Design of compact and broadband Wilkinson baluns using metamaterial phase shifting transmission lines

A miniaturized and self-packaged Gysel power divider with embedded metamaterials in SISL platform

“…In the field of radiofrequency equipment design, metamaterials have been extensively explored to achieve miniaturization [8,9,10,11] and enhance performance indicators such as gain, antenna directivity [12], bandwidth [13,14,15] and other good properties in radio frequency devices [16,17,18,19]. And various structures such as dual band branch line couplers, compact ring hybrids, zeroth order antennas, and broadband baluns have been intro-duced by incorporating metamaterial transmis-sion lines [20,21,22,23,24].…”