Optimized design of THz microstrip antenna based-on dual-surfaced multiple split-ring resonators

With the huge increasing need of wide-band wireless/mobile communication, the 5G or even further future generation systems based on millimeter-wave or even higher frequency band like terahertz (THz) waveband has been attracting more and more hot research on the related antenna design. In this paper, an optimized design of one kind of the THz microstrip antenna based on the dual-surfaced multiple split-ring resonators (DSMSRRs) is presented. Attached on both surfaces of the antenna substrate, each layer contains the same MSRRs connected with a feeding line correspondingly. The total two feeding lines are overlapped from the top view while the MSRRs structure on each surface is connected with each feeding line in an opposite direction from one to the other. The well performance of even current distribution on MSRRs of both surfaces can be achieved at the resonant frequency of around 300 GHz. Some numerical results are verified by the test ones of a fabricated antenna model according to the scaling effect.