发明授权
- 专利标题： Transformer circuit
- 专利标题（中）： 变压器电路
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申请号： US11720319申请日： 2005-11-24
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公开(公告)号： US07760028B2公开(公告)日： 2010-07-20
- 发明人: Mihai A. T. Sanduleanu , Eduard F. Stikvoort
- 申请人： Mihai A. T. Sanduleanu , Eduard F. Stikvoort
- 申请人地址： CH Geneva
- 专利权人： ST-Ericsson SA
- 当前专利权人： ST-Ericsson SA
- 当前专利权人地址： CH Geneva
- 优先权： EP04106101 20041126
- 国际申请： PCT/IB2005/053890 WO 20051124
- 国际公布： WO2006/117599 WO 20061109
- 主分类号： H03F3/45
- IPC分类号： H03F3/45
摘要：
A BALUN circuit (20) for low voltage operation for receiving single ended input signal at an input terminal (24) and providing a differential output signal across a pair of output terminals (OUT+, OUT−) is disclosed. The BALUN circuit (20) comprises a first branch including an input terminal (24) for receiving a single ended input voltage signal (RFin), a transistor (Q1), a resistance (R1) (28), a resistance (RL), and an output terminal (OUT+). A second branch includes a transistor (Q3), a resistance (RL) and an output terminal (OUT−). An operational amplifier (26) maintains current flowing through the resistances RL in the first and second branches substantially equal to each other, in dependence upon the output voltage signal across the output terminals (OUT+, OUT−).
公开/授权文献
- US20080252381A1 Transformer Circuit 公开/授权日：2008-10-16
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