发明授权
- 专利标题： Switched capacitor load compensator
- 专利标题（中）： 开关电容负载补偿器
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申请号： US787341申请日： 1991-11-04
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公开(公告)号： US5319800A公开(公告)日： 1994-06-07
- 发明人: Yusuf L. Erbora , Branko L. Avanic
- 申请人： Yusuf L. Erbora , Branko L. Avanic
- 申请人地址： IL Schaumburg
- 专利权人： Motorola, Inc.
- 当前专利权人： Motorola, Inc.
- 当前专利权人地址： IL Schaumburg
- 主分类号： H04B1/40
- IPC分类号： H04B1/40 ; H04B1/44
摘要：
In a radio transceiver (11) including a voltage controlled oscillator (VCO) (24) having an output for coupling to a switchable load (32, 30), a switch (42) couples a compensating load (44) to the output of the VCO when the switchable load is in an off state. The compensating load has an impedance that compensates for the decoupling of the load impedance from the output of the VCO, thus avoiding frequency pull problems. In a further aspect of the invention a voltage variable capacitor (100) is used as the switch.
公开/授权文献
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