Kenneth Nelson Stewart

US Patent:

7618600, Nov 17, 2009

Filed:

Jul 13, 2006

Appl. No.:

11/487527

Inventors:

Weifang Luo - Livermore CA, US
Kenneth D. Stewart - Valley Springs CA, US

Assignee:

Sandia Corporation - Livermore CA

International Classification:

B01J 8/02
B01J 35/02
B01D 59/26

US Classification:

422211, 96108

Abstract:

Disclosed is a device for removing trace amounts of ammonia from a stream of gas, particularly hydrogen gas, prepared by a reformation apparatus. The apparatus is used to prevent PEM “poisoning” in a fuel cell receiving the incoming hydrogen stream.

US Patent:

20120329523, Dec 27, 2012

Filed:

Jun 13, 2012

Appl. No.:

13/495220

Inventors:

Kenneth Anderson Stewart - Sunnyvale CA, US
Larry G. Fischer - Waseca MN, US

Assignee:

LGC WIRELESS, LLC - San Jose CA

International Classification:

H04W 88/00

US Classification:

4555621

Abstract:

One embodiment is directed to a distributed antenna system comprising a host unit and at least one remote antenna unit that is communicatively coupled to the host unit. The remote antenna unit is configured to perform self-interference suppression processing in an upstream signal path using, as an input thereto, a feedback signal derived from the downstream radio frequency signal radiated from the antenna. Other embodiments are disclosed.

US Patent:

20130003658, Jan 3, 2013

Filed:

Jun 29, 2012

Appl. No.:

13/538170

Inventors:

Kenneth Anderson Stewart - Sunnyvale CA, US
Larry G. Fischer - Waseca MN, US

Assignee:

LGC WIRELESS, LLC - San Jose CA

International Classification:

H04B 1/38
H04W 4/00

US Classification:

370328, 375219

Abstract:

One embodiment is directed to a distributed antenna system (DAS) including a host unit and a plurality of remote units. The host unit includes a plurality of base transceiver stations and a switch. Each of the base transceiver stations is configured to provide a downstream baseband digital signal to the switch and to receive an upstream baseband digital signal from the switch, wherein each downstream baseband digital signal and upstream baseband digital signal is a digital representation of the RF channel at baseband of the respective base transceiver station. The switch is configured to route each of the downstream baseband digital signals to a respective subset of the remote units as one or more downstream serial data streams and to route each of the upstream baseband digital signals from one or more upstream serial data streams to a respective subset of the base transceiver stations.

US Patent:

20130210490, Aug 15, 2013

Filed:

Feb 13, 2013

Appl. No.:

13/765848

Inventors:

ADC Telecommunications, Inc. - , US
Kenneth Anderson Stewart - Sunnyvale CA, US
Lance K. Uyehara - San Jose CA, US

Assignee:

ADC TELECOMMUNICATIONS, INC. - Shakopee MN

International Classification:

H04W 88/08

US Classification:

455561

Abstract:

A distributed antenna system includes a host unit communicatively coupled to a first service provider interface which receives a first signal from the first service provider interface; and a first remote antenna unit communicatively coupled to the host unit, the first remote antenna unit having a first antenna. A base station to which the distributed antenna system is communicatively coupled is configured with a subscriber access timing window having a minimum allowed delay and a maximum allowed delay. The distributed antenna system is configured so that a first total delay between the host unit and the first remote antenna unit is equal to or greater than the minimum allowed delay. The first antenna of the first remote antenna unit is configured to communicate the first signal to a first subscriber unit.

US Patent:

20130315168, Nov 28, 2013

Filed:

Jul 30, 2013

Appl. No.:

13/953778

Inventors:

Sandeep H. Krishnamurthy - Mountain View CA, US
Kenneth A. Stewart - Grayslake IL, US
Ziangyang Zhuang - Lake Zurich IL, US
Robert T. Love - Barrington IL, US

International Classification:

G01S 5/10

US Classification:

370329

Abstract:

A base station communicates a positioning reference signal (PRS) to wireless communication devices over a downlink in a wireless communication system by encoding a PRS into a first set of transmission resources, encoding other information into a second set of transmission resources, multiplexing the two sets of resources into a subframe such that the first set of resources is multiplexed into at least a portion of a first set of orthogonal frequency division multiplexed (OFDM) symbols based on an identifier associated with the base station and the second set of resources is multiplexed into a second set of OFDM symbols. Upon receiving the subframe, a wireless communication device determines which set of transmission resources contains the PRS based on the identifier associated with the base station that transmitted the subframe and processes the set of resources containing the PRS to estimate timing (e.g., time of arrival) information.

US Patent:

20210327286, Oct 21, 2021

Filed:

Aug 23, 2019

Appl. No.:

17/270483

Inventors:

- Menlo Park CA, US
Kenneth Stewart - Menlo Park CA, US

International Classification:

G08G 5/00
H04W 4/021
H04W 4/42
B64C 39/02

Abstract:

An apparatus, system and method for managing airspace for unmanned aerial vehicles (UAVs). The apparatus, system and method may include a platform comprising at least records of certified administratively acceptable requestors of restricted use of the airspace for UAVs, a plurality of airspace management rules for UAVs, and a broadcaster for providing notifications over at least one telecommunications network; and a plurality of applications, each instantiated by a processor on one of a plurality of corresponded devices by non-transitory computing code, wherein the plurality of corresponded devices comprises at least a plurality of mobile devices. A first of the plurality of applications may be capable of receiving the restricted UAV use request from a requestor within a physical area of the restricted UAV use request, and of forwarding the restricted UAV use request and an identification of the requestor to the platform over the at least one telecommunications network.

US Patent:

20210312817, Oct 7, 2021

Filed:

Aug 23, 2019

Appl. No.:

17/270518

Inventors:

- Menlo Park CA, US
Kenneth Stewart - Menlo Park CA, US

International Classification:

G08G 5/00
H04W 4/06
H04W 4/021
H04W 4/42

Abstract:

An apparatus, system and method for managing airspace for unmanned aerial vehicles (UAVs). The apparatus, system and method may include a platform comprising at least records of certified administratively acceptable requestors of restricted use of the airspace for UAVs, a plurality of airspace management rules for UAVs, and a broadcaster for providing notifications over at least one telecommunications network; and a plurality of applications, each instantiated by a processor on one of a plurality of corresponded devices by non-transitory computing code, wherein the plurality of corresponded devices comprises at least a plurality of mobile devices. A first of the plurality of applications may be capable of receiving the restricted UAV use request from a requestor within a physical area of the restricted UAV use request, and of forwarding the restricted UAV use request and an identification of the requestor to the platform over the at least one telecommunications network.