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1 year ago in Electrical Engineering , RF & Antenna Design By Shraddha
I’m simulating a Dielectric Resonator Antenna (DRA) using Barium Titanate (BaTiO‑) at 2.5 GHz. Which material properties, beyond permittivity, are critical to model accurately for realistic performance prediction?
My initial design uses the high permittivity (ε_r ~ 80-200) of BaTiO? to shrink the DRA size. But I know its properties are frequency-dependent and can vary with temperature and fabrication process. For a reliable simulation at 2.5 GHz, what specific material data should I be sourcing? Is the loss tangent (tan δ) the next most critical factor, or do I need to account for its non-linear behavior, temperature coefficient, and possible porosity if I'm using a sintered ceramic? How do these factors ultimately impact radiation efficiency and resonant frequency shift in a real prototype?
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By Mehvish Answered 3 months ago
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