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公开(公告)号：US20190165757A1
公开(公告)日：2019-05-30
申请号：US16318220
申请日：2017-08-08
Inventor： Md Abdullah AL HAFIZ , Mohammad Ibrahim YOUNIS , Lakshmoji KOSURU
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.
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公开(公告)号：US20180316353A1
公开(公告)日：2018-11-01
申请号：US15769532
申请日：2016-12-08
Inventor： Md Abdullah AI HAFIZ , Lakshmoji KOSURU , Mohammad Ibrahim YOUNIS
IPC: H03K19/02
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.
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