Leaky-wave antenna designed in SIW technique with SRR slots

In this paper the design of a leaky-wave antenna realized in SIW technique has been presented. The developed antenna is composed of unit cells in which pairs of slots in a shape of split ring resonators (SRR) have been introduced. It is shown that the application of such slots in upper metallization layer allows for achieving similar bandwidths of right and left handed regions of the designed CRLH unit cell. Moreover, leaky-wave antenna developed with the proposed unit cell features high beam-scanning range to bandwidth ratio.