Design of Frequency-Reconfigurable Antenna on Dielectric and Magnetic Metamaterial Composite Substrate

Reconfigurable planar antennas are essential in multifunctional wireless communication devices. This letter presents the design of a frequency-reconfigurable patch antenna printed on a composite substrate made of a dielectric and a magnetic metamaterial (MMM). The MMM comprises magnetized ferrite slabs with embedded split-ring resonators (SRR). The constructive coupling between the resonances of the magnetized ferrites and SRR is optimized to achieve promising reconfigurable properties. The proposed frequency-reconfigurable antenna demonstrates a 158% increase in the frequency tuning range. Furthermore, the simulated results are experimentally verified, and the composite substrate shows slight effects on the antenna radiation characteristics.

Automated summary

This letter presents the design and experimental verification of a frequency-reconfigurable patch antenna printed on a composite substrate made of a dielectric and a magnetic metamaterial. The proposed antenna achieves a 158% increase in the frequency tuning range by optimizing the constructive coupling between magnetized ferrite slabs and split-ring resonators. The composite substrate has negligible effects on the antenna radiation characteristics.