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Search: (WFRF:(Rodenhuis S)) mspu:(conferencepaper) > (2020-2022)

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1.
  • Barkhof, J., et al. (author)
  • ALMA Band 2 Receiver Automated Test System
  • 2022
  • In: 32nd International Symposium of Space Terahertz Technology, ISSTT 2022.
  • Conference paper (peer-reviewed)abstract
    • As part of the ALMA Band 2 project, an automated test system was developed to fully qualify state-of-the-art Band 2 receivers, based on heritage of the Band 9 and Band 5 productions. The RF range of this receiver is 67 - 116 GHz, with a goal IF band of 4-18 GHz. Each receiver will undergo a thorough acceptance testing to verify its operation and performance prior to delivery. The core of the test system are a single-cartridge test cryostat, a dual-channel intermediate frequency signal processor, a vector near-field test system, and script-based measurement and control software that enables automated testing. We present details of the test system and measurement results of the first Band 2 receivers.
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2.
  • Belitsky, Victor, 1955, et al. (author)
  • ALMA Band 2 Cold Cartridge Assembly Design
  • 2022
  • In: 32nd International Symposium of Space Terahertz Technology, ISSTT 2022.
  • Conference paper (peer-reviewed)abstract
    • As part of the ALMA development, we present the design of the ALMA Band 2 Cold Cartridge Assembly (CCA). The Band 2 is the last band that completes the suit of the 10 receiver channels of ALMA. The originally planned ALMA Band 2 receiver cartridge should cover the RF band of 67 - -90 GHz. The recent progress in technology, optics, OMT design and mm-wave amplifiers, however allowed to implement receiver that has an extended RF band up to 116 GHz. Furthermore, the Band 2 receiver pursues 2SB layout and provides 4-18 GHz IF band for two sidebands in a dual-polarization configuration. Here, we describe the design of the Band 2 CCA that includes optics, amplifier assembly, internal RF transport, mechanics and cryogenics. The downconverter part and performances are described elsewhere.
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