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Title: On the surface roughness and smoothing in the 3D printed THz reflectors
This paper presents the effect of surface roughness on the performance of the 3D printed near field focused THz Cassegrain antenna configuration. It is found that the roughness affects the focal plane parameters. The nearfield directivity is reduced by ~ 3.5 dB for 60 µm rough surface, there is only a small effect on the focus spot width. A smoothing process, which reduces the conductive coating surface roughness to 4 µm, is also described. The roughness loss is less than 0.1 dB at 300GHz.  more » « less
Award ID(s):
1740962
NSF-PAR ID:
10112667
Author(s) / Creator(s):
Date Published:
Journal Name:
Digest - IEEE Antennas and Propagation Society. International Symposium
ISSN:
1522-3965
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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