Inductor coil of the highest possible Q
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physics.class-ph
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coilhighestinductorpossibleq-factoraccordingcross-sectionevolves
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The geometry of an inductor made of a long thin wire and having the highest possible Q-factor is found by numerical optimization. As frequency increases, the Q-factor first grows linearly and then according to a square-root law, while the cross-section of the optimal coil evolves from near-circular to sickle-shaped.
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