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arXiv · 1710.01998

Quality factor of a transmission line coupled coplanar waveguide resonator

Ilya Besedin·Alexey P. Menushenkov
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Abstract

We investigate analytically the coupling of a coplanar waveguide resonator to a coplanar waveguide feedline. Using a conformal mapping technique we obtain an expression for the characteristic mode impedances and coupling coefficients of an asymmetric multi-conductor transmission line. Leading order terms for the external quality factor and frequency shift are calculated. The obtained analytical results are relevant for designing circuit-QED quantum systems and frequency division multiplexing of superconducting bolometers, detectors and similar microwave-range multi-pixel devices.

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Ilya Besedin, Alexey P. Menushenkov. 2017-09-13. Quality factor of a transmission line coupled coplanar waveguide resonator. https://doi.org/10.1140/epjqt%2Fs40507-018-0066-3

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