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This paper presents a slotted circular waveguide as an open-circuited standard structure. This device as well as its previous stages are simulated with a 3D FDTD program. The dimensions are based on estimations of the MM8048B1® open-circuited standard. The results obtained through a variational method and a static MoM simulation, when compared with those obtained by means of 3D FDTD simulation, are found to be in good agreement, especially in the L-band.

Proposal of a slotted circular waveguide as an open-circuited standard for calibration of L-band network analyzers