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Sub-Millimeter-Wave Imaging Array at 500 GHz Based on 3-D Electromagnetic-Bandgap Material

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9 Author(s)
Ederra, I. ; Electr. & Electron. Eng. Dept., Univ. Publica de Navarra, Pamplona ; Gonzalo, R. ; Alderman, B. ; Huggard, P.G.
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The design, fabrication, and characterization of a 500-GHz electromagnetic bandgap (EBG) based heterodyne receiver array is presented. The array contained seven planar dipole antennas that were photolithographically defined on a common 20-mum-thick quartz substrate. Each antenna incorporated a Schottky diode and was connected to coplanar transmission lines that conveyed the down-converted 500-GHz signals to detectors. The quartz substrate was backed by a silicon EBG woodpile structure, which reduced antenna crosstalk and increased directivity. An off-axis parabolic mirror completed the beam-forming network.

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:56 ,  Issue: 11 )