Engineer Design
Resume:
Ellicott City, MD *****
adcsmd@r.postjobfree.com
Harmonist, LLC.
Bill Radtke Owner/Principal Engineer
Ellicott City, MD, 21043
240-***-**** • adcsmd@r.postjobfree.com
Technical Experience, Capabilities:
Twenty+ years of technical experience in design, analysis, simulation and product development for medical instrumentation, communications systems and electrical engineering. Major areas of expertise are system design, analog/RF circuit design (DC through 5GHz), FPGA & FPGA-DSP, digital communications techniques, mixed signal systems, embedded systems and SW, analog & digital filter design and implementation. Capabilities:
Analog/RF Hardware design
Mixed-Signals & System Signal Processing
FPGA & DSP
Verilog & VHDL ( Vivado/ISE/Quartus II/Modelsim )
Xilinx/Altera/Lattice ( Spartan-6, Kintex-7 )
3
rd
party IP use and integration
Filter Design & Implement
Multi-Rate Signal Processing (CIC, down-sampling/interpolating) Demodulation (MSK, C4FM, BPSK…) and Correlation
IF Sampling, Multi-Nyquist DAC/ADC
Electro-Optical (Z-Amp, Detectors (PMT/APD/PIN), DWDM, OTDR, HFC) Laser Scanning Confocal & Multiphoton Microscopy
Digital/Embedded Hardware (Cortex/ARM M3/M4, CPLD/FPGA) Embedded Software
C/C++, Eclipse, Visual Studio, AVR Studio, IAR, Linux Cortex/ARM M3/M4, ATMega, ATMEL Studio
SMPS Design (40W, offline and DC/DC)
EMI/RFI Compliance
Digital Modulation (DOCSIS, OFDM, Correlative Coding, QAM, BPSK…) Simulation/Modeling (MWO, Matlab, Mathcad, SPICE)
Toolboxes: (Sig Proc, Filter, Fixed-Point, System-ID, Comm) Schematic/PCB board design & layout (Altium, Orcad etc.) Test equipment use and prototype testing (SA, VSA, Scope, etc.) 4508 Stonecrest Dr.
Ellicott City, MD 21043
adcsmd@r.postjobfree.com
Professional Experience
Harmonist, LLC Columbia, MD
Owner/Principal Engineer 2008 –
• Consulting services to KeyTech/Medimmune
o HW design wearable Bluetooth & RFID (NFC 13.56MHz) medical monitor
• Consulting services to Thorlabs Imagining Research, LLC. o FPGA design of all-digital OCT Imaging k-clock recovery IP utilizing GTX transceiver and GSPS ADC interface (JESD204B) (Zynq FPGA) o Design and Technical Lead for a Wideband Electro-Optical-Modulator
Patent pending technique, industry 1st
High-Voltage LDMOS RTP Crystal driver (>800Vp-p @ 80MHz)
FPGA based Phase-Modulating DDS driver/controller o Design and Technical Lead for a 250MS/s-5GS/s A/D Image Acquisition PCIe card
PCIe 2.0 x4 Interface
Kintex-7 FPGA complete data acquisition system coding and verification
HW PCB design of PCIe card & Vita 57 mezzanines w/ ADC & AFE
Integration of 3rd party DMA core
AXI-4/AIX-Stream IP cores use and integration
Mixed language Verilog/VHDL design
Multi-Rate DSP signal chain blocks (filters, synchronization, formatting)
Digital Photon-Counting DSP Techniques
o Designed 6-Channel 170MSPS 14-bit ADC VITA57.1 FMC card o Designed 4-Channel 1MSPS 16-bit Galvo Waveform Generator o Prototyped an Auto-Focus system for a moving stage CCD (TDI) imaging platform
New technique developed allowed Patent Continuation-in-Part
System & Firmware based on a Cortex M-4 development platform o Designed Time-Delay-Integration (TDI) Stage controller w/ a linear position predictor in Spartan-6 FPGA (VHDL) to control moving stage with a CCD Camera. o Designed a wideband (100MHz) ultra-low noise Transimpedance amplifier for an optical receiver utilizing a Photo Multiplier Tube (PMT). o Designed system controller for the optical scanning subsystem of a Confocal Microscopy Microscope, including Galvanometer and Resonant Scanners. o Designed multi-axis Linear Translation Stage controller.
• Consulting services to Zephyr Technology, Corp
o EC38 Testing of ECG Circuit for FDA approval, developed test procedures, performed testing, and wrote final test results report for FDA submission.
• Consulting services to ITT, Corp
o Designed a High-IF sub-sampling receiver for APCO P25 radio system. o Designed/Coded a DSP demodulator in a Spartan-6 FPGA (VHDL) o This receiver was a feasibility study for a cell phone detection and location system used to locate a “Man-Down” when emergency signaling from a LMR radio is transmitted (Motorola XTS…)
o Redesigned Frequency Synthesizer for the cell phone detection system Technologies: Photon Counting, Confocal Microscopy, Optical Receiver, Florescence Lifetime Microscopy, LMR APCO Receiver, VHDL, Verilog, Altera Quartus II, Spartan-6, Kintex-7, Vivado and ISE tools, Modelsim
Patents (Pending): TDI Imaging method, Laser Autofocus system and method for Microscopy 4508 Stonecrest Dr.
