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High Performance Software Defined Radio The Next Generation

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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High Performance Software Defined Radio The Next Generation

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  1. High Performance Software Defined RadioThe Next Generation Dan Quigley - N7HQ

  2. Looks Like This! MicroHAMS Digital Conference 2009

  3. Radio Follows Moore’s Law Too MicroHAMS Digital Conference 2009 • First 50 Years • Electro Mechanical • Vacuum Tube • Second 50 • Transistor • IC • Next… ?

  4. No Software MicroHAMS Digital Conference 2009

  5. Peripheral Software MicroHAMS Digital Conference 2009

  6. Integrated!

  7. 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

  8. 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

  9. 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

  10. 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

  11. 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

  12. 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)

  13. 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

  14. Early SDR Receiver MicroHAMS Digital Conference 2009

  15. Early SDR Exciter MicroHAMS Digital Conference 2009

  16. 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

  17. Atlas Backplane MicroHAMS Digital Conference 2009 • Six slots • ATX power supply • LED Indicators

  18. OZY (Ozymandias) MicroHAMS Digital Conference 2009 • USB 2.0 • FPGA • Serial Ports • Parallel Port • GPIO Lines • USB Blaster

  19. OZY Block Diagram MicroHAMS Digital Conference 2009

  20. 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

  21. Mercury Simplified Block Diagram MicroHAMS Digital Conference 2009

  22. Mercury Block Diagram MicroHAMS Digital Conference 2009

  23. 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

  24. Penelope Simplified Block Diagram MicroHAMS Digital Conference 2009

  25. Penelope (DUC) Block DiagramDirect Up Conversion! MicroHAMS Digital Conference 2009

  26. 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

  27. 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…

  28. And the Winner Is.. MicroHAMS Digital Conference 2009

  29. 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

  30. Results… MicroHAMS Digital Conference 2009

  31. MicroHAMS Digital Conference 2009

  32. Don’t Forget The Remote VFO! MicroHAMS Digital Conference 2009

  33. HPSDR – The Next Generation! MicroHAMS Digital Conference 2009

  34. 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

  35. Demo MicroHAMS Digital Conference 2009

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