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Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters

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Published on: February 4, 2018

Note: tunable notch filter based on liquid crystal technology for microwave applications.

V Urruchi¹, C Marcos, J Torrecilla

¹Departamento de Tecnología Electrónica, Universidad Carlos III, Butarque 15, E28911 Leganés, Madrid, Spain. vurruchi@ing.uc3m.es

The Review of Scientific Instruments

|March 8, 2013

Summary

This summary is machine-generated.

This study presents a compact, electrically tunable notch filter using liquid crystal (LC) technology for C-band satellite communications. The low-cost design offers frequency tunability with low power consumption.

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Area of Science:

Microwave Engineering
Materials Science

Background:

Electrically tunable filters are crucial for dynamic frequency selection in wireless communication systems.
Liquid crystal (LC) technology offers potential for low-cost, low-power tunable microwave devices.

Purpose of the Study:

To design, manufacture, and characterize a compact, electrically tunable notch filter using LC technology.
To achieve frequency tunability at microwave C-band frequencies for satellite communications.

Main Methods:

Utilized low-cost inverted-microstrip and conventional spurlines structures for filter design.
Employed highly anisotropic nematic LC mixtures for tunability.
Applied low AC voltages for central frequency tuning.

Main Results:

Successfully designed and characterized a compact, tunable notch filter.
Demonstrated frequency tunability in the microwave C-band.
Achieved tunability using low AC voltages, indicating low power consumption.

Conclusions:

The proposed LC-based notch filter is a viable solution for tunable microwave applications.
The design offers a compact, low-cost, and low-power alternative for C-band satellite communication systems.