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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...
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...
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