Micromachined waveguide antennas for 1.6 THz
Bowen, J. W., Hadjiloucas, S., 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
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To link to this article DOI: 10.1049/el:20061766
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.