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High Performance Software Defined Radio The Next Generation. Dan Quigley - N7HQ. Looks Like This!. Radio Follows Moore’s Law Too. First 50 Years Electro Mechanical Vacuum Tube Second 50 Transistor IC Next… ?. No Software. Peripheral Software. Integrated!. Software and Amateur Radio.

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Presentation Transcript
looks like this
Looks Like This!

MicroHAMS Digital Conference 2009

radio follows moore s law too
Radio Follows Moore’s Law Too

MicroHAMS Digital Conference 2009

  • First 50 Years
    • Electro Mechanical
    • Vacuum Tube
  • Second 50
    • Transistor
    • IC
  • Next… ?
no software
No Software

MicroHAMS Digital Conference 2009

peripheral software
Peripheral Software

MicroHAMS Digital Conference 2009

software and amateur radio
Software and Amateur Radio

MicroHAMS Digital Conference 2009

  • No Software
      • Marconi – Today!
  • Peripheral
      • “Digital” Modes
      • Signal Analysis and Decoding
        • 1977 … “The Wow! Signal”
      • Station Automation
      • Audio DSP
  • Integrated
      • IF/RF DSP
      • The Software is the Radio
      • Personalization/Customization
amateur radio software domains
Amateur Radio Software Domains

Converging

MicroHAMS Digital Conference 2009

  • Housekeeping and Convenience
    • Logging and Contest
    • Web-based (e.g. DX Spots, QRZ)
  • Engineering
    • CAD
    • Antenna Design
    • Propagation
  • Control and Automation
    • Station Control
    • Remote Stations
  • Signal Processing
    • DSP
    • Data and Voice
    • Spectrum
  • Software Defined Radio
    • Software is the Radio
  • Individualized (Custom) Software
control and automation
Control and Automation

MicroHAMS Digital Conference 2009

  • Software Driven Radio
    • CAT – Computer (Aided/Automation) Technology
      • Direct Control
      • Scanner Memories
    • Usually RS-232, USB or other serial protocol
    • Ethernet emerging as control endpoint
  • Other Shack Equipment
    • Antennas and Antenna Rotors
    • Keyers
    • General Switching
digital signal processing
Digital Signal Processing

ADC

IF Frequency

ADC

Sig

Proc

Sig

Proc

DAC

DAC

AF

Amp

AF

Amp

AF Input

IF Input

MicroHAMS Digital Conference 2009

  • Converts signal to the digital domain
  • Analyzes and Processes the data
  • Converts back to the analog domain
  • Upgrade: AF to IF
the ideal digital radio
The Ideal (Digital) Radio

SDR

RF Frequency

ADC

Sig

Proc

DAC

AF

Amp

RF Input

MicroHAMS Digital Conference 2009

  • Direct RF Conversion (zero IF)
  • Signal analysis and processing
  • Converts to the analog domain
software defined radio sdr
Software Defined Radio (SDR)

MicroHAMS Digital Conference 2009

  • Radio Functionality defined in Software
  • Reprogrammable and Reconfigurable
  • Hardware Performs different functions at different times
  • Supports broad range of frequencies and modulations
  • Physical layer behavior is significantly altered through changes in its software
  • Best Known Examples:
    • FlexRadio Systems (SDR-1000, 3000, 5000)
    • Tony Parks (KB9YIG) SoftRock series
    • Wonder Radio
    • HPSDR (High Performance Software Defined Radio)
sdr architecture
SDR Architecture

Programmable Hardware – DSP, FPGA, ASIC

PC

Flexible

RF

Hardware

  • Sample Rate Conversion
  • Baseband I/Q
  • DSP PROCESSING
  • Modem Functions
  • Control
  • Module Library
  • Operating System

