Micromachined waveguide antennas for 1.6 THz

Bowen, J. W., Hadjiloucas, S. ORCID: https://orcid.org/0000-0003-2380-6114, Towlson, B. M., Karatzas, L. S., Wootton, S. T. G., Cronin, N. J., Davies, S. R., McIntosh, C. E., Chamberlain, J. M., Miles, R. E. and Pollard, R. D. (2006) Micromachined waveguide antennas for 1.6 THz. Electronics Letters, 42 (15). pp. 842-843. ISSN 0013-5194 doi: 10.1049/el:20061766

Abstract/Summary

A new type of horn antenna for operation at 1.6 THz, that can be fabricated monolithically with 1/4-height micromachined waveguide, is described. Height, limitations imposed by the micromachining process are overcome by removing a tapered slot in the upper surface of a scalar horn, allowing the E-plane fields to extend outside the confines of the metallic structure before radiation, with a consequent reduction in E-plane beamwidth. 1.6 THz radiation pattern measurements for different designs show that, while there is scope for further optimisation, 3 dB beamwidths of 24 degrees and 17.5 degrees in the E- and H-planes, respectively, can be achieved.