Higherground, Inc.

Leland Stanford Junior University

Abb Schweiz Ag

Paul Christopher Hansen

Robert S Reis

Mark Evan Russell

Lambertus Hesselink

Yuzuru Takashima

J Brian Leen

Raphael N Desbiens

Yao-Te Cheng

Kyle Owen

John Savee

Dmitry Skvortsov

Max Yuen

Yin Yuen

In accordance with the invention, an X-ray amplitude analyzer grating adapted for use in an interferometric imaging system, the interferometric imaging system comprising an X-ray source and an X-ray detector with an X-ray fringe plane between the X-ray source and the X-ray detector, wherein an X-ray fringe pattern is formed at the X-ray fringe plane, wherein the X-ray amplitude analyzer grating is provided. The X-ray amplitude analyzer grating comprises a plurality of grating pixels across two dimensions of the X-ray amplitude analyzer grating, wherein each grating pixels of the plurality of grating pixels has a different pattern with respect to all adjacent grating pixels to the grating pixel so that all adjacent grating pixels do not have a same pattern as the grating pixel.

Single shot analyzer grating for differential phase contrast X-ray imaging and computed tomography

Systems and methods for skewed basis set fitting may include obtaining measured absorption data indicative of an amount of absorption of light by a sample gas at each of multiple frequencies, determining an absorption dependent cavity time constant indicative of a skew to the measured absorption data caused by light reflections within a cavity in which the sample gas is contained, obtaining reference absorption data including basis sets indicative of reference amounts of light absorbed by each of multiple gases at each of the multiple frequencies, skewing the reference absorption data based on the absorption dependent cavity time constant to generate skewed reference absorption data, and fitting the measured absorption data to the skewed reference absorption data to identify an amount of at least one constituent gas within the sample gas.

Systems and methods for skewed basis set fitting

In one embodiment, a terminal of a first wireless communication network determines a protection zone for each of a plurality of unintended receivers of a second wireless communication network, where a protection zone defines a geographical area where transmission by the terminal might interfere with operation of a corresponding unintended receive. At the time of an attempted transmission, the terminal determines its current location, and whether the current location is within any protection zone of the plurality of unintended receivers. If not within any protection zone of the plurality of unintended receivers, the terminal performs the transmission, but if so, then the terminal may then perform a local assessment of interference to the one or more unintended receivers. Once concluding that there would be no interference with any of the one or more unintended receivers, the terminal may then perform the transmission. Otherwise, the terminal prevents the transmission.

Avoidance of interference in wireless communications

In one embodiment, a device of a first wireless communication network determines location information and antenna properties corresponding to each of a plurality of unintended receivers of a second wireless communication network. The device may then compute a protection zone for each of the plurality of unintended receivers based on the location information and antenna properties, wherein a protection zone defines a geographical area where transmission by a terminal in the first wireless communication network might interfere with operation of a corresponding unintended receiver. As such, the terminal may thus determine whether to perform or prevent an attempted transmission to an intended receiver in the first wireless communication network based on whether a current location of the terminal, at a time of the attempted transmission by the terminal, is within any protection zone of the plurality of unintended receivers.

Computing protection zones for avoidance of interference in wireless communications

Transmission efficiency and/or spatial resolution provided by resonant apertures can be enhanced by disposing a tip on part of the screen that extends laterally into the aperture. For example, a tip disposed on the ridge of a C-shaped aperture can dramatically improve performance. A spatial resolution of &#x3bb;/50 has been experimentally demonstrated with this approach. The combination of high spatial resolution and high transmission efficiency provided by this approach enables many applications, such as near field optical probes for near field scanning optical microscopy (NSOM). Another application is high resolution electron sources, where an photoelectron emitter can be disposed at or near a tip+aperture structure such that the high resolution optical near-field provides a correspondingly high resolution electron source.

Tip-enhanced resonant apertures

Growing community of inventors

Palo Alto, CA, United States of America

Paul Christopher Hansen