Numerical Study of a Coplanar Zeroth-order Resonator on YIG Thin Film

The objective of this work is to study numerically the behaviour of a coplanar composite right-left handed zeroth order resonator (CRLH ZOR) realized on a YIG (Yttrium Iron Garnet) thin film. We are focusing on the effects on the resonant frequency when changing the magnetic bias and the thickness of the YIG. This study presents for the first time a tunable CRLH ZOR with a coplanar structure on YIG thin film. The length of the proposed design (device) is 5.2 mm, which is very small compared to a traditional half wave resonator. The proposed resonator is designed to be tuned over the 5-6 GHz frequency band; insertion loss is lower than 1 dB and return loss is better than 10 dB.