TECHNICAL SKILLS

• OpenWRT (ie. customization for WRT1900AC)
• MS Project & Intellisys Project Management Programs
• Ethernet and TCP/IP - DHCP, SNMP, DNS, ARP, TFTP, FTP, Packet Filters, Switch and Router Design
• Wireless/RF - 802.11x (Digi, DPac, Lantronix), 802.15.4/ZigBee (Tl/Chipcon), Bluetooth (A2DP, HFP/HSP, AVRCP, SPP) and Bluetooth Compliance Testing (including PTS Test Suite), ISM Band Radio (Applied Wireless RX303, RFM TX5003), UHF/VHF Radios (Kenwood & Ritron OEM modules)
• VHDL/Verilog EDA tools: Cadence IUS, Synopsis VCS-MX Mentor Graphics ModelSim, Xlinx “ISE, Aldec “Active- HDL”, Cypress “Warp”, Altera Quartus, Atmel, Abel, PALASM, MACHXL, CUPL
• Schematic Capture: Cadence Capture & Concept HDL, Mentor Graphics Design Architect & DxDesigner, Zuken CR- 5000 & CADStar, Altium Designer, Eagle
• PCB Layout: Cadence Allegro, Mentor Graphics PADS & Expedition, Zuken CADStar, Altium Designer
• Mechanical CAD: AutoCAD, SolidWorks
• Experience with the following simulation/modeling/analysis tools: Advanced Wave Research (AWR) “Microwave Office” and “Visual System Simulator”, NuHertz “Filter Light” (for Digital/Analog filter design), Applied Wave Research “Transmission Line” (for Tx line characterization), HyperLynx “Boardsim/Linesym” (for Signal Integrity/IBIS Analysis), Cadence pSPICE A/D, TESLA (Communications Analysis Software), CC (Analysis & Design of Linear Control Systems), MathCAD, “Smith-chart”
• DSP: TI TMS320C6713/6727, TMS320DM642, DiVinci TMS320DM 6437/6441/6446 ; TI Code Composer Studio Platinum v3.3 IDE, Analog Devices Blackfin, Avnera, Cirrus Logic, Broadcom, Luminari Micro LM3S3739 (ARM Coretex-M3), LSI 403, Freescale Coldfire
• PAL/CPLD/FPGA device families: Xlinx, Altera, Lattice, Quicklogic, Cypress, Atmel, AMD (Vantice)
• RF/Wireless design: Broadcast Video and FM Audio over Coax, GSM and “Microburst” cellular modems, TV and FM Tuners, 802.11a/b/g/n (Dual-band), 802.15.4/ZigBee, TI Chipcon 2431 “radio-location”
• Analog Video/Audio specifications: Composite/PAL/NTSC, FM
• Digital Video/Audio protocols: MPEG, MP3, RTP/RTCP, SIP
• Telephony protocols: T1, ISDN, POTS, G.711, G.712, G.729AB, G.165/168, u-law/a-law
• Analog circuit design using transistors, FET(s), MOSFETS, power regulators, analog filters, amplifiers, tuners, frequency synthesizers, PLL's, mixers, A/D, D/A, etc.. Took specialized classes in college for amplifiers, heterodyne receivers/tuners, PLL's, synthesizers, etc..
• EMI & ESD control (MOV, Thyristors, SurgX, TVS, SIDActor, ferrite beads, etc..)
• Completed upper-level “Communications Systems”, “Digital Communications Systems” & “Control Systems” courses in University. “Digital Filtering” design and techniques using NuHertz “Filter Light”, TI “Code Composer Studio” DSP library
• Audio Test Equipment: Audio Analyzers: PrismSound dScope Series III, Audio Precision APx585

PROFESSIONAL EXPERIENCE

Hardware/Software Consultant

Confidential

Responsibilities:

• Home automation hub (wireless/wired), security devices (door/window contacts), dimmer switch, doorbell ringers w/video and mics, wireless locks, video cameras with intelligent scene recognition
• Architecture Definition
• Schematic capture and PCB layout, microphone system design
• Embedded firmware development, Linux and FreeRTOS
• System Integration: end node/device to hub to cloud (ARTIK Cloud) to web browser or mobile app (Android, iPhone)
• Advanced audio features: voice recognition similar to Amazon “Echo”, source locating, echo cancellation, beam forming
• Architected “universal communication system” which supports Ethernet, broadband PLC (Power Line Communications) and all popular wireless protocols via modular/upgradeable system: WiFi (dual band: 2.4 Ghz and 5 Ghz), Zigbee/Thread, BT/BLE, WiFi, 2.4 Ghz proprietary, and Sub-1 Ghz
• ARM-Ax and ARM-Mx cores, ST Microelectronics, Silicon Labs, etc..
• Architecture definition: high fidelity transparent mode, music storage/sync, Bluetooth: A2DP, HFP/HSP, AVRCP
• Schematic capture and PCB layout
• Firmware development

Confidential

DSP based Fiber Optic Controller

Responsibilities:

