Jonathan Jung Lynch

US Patent:

6384797, May 7, 2002

Filed:

Aug 1, 2000

Appl. No.:

09/629681

Inventors:

James H. Schaffner - Chatsworth CA
Daniel Sievenpiper - Los Angeles CA
Jonathan J. Lynch - Oxnard CA
Robert Y. Loo - Agoura Hills CA
Pyong K. Park - Tucson AZ

Assignee:

HRL Laboratories, LLC - Malibu CA

International Classification:

H01Q 340

US Classification:

343795, 343833, 343754

Abstract:

A multiple band reconfigurable reflecting antenna array and method for multiple band operation and beam steering. An array of dipole antennas is disposed on a multiple band high impedance surface. The antenna array is reconfigured by changing the length of the dipole elements, to thereby change the dipoles resonant frequency. At a given frequency band, small changes in dipole length allow to steer the reflected beam in the selected direction; whether large changes in dipole length permit to switch the operating frequency band. A method of broadening the bandwidth of a high impedance surface is also exposed.

US Patent:

6859181, Feb 22, 2005

Filed:

Jun 24, 2003

Appl. No.:

10/602786

Inventors:

Joseph S. Colburn - Malibu CA, US
Jonathan J. Lynch - Oxnard CA, US

Assignee:

General Motors Corporation - Detroit MI

International Classification:

H01Q021/00

US Classification:

343725, 343895, 343713

Abstract:

A low-profile antenna provides dual simultaneous operation. A first antenna has a circular polarization radiation pattern. A monopole antenna includes a hollow tube and is top-loaded by locating a disk on top of the hollow tube. A support structure positions the monopole antenna between the first antenna and a ground plane. The first antenna is a four arm spiral antenna. The four arm spiral antenna and monopole antenna are each fed by a cable with a first conductor and a second conductor. The radiation pattern of the four arm spiral antenna is maximum at forty-five degrees above the horizon and is null toward the horizon. The cable excites the monopole antenna with respect to the ground plane to transmit/receive vertical polarized signals. The radiation pattern of the monopole antenna is maximum towards the horizon. The first antenna and the monopole antenna operate simultaneously.

US Patent:

6867741, Mar 15, 2005

Filed:

May 23, 2002

Appl. No.:

10/154580

Inventors:

James H. Schaffner - Chatsworth CA, US
Jonathan J. Lynch - Oxnard CA, US
Daniel F. Sievenpiper - Los Angeles CA, US

Assignee:

HRL Laboratories, LLC - Malibu CA

International Classification:

H01Q019/06

US Classification:

343753, 343909, 343911 L

Abstract:

Disclosed is an antenna system including a Luneberg Lens having a spherically shaped outer surface and a spherically shaped focal surface spaced from its outer surface with a plurality of patch antenna elements disposed along the focal surface of the Luneberg Lens; and a power combiner for combining signals received by said plurality of patch antenna elements. The disclosed antenna system may be used a part of a robust GPS system having a plurality of GPS satellites each transmitting a GPS signal; a plurality of airborne GPS platforms, each GPS platform including a GPS transmitter for transmitting its own GPS signal, the GPS signals being transmitted from the plurality of airborne GPS platforms being differentiated from the GPS signals transmitted by visible GPS satellites; and at least one terrestrially located GPS receiver for receiving the GPS signals transmitted by visible ones of the GPS satellites and by visible ones of said airborne GPS platforms.

US Patent:

7020396, Mar 28, 2006

Filed:

Sep 25, 2002

Appl. No.:

10/256095

Inventors:

Hossein Izadpanah - Newbury Park CA, US
Jonathan Lynch - Oxnard CA, US
Mchran Mokhtari - Thousand Oaks CA, US
Keyvan Sayyah - Santa Monica CA, US

Assignee:

HRL Laboratories, LLC - Malibu CA

International Classification:

H04J 14/02
H04B 10/142

US Classification:

398 66, 398 32, 398 68, 398 69, 398 70, 398 71, 398 74, 398 75, 398 76, 398 77, 398 79, 398115, 398182, 398183

Abstract:

A method and apparatus for generating an arbitrary UWB waveform are presented. An optical comb generator generates a serial stream of optical tones and an optical beating tone. A serial-to-parallel converter receives the serial tones and converts them into parallel optical tones. A spatial light modulator receives the parallel optical tones, and independently adjusts at least one of the phase and amplitude of each to generate the components of an arbitrary waveform. Next, each one of a plurality of optical-to-electrical converters receives a parallel optical tone and the selected optical beating tone, which are beat with the optical beating tone, producing electrical notes, representing differences between each parallel optical tones and the optical beating tone. Each antenna element is connected to receive an electrical note and to launch a signal based thereon, such that the launched signals are superimposed to the arbitrary waveform signal.

