IEEE Access (Jan 2020)

Terahertz Power Divider Using Symmetric CPS Transmission Line on a Thin Membrane

  • Walid Gomaa,
  • Robert Levi Smith,
  • Hadi Esmaeilsabzali,
  • Thomas E. Darcie

DOI
https://doi.org/10.1109/ACCESS.2020.3040986
Journal volume & issue
Vol. 8
pp. 214425 – 214433

Abstract

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Recently, research has focused on developing efficient wave-guided THz system-on-chip (TSoC) components to reduce physical bulk, loss and cost of free-space THz systems. We recently demonstrated a TSoC platform using a coplanar-stripline (CPS) transmission-line on a 1 μm-thin membrane to generate and detect THz-bandwidth pulses with low loss and low dispersion up to 1.5 THz. In this paper, we demonstrate experimentally an in-phase THz power divider (TPD) at frequency 0.65 THz using the CPS transmission line defined by photolithography on a thin membrane. Measured pulses show close agreement with simulation results. The spectral power density of the measured THz-bandwidth pulses at the output ports are identical at the frequency of 0.65 THz with less than 1 dB power imbalance over a wide spectrum up to 1 THz.

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