Frequency-agile microwave components using ferroelectric materials

Jose G. Colom-Ustariz; Rafael Rodriguez-Solis; Salmir Velez; Snaider Rodriguez-Acosta

doi:10.1117/12.463043

8 April 2003 Frequency-agile microwave components using ferroelectric materials

Jose G. Colom-Ustariz, Rafael Rodriguez-Solis, Salmir Velez, Snaider Rodriguez-Acosta

Proceedings Volume 4881, Sensors, Systems, and Next-Generation Satellites VI; (2003) https://doi.org/10.1117/12.463043
Event: International Symposium on Remote Sensing, 2002, Crete, Greece

Abstract

The non-linear electric field dependence of ferroelectric thin films can be used to design frequency and phase agile components. Tunable components have traditionally been developed using mechanically tuned resonant structures, ferrite components, or semiconductor-based voltage controlled electronics, but they are limited by their frequency performance, high cost, hgih losses, and integration into larger systems. In contrast, the ferroelectric-based tunable microwave component can easily be integrated into conventional microstrip circuits and attributes such as small size, light weight, and low-loss make these components attractive for broadband and multi-frequency applications. Components that are essential elements in the design of a microwave sensor can be fabricated with ferroelectric materials to achieve tunability over a broad frequency range. It has been reported that with a thin ferroelectric film placed between the top conductor layer and the dielectric material of a microstrip structure, and the proper DC bias scheme, tunable components above the Ku band can be fabricated. Components such as phase shifters, coupled line filters, and Lange couplers have been reported in the literature using this technique. In this wokr, simulated results from a full wave electromagnetic simulator are obtained to show the tunability of a matching netowrk typically used in the design of microwave amplifiers and antennas. In addition, simulated results of a multilayer Lange coupler, and a patch antenna are also presented. The results show that typical microstrip structures can be easily modified to provide frequency agile capabilities.

Citation Download Citation

Jose G. Colom-Ustariz, Rafael Rodriguez-Solis, Salmir Velez, and Snaider Rodriguez-Acosta "Frequency-agile microwave components using ferroelectric materials", Proc. SPIE 4881, Sensors, Systems, and Next-Generation Satellites VI, (8 April 2003); https://doi.org/10.1117/12.463043

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