ROGER ATKINSON


Consultant
3495 Lakeside Drive PMB173
Reno, NV 89509
619-977-2476
roger@rfatkinson.com

EXPERIENCE

DESIGN EXPERIENCE

Analog:

A/D, D/A, Audio compression, Signal conditioning, Voice band telephony, Surge & electrostatic discharge (ESD) protection, EMI/RFI suppression at the source, EMI compliance (MIL-STD-810F, CE, FCC, FAA, NEBS), Grounding & isolation, Noise immunity, Low power circuitry

Communications:

Inmarsat & Iridium satellite voice & data, Network security, VSAT applications, Avionics, Marine communications equipment, Telephone central office switches (analog & digital), Telephone signaling & transmission, Telephone stations, Telephone test, Multiplexing, Inverse multiplexing, Fiber optics, Media converters, Dynamic bandwidth assignment, Circuit switching, Packet switching, VoIP, Voice compression, Echo cancellation, Hybrids (2-wire to 4-wire), Subscriber Line Interface Circuits (SLIC), Pulse code modulation (PCM), Pulse amplitude modulation (PAM), Frequency shift keying (FSK), Delta modulation, BER testing, Clocking & synchronization, Systems integration

Digital:

FPGA, CPLD, Discrete logic, Embedded processors, RAM (dynamic, static, battery or capacitor backup), Flash memory, Synchronized clock distribution, Frequency synthesis, Synchronous & asynchronous serial

Mechanical:

PCB design, Enclosures, Backplanes, Midplanes, Card cages, Design for compliance (MIL-STD-810F, UL, CE, NEBS), Test jigs & fixtures, Prototyping, Cooling (conduction, convection, forced air, Peltier junction)

Other Equipment:

Automatic test equipment, Telemetry, Instrumentation, Industrial controls & automation, Alarms, SCADA, Steppers, Encoders, Motion control & positioning

Power:

Distributed power, Switching supplies (buck, boost, flyback), MIL-STD-1275B compliance, Linear supplies, Telephone ringing (DC to AC), Solar, Battery, N+1 Redundancy, High voltage

Processors/Controllers:

ARM9, ARM7, PIC, AVR, Power PC, X86, 8031/51, 68000, 683XX, HC05, HC11, HC16, Z80, 6800

Interfaces & Protocols: 10/100Base-T, 100Base-FX, EIA-232/422/423/485/530, V.35, DS1 (T1/E1/J1), DS3, OC-3, POTS, DTMF, MFR1, MFR2, E&M signaling

System Design:

Very large system architecture, Single point failure analysis, Fault tolerance, Redundancy, Hot standby, Hot swap, Graceful degradation, Built in self test (BIST), Safety, Scalability, Modularity, Provision for future options and features, System partitioning, Distributed processors, Ease of programming, Feasibility studies, Detailed block diagrams, System specifications, Standards compliance, Homologation

Video:

NTSC text display, Text & graphic overlays on NTSC video, RGB, Composite

LEADERSHIP EXPERIENCE

Product conceptualization, Customer needs analysis, Product line planning, Brainstorming, Coordination with software designers, Mentoring, System installation & transition planning, Technical presentations & sales support, Domestic & offshore outsourcing, ANSI standards committees, Chaired IEEE San Diego Consultants' Network for eight years,

TECHNOLOGY EXPERIENCE

Communications:

PSTN, Satellite packet & circuit data, Microwave, Infra-red line of sight, Spread spectrum, TDMA, CDMA, DECT, CT2, GPS, ISDN (PRI/BRI), DSL, 802.11a/b/g/n, ATM, SONET, SS7, Q.921. Q.931, TCP/IP, UDP, VoIP, Speech recognition, VPN, Firewalls, HomePNA, RFID

Components:

Precision frequency & voltage references, Custom transformers & inductors, DC/DC converters, DSP, VCXO, PLL, Frequency synthesis, Magnetic card readers, Programmable logic controllers (PLC), NTSC video & audio modulators, LCD displays, Single board computers

Packaging:

Sheet metal fabrication, CNC machining, Plastic molding, Vacuum forming

Sensors, Transducers:

Position sensors (Hall effect, eddy current, photo reflective, photo transmissive), Shaft & linear position encoders (quadrature), Microphones, Loudspeakers, Piezo acoustic beepers

Video:

Motion JPEG compression, MPEG2/1, VGA, PAL, VBI data broadcast