公开(公告)号：US11274983B2

公开(公告)日：2022-03-15

申请号：US16625521

申请日：2018-06-15

Applicant: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Amal Hajjaj ,  Md Abdullah Al Hafiz ,  Mohammad Ibrahim Younis

IPC: G01L9/00 ,  G01L19/00

Abstract: An electromechanical pressure sensor includes an electromechanical resonator having a driving electrode, a sensing electrode, and a beam resonator arranged between the driving and sensing electrodes. The beam resonator includes a resonator beam coupled on a first end to a first fixed anchor and coupled on a second end to a fixed second fixed anchor. The electromechanical resonator also includes a first voltage source coupled to the driving electrode and configured to provide an alternating current to the driving electrode and a second voltage source coupled to the first fixed anchor. The second voltage source provides a DC bias to the resonator beam. The electromechanical resonator further includes a third voltage source coupled to the resonator beam via the first and second fixed anchors. The third voltage source is configured to supply a voltage to the resonator beam that results in a temperature differential between the resonator beam and the first and second fixed anchors. The electromechanical resonator also includes a processor coupled to the sensing electrode and configured to correlate a voltage on the sensing electrode with a pressure value.

公开(公告)号：US10355695B2

公开(公告)日：2019-07-16

申请号：US15769532

申请日：2016-12-08

Applicant: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Md Abdullah Al Hafiz ,  Lakshmoji Kosuru ,  Mohammad Ibrahim Younis

IPC: H03K19/02 ,  H03K19/20 ,  H03K19/21

Abstract: Various examples of reprogrammable universal logic devices are provided. In one example, the device can include a tunable AC input to an oscillator/resonator; a first logic input and a second logic input to the oscillator/resonator, the first and second logic inputs provided by separate DC voltage sources (VA, VB), each of the first and second logic inputs including an on/off switch (A, B); and the oscillator/resonator including an output terminal. The tunable oscillator/resonator can be a MEMS/NEMS resonator. Switching of one or both of the first or second logic inputs on or off in association with the tuning of the AC input can provide logic gate operation. The device can easily be extended to a 3-bit or n-bit device by providing additional logic inputs. Binary comparators and encoders can be implemented using a plurality of oscillators/resonators.

公开(公告)号：US10771041B2

公开(公告)日：2020-09-08

申请号：US16318220

申请日：2017-08-08

Applicant: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Md Abdullah Al Hafiz ,  Mohammad Ibrahim Younis ,  Lakshmoji Kosuru

IPC: H03H9/02 ,  H03H9/24 ,  H03H9/46

Abstract: Embodiments of a tunable bandpass microelectromechanical (MEMS) filter are described. In one embodiment, such a filter includes a pair of arch beam microresonators, and a pair of voltage sources electrically coupled to apply a pair of adjustable voltage biases across respective ones of the pair of arch beam microresonators. The pair of voltage sources offer independent tuning of the bandwidth of the filter. Based on the structure and arrangement of the filter, it can be tunable by 125% or more by adjustment of the adjustable voltage bias. The filter also has a relatively low bandwidth distortion, can exhibit less than 2.5 dB passband ripple, and can exhibit sideband rejection in the range of at least 26 dB.

公开(公告)号：US10560098B2

公开(公告)日：2020-02-11

申请号：US16332150

申请日：2017-09-21

Applicant: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Saad Ilyas ,  Md Abdullah Al Hafiz ,  Hossein Fariborzi ,  Mohammad Ibrahim Younis

IPC: H03K19/02 ,  H03H9/02 ,  H03H9/24 ,  H03K19/20 ,  H03K19/21

Abstract: A mechanical resonator-based cascadable logic device includes which includes a resonator having a beam with a first fixed end, a second fixed end, and a length between the first and second fixed ends. A first electrode and a second electrode are aligned along a first side of the beam. A third electrode and a fourth electrode are aligned along a second side of the beam and opposite the first and second electrodes. A DC voltage source is coupled to one of the first and second fixed ends of the beam. At least one of the first, second, third, and fourth electrodes is coupled to a first AC voltage source so that a logic operation is performed by activating a second resonant mode of the resonator.