发明申请
US20130225107A1 WIRELESS DEVICE WITH FILTERS TO SUPPORT CO-EXISTENCE IN ADJACENT FREQUENCY BANDS
审中-公开
带滤波器的无线设备支持相邻频段中的共存
- 专利标题： WIRELESS DEVICE WITH FILTERS TO SUPPORT CO-EXISTENCE IN ADJACENT FREQUENCY BANDS
- 专利标题（中）： 带滤波器的无线设备支持相邻频段中的共存
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申请号： US13584273申请日： 2012-08-13
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公开(公告)号： US20130225107A1公开(公告)日： 2013-08-29
- 发明人: Mark Vernon Lane , Chang-Ho Lee , Christian Holenstein , Mahim Ranjan , Praveen-Kumar Sampath , Frederic Bossu , Sumit Verma , Wesley Alan Sampson
- 申请人： Mark Vernon Lane , Chang-Ho Lee , Christian Holenstein , Mahim Ranjan , Praveen-Kumar Sampath , Frederic Bossu , Sumit Verma , Wesley Alan Sampson
- 申请人地址： US CA San Diego
- 专利权人： QUALCOMM INCORPORATED
- 当前专利权人： QUALCOMM INCORPORATED
- 当前专利权人地址： US CA San Diego
- 主分类号： H03G3/20
- IPC分类号： H03G3/20
摘要：
Techniques for using a narrow filter located before a power amplifier to reduce interference in an adjacent frequency band are disclosed. In an exemplary design, an apparatus (e.g., a wireless device) includes the narrow filter and the power amplifier. The narrow filter is for a first frequency band (e.g., Band 40) and has a first bandwidth that is more narrow than the first frequency band. The narrow filter receives and filters an input radio frequency (RF) signal and provides a filtered RF signal. The power amplifier receives and amplifies the filtered RF signal and provides an amplified RF signal. The apparatus may further include a full filter for the first frequency band and located after the power amplifier. The full filter receives and filters the amplified RF signal and provides an output RF signal when it is selected for use.
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