Robert A Amantea

US Patent:

6359795, Mar 19, 2002

Filed:

Feb 10, 2000

Appl. No.:

09/501941

Inventors:

Robert Amantea - Manalapan NJ
Timothy Allen Pletcher - Eastampton NJ
Jae-Hong Joo - Kyunggi-Do, KR
Min-Sung Yang - Seoul, KR

Assignee:

Sarnoff Corporation - Princeton NJ
Daewoo Electronics Co. Ltd. - Seoul

International Classification:

H02M 3335

US Classification:

363 2101, 363 2116, 363 97

Abstract:

A converter utilizing a multifilar transformer having its primary and auxiliary windings made simultaneously, a technique known as bifilar winding, provides high efficiency and low noise. The multifilar winding technique yields minimum leakage inductance between the windings and reduces the proximity effect to a minimum achievable using most well-known wires. The converter utilizes an improved soft-switcher topology which advantageously reduces the interwinding capacitance between the primary and auxiliary windings of the transformer. The topology includes a resonant LC circuit interposed in series with one leg of the auxiliary winding and the auxiliary switch. The other leg of the auxiliary winding is at ground. A controller is provided to control switch timing such that the converter optimizes switch loss and resonant pulse loss.

US Patent:

6441590, Aug 27, 2002

Filed:

Feb 29, 2000

Appl. No.:

09/515304

Inventors:

Robert Amantea - Manalapan NJ
Timothy Allen Pletcher - Eastampton NJ
Jae-Hong Joo - Kyunngi-Do, KR
Min-Sung Yang - Seoul, KR

Assignee:

Sarnoff Corporation - Princeton NJ
Daewoo Electronics Co., Ltd. - Seoul

International Classification:

G05F 140

US Classification:

323266, 323267, 315411, 307 75, 307 30, 345212, 713324

Abstract:

A power supply according to the principles of the inventions comprises two stages. The first stage is a power factor corrector stage. This stage provides the required line regulation, including greater than 95% power factor correction, and provides a range of outputs from approximately 5 volts to 200 volts with good load regulation at low voltages. The second stage is a soft switching power supply having good load regulation from approximately 40 to approximately 175 volts. An intermediate high voltage of the first stage supplies the input to the second stage, thereby achieving extremely good line regulation and low regulation.

US Patent:

6658176, Dec 2, 2003

Filed:

Aug 13, 2001

Appl. No.:

09/928757

Inventors:

Robert Amantea - Manalapan NJ

Assignee:

Sarnoff Corporation - Princeton NJ

International Classification:

G02B 626

US Classification:

385 16, 385 15, 385 25, 385 27, 385 30, 385 31, 385 42, 385 32, 385 14, 385 48

Abstract:

A micromechanical optical switch structure, that may be integrated to form an array of optical switches, switches light between a main waveguide and a switched waveguide. The switched waveguide has a coupling portion and two flexible portions and is coupled to a movable cantilever arm. The cantilever arm is configured to move at least the coupling portion of the switched waveguide between first and second positions with respect to the main waveguide. In the first position, the switched waveguide is evanescently coupled to the main waveguide and in the second position, the switched waveguide is not evanescently coupled to the main waveguide. The movable cantilever arm may be formed with bimaterial arms that move the switched waveguide in response to heat or a piezoelectric potential being applied to the arm or they may be formed with an electrostatic plate that moves the arms in response to an electrostatic potential.

US Patent:

6665476, Dec 16, 2003

Filed:

Aug 2, 2001

Appl. No.:

09/920795

Inventors:

Alan Michael Braun - New Brunswick NJ
Joseph Hy Abeles - East Brunswick NJ
Robert Amantea - Manalapan NJ

Assignee:

Sarnoff Corporation - Princeton NJ

International Classification:

G02B 626

US Classification:

385 50, 385 14, 385 24, 385 27, 398 82, 398 42, 398 45, 398 48

Abstract:

