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Filip L Iliev

from San Francisco, CA
Age ~35
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Also known as:
Iliev Filip, Kathryn Lawler
Related to:
Lucky IlievMetodi L Iliev, 43Latchezar M Iliev, 69Penka K Ilieva, 65
Connected to:
George I Iliev, 34Ivaylo T Iliev, 45Plamen T Iliev, 53Sasha L Iliev, 35Svetlozar T Iliev, 72Valentin D Iliev, 81Petar Ilievski, 83Beth A Iliff, 74Dan Iliff, 39Jack Iliff, 60

Filip Iliev Phones & Addresses

  • San Francisco, CA
  • Oakland, CA
  • Tujunga, CA
  • Palmdale, CA

Resumes

Resumes

Filip Iliev Photo 1

Member Of Technical Staff

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Location:
San Francisco, CA
Industry:
Electrical/Electronic Manufacturing
Work:
Los Alamos National Laboratory Jul 2015 - Sep 2015
Graduate Research Assistant
Resonant Inc. Jul 2015 - Sep 2015
Member of Technical Staff
Pedrotti Research Group Jan 2015 - Jun 2015
Graduate Researcher
Maxus Instrument Jun 2012 - Dec 2014
Junior Design Engineer
Ucla Ozcan Reasearch Group Jun 2009 - Apr 2010
Undergraduate Assistant
Education:
University of California, Santa Cruz 2013 - 2015
Masters, Electrical Engineering University of California, Los Angeles 2007 - 2012
Bachelors, Electronics Engineering, Electronics
Skills:
Electrical Engineering
Electronics
Analog and Mixed Signal Circuit
Pcb Design
Pspice
Analog Feedback Circuit Design
Power Electronics Design
Low Power Circuit Design
High Current/ Voltage Experience
Cadence Virtuoso
Orcad
Eaglecad
Digital Ic Circuit Design
Testing and Documetation
Manufacturing
Signal Processing Algorithms
Scientific Algorithms
Scientific Research
Open Source
Matlab
C++
Simulations
Git
Julia
Javascript
Jquery
Java
Html
Css
Gnu Octave
Autocad
Machine Learning
Languages:
English
Bulgarian
Certifications:
Machine Learning
Coursera Course Certificates, License 9Ddcb36Kfntv
License 9Ddcb36Kfntv
Filip Iliev Photo 2

Filip Iliev

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Publications

Us Patents

Transversely-Excited Film Bulk Acoustic Resonators With Narrow Gaps Between Busbars And Ends Of Interdigital Transducer Fingers

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US Patent:
20220263494, Aug 18, 2022
Filed:
Aug 3, 2021
Appl. No.:
17/393111
Inventors:
- Austin TX, US
Filip ILiev - San Francisco CA, US
International Classification:
H03H 9/54
H03H 9/02
H03H 9/205
H03H 3/02
Abstract:
An acoustic resonator has a piezoelectric plate attached to the surface of the substrate except for a portion of the piezoelectric plate forming a diaphragm spanning a cavity in the substrate. An interdigital transducer (IDT) formed on the plate has interleaved fingers on the diaphragm with first parallel fingers extending from a first busbar and second parallel fingers extending from a second busbar of the IDT. A distance between the interleaved fingers defines an IDT pitch. The IDT has a gap distance between the ends of the first plurality of parallel fingers and the second busbar, and between the ends of the second plurality of parallel fingers and the first busbar; and the gap distance is less than ⅔ times the IDT pitch.

Transversely-Excited Film Bulk Acoustic Resonators With Improved Coupling And Reduced Energy Leakage

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US Patent:
20220231657, Jul 21, 2022
Filed:
Nov 22, 2021
Appl. No.:
17/533081
Inventors:
- Austin TX, US
Filip Iliev - San Francisco CA, US
International Classification:
H03H 9/02
H03H 3/02
H03H 9/205
H03H 9/56
Abstract:
Acoustic resonators, acoustic filter devices and methods of making the same. An acoustic resonator device includes a piezoelectric plate having front and back surfaces, an interdigital transducer (IDT) on the front surface including interleaved fingers extending alternately from opposed first and second busbars, an overlapping distance of the interleaved fingers defining an aperture of the acoustic resonator device, and a dielectric layer formed over and between the interleaved fingers, wherein the dielectric layer extends from between an edge of the aperture and the first busbar to between the an opposite edge of the aperture and the second busbar.

