Jonathan P Gordon

US Patent:

7145504, Dec 5, 2006

Filed:

Mar 11, 2004

Appl. No.:

10/800053

Inventors:

Irwin L. Newberg - Pacific Palisades CA, US
John K. Keigharn - Rancho Palos Verdes CA, US
Jonathan D. Gordon - Hermosa Beach CA, US
Garin S. Bircsak - No. Hollywood CA, US

Assignee:

Raytheon Company - Waltham MA

International Classification:

G01S 7/40

US Classification:

342169, 342165, 342195

Abstract:

A system for generating a simulated radar return signal. The novel system includes a processor adapted to receive target and waveform parameters and in accordance therewith generate a composite digital signal, and a digital to analog converter adapted to convert the digital signal to an analog signal. The system also includes an upconverter adapted to convert the analog signal to radio frequency. The processor calculates time-domain digital data samples representing a composite radar return waveform based on the target and waveform parameters. These data samples are output at each time interval that the digital to analog converter samples data. The composite waveform can include returns from a large number of targets and from targets embedded in clutter. The system can also be adapted to test a radar system having multiple antenna ports by replicating the basic design for each port.

US Patent:

7345539, Mar 18, 2008

Filed:

Feb 10, 2005

Appl. No.:

11/054968

Inventors:

Reza Tayrani - Marina Del Rey CA, US
Jonathan D. Gordon - Hermosa Beach CA, US

Assignee:

Raytheon Company - Waltham MA

International Classification:

H03F 1/04

US Classification:

330207A, 330302, 330251

Abstract:

A Class-E load circuit topology suitable for switching mode Power Amplifiers (PAs). The inventive load includes a shunt inductive element coupled to an output of said amplifier; a series inductive element coupled to said output of said amplifier; and a series capacitive element coupled to said series inductive element. In the illustrative embodiment, the inventive load is operable at frequencies in the range of 8-10 GHz and the shunt inductive element is an inductive bias line for said amplifier. The invention enables an advantageous Class-E amplifier design comprising an input matching network; an active device coupled to the input matching network and a load coupled to the active device and implemented in accordance with the present teachings. Also disclosed is a method for designing a load for use with a Class-E amplifier including the steps of: providing a lumped equivalent circuit representation of the load; optimizing the lumped equivalent circuit representation of the load to achieve near ideal current and voltage operational characteristics over a predetermined frequency range using a time domain simulation; transforming the optimized lumped equivalent circuit representation of the load to a distributed circuit representation; and optimizing the distributed circuit representation of the load to achieve near ideal current and voltage operational characteristics over a predetermined frequency range using a time domain simulation.

US Patent:

7532163, May 12, 2009

Filed:

Feb 13, 2007

Appl. No.:

11/705213

Inventors:

Ike Y. Chang - Santa Monica CA, US
Richard W. Nichols - Manhattan Beach CA, US
Clifton Quan - Arcadia CA, US
Jonathan D. Gordon - Hermosa Beach CA, US
Irwin L. Newberg - Pacific Palisades CA, US

Assignee:

Raytheon Company - Waltham MA

International Classification:

H01Q 1/38

US Classification:

343700MS, 343718, 343767

Abstract:

A phased array antenna adapted to be mounted in a helmet. In the illustrative embodiment, the antenna comprises a substrate and an array of radiating elements disposed on said substrate, each of the elements including a-resonant cavity and a mechanism for feeding the cavity with an electromagnetic signal. , The cavity is formed in a multi-layer structure between a ground plane and a layer of metallization. A radiating slot or slots are provided in the layer of metallization. A first layer of dielectric material is disposed within the cavity. The feed mechanism is a microstrip feed disposed in the first layer of dielectric material parallel to a plane of a portion of the substrate over which an associated element is disposed. A layer of foam is disposed between the layer of dielectric material and the ground plane. Second and third parallel layers of dielectric material are included in each element.

US Patent:

20140005416, Jan 2, 2014

Filed:

Jun 27, 2013

Appl. No.:

13/929425

Inventors:

Kei Murakami - Kyoto, JP
Scott C. Virgil - Pasadena CA, US
Brian M. Stoltz - San Marino CA, US
Jonathan R. Gordon - Beverly Hills CA, US

International Classification:

C07D 493/16
C07D 493/08

US Classification:

549268, 549281

Abstract:

Compounds represented by Formula I are provided that include synthetic transtaganolide and basiliolide products. Derivatives of these compounds and methods of synthesis are also provided.