One embodiment of the present invention is an exemplary wavelength selective optical coupling device. This exemplary device includes two waveguides, a ring or disc resonator, and resonator coupling elements. The waveguides are disposed on top of a substrate, not in contact with each other. The waveguides may transmit multiple wavelengths of light. The ring or disc resonator includes a dielectric member which extends parallel to the top of the substrate and overlaps, without contacting, the waveguides. The resonator is sized to resonate at a subset of resonant wavelengths. The resonator coupling elements couple the resonator to the substrate. The resonator coupling elements may include a bridge coupled to the top surface of the substrate and electrically coupled to control circuitry within the substrate. A waveguide coupling signal from the control circuitry causes the bridge to deform, translating the resonator up and down, thereby intermittently coupling and decoupling the waveguides.

US Patent:

6924887, Aug 2, 2005

Filed:

Dec 1, 2003

Appl. No.:

10/725343

Inventors:

Taner Dosluoglu - New York NY, US
Robert Amantea - Manalapan NJ, US
Peter Alan Levine - West Windsor NJ, US
Robin Mark Adrian Dawson - Princeton NJ, US

Assignee:

Sarnoff Corporation - Princeton NJ

International Classification:

G01C003/08
G01F008/00

US Classification:

356 501, 356 401, 356 407, 356 508

Abstract:

A method and apparatus for generating charge from a light pulse. In one example, a light sensor includes an active region for generating an electric charge in response to a light pulse. A drift region is formed within a substrate and receives the electric charge from the light sensor. A spatial charge distribution is produced within the drift region in response to an electric field. The drift region includes an outer edge and an inner edge. The volume of the drift region decreases from the outer edge to the inner edge.

US Patent:

7622998, Nov 24, 2009

Filed:

Nov 22, 2006

Appl. No.:

11/562455

Inventors:

Robert Amantea - Manalapan NJ, US

Assignee:

Sarnoff Corporation - Princeton NJ

International Classification:

H03B 7/14
G01J 3/00

US Classification:

331 56, 356300

Abstract:

The present invention provides a solid state intra-cavity absorption spectrometer comprising a solid-state gain device interspersed in an array of oscillators in a chamber to produce a wide area coherent high power source of Terahertz radiation. The source is then partitioned into two separate regions, one having a gain medium and one having a sample chamber that can be held a different pressure and is chemically isolated from the gain region thereby forming an intra-cavity absorption spectrometer.

US Patent:

20060274918, Dec 7, 2006

Filed:

Feb 28, 2006

Appl. No.:

11/364300

Inventors:

Robert Amantea - Manalapan NJ, US
James Bergen - Hopewell NJ, US
Dominick LoIacono - Yardville NJ, US
James Matey - Princeton NJ, US
Oleg Naroditsky - Princeton NJ, US
Michael Tinker - Yardley PA, US
Thomas Zappia - Plainsboro NJ, US

International Classification:

G06K 9/00

US Classification:

382117000

Abstract:

A method and apparatus for designing an iris biometrics system that operates in minimally constrained settings. The image acquisition system has fewer constraints on subjects than traditional methods by extending standoff distance and capture volume. The method receives design parameters and provides derived quantities that are useful in designing an image acquisition system having a specific set of performance requirements. Exemplary scenarios of minimally constrained settings are provided, such as a high volume security checkpoint, an office, an aircraft boarding bridge, a wide corridor, and an automobile.

US Patent:

20120119183, May 17, 2012

Filed:

Aug 1, 2007

Appl. No.:

11/832435

Inventors:

Boris G. Kharas - Brooklyn NY, US
Robert Amantea - Manalapan NJ, US
Pradyumna Kumar Swain - Princeton NJ, US

International Classification:

H01L 29/06
H01L 21/20

US Classification:

257 10, 438 20, 257E2109, 257E29005

Abstract:

The present invention provides for a fabrication of an integrated THz source. The fabrication includes integrating a field emitter array (FEA) with a grating by utilizing micro-electromechanical system (MEMS) and grating fabrication methods to build the FEA device upon a moveable surface that can be rotated perpendicular to the other, and locked into alignment or alternately finely adjusted.