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Trifilar-coupling QVCO using 0.35-µm SiGe HBT technology

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3 Author(s)
Jin-Siang Syu ; Dept. of Commun. Eng., Nat. Chiao Tung Univ., Hsinchu ; Chinchun Meng ; Guo-Wei Huang

This paper demonstrates a trifilar-coupling QVCO with two coupling paths provided by the trifilar transformers. These two coupling paths achieve the output voltage swing optimization and the quadrature signal generation, respectively. Consequently, the trifilar-coupling QVCO using 0.35-mum SiGe HBT technology achieves the 188-dBc/Hz FOM at a 2-V supply.

Published in:

Microwave Conference, 2008. APMC 2008. Asia-Pacific

Date of Conference:

16-20 Dec. 2008