Dielectric Microstrip Line with Low Loss for Terahertz Transmission

New designs in the Dielectric Microstrip Line (DML) and coplanar waveguide are used to form better connection between the planar passive and active circuits, while providing low insertion loss in THz operation. A DML consists of three layers of printed circuit board (PCB) were attached using polymethyl methacrylate (PMMA) adhesive films with controlled thickness as low cost. This DML is a metal free transmission line eliminating metal loss, which can be a very serious problem at THz. The mode is the main mode in the DML for the EM wave propagation.

                      

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(a) S-Parameter of two different length DMLs. (b) Simulation and measured results of attenuation constant for DML.

Conference Presentations

1. Quan Xue, Hao Tian Zhu, Leung Chiu, Qing-Yuan Tang, Xinghai Zhao, and Stella W. Pang, “Dielectric Microstrip Line (DML) - A New Transmission Line for Terahertz Applications”, 2014 URSI General Assembly and Scientific Symposium, Beijing, China, August 2014.
2. Quan Xue, Hao Tian Zhu, and Leung Chiu, “Three-Layer Dielectric Waveguide with Microstrip Transition”, 2013 IEEE International Workshop on Electromagnetics, Hong Kong, August 2013.
3. Hao-Tian Zhu, Leung Chiu, Quan Xue, Qing-Yuan Tang, and Stella W. Pang, “Design of a Broadband CPWG to Dielectric Ridge Waveguide Transition for Terahertz Circuits”, 2013 IEEE International Workshop on Electromagnetics, Hong Kong, August 2013.
4. Q. Xue, C. L. Chiu, and H. T. Zhu, “A Transition of Microstrip Line to Dielectric Microstrip Line for Millimeter Wave Circuits”, 2013 International Wireless Symposium, Beijing, April 2013.