Wide piezoelectric tuning of LTCC bandpass filters

被引：12

作者：

Al-Ahmad, M ^{[1
]}

Maenner, R ^{[1
]}

Matz, R ^{[1
]}

Russer, P ^{[1
]}

机构：

[1] Siemens AG, Corp Technol, D-81730 Munich, Germany

来源：

2005 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM, VOLS 1-4 | 2005年

关键词：

bonding; ceramics; piezoelectric materials; tunable filter; varactors;

D O I：

10.1109/MWSYM.2005.1516910

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：

The increasing number of frequency bands and services in wireless communications: is causing a demand for analogue active and passive frontend components with wide bandwidth or tuning range, respectively. Similar to micro-electromechanical systems (MEMS), this work presents a parallel plate capacitor with multilayer dielectrics and piezo-electrically movable top electrode as an advantageous tunable element with no addition of any lossy material. When applied as a shunt capacitor in a coupled microstrip-line LTCC bandpass filter, the center frequency of the filter is tuned from 1.1 GHz to 2.6 GHz with 200 V control voltage and low insertion loss of 2 to 4 dB. The analysis of the device by full-wave simulation reveals a potential tuning range from 0.8 GHz to 2.8 GHz when the thin-film processability of the LTCC surface is properly controlled.

引用

页码：1275 / 1278

页数：4

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