ADC

Output

Input

DAC

Hardware Part

Software Part

MicroHAMS Digital Conference 2009

early sdr receiver
Early SDR Receiver

MicroHAMS Digital Conference 2009

early sdr exciter
Early SDR Exciter

MicroHAMS Digital Conference 2009

hpsdr
HPSDR

MicroHAMS Digital Conference 2009

  • Open Source Development
    • TAPR OHL, GPL
  • Multiple Projects – each a building block for a radio
    • Programmable hardware (FPGA, µControllers)
    • Unifying Backplane (ATLAS)
  • Advancing the State of the Radio Art
  • Core Projects:
    • OZY – Interface
    • Mercury: 1.8 – 55MHz Receiver
    • Penelope: 1.8 – 55MHz Exciter
atlas backplane
Atlas Backplane

MicroHAMS Digital Conference 2009

  • Six slots
  • ATX power supply
  • LED Indicators
ozy ozymandias
OZY (Ozymandias)

MicroHAMS Digital Conference 2009

  • USB 2.0
  • FPGA
  • Serial Ports
  • Parallel Port
  • GPIO Lines
  • USB Blaster
ozy block diagram
OZY Block Diagram

MicroHAMS Digital Conference 2009

mercury 0 55mhz direct sampling receiver
Mercury 0-55MHzDirect Sampling Receiver

MicroHAMS Digital Conference 2009

  • LT2208 @ 100MHz
    • 1.5v pep
    • SFDR 100dB
    • 200 ohm input
  • Off Carrier Rejection
    • 300Hz -110dBc/Hz
    • 2000Hz -139 dBc/Hz
    • 5000Hz -142 dBc/Hz
  • Noise Figure 23.4dB
  • IP3 46.8 dBm
mercury simplified block diagram
Mercury Simplified Block Diagram

MicroHAMS Digital Conference 2009

mercury block diagram
Mercury Block Diagram

MicroHAMS Digital Conference 2009

penelope
Penelope

MicroHAMS Digital Conference 2009

  • 1.8 – 55MHz
  • 1W pep output
  • All Mode
  • 125MHz reference
    • Outboard provisions
  • FPGA based DUC
  • ALC in FPGA
    • Avoids delays
penelope simplified block diagram
Penelope Simplified Block Diagram

MicroHAMS Digital Conference 2009

penelope duc block diagram direct up conversion
Penelope (DUC) Block DiagramDirect Up Conversion!

MicroHAMS Digital Conference 2009

example project
Example Project

MicroHAMS Digital Conference 2009

  • Build an HPSDR HF Transceiver
    • 160m – 10m (6m nice-to-have)
    • 100w
    • 13.8vdc (nice to have)
  • Essentially An Integration Effort
    • Three HPSDR.ORG boards
      • Mercury, Penelope, Ozy + backplane
    • Power supply (ATX)
    • RF Power Amplifier
    • Transmit Filter
    • Enclosure
the search for missing items
The Search for Missing Items…

MicroHAMS Digital Conference 2009

  • ATX Power Supply
    • Pico PSU-120wi-25
  • RF Power Amp & Filter
    • Several “off-the-shelf” options
      • K5OOR 10w PA + home-brew PA and filters
      • Communications Concepts kits
      • Tokyo Hy-Power (nice but expensive)
    • Junk Box (TS-50s)
  • Enclosure
    • Various Grey Boxes
    • Junk Box… hmmmm…
and the winner is
And the Winner Is..

MicroHAMS Digital Conference 2009

idea integrate the controls
Idea… Integrate the Controls!

MicroHAMS Digital Conference 2009

  • More Items Required
    • Frequency Display
      • Delcom 8-digit LED
    • AD for Pushbuttons and Potentiometers
      • Labjack U3
    • Encoder for VFO Control
      • Griffin PowerMate
    • USB Hub
      • Junkbox
    • Software Glue
results
Results…

MicroHAMS Digital Conference 2009

don t forget the remote vfo
Don’t Forget The Remote VFO!

MicroHAMS Digital Conference 2009

hpsdr the next generation
HPSDR – The Next Generation!

MicroHAMS Digital Conference 2009

resources
Resources

MicroHAMS Digital Conference 2009

  • Email
    • dquigley@msn.com or n7hq@arrl.org
  • Web Resources:
    • www.microsoft.com
    • www.hpsdr.org
    • www.tapr.org
    • http://www.delcom-eng.com
    • http://www.labjack.com
slide35
Demo

MicroHAMS Digital Conference 2009