
基本信息:
- 专利标题: 调频器以及使用该调频器的调频发送电路
- 专利标题(英):Frequency modulator and fm transmission circuit using the same
- 申请号:CN201010109899.2 申请日:2006-12-05
- 公开(公告)号:CN101877588B 公开(公告)日:2012-05-30
- 发明人: 小森博文 , 相良武志
- 申请人: 罗姆股份有限公司
- 申请人地址: 日本京都府
- 专利权人: 罗姆股份有限公司
- 当前专利权人: 罗姆股份有限公司
- 当前专利权人地址: 日本京都府
- 代理机构: 北京市柳沈律师事务所
- 代理人: 胡金珑
- 优先权: 352715/05 2005.12.06 JP; 354733/05 2005.12.08 JP; 360566/05 2005.12.14 JP; 360968/05 2005.12.14 JP; 361795/05 2005.12.15 JP
- 分案原申请号: 2006800255697 2006.12.05
- 主分类号: H04H20/00
- IPC分类号: H04H20/00
In a calculation amplifier (1010), an input signal is inputted via a first resistor (R11) to an inversed input terminal. A second resistor (R12) is arranged on a feedback route between an output terminal and a reversed input terminal of the calculation amplifier (1010). A control voltage (Vcnt) outputted from the calculation amplifier (1010) is inputted to VCO (1012). A divider (1014) divides an output signal (Sout) of the VCO (1012). A phase comparator (1016) compares the output signal of the divider (1014) to a reference clock signal and outputs a voltage in accordance with the phase difference. A loop filter (1018) removes a high-frequency component of the output voltage (Vcp) of the phase comparator (1016) and outputs it to a non-inversed input terminal of the calculation amplifier (1010).
公开/授权文献:
- CN101877588A 调频器以及使用它的调频发送电路 公开/授权日:2010-11-03