Table 5 Simulated performance for the different coatings of the mode conversion.

From: Additively manufactured lightweight coaxial to circular waveguide transition for linearly polarized microwave systems

Material

S11 (dB)

S21 (dB)

\(\:{{P}}_{\text{reflected}}\) (W)

\(\:{{P}}_{\text{Transmitted}}\) (W)

Mode conversion efficiency (%)

\(\:{{P}}_{\text{input}}\times\:{\left|{{S}}_{11}\right|}_{\text{linear}}^{2}{*}\)

\(\:{{P}}_{\text{input}}\times\:{\left|{{S}}_{21}\right|}_{\text{linear}}^{2}{*}\)

\(\:{\left|{{S}}_{21}\right|}_{\text{linear}}^{2}\times\:100\)

Aluminum foil

− 32.73 dB

− 0.11 dB

0.000484

0.974

97.40

Copper

− 31.96 dB

− 0.47 dB

0.000625

0.892

89.20

Silver

− 27.45 dB

− 0.01 dB

0.001764

0.996

99.60

  1. Where Note: *\(\:{\left|{S}_{ij}\right|}_{\text{linear}}={10}^{\frac{{\left|{S}_{ij}\right|}_{\text{dB}}}{20}}\)
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