phone:

Research

Title
High-isolated broadband eight-element linear multi-input multi-output array over artificial magnetic surface for wireless and sub-6 GHz 5G communications
Type
JournalPaper
Keywords
artificial magnetic conductor (AMC), MIMO array, printed antenna, WLAN/WiMAX
Year
2022
Journal International Journal of Communication Systems
DOI
Researchers Hossein Malekpour Shahraki ، Ali Abolmasoumi

Abstract

A low-profile eight-element printed dipole antenna (PDA) array backed by broadband rhomboid artificial magnetic conductor (AMC) is introduced for wireless communication systems. By loading a 4  27 AMC reflector into the eight-element array of PDA, a low-profile wideband structure with enhanced radiation properties is achieved. The measured S parameters show the broad bandwidth from 4.75 to 7.05 GHz in C-band with enhanced gains of eight elements (more than 8 dBi) and the suitable isolation between the array elements of more than 23 dB for multi-input multi-output (MIMO) systems. The suggested PDA with a pair of the microstrip meandered folded poles excited by an E-shaped microstrip feedline expands the bandwidth in the range of 5.85–6.95 GHz (S11 ≤ 10 dB). The novel AMC unit cell is realized based on the recognized method as rhomboid coupled parasitic patches. The rhomboid AMC design operates at 6.26 GHz with an AMC bandwidth of 5.20–7.24 GHz (32.8%). Then, the suggested rhomboid AMC surface as a reflector of the antenna is inserted into the PDA to exhibit 10 dB measured impedance bandwidth from 4.94 to 6.93 GHz (more than 33%) for wireless local area network (WLAN) and worldwide interoperability for microwave access (WiMAX) applications. The suggested PDA with AMC compared to the PDA without AMC exhibits a size reduction of 34%, enhanced gain up to 8 dBi, and excellent impedance matching (at least 20 dB) with directional radiation patterns.