发明名称 |
Transmitter and wireless communication apparatus using the transmitter |
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.
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申请公布号 |
US7424276(B2) |
申请公布日期 |
2008.09.09 |
申请号 |
US20040509753 |
申请日期 |
2004.09.30 |
申请人 |
RENESAS TECHNOLOGY CORP.;TTPCOM LIMITED |
发明人 |
YAMAWAKI TAIZO;KAJIWARA HISAYOSHI;TAKANO RYOICHI;WURM PATRICK |
分类号 |
H03F3/189;H04B1/04;H03G3/30;H04L27/36 |
主分类号 |
H03F3/189 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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