发明授权
EP1402643B1 TUNABLE VOLTAGE CONTROLLED OSCILLATOR CIRCUIT HAVING AIDED ACQUISITION AND METHODS FOR OPERATING THE SAME
有权
可调谐压控WITH ACQUISITION HELP AND METHOD振荡器电路用于操作该
- 专利标题： TUNABLE VOLTAGE CONTROLLED OSCILLATOR CIRCUIT HAVING AIDED ACQUISITION AND METHODS FOR OPERATING THE SAME
- 专利标题（中）： 可调谐压控WITH ACQUISITION HELP AND METHOD振荡器电路用于操作该
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申请号： EP02726967.9申请日： 2002-06-04
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公开(公告)号： EP1402643B1公开(公告)日： 2006-05-31
- 发明人: JUSTICE, Scott, R. , BENGTSSON, Erik, L.
- 申请人： Ericsson Inc.
- 申请人地址： 511 Davis Drive Research Triangle Park, NC 27709 US
- 专利权人： Ericsson Inc.
- 当前专利权人： Ericsson Inc.
- 当前专利权人地址： 511 Davis Drive Research Triangle Park, NC 27709 US
- 代理机构： Sjöberg, Mats Hakan
- 优先权： US874408 20010604
- 国际公布： WO2002099974 20021212
- 主分类号： H03L7/099
- IPC分类号： H03L7/099 ; H03L7/12 ; H03L7/10
摘要：
Voltage controlled oscillator circuits are provided including a voltage controlled oscillator (VCO) having an input and an output responsive to the input. A tuning circuit coupled to the VCO sets a relationship between the input and the output of the VCO. An aided acquisition circuit is coupled to the input of the VCO. A control circuit selects a state of the tuning circuit to set the relationship between the input and the output of the VCO. The control circuit also controls operation of the aided acquisition circuit responsive to changes in the state of the tuning circuit. Methods for operating voltage controlled oscillator circuits are also provided. In addition, phase lock loop circuits and mobile terminals including the voltage controlled oscillator circuits are provided.
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