Optimisation of THz transmission along waveguides fluently used in microwave by qualitative assessment of modal dispersion and losses
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Tools: Modeling with indigenous code MAXTRA 3D and commercial softwares (Ansoft HFSS and CST studio)
Dispersion of CPW:
Total losses (Radiation, dielectric, conduction):
Assessment on the total losses:
• Increase of losses versus frequency
• 60 % of conductor contribution in total losses
• Radiation losses are the most substantial in broaden waveguides
• W slot inversely acts on conductor and radiation losses
Comparison of radiation losses of air-bridged CPW (coplanar waveguide) on InP (like environment of PCS) and BCB with analytic calculation
- Realization of passive devices at the Minerve CTU of IEF
Metal evaporation, ICP etching, RIE, IBE, Metal deposits, polymers (cycloten Dow Chemical) deposits, SEM, Optical lithography and electron.
- Characterization of BCB by measurement of transmittance with FTIR (far IR to THz)
BCB permittivity characterization
Work in progress :
Comparison with another waveguides on BCB like Coplanar waveguide (CPW), microstrip, Goubau line, slotline, stripline.