Planar spiral resonators for compact antenna applications

Planar spiral resonators on the conductor backed substrates are examined in the view of metamaterial, compact antenna and System-in-Package applications. A single layer spiral and stacked tightly coupled spiral resonator pairs on the conductor backed substrates have been investigated. It is shown that rotation of the spirals with respect to each other in a pair results in decrease of the resonance frequencies. This feature provides a means for tuning of metamaterial and antenna magnetic response.