Piezo-controlled microwave frequency agile dielectric devices

被引:0
|
作者
Furman, E [1 ]
Lanagan, M [1 ]
Golubeva, I [1 ]
Poplavko, Y [1 ]
机构
[1] Penn State Univ, University Pk, PA 16802 USA
来源
PROCEEDINGS OF THE 2004 IEEE INTERNATIONAL FREQUENCY CONTROL SYMPOSIUM AND EXPOSITION | 2005年
关键词
tunable; piezoelectric; microwave; resonator;
D O I
暂无
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 novel approach utilizing piezoelectric actuators to control filters, resonators, and phase shifters with the minimum insertion loss is described. Tunable, low-loss microwave devices can be fabricated using composite structures in which effective dielectric constant, epsilon(ef), is controlled by piezoelectrically induced changes in the energy distribution within the devices. With this approach high degree of tunability is possible while utilizing high Q dielectrics. These devices usually consist of two dielectric parts with an air gap between them. This gap has to be arranged to provide the largest perturbation in the electromagnetic field. By means of a fast piezoelectric mini-actuator, the size of the air gap is changed and as a result, the epsilon(ef) can be tuned. This tuning is used for a device control. Highly tunable (more than 20%) dielectric and metal ring resonators, as well as wide-band, low-loss phase shifters are realized experimentally.
引用
收藏
页码:266 / 271
页数:6
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