A terahertz ring hybrid coupler based on parallel plate dielectric waveguide with signal line for a ballistic deflection transistor travelling wave amplifier

In this paper, a new design of Terahertz (THz) Ring Hybrid Coupler Based on Parallel Plate Dielectric Waveguide with Signal Line inserted (PPDWS) is proposed. The PPDWS is a simple transmission line, easy to fabricate, with a low average loss of 0.45dB/mm at 1-1.4THz, and designed to be implemented...

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Bibliographic Details
Published in2017 International Conference on Electron Devices and Solid-State Circuits (EDSSC) pp. 1 - 4
Main Authors Huan Wang, Knepper, Ronald W., Millithaler, Jean-Francois, Marthi, Poorna, Margala, Martin
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2017
Subjects
BDT
Couplers
Dielectrics
Metals
PPDWS
Propagation losses
Ring Hybrid Coupler
Strips
Structural rings
Terahertz
Transistors
transmission line
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Summary:In this paper, a new design of Terahertz (THz) Ring Hybrid Coupler Based on Parallel Plate Dielectric Waveguide with Signal Line inserted (PPDWS) is proposed. The PPDWS is a simple transmission line, easy to fabricate, with a low average loss of 0.45dB/mm at 1-1.4THz, and designed to be implemented into the THz Ring Hybrid Coupler Design. We employ (3N+1.5)λ for the circumference of the Ring Hybrid Coupler for a fundamental mode of TE10. ANSYS HFSS simulations show S21=S41=-4.5dB, S31<; -20dB, S11<;-20dB at 1.022THz. We obtain an excellent isolation between split ports for signal transmission, and a very good signal cancellation on port3. The coupler and PPDWS line are planned for use in the Terahertz Ballistic Deflection Transistor Travelling Wave Amplifier; however, the design is also capable of being applied to other very high frequency applications.
DOI:10.1109/EDSSC.2017.8126569