00000nam 2200000zi 4500 9.895227 CaOODSP 20221107173952 m o d f cr bn||||||||| 210112e199011##oncad obt f000 0 eng d CaOODSP eng rda CaOODSP eng fre Co24-3/7-1433-1990E-PDF Clarke, B., author. A 19.2 GHz cooled HEMT low noise amplifier / by B. Clarke, J. Bradley and M. Cuhaci. Ottawa : Communications Research Centre, November 1990. 1 online resource (vii, 52 pages) : illustrations, graphs. text txt rdacontent computer c rdamedia online resource cr rdacarrier CRC report ; no. 1433 Digitized edition from print [produced by Innovation, Science and Economic Development Canada]. "Communications Devices and Components Branch." Includes bibliographical references (page 52). "A 19.2 GHz cooled low-noise amplifier was developed for a ground terminal application utilizing HEMTs and quartz substrate in a conventional microstrip format. Cooling was provided with thermoelectric devices and a 1.98 dB noise figure and 15 dB associated gain were achieved at 19.2 GHz. The noise figure over the 18.85 to 19.55 GHz frequency band was under 2.2 dB. Two approaches were implemented. Part I describes the "conventional" approach where the entire LNA module was cooled, while Part II describes the "novel" approach where only the HEMT chips were cooled"--Abstract, page iii. Includes abstract in French. Amplifiers (Electronics) Modulation-doped field-effect transistors. Amplificateurs. Transistors HEMT. Communications Research Centre (Canada), issuing body. CRC report ; no. 1433. (CaOODSP)9.882492 PDF 4.64 MB https://publications.gc.ca/collections/collection_2021/isde-ised/co24/Co24-3-7-1433-1990-eng.pdf