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GROUP 6WIDEBAND ARTIFICIAL PULSAR
Alexander Botten
Kerlin Canelli
Advisor: Randy McCullough
BACKGROUND
What is a Pulsar?
rotating neutron star that emits a beam of electromagnetic radiation
Think of a lighthouse
BACKGROUND
the world's largest fully steerable radio telescope.
Operates 0.1-116 GHz Discovered three new
millisecond pulsars
Green Bank Telescope
PROBLEM STATEMENT
Over the years, analytical systems have been updated.
Limited time for testing
Solution: Artificial Pulsar
CURRENT ARTIFICIAL PULSAR
Does not accurately represent real pulsar Bandwith is too small No pulse dispersion Standard signal generator
NEW ARTIFICIAL PULSAR
Larger Bandwith – (100MHz-1000MHz)
Command Line Interface
Adjustable pulse amplitude
User selectable pulse width and period
Polarization of pulses
Independent noise floor
Sub pulses and interpulses
CURRENT BLOCK DIAGRAM
NEW DESIGN
COMPONENTS
Noise source Digital to Analog Converters Band pass filter Voltage Controlled Attenuator Dispersive Non-Linear
Transmission Line Power Dividers
DESIGN AND IMPLEMENTATION
Design and simulate using Green Bank software
Finalized design, build
Operator’s Manual
CONCLUSION
Current ArtificIal pulsar is outdated
New Artificial Pulsar needed to test backends
One-off Scientific device
QUESTIONS?
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