Compact linear lead/lag metamaterial phase shifters for broadband applications

@article{citeulike:1809534, abstract = {A compact one-dimensional phase shifter is proposed using alternating sections of negative refractive index (NRI) metamaterials and printed transmission lines (TL). The NRI metamaterial sections consist of lumped element capacitors and inductors, arranged in a dual TL (high-pass) configuration. By adjusting the NRI-medium lumped element values, the phase shift can be tailored to a given specification. Periodic analysis is applied to the structure and design equations are presented for the determination of the lumped element parameters for any arbitrary phase shift. To validate the design, various phase shifters are simulated and tested in coplanar waveguide (CPW) technology. It is demonstrated that small variations in the NRI-medium lumped element values can produce positive, negative or 0/spl deg/ phase shifts while maintaining the same short overall length. Thus, the new phase shifter offers some significant advantages over conventional delay lines: it is more compact in size, it exhibits a linear phase response around the design frequency, it can incur a phase lead or lag which is independent of the length of the structure and it exhibits shorter group delays.}, author = {Antoniades, M. A. and Eleftheriades, G. V. }, booktitle = {Antennas and Wireless Propagation Letters}, citeulike-article-id = {1809534}, journal = {Antennas and Wireless Propagation Letters}, keywords = {broadband, coplanar, metamaterial, phase-shifter}, pages = {103--106}, posted-at = {2007-10-23 08:57:14}, priority = {2}, title = {Compact linear lead/lag metamaterial phase shifters for broadband applications}, url = {http://ieeexplore.ieee.org/xpls/abs\_all.jsp?arnumber=1214903}, volume = {2}, year = {2003} }

TY - JOUR ID - citeulike:1809534 L3 - citeulike-article-id:1809534 TI - Compact linear lead/lag metamaterial phase shifters for broadband applications T2 - Antennas and Wireless Propagation Letters JF - Antennas and Wireless Propagation Letters VL - 2 SP - 103 EP - 106 N2 - A compact one-dimensional phase shifter is proposed using alternating sections of negative refractive index (NRI) metamaterials and printed transmission lines (TL). The NRI metamaterial sections consist of lumped element capacitors and inductors, arranged in a dual TL (high-pass) configuration. By adjusting the NRI-medium lumped element values, the phase shift can be tailored to a given specification. Periodic analysis is applied to the structure and design equations are presented for the determination of the lumped element parameters for any arbitrary phase shift. To validate the design, various phase shifters are simulated and tested in coplanar waveguide (CPW) technology. It is demonstrated that small variations in the NRI-medium lumped element values can produce positive, negative or 0/spl deg/ phase shifts while maintaining the same short overall length. Thus, the new phase shifter offers some significant advantages over conventional delay lines: it is more compact in size, it exhibits a linear phase response around the design frequency, it can incur a phase lead or lag which is independent of the length of the structure and it exhibits shorter group delays. KW - broadband KW - coplanar KW - metamaterial KW - phase-shifter AU - Antoniades, MA AU - Eleftheriades, GV PY - 2003/// UR - http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1214903 ER -