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Gain and isolation improvement of compact MIMO printed dipole arrays realized by second iteration Giuseppe Peano AMC for 4G/5G wireless networks

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Abstract

A low-profile 16-element printed dipole antenna (PDA) array supported by broadband Giuseppe Peano artificial magnetic conductor (AMC) is introduced for wireless communication systems. Firstly, a suggested PDA with a pair of the microstrip dipoles excited by an T-shaped microstrip feedline is used to expand the bandwidth in the measured range of 5.35–6.7 GHz (S11 ≤  − 10 dB). Then, the suggested second iteration Giuseppe Peano AMC reflector is inserted into the PDA to gain improved radiation efficiency. The realized result for the PDA with the 3 × 3 Giuseppe Peano AMC array with second iteration exhibits − 10 dB measured bandwidth from 4.50 to 7.20 GHz (more than 46%) for WLAN/ WiMAX and 5G applications. The suggested PDA with AMC compared to the PDA without AMC exhibits a size reduction of 35%, enhanced gain up to 8 dBi, and excellent impedance matching (at least − 18 dB) with uni-directional radiation patterns. By loading a 12 × 12 AMC reflector into the sixteen-element array of PDA, a low profile wideband structure with enhanced radiation properties is achieved. The measured S-parameters show the broad bandwidth from 4.46 to 7.02 GHz in C-band with enhanced gains of all elements and the suitable isolation of more than 28.5 dB for multiple-input multiple-output (MIMO) systems. Besides, the novel AMC unit cell is realized based on the recognized method as second iteration Giuseppe Peano fractal patch to operate at 6.10 GHz with an AMC bandwidth of 5.15–7.10 GHz (32%).

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Authors and Affiliations

  1. Department of Electrical Engineering, Faculty of Engineering, Arak University, 38156-8-8349, Arak, Iran

    Hossein Malekpoor & Ali Abolmasoumi

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  1. Hossein Malekpoor
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  2. Ali Abolmasoumi
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Correspondence to Hossein Malekpoor.

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Malekpoor, H., Abolmasoumi, A. Gain and isolation improvement of compact MIMO printed dipole arrays realized by second iteration Giuseppe Peano AMC for 4G/5G wireless networks. Wireless Netw 28, 1949–1962 (2022). https://doi.org/10.1007/s11276-022-02950-w

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