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Larry W Epp

from Pasadena, CA
Age ~63
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Also known as:
Larry Waldeen Epp, Lawrence Epp, Laurence Epp
Phone and address:
137 Oak Knoll Ave, Pasadena, CA 91101
Related to:
Eileen L GarciaAdam Marquez, 42Michael Garcia, 57Jeffrey Epp, 53
Connected to:
Brock E Epp, 40Elaine Epp, 92Eric M Epp, 58Jennie E Epp, 37Jessica A Epp, 45Judy G Epp, 72Julie Epp, 45Kelly E Epp, 44Lauren M Epp, 33Lindsey R Epp, 43

Larry Epp Phones & Addresses

  • 137 Oak Knoll Ave, Pasadena, CA 91101
  • Beverly Hills, CA
  • Crystal Lake, IL
  • 1830 Thornwood Ln, Mount Prospect, IL 60056
  • Sherman Oaks, CA
  • Los Angeles, CA
  • 137 N Oak Knoll Ave UNIT 16, Pasadena, CA 91101

Publications

Us Patents

Rectenna For High-Voltage Applications

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US Patent:
6369759, Apr 9, 2002
Filed:
Jun 8, 2000
Appl. No.:
09/591184
Inventors:
Larry W. Epp - Pasadena CA
Abdur R. Khan - Pasadena CA
Assignee:
California Institute of Technology - Pasadena CA
International Classification:
H01Q 138
US Classification:
343700MS, 343824
Abstract:
An energy transfer system is disclosed. The system includes patch elements, shielding layers, and energy rectifying circuits. The patch elements receive and couple radio frequency energy. The shielding layer includes at least one opening that allows radio frequency energy to pass through. The openings are formed and positioned to receive the radio frequency energy and to minimize any re-radiating back toward the source of energy. The energy rectifying circuit includes a circuit for rectifying the radio frequency energy into dc energy. A plurality of energy rectifying circuits is arranged in an array to provide a sum of dc energy generated by the energy rectifying circuit.

Carbon Nanotube Array Rf Filter

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US Patent:
6737939, May 18, 2004
Filed:
Apr 1, 2002
Appl. No.:
10/113250
Inventors:
Daniel J. Hoppe - La Ca{overscore (n)}ada CA
Brian D. Hunt - La Cresenta CA
Flavio Noca - Altadena CA
Jingming Xu - Providence RI
Larry Epp - Pasadena CA
Michael E. Hoenk - Valencia CA
Assignee:
California Institute of Technology - Pasadena CA
Brown University Research Foundation - Providence RI
International Classification:
H03H 900
US Classification:
333186, 333197, 333133, 310309, 205768, 4234473
Abstract:
A tunable nanomechanical resonator system comprising an array of nanofeatures, such as nanotubes, where the nanofeatures are in signal communication with means for inducing a difference in charge density in the nanofeature such that the mechanical resonant frequency of the nanofeature can be tuned, and where the nanofeature is in signal communication with a waveguide or other RF bias conduit such that an RF signal having a frequency corresponding to the mechanical resonant frequency of the array will couple to the array thereby inducing resonant motion in the array of nanofeatures, and subsequently coupling to an output waveguide, forming a nanoscale RF filter is provided. A method of producing a nanoscale RF filter structure controllably positioned and oriented with a waveguide and integrated electrodes is also provided.

Pattern-Aligned Carbon Nanotube Growth And Tunable Resonator Apparatus

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US Patent:
6803840, Oct 12, 2004
Filed:
Apr 1, 2002
Appl. No.:
10/113247
Inventors:
Brian D. Hunt - La Cresenta CA
Flavio Noca - Altadena CA
Michael E. Hoenk - Valencia CA
Larry Epp - Pasadena CA
Daniel J. Hoppe - La Ca{overscore (n)}ada CA
Robert S. Kowalcyk - Santa Clarita CA
Daniel S. Choi - Los Angeles CA
Assignee:
California Institute of Technology - Pasadena CA
International Classification:
H03H 924
US Classification:
333186, 333197, 4234473, 310 36, 310 37, 205766, 205768
Abstract:
A tunable nanomechanical oscillator device and system is provided. The nanomechanical oscillator device comprising at least one nanoresonator, such as a suspended nanotube, designed such that injecting charge density into the tube (e. g. by applying a capacitively-cuopled voltage bias) changes the resonant frequency of the nanotube, and where exposing the resonator to an RF bias induces oscillitory movement in the suspended portion of the nanotube, forming a nanoscale resonator, as well as a force sensor when operated in an inverse mode. A method of producing an oriented nanoscale resonator structure with integrated electrodes is also provided.

