Ferrite-Rod Antenna Driven Wireless Resoswitch Receiver


A micromechanical resoswitch receiver coupled to a 23.7-kHz wireless channel via a ferrite-rod
antenna successfully demonstrates short-range wireless reception with resoswitch sensitivity
better than –62 dBm at an on-off keying (OOK) bit rate of 0.9 kbit/s. The demonstrated
performance confirms models that predict the maximum bit rate of such a receiver, revealing an
ability to adapt to bit rates as high as 8 kbit/s sans antenna that surprisingly are not limited
mechanically, but then reduce upon introduction of finite electrical bandwidth antennas. Indeed,
the demonstrated wireless resoswitch receiver displays a bit rate-to-sensitivity trade-off governed
by the finite rise time of the signal received by the antenna. Meanwhile, the receiver consumes no
power while waiting and listening for valid inputs. Unlike an RFID tag, this resoswitch receiver
rejects strong interferers via the much higher Q of its mechanical resonance, allowing it to serve
applications that must operate in congested wireless environments.

Keywords: Resoswitch, wireless, receiver, antenna, bit rate, low power, resonator, micromechanical, quality factor

Publication date: 
January 15, 2023
Publication type: 
Conference Paper (Proceedings)
Kevin H. Zheng, Qiutong Jin, and Clark T.-C. Nguyen, "Ferrite-Rod Antenna Driven Wireless Resoswitch Receiver" Proceedings of the 36th IEEE Micro Electro Mechanical Systems Conference, Jan. 2023.

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