DocumentCode :
3163243
Title :
X-band Left Handed Phase Shifter using Thin Film Ba0.25SR0.75TiO3 Ferroelectric Varactors
Author :
Kuylenstierna, Dan ; Ash, Eric ; Vorobiev, Andrei ; Itoh, Tatsuo ; Gevorgian, Spartak
Author_Institution :
Dept. of Microtechnology & Nanoscience, Chalmers Univ. of Technol., Goteborg
fYear :
2006
fDate :
10-15 Sept. 2006
Firstpage :
847
Lastpage :
850
Abstract :
This paper describes the design, modeling, and realization of a tunable left handed (LH) phase shifter using thin film Ba0.25Sr0.75TiO3 (BST) ferroelectric varactors. The unique nature of LH transmission line (TL) metamaterials enables reduced size, compared to conventional loaded line phase shifters realized as right handed (RH) TLs. The prototype LH TL phase shifter fabricated in this work includes 9 LH unit cells. At 10 GHz the phase advance is ~1000 deg without applied bias and under applied 20 V DC bias it tunes to ~750 deg. The Figure of Merit is better than 30 deg/dB over a 22 % bandwidth extending from 8.7 GHz to 10.9 GHz
Keywords :
ferroelectric devices; metamaterials; varactors; 10 GHz; 20 V; 8.7 to 10.9 GHz; BST thin film; Ba0.25Sr0.75TiO3; X-band left handed phase shifter; ferroelectric varactors; figure of merit; left handed transmission line; metamaterials; right handed transmission line; Bandwidth; Binary search trees; Ferroelectric materials; Metamaterials; Phase shifters; Prototypes; Strontium; Transistors; Transmission lines; Varactors;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Microwave Conference, 2006. 36th European
Conference_Location :
Manchester
Print_ISBN :
2-9600551-6-0
Type :
conf
DOI :
10.1109/EUMC.2006.281052
Filename :
4057951
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=3163243
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