The layout and construction of a readout electronics for rf superconducting quantum interference devices (SQUIDs) with bias frequencies of 3 GHz are described. The electronics uses standard electronic components and can be aligned using a spectrum analyzer. Differences between a conventional 20-MHz electronics and this microwave readout are explained. Each individual circuit block is described and circuit diagrams as well as information for pc-board layout is given. A brief description of thin-film rf-SQUIDs used for experiments with this readout electronics is also included.
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Michael Mück (1992) studied this question.
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