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
Analysis of 2  2 MIMO array loaded by artificial magnetic conductor with improved gain, isolation, and bandwidth using equivalent transmission line model for indoor wireless base station
Type
JournalPaper
Keywords
artificial magnetic conductor, electromagnetic band gap, multiple-input multiple-output, wideband AMC, printed antenna
Year
2022
Journal International Journal of RF and Microwave Computer-Aided Engineering
DOI
Researchers Hossein Malekpour Shahraki

Abstract

A low profile printed dipole antenna (PDA) backed by broadband Giuseppe Peano fractal artificial magnetic conductor (AMC) is introduced for wireless communications. First, a suggested PDA with a pair of microstrip dipoles excited by an E-shaped microstrip feedline is used to expand the bandwidth in the range of 5.96–7.04 GHz (S11 ≤ 10 dB). Then, the suggested Giuseppe Peano fractal AMC surface as a reflector of the antenna is inserted into the PDA to gain improved radiation efficiency. The PDA with the 6  6 Giuseppe Peano AMC array exhibits 10 dB measured impedance bandwidth of 4.95– 7.05 GHz (35%) 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 38%, enhanced gain up to 8.2 dBi, and excellent impedance matching (at least 20 dB) with directional radiation patterns. The novel AMC unit cell is realized based on the Giuseppe Peano fractal patch to operate at 6.10 GHz with an AMC bandwidth of 5.15–7.10 GHz (32%). Besides, by loading 12  12 AMC reflector into the four-element array of PDA, low profile wideband structure with enhanced radiation properties are achieved. The measured results show the broad bandwidths of 5–7 GHz for all elements with enhanced gains and good isolations between the elements (more than 24 dB) for multiple-input multiple-output (MIMO) systems.