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Coplanar waveguide balanced amplifier using bipolar junction transistors and backed ground-plane hybrids

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3 Author(s)
Akkaraekthalin, P. ; Dept. of Electr. Eng., King Mongkut''s Inst. of Technol., Bangkok, Thailand ; Jongjitaree, S. ; Vivek, V.

This research proposes a new balanced amplifier based on a coplanar waveguide (CPW) structure with conductor backed ground-plane hybrids. The amplifier has been designed and built by utilizing BJTs on a microwave substrate. The experimental results of the proposed amplifier agree very well with simulation. The amplifier gain of ~7 dB and the large bandwidth of ⩾600 MHz have been achieved at the operating frequency of 1.8 GHz. These results show the feasibility of applying the CPW balanced amplifier with backed ground-plane hybrids in microwave and millimeter-wave integrated circuits and systems

Published in:

TENCON 2001. Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology  (Volume:2 )

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