Integrated variable inductor

申请公布号：US2006055470(A1)

申请号：US20040927785

申请日期：2004.08.27

申请公布日期：2006.03.16

申请人：

THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

发明人：LUONG HOWARD C.;KAN LEUNG LAI

分类号：H03J7/02

主分类号：H03J7/02

摘要：A novel form of an integrated variable inductor uses an on-chip transformer together with a variable capacitor. The variable capacitor can either be a varactor or a switched capacitor array and is connected to the secondary coil of the transformer. By changing the capacitance at the secondary coil of a transformer, the equivalent inductance looking into the primary coil of the transformer can be adjusted. With another capacitor in parallel to the primary coil, two different modes of resonance inherently exist, and a very wide frequency tuning range can be achieved by combining the two modes.

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