Ellicott City, MD 21043
adcsmd@r.postjobfree.com
Zephyr Technology, Corp Annapolis, MD
Principal Engineer 2010 – 2011
• Designed Physiological Monitoring Device (for Under Armour’s E39 shirt)
• Designed circuits & signal processing for ECG and Respiration measurements
• Designed 802.15.4 ISM wireless transceiver
Technologies: Cortex M3, Arm7, ECG, Bluetooth, Bluetooth LE ITT, Corp (IIW) Columbia, MD
Principal RF Engineer 2009 – 2010
• Developed a Multi-Nyquist DAC Transmitter demonstration platform
• Designed a Bluetooth demonstration HW platform
Technologies: ADS, Multi-Nyquist DAC, SSB modulation, Bluetooth Current Group, LLC Germantown, MD
Principal Engineer/Systems Architect 2004 – 2009
• Designed the System Architecture and was the Lead Engineer of a Broadband Over Power-Lines “Smart-Grid” system to detect and locate Medium Voltage power distribution system faults
• Designed the System Architecture and was the Lead Engineer of a BPL data access system, with 110Mb/s capacity over underground residential distribution power lines
• Designed Rogowski Coil Current sensor for power system fault detection
• Designed Signal Processing methods for power measurements
• Designed a Hybrid Fiber-Coax Optical Node
• Invented 7 BPL Medium Voltage Couplers
Technologies: Eagleware, Broadband Over Powerlines (BPL), Medium Voltage Distribution Systems, Digital Modulation (QAM (16/64/256), QPSK, OFDM), Switch Mode Power Supply, Hybrid-Fiber Coax, Discrete RF Filters, Power Measurement Signal Processing, Inst Amps, Magnetics
Patents: 11,423,195; 11,766,277; 7,714,592; 11,768,871; 7,764,943; 11,555,740; 11,389,063; 11,608,550; 11,265,230; 11,399,529; 7,046,124; 7,307,512; 11,775,205; 11775209; 11,756,858; 7,675,427; 7,804,280; 7,701,357; 11,254,887 4508 Stonecrest Dr.
Ellicott City, MD 21043
adcsmd@r.postjobfree.com
Reveal Technologies, LLC Columbia, MD
Consulting Engineer 2002 – 2004
• Provided engineering consulting services to Current Technologies, LLC o Designed Overhead and Underground BPL RF couplers o Designed RF Upconverter for OFDM Transceiver
• Provided engineering consulting services to PCTEL, Inc. o Analyzed receiver linearity for an 8-way GSM/DCS Antenna splitter Technologies: Eagleware, Matlab, GSM/DCS, Medium Voltage BPL RF Coupler, SMPS Corvis Columbia, MD
Sr. Engineer II 1999 – 2002
• Designed an OC-192 DWDM Receiver w/ Inverse-Mux, and FEC engine
• Led the development of two semi-custom ASICs for OC-192 Inverse-Mux Transceiver o Developed and wrote IC specification(s)
o Managed semi-custom IC development
Technologies: Duobinary (partial-response) Modulation, BPSK, MathCad, Matlab (Simulink), OC-48/OC-192, Mach-Zehnder Optical Modulator (LiNbO3), PIN Photo Diode, Transimpedance Amplifier, Broadband AGC Amplifier, Xilinx FPGA (IMux), CDR Patents: 7,340,183 B2: all-digital implementation of a 5Gb/s BPSK modulator using Manchester Encoding and spectral shaping filter. (This patent material was the basis for SiGe semi-custom ASIC development)
Synaptyx (Telco Systems) Germantown, MD
Sr. Engineer 1996 – 1999
• Led Technical Team for a 48-port Integrated Access Device o Implemented digital PCM(DS0) cross-connect in FPGA o Designed FXS POTs card
o Designed FXO POTs card
• Designed HW for an 8-port OC-3 ATM service I/O module for a large ATM switch
• Led Technical Team and designed HW for a video T1/E1 Inverse Multiplexer Technologies: SPICE, Matlab, Inverse Multiplexer, Telecom (DS3, T1, E1, SONET, OC-3/STS- 1, OC-12, ATM), POTs, PBX (FXO, FXS), Embedded HW (Mot 68360), Altera FPGA, DC/DC converter
4508 Stonecrest Dr.
Ellicott City, MD 21043
adcsmd@r.postjobfree.com
TTC (Acterna) Germantown, MD
Sr. Engineer 1990 – 1996
• Led Technical Team for a STS-1/DS3 telecommunications Bit Error Rate test set
• Led HW Engineering Team on Transmitter and Receiver HW for an Optical Time Domain Reflectometer (OTDR)
Technologies: SPICE, Matlab, Direct Drive Pulsed Laser, Avalanche Photo Diode, Transimpedance Amplifier, Altera/Xilinx FPGA, OTDR Signal Processing Patents
20+ U.S. patents or pending applications
Security Clearance
In-active TS/SCI with full scope polygraph
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