Transversely-Excited Film Bulk Acoustic Resonators With Narrow Gaps Between Busbars And Ends Of Interdigital Transducer Fingers

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US Patent:
20230022403, Jan 26, 2023
Filed:
Oct 6, 2022
Appl. No.:
17/961231
Inventors:
- Austin TX, US
Filip ILIEV - San Francisco CA, US
International Classification:
H03H 9/54
H03H 9/02
H03H 3/02
H03H 9/205
Abstract:
An acoustic resonator has a piezoelectric plate attached to the surface of the substrate except for a portion of the piezoelectric plate forming a diaphragm spanning a cavity in the substrate. An interdigital transducer (IDT) formed on the plate has interleaved fingers on the diaphragm with first parallel fingers extending from a first busbar and second parallel fingers extending from a second busbar of the IDT. An average center-to-center distance between adjacent interleaved fingers defines an IDT pitch. The IDT has a gap distance between the ends of the first plurality of parallel fingers and the second busbar, and between the ends of the second plurality of parallel fingers and the first busbar; and the gap distance is less than ⅔ times the IDT pitch.

Source Identification By Non-Negative Matrix Factorization Combined With Semi-Supervised Clustering

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US Patent:
20210004724, Jan 7, 2021
Filed:
Sep 14, 2020
Appl. No.:
17/020504
Inventors:
- Los Alamos NM, US
Ludmil B. Alexandrov - Santa Fe NM, US
Filip L. Iliev - Oakland CA, US
Valentin G. Stanev - Crofton MD, US
Velimir V. Vesselinov - Santa Fe NM, US
Assignee:
Triad National Security, LLC - Los Alamos NM
International Classification:
G06N 20/00
G06F 17/16
G06K 9/62
Abstract:
Machine-learning methods and apparatus are provided to solve blind source separation problems with an unknown number of sources and having a signal propagation model with features such as wave-like propagation, medium-dependent velocity, attenuation, diffusion, and/or advection, between sources and sensors. In exemplary embodiments, multiple trials of non-negative matrix factorization are performed for a fixed number of sources, with selection criteria applied to determine successful trials. A semi-supervised clustering procedure is applied to trial results, and the clustering results are evaluated for robustness using measures for reconstruction quality and cluster separation. The number of sources is determined by comparing these measures for different trial numbers of sources. Source locations and parameters of the signal propagation model can also be determined. Disclosed methods are applicable to a wide range of spatial problems including chemical dispersal, pressure transients, and electromagnetic signals, and also to non-spatial problems such as cancer mutation.

Temperature Compensated Acoustic Wave Devices

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US Patent:
20190068159, Feb 28, 2019
Filed:
Aug 23, 2018
Appl. No.:
16/110980
Inventors:
- Santa Barbara CA, US
Patrick Turner - San Bruno CA, US
Ventsislav Yantchev - Sofia, BG
Filip Iliev - Oakland CA, US
International Classification:
H03H 9/64
H03H 9/02
H03H 9/145
H03H 9/25
H03H 3/10
Abstract:
Surface acoustic wave (SAW) resonator, SAW filters, and methods of fabricating SAW filters. A first plurality of parallel conductors extending from a first bus bar are formed on a surface of a 128-degree Y-cut lithium niobate substrate. A second plurality of parallel conductors extending from a second bus bar are formed on the surface of the substrate, the second plurality of parallel conductors interleaved with the first plurality of parallel conductors. An SiO2 layer overlays the first and second pluralities of parallel conductors. The first and second pluralities of parallel conductors are substantially copper and have a thickness Ddefined by 0.12 P≤D≤0.24P, where P is a center-to-center spacing of adjacent parallel conductors. The SiO2 layer has a thickness Ddefined by 3.1D≤D≤4.5D.

Source Identification By Non-Negative Matrix Factorization Combined With Semi-Supervised Clustering

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US Patent:
20180060758, Mar 1, 2018
Filed:
Aug 29, 2017
Appl. No.:
15/690176
Inventors:
- Los Alamos NM, US
Ludmil B. Alexandrov - Santa Fe NM, US
Filip L. Iliev - Oakland CA, US
Valentin G. Stanev - Crofton MD, US
Velimir V. Vesselinov - Santa Fe NM, US
Assignee:
Los Alamos National Security, LLC - Los Alamos NM
International Classification:
G06N 99/00
Abstract:
Machine-learning methods and apparatus are provided to solve blind source separation problems with an unknown number of sources and having a signal propagation model with features such as wave-like propagation, medium-dependent velocity, attenuation, diffusion, and/or advection, between sources and sensors. In exemplary embodiments, multiple trials of non-negative matrix factorization are performed for a fixed number of sources, with selection criteria applied to determine successful trials. A semi-supervised clustering procedure is applied to trial results, and the clustering results are evaluated for robustness using measures for reconstruction quality and cluster separation. The number of sources is determined by comparing these measures for different trial numbers of sources. Source locations and parameters of the signal propagation model can also be determined. Disclosed methods are applicable to a wide range of spatial problems including chemical dispersal, pressure transients, and electromagnetic signals, and also to non-spatial problems such as cancer mutation.
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Filip L Iliev from San Francisco, CA, age ~35 Get Report