Modelling and Impact of 3D Print Inaccuracies on the Performance of Circular Waveguide Hybrid Coupler


  • Amrita Bal Department of Electrical and Computer Engineering, Texas A&M University, College station, TX-77843, USA
  • Gregory H. Huff Department of Electrical Engineering, The Pennsylvania State University, State College, PA-16801, USA


3D printing, circular waveguide hybrid coupler and electroless silver deposition


Circular waveguide hybrid coupler operating over a frequency range of ISM 57-64 GHz, additively printed and metal plated using electroless technique is introduced. Effects of orientation of print and thickness of intricate structures on the performance of circular waveguide hybrid coupler are presented. The structure is printed using commercially available stereolithographic (SLA) printer. Circulatory system operated by a peristaltic pump is used for selective silver deposition of the hybrid coupler.


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J. Shen and D. S. Ricketts, “Additive manufacturing of complex millimeter-wave waveguides structures using digital light processing,” IEEE Transactions on Microwave Theory and Techniques, 2019.

K. Lomakin, L. Klein, L. Ringel, M. Sippel, K. Helmreich, and G. Gold “3D printed E-band hybrid coupler,” IEEE Microwave and Wireless Components Letters, 2019.

A. Bal, D. G. Carey, F. A. Espinal, and G. H. Huff, “Electroless silver plating of 3D printed waveguide components by peristaltic pump driven system,” Electronics Letters, vol. 55, no. 2, pp. 100-102, 2018.




How to Cite

Amrita Bal, & Gregory H. Huff. (2020). Modelling and Impact of 3D Print Inaccuracies on the Performance of Circular Waveguide Hybrid Coupler. The Applied Computational Electromagnetics Society Journal (ACES), 35(11), 1284–1285. Retrieved from