公开(公告)号：US20210218411A1

公开(公告)日：2021-07-15

申请号：US17059709

申请日：2019-05-29

Applicant: King Abdullah University of Science and Technology

Inventor： Abdulaziz ALHOSHANY ,  Khaled Nabil SALAMA

IPC: H03M1/46 ,  H03M1/12

Abstract: Circuitry and techniques are described herein for performing accurate and low power conversion of an analog value into a digital value. According to some aspects, this disclosure describes a successive approximation register (SAR) analog to digital converter (ADC). According to some aspects the SAR ADC comprises an active integrator between a sample and hold stage and a comparator stage. The active integrator operates differently dependent on whether the SAR ADC is operated in a sample phase or a conversion phase. According to other aspects, the SAR ADC utilizes a ring oscillator-based comparator to compare a sampled analog input value to a plurality of reference values to determine a digital value representing the analog value.

公开(公告)号：US20180372664A1

公开(公告)日：2018-12-27

申请号：US15741451

申请日：2016-07-01

Applicant: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Ulrich BUTTNER ,  Khaled Nabil SALAMA ,  Christos SAPSANIS

IPC: G01N27/22 ,  B23K26/362 ,  B23K26/40

Abstract: Methods of fabricating devices vial selective laser etching are provided. The methods can include selective laser etching of a portion of a metal layer, e.g. using a laser light source having a wavelength of 1,000 nm to 1,500 nm. The methods can be used to fabricate a variety of features, including an electrode, an interconnect, a channel, a reservoir, a contact hole, a trench, a pad, or a combination thereof. A variety of devices fabricated according to the methods are also provided. In some aspects, capacitive humidity sensors are provided that can be fabricated according to the provided methods. The capacitive humidity sensors can be fabricated with intricate electrodes, e.g. having a fractal pattern such as a Peano curve, a Hilbert curve, a Moore curve, or a combination thereof.

公开(公告)号：US20180137916A1

公开(公告)日：2018-05-17

申请号：US15572852

申请日：2016-06-03

Applicant: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY ,  THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

Inventor： Khaled Nabil SALAMA ,  Mohammed Affan ZIDAN ,  Fadi J. KURDAHI ,  Ahmed ELTAWIL

IPC: G11C15/04

CPC classification number: G11C15/046 ,  G11C13/0002 ,  G11C13/0007 ,  G11C13/0023

Abstract: Various examples are provided examples related to resistive content addressable memory (RCAM) based in-memory computation architectures. In one example, a system includes a content addressable memory (CAM) including an array of cells having a memristor based crossbar and an interconnection switch matrix having a gateless memristor array, which is coupled to an output of the CAM. In another example, a method, includes comparing activated bit values stored a key register with corresponding bit values in a row of a CAM, setting a tag bit value to indicate that the activated bit values match the corresponding bit values, and writing masked key bit values to corresponding bit locations in the row of the CAM based on the tag bit value.

公开(公告)号：US20180069486A1

公开(公告)日：2018-03-08

申请号：US15556118

申请日：2016-05-26

Applicant: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Mahmoud Hamdy OUDA ,  Khaled Nabil SALAMA

IPC: H02M7/219 ,  H02J50/80

CPC classification number: H02J50/20 ,  H02J5/00 ,  H02J50/80 ,  H02M7/02 ,  H02M7/219 ,  H02M2007/2195 ,  H04B5/0037

Abstract: Various examples are provided related to radio frequency (RF) to direct current (DC) power conversion. In one example, a RF-to-DC converter includes a fully cross-coupled rectification circuit including a pair of forward rectifying transistors and a feedback circuit configured to provide feedback bias signals to gates of the pair of forward rectifying transistors via feedback branch elements. In another example, a method includes receiving a radio frequency (RF) signal; rectifying the RF signal via a fully cross-coupled rectification circuit including a pair of forward rectifying transistors; and providing a DC output voltage from an out put connection of the fully cross-coupled rectification circuit, where gating of the pair of forward rectifying transistors is controlled by feedback bias signals provided to gates of the pair of forward rectifying transistors via feedback branch elements.