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http://dx.doi.org/10.5140/JASS.2004.21.1.029

THE DEVELOPMENT OF Q-BAND HEMT RECEIVER FOR VLBI  

제도홍 (한국천문연구원 전파천문연구부)
한석태 (한국천문연구원 전파천문연구부)
김태성 (한국천문연구원 전파천문연구부)
김현주 (한국천문연구원 전파천문연구부)
김광동 (한국천문연구원 전파천문연구부)
정문희 (한국천문연구원 전파천문연구부)
이창훈 (한국천문연구원 전파천문연구부)
노덕규 (한국천문연구원 전파천문연구부)
Publication Information
Journal of Astronomy and Space Sciences / v.21, no.1, 2004 , pp. 29-38 More about this Journal
Abstract
A ultra low noise Q-band HEMT receiver for VLBI has been developed using a local oscillator with a very high phase stability. The performance of receiver was verified by comparison with receivers which were developed at the other countries. The receiver noise temperature shows 65 K in the frequency ragne from 42 ㎓ to 44 ㎓, less than 100 K from 39 ㎓ to 46 ㎓, respectively. A receiver noise temperature at SiO major line of 43㎓ which will be mainly observed by using this receiver has been optimized.
Keywords
low noise receiver; HEMT; VLBI;
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