Multifrequency single patch antennas loaded with Split Ring Resonators

Multifrequency antennas with low frequency ratio between frequencies would be desirable for systems that work on different frequency bands which are very close. In this paper multifrequency single patch antennas loaded with Split Ring Resonators (SRRs) are presented. Two or more working frequencies with ratios lower than 1.05 are achieved and two manufactured prototypes working on the X-Band are presented.