A split-cavity design for the incorporation of a DC bias in a 3D microwave cavity
MA Cohen, M Yuan, BWA de Jong, E Beukers… - Applied Physics …, 2017 - pubs.aip.org
We report on a technique for applying a DC bias in a 3D microwave cavity. We achieve this
by isolating the two halves of the cavity with a dielectric and directly using them as DC
electrodes. As a proof of concept, we embed a variable capacitance diode in the cavity and
tune the resonant frequency with a DC voltage, demonstrating the incorporation of a DC bias
into the 3D cavity with no measurable change in its quality factor at room temperature. We
also characterize the architecture at millikelvin temperatures and show that the split cavity …
by isolating the two halves of the cavity with a dielectric and directly using them as DC
electrodes. As a proof of concept, we embed a variable capacitance diode in the cavity and
tune the resonant frequency with a DC voltage, demonstrating the incorporation of a DC bias
into the 3D cavity with no measurable change in its quality factor at room temperature. We
also characterize the architecture at millikelvin temperatures and show that the split cavity …
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