Ronald F Mathis

US Patent:

6447720, Sep 10, 2002

Filed:

Jul 31, 2000

Appl. No.:

09/630245

Inventors:

Kurt Anthony Garrett - Raleigh NC
Andrew P. Riser - Newbury OH
Ronald Floyd Mathis - Ramona CA
James Pierre Hauck - San Diego CA

Assignee:

Remotelight, Inc. - Raleigh NC

International Classification:

A61L 200

US Classification:

422 24, 25045011, 210748

Abstract:

An ultraviolet (UV) disinfection system and method for treating for treating fluids including a configuration and design to function effectively with at least one UV light source or lamp that is not submerged in the fluid. The UV light source is positioned outside the fluid to be disinfected via exposure to at least one UV dose zone outside the fluid being treated wherein UV light is projected into the at least one dose zone. The UV light source may be presented in a vertical riser configuration, wherein the UV light source is positioned above the fluid to be treated and projecting a UV dose zone downward toward and into the fluid to be treated, with the fluid moving upward toward the UV light source. Alternatively, the UV light source may be presented in a planar or horizontal design, wherein the UV light source is positioned above the fluid to be treated and projecting a WV dose zone downward toward and into the fluid to be treated, with the fluid moving in a direction substantially perpendicular to the UV dose zone. At least one interface plate is used to provide a surface zone for UV disinfection above the fluid and to provide additional treatment means for balancing pH, affecting effluent chemistry, and the like.

US Patent:

6980147, Dec 27, 2005

Filed:

Apr 7, 2004

Appl. No.:

10/820168

Inventors:

Ronald F. Mathis - Ramona CA, US
Stephen R. Mathis - Menifee CA, US
Paul N. Huntley - Poway CA, US
James A. Crawford - San Diego CA, US
Barry L. Dorr - Carlsbad CA, US
William L. Floyd - Temecula CA, US

Assignee:

Photon Products, Inc. - Murrieta CA

International Classification:

H03M001/12

US Classification:

341155, 341126

Abstract:

A waveform acquisition system that captures and digitizes a wideband electrical signal through a bank of front end filters, frequency down converters, and conventional digitizers (A/D converters). A software algorithm reconstructs the composite input signal and applies the necessary corrections to remove the effects of hardware impairments. This approach is possible because it uses a class of filters that exhibit the quality of perfect waveform reconstruction, allowing signals whose spectral components overlap multiple filter bands, to be faithfully reconstructed. A calibration generator switched into the input port serves as a reference for quantifying and removing hardware errors. The channelized analog-to-digital converter (ADC) effectively multiplies the bandwidth and sampling rate of the conventional digitizer performance in a single channel by the number of channels in the system.

US Patent:

7541959, Jun 2, 2009

Filed:

Mar 9, 2007

Appl. No.:

11/716532

Inventors:

Ronald F. Mathis - Murrieta CA, US
Stephen R. Mathis - Menifee CA, US
Paul N. Huntley - Poway CA, US

Assignee:

Photonics Products, Inc. - Murrieta CA

International Classification:

H03M 1/12

US Classification:

341155, 375245

Abstract:

A waveform acquisition system that captures and digitizes a wideband electrical signal through a bank of front end filters, frequency down converters, and conventional digitizers (A/D converters). A software algorithm reconstructs the composite input signal and applies the necessary corrections to remove the effects of hardware impairments. This approach is possible because it uses a class of filters that exhibit the quality of perfect waveform reconstruction, allowing signals whose spectral components overlap multiple filter bands, to be faithfully reconstructed. A calibration generator switched into the input port serves as a reference for quantifying and removing hardware errors. The channelized analog-to-digital converter (ADC) effectively multiplies the bandwidth and sampling rate of the conventional digitizer performance in a single channel by the number of channels in the system. The use of digital local oscillators enable a compact, low power, monolithic architecture.

