Title :
Broadband digital phase shifter based on switchable right- and left-handed transmission line sections
Author :
Kholodnyak, Dmitry ; Serebryakova, Elena ; Vendik, Irina ; Vendik, Orest
Author_Institution :
Dept. of Microelectron. & Radio Eng., St. Petersburg Electrotechnical Univ., Russia
fDate :
5/1/2006 12:00:00 AM
Abstract :
A novel approach to design digital phase shifters with the operational bandwidth extended to one octave is presented. An original design of the broadband phase shifter based on switching between transmission lines (TLs) with positive and negative dispersions is considered. An artificial TL with the negative dispersion was implemented as a quasilumped-element coplanar structure using a multilayer technology. The simulated and measured performance of the 180° phase shifter is presented.
Keywords :
digital circuits; microwave phase shifters; multilayers; transmission lines; broadband digital phase shifter; left-handed transmission line sections; multilayer technology; negative dispersion; positive dispersion; quasilumped-element coplanar structure; switchable right-handed transmission line sections; Bandwidth; Circuits; Coplanar transmission lines; Filters; Frequency; Impedance; Nonhomogeneous media; Phase shifters; Transmission line theory; Transmission lines; Multilayer; phase shifter; positive and negative dispersion; quasilumped elements; right/left-handed (RH/LH) transmission lines (TLs);
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2006.873593
