Andrew J Compston

US Patent:

8436780, May 7, 2013

Filed:

Aug 16, 2010

Appl. No.:

12/857528

Inventors:

Hans Gregory Schantz - Hampton Cove AL, US
Eric Richards - Madison AL, US
Andrew Compston - Stanford CA, US

Assignee:

Q-Track Corporation - Huntsville AL

International Classification:

H01Q 7/08

US Classification:

343788, 343866

Abstract:

An inexpensive planar antenna fabricated as a plurality of parallel layers of multi turn spiral loops co-located with conductive material at the center of the loops, there being an exclusion zone free of conductive material between the innermost loop and the conductive material at the center. The conductive material may comprise circuit elements, for example batteries, amplifiers, antenna drivers or other functional elements as well as passive elements. In one embodiment, the loop traces may be staggered. In another embodiment, the loop traces are varied in width as a function of position within the loop cross section. In further embodiments, the planar form is integrated with additional orthogonal planar antennas substantially coplanar with the first planar antenna and having axes orthogonal to the first planar antenna and to one another. In further embodiments the exclusion zone is extended by design rules and confining routes in a circuit section. The antenna system may be configured as a three dimensional omnidirectional antenna and is well adapted for small form factor hand held and portable wireless applications.

US Patent:

20090280742, Nov 12, 2009

Filed:

Feb 23, 2009

Appl. No.:

12/391209

Inventors:

Hans Gregory Schantz - Huntsville AL, US
Andrew Compston - Stanford CA, US
Robert DePierre - Huntsville AL, US
James Matthew Barron - Huntsville AL, US

Assignee:

Q-Track Corporation - Huntsville AL

International Classification:

H04B 5/00

US Classification:

455 411

Abstract:

A multiple phase state near-field electromagnetic location and communication system includes a multiple phase state near-field transmitter, and a near-field locator receiver. The near-field transmitter is capable of operation in at least two states and each of these at least two states generates a state characteristic difference detected at the near-field locator receiver. The state characteristic difference may be employed for location determination, communication or both. The present invention is particularly well-suited for use in conjunction with a near-field electromagnetic ranging system. In further embodiments, a multiple phase state near-field electromagnetic location and communication process includes the steps of determining a transmission state for a near-field quadrature transmitter, transmitting a near-field transmission corresponding to said transmission state, receiving a near-field transmission corresponding to said transmission state, and determining a difference between at least two properties of said near-field transmission where the difference is characteristic of and corresponding to the transmission state.

US Patent:

20210257396, Aug 19, 2021

Filed:

Feb 18, 2021

Appl. No.:

17/179040

Inventors:

- San Francisco CA, US
Alexander Alexeevich Gondarenko - San Jose CA, US
Steven Andrew Fortune - Wanaka, NZ
Andrew James Compston - San Francisco CA, US
Robert Francis Wiser - San Francisco CA, US
Remus Nicolaescu - San Francisco CA, US

International Classification:

H01L 27/146
G01S 7/481
G01S 17/89

Abstract:

A single and dual path light detection and ranging (LiDAR) system can transmit and receive light through a silicon substrate backside of a photonic integrated circuit (PIC). The PIC can be interface with an electrical integrated circuit (EIC) using a front side that connects to the EIC using electrical contacts and a backside that faces away from the EIC. High density coupler elements (e.g., pixels, gratings) can emit and receive infrared light that propagates through the PIC layers and the backside towards objects to detection.

US Patent:

20210141058, May 13, 2021

Filed:

Nov 12, 2020

Appl. No.:

17/096399

Inventors:

- San Francisco CA, US
Alexander Alexeevich Gondarenko - San Jose CA, US
Steven Andrew Fortune - Wanaka, NZ
Andrew James Compston - San Francisco CA, US
Robert Francis Wiser - San Francisco CA, US
Remus Nicolaescu - San Francisco CA, US

International Classification:

G01S 7/484
G01S 7/481
G01S 17/34
G01S 7/4861
G01S 7/497

Abstract:

A dual path configuration Integrated LiDAR architecture can contain a focal plane transmitter and a focal plane coherent receiver. The integrated LiDAR transmitter can contain an optical frequency chirp generator and a focal plane optical beam scanner with integrated driving electronics. The integrated LiDAR receiver architecture can be implemented with per-pixel coherent detection and amplification.

US Patent:

20210096259, Apr 1, 2021

Filed:

Sep 25, 2020

Appl. No.:

17/033262

Inventors:

- San Francisco CA, US
Alexander Alexeevich Gondarenko - San Jose CA, US
Steven Andrew Fortune - Wanaka, NZ
Andrew James Compston - San Francisco CA, US
Robert Francis Wiser - San Francisco CA, US
Remus Nicolaescu - San Francisco CA, US

International Classification:

G01S 17/894
G01S 7/493

Abstract:

A dynamically reconfigurable Light Detection and Ranging (LiDAR) system can generate improved ranging data one or more regions of three-dimensional (3D) images generated by the system. The images can be segmented, and global or local optical characteristics (e.g., power, illumination duration, bandwidth, framerate frequency) of the light can be modified to increase the 3D image quality for the segments of the image.