In this letter, a wideband substrate integrated waveguide (SIW) based slot antenna is designed for D -band applications. A wideband response is attributed to the merging of closely lying six resonance frequencies. Two of them at frequencies of 114.25 GHz and 134.75 GHz signifies the excitation of TE <tex-math notation="LaTeX">₃₁₀</tex-math> and TE <tex-math notation="LaTeX">₁₂₀</tex-math> modes, respectively. The modes at 124 GHz and 144 GHz are identified as hybrid modes that are formed from the combination of TE <tex-math notation="LaTeX">₃₁₀</tex-math> –TE <tex-math notation="LaTeX">₁₂₀</tex-math> and TE <tex-math notation="LaTeX">₁₂₀</tex-math> –TE <tex-math notation="LaTeX">₂₂₀</tex-math> modes, respectively. The upper two resonances at the frequencies of 154 GHz and 160 GHz occur due to TE <tex-math notation="LaTeX">₂₂₀</tex-math> –TE <tex-math notation="LaTeX">₃₂₀</tex-math> based hybrid modes. A two-step wideband WR6-SIW transition is also designed and integrated with the antenna for measurement purpose. In the first step, the three-section Chebyshev transition is developed to match the impedance of standard WR6 with a rectangular waveguide (RWG) of the same height as that of the PCB. In the second step, the RWG is matched with SIW using a dielectric extension. The final antenna with transition is simulated and measured. A wide <tex-math notation="LaTeX">$-$</tex-math> 10 dB impedance bandwidth for <tex-math notation="LaTeX">|S₁₁| ≤ -</tex-math> 10 dB of 42.86% (110–170 GHz) is obtained. The gain and radiation measurements were also performed after constructing an in-house measurement system.
No takes yet. Share an insight, caveat, or question.
Altaf et al. (2021) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: