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IEEE MEMS & Sensors Workshop: Low Power MEMS-Enabled Wireless Transceivers
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10/28/2015
When: 10/28/2015
Where: Texas Instruments, Building E Conference Center
2900 Semiconductor Dr.
Santa Clara, California  95052
United States
Presenter: IEEE

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There are many mobile wireless capabilities quietly enabled by Microelectromechanical Systems (MEMS) technology, from inertial sensors that decide whether a phone should be in portrait or landscape mode, to FBAR duplexer filters that enable wireless communications in interference rich environments, to low-end timing oscillators needed by virtually all synchronous electronics. Recent research on higher end versions of the last of these (the oscillators) suitable for cell phone or other communication applications has shown that the extremely high Q’s and low shunt capacitance offered by MEMS permits unprecedented low power performance, even achieving marks that meet the challenging GSM phase noise specification while consuming less than 10μW of power. The wake of results like this has now yielded a fully functional transceiver employing a single multi-port high-Q MEMS resonator as the operative element in a super-regenerative topology to both transmit and her receiver using a similar topology, but employing instead a MEMS-based optomechanical oscillator, enables low power optical reception without the need for compound semiconductors. The most recent receiver harnesses resonant mechanical impact switching to enable continuous listening with zero power consumption, only consuming power when a valid input within its passband appears. This talk uses these and other examples to show how MEMS approaches to wireless communication can be very compelling for sensor network environments, e.g., the Internet of Things (IoT), where low power consumption is paramount.

 

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