Title :
Tunable negative refractive index metamaterial phase shifter
Author :
He, P. ; Parimi, P.V. ; He, Y. ; Harris, V.G. ; Vittoria, C.
Author_Institution :
Northeastern Univ., Boston
Abstract :
A tunable compact phase shifter utilising negative refractive index metamaterial is demonstrated. The negative index metamaterial is composed of a periodic copper wire pattern sandwiched between two slabs of high quality yttrium iron garnet films. Near ferrimagnetic resonance, a phase shift tuning of 160deg/kOe is achieved at 24 GHz. The insertion loss varies from 4 to 7 dB for a 1 cm-long composite.
Keywords :
circuit tuning; copper; ferrite devices; ferromagnetic resonance; garnets; iron alloys; metamaterials; microwave phase shifters; yttrium alloys; ferrimagnetic resonance; frequency 24 GHz; loss 4 dB to 7 dB; negative refractive index metamaterial phase shifter; periodic copper wire; phase shift tuning; size 1 cm; tunable compact phase shifter;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20072451
