Fig. 2: The performance of the lumped elements for wideband impedance matching.
From: Negative capacitors and inductors enabling wideband waveguide metatronics
a Inductive metallic post in waveguide. b, c Electromagnetic impedance matching for metallic post with positive and negative elements, respectively. d–f Performance of the metallic post in waveguide and electromagnetic impedance matching by different elements. g–i Numerical field distributions at different frequencies of the metallic post in waveguide and impedance matching by different elements.
