Chi Huei Wang

US Patent:

6458478, Oct 1, 2002

Filed:

Sep 8, 2000

Appl. No.:

09/657387

Inventors:

Chi S. Wang - Woodridge IL 60517
J. Daniel Lyons - Wheaton IL

Assignee:

Chi S. Wang - Woodridge IL

International Classification:

H01M 804

US Classification:

429 17, 429 13, 429 22

Abstract:

An integrated process and system for producing electricity for stationary purposes or for electric-powered vehicle using any of multiple hydrocarbon input fuels, a fuel cell, and a thermoelectric reformer that allows quick response to transient loads. Optional high-temperature and low-temperature water-gas shift reactors are used to convert carbon monoxide to carbon dioxide in the reformate stream; a hydrogen separator is used to remove carbon dioxide, carbon monoxide, and trace hydrocarbons; and a condenser is used to remove moisture from the reformate stream. Hydrogen gas not consumed in the fuel cell is stored or recycled for subsequent input to the fuel cell. H O produced in the fuel cell is recycled for use in the reformer and water-gas shift reactors and is heated with waste heat from the fuel cell and carbon dioxide, carbon monoxide, and hydrocarbons from the hydrogen separator. A mixer is used to vaporize the input fuel prior to entering the thermoelectric reformer. Some of the electricity produced in the fuel cell is used for powering the thermoelectric reformer and is also stored for subsequent startup and peak load purposes.

US Patent:

6600394, Jul 29, 2003

Filed:

Jun 6, 2000

Appl. No.:

09/587805

Inventors:

Chi Wang - Middletown NJ
Gregory J. Lamont - Jackson NJ
William D. Blair - Lanoka Harbor NJ
William H. Holland - Pennington NJ

Assignee:

Radio Frequency Systems, Inc. - Meriden CT

International Classification:

H01P 700

US Classification:

333235, 333231

Abstract:

A tunable, temperature compensated, thermal and mechanical stable, dielectric loaded cavity resonator and filter assembly has high unloaded Q, wide frequency tuning range and simple structure suitable for high volume production. The cavity resonator consists of a conductive housing, a substantially cylindrical ring shape dielectric body with a low loss, low thermal expansion coefficient support, a tuning mechanism and a plastic support at the opposite side of the main cylindrical dielectric body, which holds the main cylindrical dielectric body in place. The tuning mechanism further includes a substantially cylindrical dielectric tuning element positioned in or near the hole of the main cylindrical dielectric body and a self-locked or equivalent nut locked rotor with a support using the same material as that of the main cylindrical body support. The rotor is accessible and rotational movable from the outside of the conductive enclosure, resulting in linear motion of the dielectric tuning element with respect to the main dielectric body. Therefore the resonant frequency of the resonator can be substantially adjusted.

US Patent:

6624722, Sep 23, 2003

Filed:

Sep 12, 2001

Appl. No.:

09/949660

Inventors:

Chi Wang - Middletown NJ
William D. Wilber - Neptune NJ

Assignee:

Radio Frequency Systems, Inc. - Meriden CT

International Classification:

H01P 518

US Classification:

333116, 333117, 333111

Abstract:

A microwave coupler has a planar form with a transmission line segment oriented at an angle relative to a main transmission line. The planar form of the transmission line, such as in a printed circuit board, helps reduce the size and manufacturing costs for the coupler. When placed a prescribed distance from the main transmission line and oriented at an appropriate angle, the directivity and coupling factor requirements can be met precisely with minimal tuning. Where fine tuning is required, a tuning screw and resistor disposed adjacent to the transmission line segment are provided.

US Patent:

6624723, Sep 23, 2003

Filed:

Jul 10, 2001

Appl. No.:

09/901059

Inventors:

Chi Wang - Middletown NJ

Assignee:

Radio Frequency Systems, Inc. - Meriden CT

International Classification:

H01P 1213

US Classification:

333134, 333203, 333230

Abstract:

A multi-channel multiplexer has a substantially square shape and includes an NÃN matrix with a common resonator. A plurality of input/output ports are connected to a common input/output port via respective resonators of the NÃN matrix and the common resonator. The multiplexer provides a compact size, with balanced insertion losses and simple configuration to minimize phase difference of inter-resonator transitions.