US Patent:

7148848, Dec 12, 2006

Filed:

Oct 27, 2004

Appl. No.:

10/974303

Inventors:

Joseph S Colburn - Pacific Palisades CA, US
Adesunloye Obatoyinbo - Cambridge MA, US
Jonathan J Lynch - Oxnard CA, US

Assignee:

General Motors Corporation - Detroit MI

International Classification:

H01Q 1/38
H01Q 21/08

US Classification:

343700MS, 343810

Abstract:

A dual-band monopole antenna includes a ground plane. A metal plate is located a first distance from the ground plane and includes first and second portions connecting to form a first angle therebetween. A slot is formed in the metal plate that isolates a center portion of the metal plate. The dual-band monopole antenna communicates first radio frequency (RF) signals in a first RF band and second RF signals in a second RF band. A feed tab contacts an outer surface of the metal plate and is located the first distance from the ground plane. The first RF signals and the second RF signals are vertical polarized signals. The dual-band monopole antenna produces a radiation pattern that is omnidirectional in the azimuth plane and vertically polarized in a horizontal plane. The first RF band and the second RF band are independently tuned.

US Patent:

7151508, Dec 19, 2006

Filed:

Apr 16, 2004

Appl. No.:

10/826483

Inventors:

James H. Schaffner - Chatsworth CA, US
Jonathan J. Lynch - Oxnard CA, US
Daniel F. Sievenpiper - Los Angeles CA, US

Assignee:

HRL Laboratories, LLC - Malibu CA

International Classification:

H01Q 15/08
H01Q 19/06

US Classification:

343911L, 343753, 343909, 343754

Abstract:

Disclosed is an antenna system including a Luneberg Lens having a spherically shaped outer surface and a spherically shaped focal surface spaced from its outer surface with a plurality of patch antenna elements disposed along the focal surface of the Luneberg Lens; and a power combiner for combining signals received by said plurality of patch antenna elements. The disclosed antenna system may be used a part of a robust GPS system having a plurality of GPS satellites each transmitting a GPS signal; a plurality of airborne GPS platforms, each GPS platform including a GPS transmitter for transmitting its own GPS signal, the GPS signals being transmitted from the plurality of airborne GPS platforms being differentiated from the GPS signals transmitted by visible GPS satellites; and at least one terrestrially located GPS receiver for receiving the GPS signals transmitted by visible ones of the GPS satellites and by visible ones of said airborne GPS platforms.

US Patent:

7218281, May 15, 2007

Filed:

Jul 1, 2005

Appl. No.:

11/173187

Inventors:

Daniel F. Sievenpiper - Santa Monica CA, US
Joseph S. Colburn - Malibu CA, US
Bryan Ho Lim Fong - Los Angeles CA, US
Matthew W. Ganz - Marina del Rey CA, US
Mark F. Gyure - Oak Park CA, US
Jonathan J. Lynch - Oxnard CA, US
John Ottusch - Malibu CA, US
John L. Visher - Malibu CA, US

Assignee:

HRL Laboratories, LLC - Malibu CA

International Classification:

H01Q 1/38

US Classification:

343700MS, 343909

Abstract:

A method for guiding waves over objects, a method for improving a performance of an antenna, and a method for improving a performance of a radar are disclosed. The methods disclosed teach how an impedance structure can be used to guide waves over objects.

US Patent:

7345652, Mar 18, 2008

Filed:

Apr 16, 2004

Appl. No.:

10/826484

Inventors:

James H. Schaffner - Chatsworth CA, US
Jonathan J. Lynch - Oxnard CA, US
Daniel F. Sievenpiper - Los Angeles CA, US

Assignee:

HRL Laboratories, LLC - Malibu CA

International Classification:

H01Q 1/36
G01S 5/02

US Classification:

343911L, 343753, 343878, 343909, 343911 L, 34235701, 34235716, 34235706, 34235709

Abstract:

Disclosed is an antenna system including a Luneberg Lens having a spherically shaped outer surface and a spherically shaped focal surface spaced from its outer surface with a plurality of patch antenna elements disposed along the focal surface of the Luneberg Lens; and a power combiner for combining signals received by said plurality of patch antenna elements. The disclosed antenna system may be used a part of a robust GPS system having a plurality of GPS satellites each transmitting a GPS signal; a plurality of airborne GPS platforms, each GPS platform including a GPS transmitter for transmitting its own GPS signal, the GPS signals being transmitted from the plurality of airborne GPS platforms being differentiated from the GPS signals transmitted by visible GPS satellites; and at least one terrestrially located GPS receiver for receiving the GPS signals transmitted by visible ones of the GPS satellites and by visible ones of said airborne GPS platforms.