Performance of the first three preproduction 35–50 GHz receiver front-ends for atacama large millimeter / submillimeter array

Yuh-Jing Hwang, Chau-Ching Chiong, Yau-De Ted Huang, Chi-Den Huang, Ching-Tang Liu, Fang-Chia Hsieh, Yen-Hsiang Tseng, Po-Han Chiang, Chih-Cheng Chang, Chin-Ting Ho, Shou-Ting Jian, Chien-Feng Lee, Yi-Wei Lee, Alvaro Gonzalez, John Effland, Kamaljeet Saini, Marian Pospieszalski, Ricardo Finger, Valeria Tapia, Nicolas Reyes

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

1 Citation (Scopus)


The Band-1 receiver front-end cartridges for Atacama Large Millimeter Array, which covered 35-50 GHz frequency range, are now in preproduction stage. For the first three preproduction cartridges, the measured receiver noise temperature is less than 16-31K for any combination of the inband RF and LO frequencies. The measured gain flatness, even with the limitation of the optical window of the cryostat and the broadband matching of the cryogenic amplifiers, is typically lower than 5 dB over any 2GHz window. Extracted aperture beam efficiency is typically higher than 80% over the full frequency range. The crosstalk over the orthogonal channel is lower than -63 dB. For the suppression of the unwanted lower sideband, the imaged band suppression is higher than 20 dB for the worst case and around 30 dB typically.
Original languageEnglish
Title of host publication2017 47th European Microwave Conference (EuMC)
Place of PublicationPiscataway
Number of pages4
ISBN (Electronic)978-2-87487-047-7
ISBN (Print)978-1-5386-3964-1
Publication statusPublished - 19 Dec 2017
Externally publishedYes
Event47th European Microwave Conference (EuMC 2017) - Nuremberg, Germany
Duration: 10 Oct 201712 Oct 2017
Conference number: 47


Conference47th European Microwave Conference (EuMC 2017)
Abbreviated titleEuMC 2017
Internet address


  • cryogenic low-noise amplifiers
  • gain variation
  • heterodyne receiver
  • radio astronomy
  • upper sideband scheme


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