[Invited] Terahertz corrugated and bull's-eye antennas

Miguel Beruete (1) , Unai Beaskoetxea (1) , Mokhtar Zehar (2) , Amit Agrawal (3) , Shuchang Liu (4) , Karine Blary (2) , Abdallah Chahadih (2) , Xiang-Lei Han (2) , Miguel Navarro-Cia (5) , David Salinas (1) , Ajay Nahata (4) , Tahsin Akalin (2) , Mario Sorolla (1)

1 Universidad de Navarra - (Pamplona - Spain)
2 IEMN - Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520
3 Depratment of Electrical Engineering and Computer Science
4 University of Utah
5 DEEE - Department of Electrical and Electronic Engineering [London]

The radiation and temporal properties of one-dimensional and two-dimensional (Bull's-eye) corrugated antennas are investigated numerically and experimentally at terahertz. The thickness of the antenna is miniaturized, within the fabrication limits, by using the transverse slot resonance rather than the longitudinal resonance. Square and triangular corrugations are discussed. The comparison between these two profiles shows that, in terms of return loss and gain, the antenna is robust to the corrugation shape, which alleviates the fabrication complexity. The temporal analysis of the Bull's eye antenna is also shown to demonstrate the contributions coming from the leakage of the surface wave at each groove. This insight allows us to engineer the temporal shape of the output pulse by varying independently the depth of each groove. The antennas presented here hold promise for manipulating with very low profiles pulse- and beam-shapes of THz radiation.

Mots clés: Surface waves; Apertures; Corrugated surfaces; Antenna measurements; Metamaterials; Fabrication

Domaines: Sciences de l'ingénieur [physics]

Miguel Beruete, Unai Beaskoetxea, Mokhtar Zehar, Amit Agrawal, Shuchang Liu, et al.. [Invited] Terahertz corrugated and bull's-eye antennas. IEEE Transactions on Terahertz Science and Technology, 2013, 3 (6), pp.740-747. ⟨10.1109/TTHZ.2013.2287096⟩. ⟨hal-00908683⟩