Program and Abstract Book - SRON

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19 th International Symposium on Space Terahertz Technology 3-7 100 GHz sideband separating mixer with wide IF band: First results D. Maier, D. Billon-Pierron, J. Reverdy, and M. Schicke Institut de RadioAstronomie Millimétrique (IRAM) 300, rue de la piscine 38406 St. Martin d’Hères France We are reporting on the design of a sideband separating SIS mixer covering the rf frequency range from 80 to 116 GHz. The mixer consists of a waveguide rf quadrature hybrid coupler, two DSB mixers and an IF hybrid coupler. Rf coupler, LO couplers, LO splitter and mixer blocks have been integrated into one e-plane split-block. The DSB mixers consist of Nb-Al/AlO x -Nb junctions integrated in Nb tuning structures. Because of the low capacitance of the mixer chip it works for IF frequencies from 4 to 12 GHz. Although in the final design the junctions are directly mounted into the integrated coupler/mixer block without prior testing, mixer blocks have been fabricated to be able to validate the mixer design by DSB mixer tests. Those tests confirmed that the design covers both rf and IF design frequency bands obtaining good and flat noise temperatures. First 2SB mixer tests showed good noise temperatures and image rejections. 36
19 th International Symposium on Space Terahertz Technology Session 4 – Herschel-HIFI Monday 28 April 2008 16:10 – 17:50 Chair: Thijs de Graauw 16:10 - 16:35 4-1 The Herschel Mission and Key Göran Pilbratt, ESA Programmes (Invited) 16:35 - 16:50 4-2 Performance of the superconducting Gert de Lange, mixers for the HIFI instrument SRON 16:50 - 17:05 4-3 HIFI Flight Model Testing at Instrument Pieter Dieleman, and Satellite Level SRON 17:05 - 17:20 4-4 HIFI Instrument Stability as measured Jacob Kooi, during the ILT phase: Results and Caltech operational impacts 17:20 - 17:35 4-5 Flight Attenuators for the HIFI Local Willem Jellema, Oscillator Bands SRON 17:35 - 17:50 4-6 HIFI Pre-launch Calibration Results David Teyssier, ESA 18:00 - 19:00 Poster Session and Reception 37
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Program and Abstract Book - SRON

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