TrueSpan, Long Beach, CA (2004 – 2006)

Member of the founding team. Contributed to the business plan and system architecture. Performed simulations and conducted design trades for DVB-T/H receiver.

GigaBeam Corporation, Herndon, VA (2004 – 2006)

Prepared analysis of atmospheric gas dispersion and rain attenuation in millimeter wave bands. Worked with founder to identify and protect key IP.

Wi-Fi Alliance, Austin TX (2004 – 2007)

Performed simulations of adaptive spectrum sharing rules.

Menache LLC, Culver City, CA (2003 – 2008)

Assumed the VP Engineering role for this venture startup developing a RF Tag motion capture system for the entertainment industry. Provide technical management of vendor implementing system.

IOSTAR Corporation, North Salt Lake, UT (2005 - 2006)

Prepared capacity analysis for W-band satellite system. Prepared overview of ITU coordination process for satellite systems.

Oplus Technologies, Israel (2004)

Prepared and presented a three day workshop covering analog TV audio.

Globalstar, Milpitas, CA (2004)

Supported design of amplifier module for multi-channel active antenna subscriber units.

GKM Ventures, Los Angeles, CA (2003)

Provided due diligence services.

inSilica, Santa Clara, CA (2003)

Provided due diligence services.

Microsoft Corporation, Redmond, WA (2002 – 2004)

Advisor on broadband wireless access, and on power line communications.

Wavestream Corporation, West Covina, CA (2001 – 2003)

Senior advisor to this millimeter/microwave high-power amplifier venture startup.

Kitcomm, Bermuda (1998 – 1999, 2002 – 2003)

Prepared several coordination strategy, regulatory assessment, and interference analysis memos in support of Kitcomm’s L-band NGSO satellite system’s business plan.

SkyVault Secure Digital Distribution, Carmel, CA (2001 – Present)

CTO for this digital rights management and secure content distribution startup. Developed a demo system showcasing SkyVault’s UltraSecure™ digital content protection.

Technovative Applications, Brea, CA (2002 – 2003)

Performed review of Trajectory Correctable Munitions transceiver. Prepared data link and transceiver specifications. Developed coherent and non-coherent demod architectures and detailed designs, including design trades and performance simulations.

Menache Inc., Beverly Hills, CA (2001 – 2003)

Performed trade studies and developed system design of a RF Tag motion capture system for the entertainment industry. Worked with potential vendors to obtain quotes.

ViaSat, Carlsbad, CA (2002)

Provided expert witness services in Government contract dispute.

Teledesic, Bellevue, WA (1990 – 2002)

Chief Consultant System Architecture. Member of the original Teledesic (Calling Communications) technical team. Developed the communications systems architecture for this low-Earth orbit (LEO) Ka-band satellite communications system including radio frequency plan, multiple access techniques, and link budgets. Prepared the technical sections of the Teledesic FCC application and amendments. Provided technical inputs for various domestic and international regulatory filings.

Member of the Teledesic management team. Contributed to the design of the Teledesic organization. Helped formulate Teledesic regulatory strategy. As Director, Communications Systems was responsible for all Teledesic communications systems design and analysis, and regulatory support engineering activities. Managed support contractors and consultants to refine the communications systems design and to prepare technical analysis of regulatory issues. Surveyed potential Teledesic suppliers. Recruited several key members of the Teledesic team.

ICO Global Communications., Uxbridge, UK (1999 – 2002)

Technical lead for the Eagle River due diligence leading to ICO’s emergence from bankruptcy. Worked closely with the ICO and Boeing Space Systems teams to identify and mitigate technical risks. Continued to provide technical and regulatory support following the restructuring. Managed the preparation of an independent assessment of the interference environment. Developed detailed payload simulations to access the impact of terrestrial interference on satellite performance. Prepared analysis in support of Ancillary Terrestrial Component (ATC) regulatory filings.

Mission Research Corporation, Torrance, CA (2002)

Supported development of broadband transmitter and receiver.

Malibu Networks, Calabasas, CA (1999 – 2001)

Coached founders during initial fund raising. Served as a member of Malibu’s advisory board.

Endwave, Sunnyvale, CA (1991 – 2001)

Prepared a white paper on free space optical (FSO) propagation and the impact of fog. Prepared a tutorial on radiation exposure hazard and regulations. Prepared a sensitivity analysis of rain availability versus link margin in the 28 GHz and 38 GHz bands. Prepared various analysis in support of regulatory filings.

Leo One USA, St. Louis, MO (1993 – 2001)

Developed the communications system architecture for this “Little-LEO” VHF/UHF store-and-forward satellite system including radio frequency plan, multiple access techniques, and link budgets. Designed satellite constellation orbits. Developed network protocols. Identified satellite and user terminal requirements.

