BST-varactor tunable dual-mode filter using variable ZC transmission line

被引：34

作者：

Chun, Young-Hoon ^{[1
]}

Hong, Jia-Sheng ^{[1
]}

Bao, Peng ^{[2
]}

Jackson, Timothy J. ^{[2
]}

Lancaster, Michael J. ^{[2
]}

机构：

[1] Heriot Watt Univ, Dept Elect Engn & Comp Engn, Edinburgh EH14 4AS, Midlothian, Scotland

[2] Univ Birmingham, Dept Elect Engn & Comp Engn, Birmingham B15 2TT, W Midlands, England

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2008年 / 18卷 / 03期

基金：

英国工程与自然科学研究理事会;

关键词：

Barium-Strontium-Titanate (BST); dual mode filter; ferroelectric material; tunable circuit; tunable filter; varactor;

D O I：

10.1109/LMWC.2008.916778

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：

Ferroclectric materials like Barium-Strontium-Titanate (BST) have become attractive for microwave tunable circuit applications. This letter presents an investigation of BST-varactor tunable dual-mode filter using variable characteristic impedance or Z(C) transmission line. The interdigital BST varactors are fabricated and modeled, which are then deployed to realize a bandpass filter with tunable bandwidth capability. The use of tunable impedance line provides additional flexibilities in the design of microwave tunable circuits. A tunable bandpass filter of this type with a center frequency of 1.8 GHz and a bandwidth tuning ratio of 1.15:1 is demonstrated experimentally.

引用

页码：167 / 169

页数：3

共 13 条

[1]

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[2] Design of dual-mode ring resonators with transmission zeros [J].