Wideband Radial Power Combiner/Divider Fed By A Mode Transducer

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US Patent:
7385462, Jun 10, 2008
Filed:
Mar 14, 2006
Appl. No.:
11/376638
Inventors:
Larry W. Epp - Pasadena CA, US
Daniel J. Hoppe - La Canada CA, US
Daniel Kelley - Hinkley CA, US
Abdur R. Khan - La Crescenta CA, US
Assignee:
The United States of America as represented by the Administrator of the National Aeronautics and Space Administration - Washington DC
International Classification:
H03H 7/38
H01P 5/12
US Classification:
333125, 333 26, 333 33, 333136
Abstract:
A radial power combiner/divider capable of a higher order (for example, N=24) of power combining/dividing and a 15% bandwidth (31 to 36 GHz). The radial power combiner/divider generally comprises an axially-oriented mode transducer coupled to a radial base. The mode transducer transduces circular TE01 waveguide into rectangular TE10 waveguide, and the unique radial base combines/divides a plurality of peripheral rectangular waveguide ports into a single circular TE01 waveguide end of the transducer. The radial base incorporates full-height waveguides that are stepped down to reduced-height waveguides to form a stepped-impedance configuration, thereby reducing the height of the waveguides inside the base and increasing the order N of combining/dividing. The reduced-height waveguides in the base converge radially to a matching post at the bottom center of the radial base which matches the reduced height rectangular waveguides into the circular waveguide that feeds the mode transducer.

Carbon Nanotube Switches For Memory, Rf Communications And Sensing Applications, And Methods Of Making The Same

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US Patent:
7446044, Nov 4, 2008
Filed:
Sep 19, 2006
Appl. No.:
11/523273
Inventors:
Anupama B. Kaul - Arcadia CA, US
Eric W. Wong - Los Angeles CA, US
Richard L. Baron - Verdugo City CA, US
Larry Epp - Pasadena CA, US
Assignee:
California Institute of Technology - Pasadena CA
International Classification:
B81B 7/02
H01L 21/44
US Classification:
438684, 438685, 438903, 438FOR 248, 257382, 257383, 977876, 977938, 333193
Abstract:
Switches having an in situ grown carbon nanotube as an element thereof, and methods of fabricating such switches. A carbon nanotube is grown in situ in mechanical connection with a conductive substrate, such as a heavily doped silicon wafer or an SOI wafer. The carbon nanotube is electrically connected at one location to a terminal. At another location of the carbon nanotube there is situated a pull electrode that can be used to elecrostatically displace the carbon nanotube so that it selectively makes contact with either the pull electrode or with a contact electrode. Connection to the pull electrode is sufficient to operate the device as a simple switch, while connection to a contact electrode is useful to operate the device in a manner analogous to a relay. In various embodiments, the devices disclosed are useful as at least switches for various signals, multi-state memory, computational devices, and multiplexers.

Applications And Methods Of Operating A Three-Dimensional Nano-Electro-Mechanical Resonator And Related Devices

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US Patent:
8435798, May 7, 2013
Filed:
Jan 12, 2011
Appl. No.:
13/005511
Inventors:
Anupama B. Kaul - Arcadia CA, US
Larry W. Epp - Pasadena CA, US
Leif Bagge - Austin TX, US
Assignee:
California Institute of Technology - Pasadena CA
International Classification:
G01N 25/18
US Classification:
436149, 333186, 333197, 333133
Abstract:
Carbon nanofiber resonator devices, methods for use, and applications of said devices are disclosed. Carbon nanofiber resonator devices can be utilized in or as high Q resonators. Resonant frequency of these devices is a function of configuration of various conducting components within these devices. Such devices can find use, for example, in filtering and chemical detection.

Dual Polarized, Heat Spreading Rectenna

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US Patent:
59073055, May 25, 1999
Filed:
Nov 24, 1997
Appl. No.:
8/977004
Inventors:
Larry W. Epp - Pasadena CA
Abdur R. Khan - Sierra Madre CA
R. Peter Smith - La Crescenta CA
Hugh K. Smith - Pasadena CA
Assignee:
California Institute of Technology - Pasadena CA
International Classification:
H01Q 138
US Classification:
343700MS
Abstract:
An aperture coupled patch splits energy from two different polarization components to different locations to spread heat. In addition, there is no physical electrical connection between the slot, patch and circuitry. The circuitry is located under a ground plane which shields against harmonic radiation back to the RF source.
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Larry W Epp from Pasadena, CA, age ~63 Get Report