• Migrate Atmel AVR uC single-ch design to 40-ch TI TMS320C67xx DSP based design
• Responsible for 100% Embedded firmware development using DSP/BIOS real-time RTOS
• McBSP based SPI (using eDMA), ADC, PWM, UART, and I2C Drivers
• Main multi-tasking application, Control System module, Host Com module, NVRAM module, etc..
• Debug hardware (Main board, A/D FPGA daughtercard and PWM FPGA daughtercard)
• 1.536 Gbit/sec Fiber Optic (GBIC/SFP) “full-duplex” on one side, ~1.7 Gbit/sec SMA interface on other side (interfaced to 70 Ghz Differential-Encoder RF Radio)
• Implemented FEC block, PRBS (Pseudo-Random Bit Sequence generator), Correlator, and I2C Management port in Xlinx Virtex-5 FPGA (VHDL/Verilog Mix)
• Utilized High-Speed Serial RocketIO (GTP)/SerDes transceivers, TX/RX-PMA and TX/RX-PCS blocks, CDR, PLL
• Ground-work on second version with Microblaze CPU, management via ethernet, and uCLinux O/S
• Put together “Proof-of-Concept”: Battery Powered Wireless Camera and line powered Base Station
• Utilized OmniVision CMOS Image Sensor, Low-power FPGA (Quicklogic PolarPro) and 802.11g chipset/module for Camera (mixed VHDL/Verilog), JPEG2000 compression
• Will customize 802.11 MAC, in final product, to improve battery life
• Patented architecture allowed long battery life

Confidential, San Diego, Ca

Hardware Engineering Mgr

Responsibilities:

• Manage Hardware Engineering department
• Oversee team of hardware and embedded firmware developers
• Developed commercial electronic products for internal use by the Retail Industry: RF/Wireless transmitters/receivers, callboxes, telephony equipment, PBX interface cards, 2-way radios, pagers, embedded servers and controllers, rack servers, etc..
• (10) of 20 largest retail outlets (Target, Home Depot, Lowes, ..) are customers
• Responsible for Electronic Circuit Design
• RF/Wireless “Callbox” and receiver firmware development: proprietary ISM band wireless protocol, 802.11b/g (Digi, DPAC, Lantronix), Zigbee/802.15.4 (TI/Chipcon), RSSI based “Location” Engine, Wireless Sensor Mesh Networking, TCP/IP, VoIP (Asterisk), RTP, GSM/GPRS based modems uCLinux, Freescale Coldfire MCF5272 CPU, ARM7, TI MSP430, PIC 12F629, RFM TX5003 ISM Band RF Txmtr, Applied Wireless RX-303 RF Rcvr, Kenwood and Ritron VHF/UHF radios
• Mech Design & Industrial Eng of cases, assemblies, molds, extrusions, mounting brackets, etc..

Confidential

Solar/Battery powered industrial instrumentation controller

Responsibilities:

• Hardware design & schematics of main controller as well as communication daughtercards. Digital & Analog circuit design (op-amps, MOSFETS, linear/switched regulators, 4-20 mA loops)
• Based on Atmel AVR ATMega128L uC. Used Analog Devces AD 7708/7718 16/24 bit A/D (4-20 mA loop input), I2C, SPI, RS-232, external TI DAC8571 D/A (16 bit), custom “DPE” bit -bang bus.
• Developed (2) GSM/GPRS tri-band cellular modem daughter cards: Siemens 900/1800/1900 Mhz chipset (for Europe) & 850/1800/1900 Mhz for North America
• Developed “Microburst” cellular modem daughter card: Skybility 850 Mhz chipset
• Developed v.90 landline modem daughter card: Silicon Labs Si2456 landline modem chipset
• Developed digital filter (8 th Order FIR) for 50/60 Hz rejection of ATMega128 ADC inputs
• Developed embedded I2C & SPI drivers in “C” using “AVR Studio” IDE and “uC/OS-II” Real-time O/S
• Developed “Global Compliance Test Plan” for Safety, Immunity, Emissions, Telecom, GSM

Confidential - Irvine, CA

Lead Project Engineer - Server Division

Responsibilities:

• Responsible for Hardware, Software, and System Integration
• Based on MIPS R4000 CPU (with PCI interface) running Red Hat Linux O/S. Managed through HTML GUI. Provided Email (POP), File Sharing (FTP Server, Samba, Appleshare), Telnet Server, Web Server, WAN (ethernet/modem) connection sharing (NAT), Firewall (packet filter), Web & DNS Caching, Discussion Groups, Doc Mgr, Backup Agent, VPN, anti-SPAM, Web Filtering, RAID
• Customized hardware and embedded (Linux) software (HTML/CGI GUI, “C”)
• Created product specifications (PRD - Product Requirements Document) and Test Procedures
• Created Technology White Papers explaining more complex issues and solutions

Sr. Hardware Design Engineer

Confidential

Responsibilities:

• Standalone “Router” for ISDN/Dial-up (WAN) <-> Ethernet (LAN) (including POTS interface)
• Responsible for hardware design, schematics & logic equations
• Based on Motorola M68360 CPU running PSOS embedded real-time O/S (RTOS)
• Utilized Motorola MC145480 (a-law/u-law) Codec, MC145572 ISDN U-Interface Transceiver, MC145574 ISDN S/T-Interface Transceiver,
• Developed POST (Power On Self Test) & Diagnostics software
• Developed TCP/IP related software drivers and modules (DNS resolver, “Packet Filter”, Tracert, PING, Xmodem, TFTP) in “C” (PSOS O/S)

Confidential - Rancho Cucamonga, CA

Engineering Mgr

Responsibilities:

• Design of 68xxx & SPARC based Single Board Computers, and I/O Peripheral Cards
• Responsible for schematic capture, PCB layout/routing, logic synthesis (CPLD/FPGA/ASIC, VHDL)
• Responsible for porting proprietary debugging/mfg software (“STD - Self Test Diagnostics).
• Developed various BSP's and device drivers (in “C”) for VxWorks, PSOS, PDOS, OS9
• Responsible for “Test Plan”. Specify/create production test software and/or test fixtu res
• Resolve systems integration issues. Travel to customer site when necessary
• Create initial product specification and project schedule
• Create/edit/approve documentation, White Papers, User Manuals, etc.. Approve Mfg Pkg
• Assign tasks to other hardware/software project engineers and technicians