- 专利标题: Amplifier linearization in a radio frequency system
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申请号: US15191960申请日: 2016-06-24
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公开(公告)号: US09893682B2公开(公告)日: 2018-02-13
- 发明人: Yu Zhu , