The RTL-SDR USB Dongle: A Versatile Tool in the RF Lab
Roland Mller 1 , Torsten Schlumm 1 , Andr Pampel 1 , and Harald E. Mller 1
Max Planck Institute for Human Cognitive and
Brain Sciences, Leipzig, Saxony, Germany
Low-cost USB DVB-T sticks can operate as frontend for
multipurpose Software Defined Radio (SDR) receivers.
Bypassing any decoder, real/inphase and
imaginary/quadrature byte streams are provided. Many
applications are conceivable in MRI, including amplitude
demodulation to restore the RF pulse envelope and
spectral analysis. Recording transmitted RF pulses can
help to find mistakes during sequence development or to
identify malfunctioning scanner hardware. More and more
electronic devices are operated within the examination
room or even inside the scanner bore. Unwanted emissions
near the Larmor frequency and insufficient shielding can
already be identified in the RF lab.
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