发明申请
- 专利标题： Transmitter and wireless communication apparatus using the transmitter
- 专利标题（中）： 使用发射机的发射机和无线通信设备
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申请号： US10509753申请日： 2003-02-18
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公开(公告)号： US20050176388A1公开(公告)日： 2005-08-11
- 发明人: Taizo Yamawaki , Hisayoshi Kajiwara , Ryoichi Takano , Patrick Wurm
- 申请人： Taizo Yamawaki , Hisayoshi Kajiwara , Ryoichi Takano , Patrick Wurm
- 优先权： EP0212740.5 20020531
- 国际申请： PCT/GB03/00778 WO 20030218
- 主分类号： H03F3/189
- IPC分类号： H03F3/189 ; H03G3/30 ; H04B1/04 ; H04L27/36 ; H01Q11/12
摘要：
In a transmitter of polar-loop architecture having a phase control loop and an amplitude control loop, as loop filters for controlling a loop band of the amplitude control loop, a first filter with lag-lead characteristics (secondary or more filter including a capacitor and a resistor) and a second filter of a perfect integrator type (filter including only a capacitor) are employed, and current-output type circuits are connected to respective front stages of the first and second filters.