Macháč J., Hudlička M., Zehentner J., Spiliotis N. G., Omar A. S: Left-Handed Coplanar Waveguide, 2005 IEEE MTT-S International Microwave Symposium Digest, Long Beach, Ca., USA, June 2005, TH4F-5.
This paper proposes a new version of a left-handed coplanar waveguide. The line has a fully uniplanar structure without vias and lumped elements. The series capacitors are represented by interdigital capacitors and the parallel inductors by short circuited CPW stubs connected to a ground metallization. The measured frequency dependences of S21 and S11 agree well with the data predicted by simulation. The simple equivalent circuit of the line unit cell was set up by fitting its dispersion characteristic to the dispersion characteristic of the first left-handed mode calculated by the CST Microwave Studio.
