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Optimization of RF Coil Geometry for Natural Resonant Frequency Determination

Explore variations in wire radius to find natural resonant frequency of a 16mm RF coil. Use discrete voltage generator for driven frequency solving. Learn about broad band impedance and reflection coefficient for tuning and matching. Example in Microwave Office (NI) for RF coil equivalent circuit and matching network.

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Optimization of RF Coil Geometry for Natural Resonant Frequency Determination

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  1. NepTune - RF Coil geometry 16mm B vector – x=0 22mm B vector – y=0 Bz magnitude – x=0

  2. Wire radius variations R=0.25mm R=0.50mm R=1.00mm

  3. Searching for its natural resonant frequency Discrete Voltage Generator is needed - Driven frequency solver Broad Band Impedance Discrete Voltage Port Impedance - Zoom Reflection coefficient

  4. Driven RF Magnetic Field @ 14.8MHz Discrete Voltage Port Reflection coefficient 14.8 MHz H vector @ 14.8 MHz Hz real @ 14.8 MHz along y, z var

  5. Microwave Office (NI) – Tuning and Matching Example on the tuning and matching a resonant circuit RF coil equivalent circuit Matching netwok Tuning Capacitor Impedance Reflection coefficient Q is about 80

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