Technical and research articles

Articles

Technical and research articles, with author names, publication dates and references.

2021-03-03

High-gain, high-isolation, and wideband millimetre-wave closely spaced multiple-input multiple-output antenna with metamaterial wall and metamaterial superstrate for 5G applications

IET Microwaves, Antennas & Propagation

The authors combine a metamaterial wall and superstrate around a compact MIMO antenna for the 28–32 GHz band. Simulations report peak gain of 17.1 dB and isolation of 36.7 dB at 30 GHz, supporting simultaneous improvement of gain and isolation for 5G antenna designs.

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2021-12-23

A Simple Method to Enhance Gain and Isolation of MIMO Antennas Simultaneously Based on Metamaterial Structures for Millimeter-Wave Applications

Journal of Infrared, Millimeter, and Terahertz Waves

A compact 30 GHz MIMO antenna uses sigma-shaped metamaterial cells to improve gain and reduce coupling between closely spaced elements. The paper reports gain improvement above 8 dB and isolation improvement above 32 dB, with radiation efficiency of 68% at 30 GHz.

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A Novel High-Isolation Resistor-Less Millimeter-Wave Power Divider Based on Metamaterial Structures for 5G Applications

IEEE Transactions on Components, Packaging and Manufacturing Technology

The study uses metamaterial layers to isolate the output ports of a compact power divider for 28–32 GHz 5G systems. The prototype needs no isolation resistor and achieves measured isolation of 43 dB at 30 GHz, improving isolation by more than 36 dB against the reference design.

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