Jeffrey David Walling

US Patent:

8547177, Oct 1, 2013

Filed:

May 12, 2011

Appl. No.:

13/106739

Inventors:

Sangmin Yoo - Seattle WA, US
David Allstot - Seattle WA, US
Jeffrey Walling - Highland Park NJ, US

Assignee:

University of Washington through its Center For Commercialization - Seattle WA

International Classification:

H03F 3/68

US Classification:

330295, 330 51

Abstract:

Disclosed herein is an improved power amplifier, referred to as a Switched-Capacitor Radio Frequency Power Amplification (SCPA). The SCPA may be fabricated with scale CMOS technology. The SCPA may include a plurality of stages, each stage including a storage device, a switch, and selection circuitry. Various combinations of the stages may produce an output signal based on characteristics of a reference signal to be amplified. The output from the stages may be combined to create an amplified approximate square wave. The amplified square wave may be filtered by output circuitry such as a bandpass matching circuit, resulting in an output signal that may be an amplified version of the reference signal.

US Patent:

8565109, Oct 22, 2013

Filed:

Jan 26, 2011

Appl. No.:

13/014543

Inventors:

Radha Poovendran - Seattle WA, US
Sidharth Nabar - Seattle WA, US
Jeffrey Walling - Seattle WA, US

Assignee:

University of Washington through its Center of Commercialization - Seattle WA

International Classification:

H04L 12/26
H04W 4/00
H04J 3/16

US Classification:

370252, 370231, 370328, 370346, 713300, 713320

Abstract:

A communication-management method involves a recurring polling scheme, wherein network nodes are polled by a base station according to optimized and/or user-preferred polling intervals assigned to each network node. The polling interval assigned to a given node may be optimized to minimize and/or achieve user-preferred thresholds for energy consumption and latency associated with each network node in the sensor network. Optimized and/or user-preferred polling intervals may be constrained in accordance with various network performance considerations, for example, a recommended update interval for each network node, characteristics of the network nodes themselves, the duration of the timselots at which the network nodes are polled, and/or other network performance considerations.

US Patent:

20130343360, Dec 26, 2013

Filed:

Aug 27, 2013

Appl. No.:

14/011706

Inventors:

Sidharth Nabar - Seattle WA, US
Jeffrey Walling - Seattle WA, US

Assignee:

University of Washington through its Center for Commercialization - Seattle WA

International Classification:

H04W 72/04

US Classification:

370336

Abstract:

A communication-management method involves a recurring polling scheme, wherein network nodes are polled by a base station according to optimized and/or user-preferred polling intervals assigned to each network node. The polling interval assigned to a given node may be optimized to minimize and/or achieve user-preferred thresholds for energy consumption and latency associated with each network node in the sensor network. Optimized and/or user-preferred polling intervals may be constrained in accordance with various network performance considerations, for example, a recommended update interval for each network node, characteristics of the network nodes themselves, the duration of the timselots at which the network nodes are polled, and/or other network performance considerations.