Composite right/left handed transmission line phase shifter using ferroelectric varactors

被引：81

作者：

Kuylenstierna, D ^{[1
]}

Vorobiev, A

Linnér, P

Gevorgian, S

机构：

[1] Chalmers Univ Technol, Dept Microtechnol & Nanosci MC2, Microwave Elect Lab, SE-41296 Gothenburg, Sweden

[2] Ericsson AB, MHSERC, SE-43184 Molndal, Sweden

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2006年 / 16卷 / 04期

关键词：

composite right/left-handed (CRLH); ferroelectric; phase shifter; tunable;

D O I：

10.1109/LMWC.2006.872145

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A composite right/left handed (CRLH) transmission line (TL) phase shifter, using ferroelectric (Ba0.25Sr0.75TiO3) varactors as tunable element, is presented for the first time. It is theoretically and experimentally demonstrated how the unique features of CRLH TLs, enables a differential phase shift with flat frequency dependence around the center frequency. The experimental prototype is a coplanar design integrated on a high resistive Si substrate. It includes four CRLH T-unit cells and has a physical length of 3850 mu m. The ferroelectric varactors are realized in parallel plate version. Under 15-V dc bias applied over each varactor, the differential phase shift is flat around 17 GHz and has an absolute value of 50 degrees.

引用

页码：167 / 169

页数：3

共 10 条

[1] A new high performance phase shifter using BaxSr1-xTiO3 thin films [J].