Anowar Masud
Chalmers University of Technology, Microwave Electronics Laboratory, Sweden
Mattias Ferndahl
Chalmers University of Technology, Microwave Electronics Laboratory, Sweden
Herbert Zirath
Chalmers University of Technology, Microwave Electronics Laboratory, Sweden \ Ericsson AB, Microwave and High Speed Research Center, Sweden
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Published in: GigaHertz 2003. Proceedings from the Seventh Symposium
Linköping Electronic Conference Proceedings 8:46, p.
Published: 2003-11-06
ISBN:
ISSN: 1650-3686 (print), 1650-3740 (online)
A variable gain single ended MMIC amplifier is demonstrated. A maximum gain of 13 dB with a control range of 13 dB is obtained at 2.5 GHz. The -3 dB bandwidth is 5 GHz. The circuit consists of a cascode input stage with an active load followed by a source follower for impedance transformation. A GaAs pseudomorphic HEMT technology is used for the implementation. The active circuit area is less than 1 mm2.
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