@inproceedings{24d6640ee0cf4ec9a1216750743371ac,
title = "Sub-20-K noise temperature LNA for 67-90 GHz frequency band",
abstract = "Indium Phosphide MMIC LNAs are enabling new capabilities in instrument development. The development of arrays of hundreds of cryogenically-cooled millimeter wave receivers has previously been challenging, but is now achievable with highly repeatable MMIC processes and advances in cryogenic on-wafer testing of LNAs. We have developed InP HEMT LNA MMICs for the 67-90 GHz frequency band that is the last missing receiver system from the ALMA. These MMICs provided average performance of less than 22.5 K noise temperature over the frequency band and minimum noise temperature of 17.5 K at 72 GHz. These LNAs achieve NT=220K (NF=2.4dB) at 90 GHz for Earth remote sensing instrument on Sentinel-6. Our HRMR (High Resolution Microwave Radiometer) achieves NEDT < 0.05K enabling Sentinel-6 to measure coastal ocean topography at 3 km resolution with better than 1 cm accuracy.",
keywords = "ALMA, Cryogenic, InP, LNA, MMIC, Ocean topography, Sentinel-6",
author = "Pekka Kangaslahti and Kieran Cleary and Jacob Kooi and Lorene Samoska and Richard Lai and Michael Barsky and Xiaobing Mei and Stephen Sarkozy and Mikko Varonen",
year = "2017",
month = oct,
day = "4",
doi = "10.1109/MWSYM.2017.8059049",
language = "English",
series = "IEEE MTT-S International Microwave Symposium Digest",
publisher = "IEEE",
pages = "1965--1968",
booktitle = "2017 IEEE MTT-S International Microwave Symposium, IMS 2017",
address = "United States",
note = "IEEE MTT-S International Microwave Symposium, IMS ; Conference date: 04-06-2017 Through 09-06-2017",
}