Prepared technical sections of FCC application and amendments. Provided technical inputs for various domestic and international regulatory filings. Managed support contractors and consultants to develop constellation analysis software program, to analyze constellation performance, and to refine the communications systems design. Evaluated potential satellite vendors.

Sirius Satellite Radio, New York, NY (2000)

Member of tiger team formed to review contract performance of vendor developing receiver chipset.

Tachyon, San Diego, CA (2000)

Provided expert witness services.

Houlihan, Lokey, Howard, and Zukin, Los Angeles, CA (1999)

Technical advisor to Iridium bond holders during bankruptcy proceeding.

SiRF Technology, Los Angeles, CA (1995 – 1999)

Retained by Founder as Chief Technical Advisor to this venture startup. Provided technical and marketing support in GPS and spread spectrum communications. Supported the development of GPS and wireless chipsets.

PlatinumIP, Long Beach, CA (1998 – 1999)

Co-founder and CFO for this Communications Systems Intellectual Property (CSIP) venture startup. Served as a Member of the Board. Developed the business plan expanding on the Silicon IP model by including RF and software for a complete communications system solution. Worked with VC’s and potential foundry partners to obtain funding. The company was subsequently renamed WirelessHome, refocused on the broadband wireless access opportunity, and acquired by Western Multiplex.

Safe Zone Systems, NM (1999)

Prepared competitive assessment of object and personal detection devices including UWB technology and manufacturers of UWB equipment, and companies applying other traditional and innovative technologies in the weapons and object detection marketplace.

Garmin, Olathe, KS (1999)

Provided expert witness services.

Social Fabric Corporation, West Covina, CA (1996 – 1999)

Co-founder and chief engineer. Developed the communications system architecture for this 60-GHz broadband wireless local loop company. Devised regulatory strategy.

Angel Technology, St. Louis, MO (1995 – 1996)

Member of the founding technical team for this high-altitude platform system (HAPS) tall-tower startup. Developed communications systems architectures for broadband (LMDS) and narrowband (cellular & PCS) applications. Prepared technical inputs for regulatory filings.

dbX, St. Louis, MO (1993 – 1995)

Performed a feasibility study of wireless cable systems (LMDS, MVDS, and MMDS) using digital modulation techniques. Conducted due diligence investigations of several high technology companies.

Litton Aero Products, Moorpark, CA (1993 – 1994)

Conducted prior art searches in support of patent valuations.

Tecelmex, Mexico City, Mexico (1993 – 1994)

Provided regulatory and technical support for the Leo One store-and-forward LEO satellite system.

Navsys, Colorado Springs, CO (1989 – 1993)

Served as a member of the Board. Developed algorithms for skewed axis inertial navigation system (INS) fault detection and isolation (FDI). Performed a study of the long duration performance of aircraft inertial navigation systems.

Developed an ultra-low production cost GPS receiver module. Developed a post-test GPS software receiver program. Performed trade studies for a L-Band digitizing GPS receiver. Developed a miniaturized L-Band to S-Band GPS Translator and associated S-Band to L-Band receiver. Designed receiver-tracking loops for a very high dynamic (50 g, 50 g/sec) application. Performed a study analyzing direct sequence spread spectrum receiver implementation loss sources. Developed several miniaturized low-power S-Band, L-Band, and VHF frequency synthesizers. Developed a differential GPS navigation filter with autonomous fault detection. Conducted a study of the receiver autonomous integrity monitoring (RAIM) performance of an integrated GPS/GLONASS receiver.

Knight Protective, Van Nuys, CA (1992)

Performed a trade study comparing narrow band and spread spectrum wireless security systems.

JCA, Thousand Oaks, CA (1990 – 1991)

Prepared requirements flowdown for a K-band low noise amplifier/downconverter, a L/C-band switchable upconverter, and a SHF/70 MHz down converter.

Litton Guidance and Control Systems, Woodland Hills, CA (1990 – 1991)

Supported integrated GPS/Inertial Navigation System design reviews.

Allen Osborne Associates, Westlake Village, CA (1989 – 1991)

Redesigned the RF front end of a high performance GPS receiver to reduce cost, size, weight, and power consumption.

Principle Investigator for 4 DOD SBIR Phase I Contracts (1990 – 1991)

Awarded four DOD SBIR Phase I contracts. Performed trade studies and prepared final reports for the following topics:

• QPSK and MPSK Transmission and Receiving Equipment, Naval Weapons Center, China Lake, CA

• RPV Range Surveillance and Radio Relay Via Satellite, Pacific Missile Test Center, Oxnard, CA

• Miniature GPS Digital Translator Development, Air Force Space Command (Western Space and Missile Center), Vandenberg AFB, CA

• ECM Resistant GPS Receiver, Harry Diamond Laboratory, Adelphi, MD.