US Patent:

7652608, Jan 26, 2010

Filed:

Dec 9, 2005

Appl. No.:

11/298035

Inventors:

Ronald F. Mathis - Ramona CA, US
Stephen R. Mathis - Menifee CA, US
Paul N. Huntley - Poway CA, US
James A. Crawford - San Diego CA, US
Barry L. Dorr - Carlsbad CA, US
William L. Floyd - Temecula CA, US

Assignee:

Photonics Products, Inc. - Murrieta CA

International Classification:

H03M 1/12

US Classification:

341155, 341110, 341126, 455307, 455337, 375254, 375364

Abstract:

A waveform acquisition system that captures and digitizes a wideband electrical signal through a bank of front end filters, frequency down converters, and conventional digitizers (A/D converters). A software algorithm reconstructs the composite input signal and applies the necessary corrections to remove the effects of hardware impairments. This approach is possible because it uses a class of filters that exhibit the quality of perfect waveform reconstruction, allowing signals whose spectral components overlap multiple filter bands, to be faithfully reconstructed. A calibration generator switched into the input port serves as a reference for quantifying and removing hardware errors. The channelized analog-to-digital converter (ADC) effectively multiplies the bandwidth and sampling rate of the conventional digitizer performance in a single channel by the number of channels in the system.

US Patent:

50112643, Apr 30, 1991

Filed:

Dec 28, 1989

Appl. No.:

7/458156

Inventors:

Eric M. Bradley - San Diego CA
Ronald F. Mathis - Ramona CA

Assignee:

General Dynamics Corp., Electronics Divn. - San Diego CA

International Classification:

G02B 2742
H01S 310

US Classification:

35016224

Abstract:

An optical modulator for generating an amplitude modulated optical signal. A signal generator generates an optical signal that is optically coupled to a tunable filter which shares a common optical axis with the signal generator. The tunable filter wavelength response varies in response to an electrical input control signal thereby providing an output amplitude modulated optical signal. An optical isolator is located between and shares a common optical axis with the signal generator and the tunable filter. The optical isolator is for preventing optical signals originating at the filter, traveling toward the signal generator, from impinging on the signal generator.

US Patent:

47266449, Feb 23, 1988

Filed:

Jul 8, 1985

Appl. No.:

6/752735

Inventors:

Ronald F. Mathis - San Diego CA

Assignee:

General Dynamics Electronics Division - San Diego CA

International Classification:

G02B 628
H04B 900
G02F 100

US Classification:

350 9616

Abstract:

A fiber optic data bus that includes a multiplexer means for generating a plurality of optical signals and for intensity modulating each of the optical signals in response to a respective one of a plurality of input RF signals each at a different RF carrier frequency to provide a plurality of intensity modulated optical signals. A signal collection means combines the plurality of intensity modulated optical signals into a combined optical signal. A conducting means conducts the combined optical signal to a signal distribution means which distributes the combined optical signal to each of a plurality of output ports. A demultiplexer means extracts from a portion of one of the distributed combined optical signals an output RF signal substantially identical to a predetermined one of the plurality of RF input signals.

US Patent:

49105396, Mar 20, 1990

Filed:

Dec 27, 1988

Appl. No.:

7/289733

Inventors:

Ronald F. Mathis - Ramona CA
Andrew P. Riser - Ramona CA

Assignee:

General Dynamics Corporation, Electronics Division - San Diego CA

International Classification:

G02B 626
G02B 642

US Classification:

350 9615

Abstract:

A fiber optic power coupling device such as a power summer, power divider or star coupler comprises a segment of multimode optical fiber having an input mirror at one end and an output mirror at the opposite end. One or more inputs at the input end of the fiber segment direct an equivalent number of input, intensity modulated light signals into the fiber and one or more outputs at the output end direct a corresponding number of output signals out of the fiber. Where there is one input and a plurality of outputs, the device acts as a power divider. Where there are a plurality of inputs and one output, the device acts as a power summer. Where there are a plurality of inputs and a plurality of outputs, the device acts as a star coupler.

US Patent:

46957901, Sep 22, 1987

Filed:

Jan 2, 1986

Appl. No.:

6/815630

Inventors:

Ronald F. Mathis - San Diego CA

Assignee:

General Dynamics Electronics Division - San Diego CA

International Classification:

G01R 2316

US Classification:

324 77K

Abstract:

A spectrum analyzer subsystem for analyzing the frequency content of an RF signal including an optical source means responsive to an RF signal for generating a plurality of intensity modulated optical signals and a filter means responsive to each one of the intensity modulated optical signals for providing a plurality of output optical signals each corresponding to a respective one of the intensity modulated optical signals. Each output optical signal corresponds in intensity to the frequency content of an RF signal within a different predetermined frequency bandwidth. Detector means, which is responsive to each output optical signal converts each output optical signal into a corresponding electrical signal.