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Hybrid Ultra-Compact 4th Order Band-Pass Filters Based On Piezoelectric Aln Contour-Mode Mems Resonators, Chengjie Zuo, Nipun Sinha, Carlos R. Perez, Rashed Mahameed, Marcelo B. Pisani, Gianluca Piazza
Hybrid Ultra-Compact 4th Order Band-Pass Filters Based On Piezoelectric Aln Contour-Mode Mems Resonators, Chengjie Zuo, Nipun Sinha, Carlos R. Perez, Rashed Mahameed, Marcelo B. Pisani, Gianluca Piazza
Chengjie Zuo
This work reports on the design, fabrication and testing of a new class of hybrid (filter design using combined electrical and mechanical coupling techniques) ultra-compact (800×120 μm) 4th order band-pass filters based on piezoelectric Aluminum Nitride (AlN) contour-mode microelectromechanical (MEM) resonators. The demonstrated 110 MHz filter shows a low insertion loss of 5.2 dB in air, a high out-of-band rejection of 65 dB, a fractional bandwidth as high as 1.14% (hard to obtain when only conventional electrical coupling is used in the AlN contour-mode technology), and unprecedented 30 dB and 50 dB shape factors of 1.93 and 2.36, respectively. All …
Etude D’Une Centrale Hybride Photovoltaïque - Éolien – Diesel, Djamila Rekioua Pr
Etude D’Une Centrale Hybride Photovoltaïque - Éolien – Diesel, Djamila Rekioua Pr
REKIOUA Djamila Dr
The electrical energy using renewable hybrids are known, medium-term interest thanks to their flexibility vis-à-vis the primary energy sources. The objective of this work is the study of a hybrid central power, which combines two renewable energy sources (wind, solar) with storage and an emergency generator. The management of different energy sources is ensured by a manager who controls the opening and closing switches, depending on weather conditions (illumination, wind speed).