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Hybrid Ultra-Compact 4th Order Band-Pass Filters Based On Piezoelectric AlN Contour-Mode MEMS Resonators
Departmental Papers (ESE)
  • Chengjie Zuo, University of Pennsylvania
  • Nipun Sinha, University of Pennsylvania
  • Carlos R. Perez, University of Pennsylvania
  • Rashed Mahameed, University of Pennsylvania
  • Marcelo B. Pisani, University of Pennsylvania
  • Gianluca Piazza, University of Pennsylvania
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 these are achieved in an extremely small footprint and by using just half the space that any other 4th order filter would have taken. In terms of nonlinearities, the 110 MHz filter shows a 1 dB compression point higher than +63 dBmV and input third order intercept point (IIP3) values well beyond +153 dBmV. This new hybrid design represents a net improvement over the state of the art and constitutes a very promising solution for intermediate frequency (IF) filtering in many wireless communication systems.
Document Type
Journal Article
Date of this Version
Presented at 2008 Solid-State Sensors, Actuators, and Microsystems Workshop, June 2008, 4 pages.
  • Hybrid,
  • Band-Pass Filter,
  • Piezoelectric,
  • AlN Contour-Mode Resonator,
  • MEMS
Citation Information
Chengjie Zuo, Nipun Sinha, Carlos R. Perez, Rashed Mahameed, et al.. "Hybrid Ultra-Compact 4th Order Band-Pass Filters Based On Piezoelectric AlN Contour-Mode MEMS Resonators" (2008)
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