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Numerical analysis of the near-field power transfer using multi-antennas is performed based on the scattering parameters for an equivalent circuit model of multi-port networks. The transfer power efficiency is derived by using the multi-port scattering parameters. Since the multi-port scattering parameters are easily measured by a vector network analyzer and calculated by a full-wave numerical analysis,...
Reflectarray is used as a passive reflector for improving outdoor radio channel in none-line-of-sight (NLOS) environment. The proposed reflectarray is designed with a 58-degree scattering angle and installed on the roof of a high building to eliminate blind spots and enhance MIMO performance. The performance and effectiveness in improvement of the receiving signal noise ratio (SNR) and channel quality...
A new frequency selective reflectarray (FSR) comprising a crossed-dipole array and a frequency selective surface (FSS) of square loops printed on both sides of a dielectric substrate is presented for wireless communication applications. The reflectarray functions as a reflector, and generates the desired reflected beam shape while steering the primary wave source in the desired direction. Moreover,...
In this research, an experimental study has been carried out to measure the MIMO performance in LOS and NLOS indoor environment by using a 2 times 2 MIMO system where the MSAA is used as the receiving antenna with different array spacing. The EVM was measured to demonstrate the performance of the MSAA in the MIMO communication systems. It is found that larger array spacing can improve the EVM, and...
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