Miniature microwave devices based on a combination of natural right-handed and metamaterial left-handed transmission linesI. Vendik, D. Kholodnyak, E. Serebryakova and P. KapitanovaEur. Phys. J. Appl. Phys., 46 3 (2009) 32610DOI: https://doi.org/10.1051/epjap/2008195