US Patent:

6806791, Oct 19, 2004

Filed:

Feb 29, 2000

Appl. No.:

09/514879

Inventors:

Chi Wang - Middletown NJ
William Deppen Blair - Lanoka Harbor NJ

Assignee:

Radio Frequency Systems, Inc. - Marlboro NJ

International Classification:

H01P 120

US Classification:

333134, 333202, 333206, 333230

Abstract:

The invention is related to the field of tunable multiplexers. It consists of a tunable microwave multiplexer comprising a plurality of channel filters coupled to a combining/dividing mechanism. The plurality of channel filters can be either dielectric loaded resonators or combline resonators, while the combining/dividing mechanism can be a common resonator. In one embodiment, the common resonator is a multiple half-wavelength coaxial resonator.

US Patent:

7042314, May 9, 2006

Filed:

Oct 23, 2002

Appl. No.:

10/277971

Inventors:

Chi Wang - Holmdel NJ, US
Weili Wang - Old Bridge NJ, US
William D. Wilber - Jackson NJ, US
William D. Blair - Freehold NJ, US

Assignee:

Radio Frequency Systems - Meriden CT

International Classification:

H01P 1/20
H01P 1/208
H01P 7/10

US Classification:

333202, 3332191, 333209

Abstract:

A delay filter uses the dielectric mono-block triple-mode resonator and unique inter-resonator coupling structure, having smaller volume and higher power handling capacity. The triple-mode mono-block resonator has three resonators in one block. An input/output probe is connected to each metal plated dielectric block to transmit microwave signals. Corner cuts couple a mode oriented in one direction to a mode oriented in a second, mutually orthogonal direction. An aperture between two blocks couples all six resonant modes, and generates two inductive couplings by magnetic fields between two modes, and one capacitive coupling by electric fields. The input/output probes, coupling corner cuts and aperture are aligned such that all six resonators are coupled in the desired value and sign, so constant delay on the transmitted signal within certain bandwidth can be achieved. By connecting the input and output probes to the base printed circuit board, the delay filter is surface mountable.

US Patent:

7070634, Jul 4, 2006

Filed:

Nov 3, 2003

Appl. No.:

10/699857

Inventors:

Chi S. Wang - Woodridge IL, US

International Classification:

B01J 7/00

US Classification:

48 61, 48 65, 48 89, 48 62 R, 48197 R, 481279, 481986, 42218604, 422168, 422186, 422173, 422174, 422175, 422198, 422199, 422187, 422224, 422240, 422241

Abstract:

A plasma reformer for the chemical reforming of gaseous mixtures of water and hydrocarbon fuels for producing hydrogen. The reformer contains a reaction chamber with outer lateral walls containing emitter electrodes and inner lateral walls containing collector electrodes. The emitter electrodes and collector electrodes form an electric circuit. There are a multiplicity of thin needle-like extrusions on the emitter electrode from which a profusion of high energy electrons are emitted. These high-energy electrons dissociate the hydrocarbon fuel through absorption and ionization emitting low energy electrons in the process. These low energy electrons cause dissociation of water. Thus, dissociation of hydrocarbon fuel acts to initiate dissociation of water. The molar ratio of water to hydrocarbon fuel in the input mixture for reactions, and therefor the production of hydrogen from water, increases with carbon number of the hydrocarbon fuel.

US Patent:

7442364, Oct 28, 2008

Filed:

Nov 16, 2005

Appl. No.:

11/280384

Inventors:

Chi S. Wang - Woodridge IL, US

International Classification:

C01B 3/24

US Classification:

423650, 423652

Abstract:

A process for producing hydrogen for direct use as a fuel or for input to a fuel cell from dissociating HO in a plasma reformer with hydrocarbon fuel acting as an initiator. The molar ratio of water to hydrocarbon fuel in the input mixture for reactions, and therefore the production of hydrogen from water, increases with the carbon number of the hydrocarbon fuel. Steps in the process include: mixing and vaporizing an HO and hydrocarbon fuel mixture in an atomization/evaporation chamber, further heating the mixture in a rotating-flow buffer chamber, dissociating HO and hydrocarbon fuel in a plasma reformer, converting carbon monoxide and HO to hydrogen and carbon dioxide in a water shift reactor and optionally conditioning the reformate stream by removing carbon dioxide and by purifying hydrogen.