- High-Q tunable RF/microwave and millimeter-wave devices and systems
- Micro/Nano-ElectroMechanical (M/NEMS) Systems and RF MEMS sensors and actuators: physics, design, fabrication techniques and characterization
- Terahertz (THz) electronics
- Xiaoguang Liu, Linda P. B. Katehi, William J. Chappell, and Dimitrios Peroulis, “High-Q Tunable Microwave Cavity Resonators and Filters using SOI-based RF MEMS Tuners,” IEEE/ASME Journal of Microelectromechanical Systems, Vol. 19, No. 4, pp. 774-784, Aug. 2010. DOI: 10.1109/JMEMS.2010.2055544
- Xiaoguang Liu, Linda P. B. Katehi, William J. Chappell, and Dimitrios Peroulis, “A 3.4-6.2 GHz Continuously Tunable Electrostatic MEMS Resonator with Quality Factor of 460-530,” 2009 IEEE MTT-S International Microwave Symposium, Boston, MA, USA, Jun. 2009. DOI: 10.1109/MWSYM.2009.5165905
In order to determine their application space of this technology, its power handling capability must be carefully characterized. Dr. Liu made the first theoretical explanation of the non-linear responses and power handling capability of tunable evanescent-mode resonators and filters. The theory is also valid for other type of electrostatic MEMS enabled tunable resonators/filters and reveals for the first time the impact of electromagnetic resonance on their power handling capabilities.
- Xiaoguang Liu, Linda P. B. Katehi, William J. Chappell, and Dimitrios Peroulis, “Power Handling of High-Q MEMS Tunable Evanescent-mode Resonators and Filters,” the IEEE Transactions on Microwave Theory and Techniques, DOI: 10.1109/TMTT.2011.2176136
- Xiaoguang Liu, Linda P. B. Katehi, William J. Chappell, and Dimitrios Peroulis, “Power Handling Capability of High-Q Evanescent-mode RF MEMS Resonators with Flexible Diaphragm,” 2009 Asia-Pacific Microwave Conference, Singapore, Dec. 2009. DOI: 10.1109/APMC.2009.5385409
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