Compact linear lead/lag metamaterial phase shifters for broadband applications

By M. A. Antoniades, George V. Eleftheriades. IEEE Antennas and Wireless Propagation Letters, 2003

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A broadband series power divider using zero-degree metamaterial phase-shifting lines (2005, methodology): “The design of the MM phase-shifting lines was based on the MM unit cell proposed in [7], which can be used to synthesize phase-shifting lines that can incur an arbitrary insertion phase by adjusting the values of the loading elements and .”
A broadband Wilkinson balun using microstrip metamaterial lines (2005, methodology): “design of the and phase-shifting lines was based on the MM unit cell proposed in [8] and shown in Fig.”
A compact and low-profile metamaterial ring antenna with vertical polarization (2005, methodology): “The design of the individual 0 unit cells comprising the MM antenna was carried out using (2) together with the following expression for the phase shift per unit cell[6]:”
A Folded-Monopole Model for Electrically Small NRI-TL Metamaterial Antennas (2008, background): “The unit cell differs from the analogous unit cell of [4] by a simple shift of the reference planes defining the unit cell within the larger periodic structure.”
Proposal and Synthesis Design of Differential Phase Shifters With Filtering Function (2017, methodology): “Recently, the metamaterial phaseadjusting line was studied [10] by periodically loading a few lumped series capacitors and shunt inductors so as to realize the wideband 90° and 180° phase shifters in [11] and [12].”