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This paper demonstrates experimentally the interest of using metamaterials to lower the LUF of reverberation chambers. A novel low-cost and easy to fabricate metamaterial unit cell is designed and implemented on the walls of a reverberation chamber. This metamaterial RC is then characterized experimentally. Measured results show that the LUF can be decreased from at least 500 MHz to 153 MHz. It is...
Evaluating the $Q$ factor of antennas using metamaterial substrates is a challenge and requires new analysis techniques. This challenge is even more important for arbitrary-shaped antennas. In this paper, we address the problem of analysis and evaluation of metamaterial-based antennas through the use of characteristic modes. We propose a new expression for the total $Q$ factor, which is independent...
In this paper, we address the problem of the analysis and evaluating metamaterial-based antennas through the use of characteristic modes. We propose a new expression for the total Q factor, independently from the excitation and based on the eigenvalues of the structure. The proposed expression is utilized to compute the Q factor of an arbitrary shaped antenna and metamaterial-based antenna and shown...
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