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A Micromachined Terahertz Waveguide 90 ^{\circ} Twist

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7 Author(s)
Lihan Chen ; Charles L. Brown Department of Electrical and Computer Engineering, University of Virginia, Charlottesville, VA, USA ; Alex Arsenovic ; James R. Stanec ; Theodore J. Reck
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Waveguide twists are often necessary to provide polarization rotation between waveguide-based components. At terahertz frequencies, it is desirable to use a twist design that is compact in order to reduce loss; however, these designs are difficult if not impossible to realize using standard machining. This paper presents a micromachined compact waveguide twist for terahertz frequencies. The Rud-Kirilenko twist geometry is ideally suited to the micromachining processes developed at the University of Virginia. Measurements of a WR-1.5 micromachined twist exhibit a return loss near 20 dB and a median insertion loss of 0.5 dB from 600 to 750 GHz.

Published in:

IEEE Microwave and Wireless Components Letters  (Volume:21 ,  Issue: 5 )