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Polymer Membranes to Quarter-Wave Match Gaussian Optics

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4 Author(s)
Jack T. Surek ; National Institute of Standards and Technology, Boulder, CO, USA ; Jason Coder ; Joshua Gordon ; David R. Novotny

We demonstrate two simple quarter-wave matches designed in the WR10 band that reduce peak reflected power by 20 and 25 dB near the match frequencies by use of membrane layers on high-density polyethylene (HDPE)-air interfaces. Polytetrafluoroethylene (PTFE)-based membranes that are expanded by regular air voids are layered upon a solid HDPE slab by use of spray adhesive. S-parameter measurements with and without these layers demonstrate the improved power match with two to three membrane layers applied.

Published in:

IEEE Transactions on Terahertz Science and Technology  (Volume:3 ,  Issue: 2 )