We describe the fabrication process of the Niobium superconducting inductors and the qualification tests performed in our 300 mK cryogenic facility in INFN Pisa of the boomerang shaped PCBs hosting the LC chains and the gradiometric SQUIDs, which are going to be mounted on the back of the SWIPE focal planes. The development of the warm readout electronics is presented, together with the firmware for the generation and readout of the biasing frequency comb.
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D. Vaccaro, A. M. Baldini, F. Cei, L. Galli, M. Grassi, D. Nicolò, M. Piendibene, F. Spinella, A. Tartari, G. Signorelli, "The FDM readout for the LSPE/SWIPE TES bolometers," Proc. SPIE 10708, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX, 1070844 (13 July 2018);