The RTL-SDR USB Dongle: A Versatile Tool in the RF Lab

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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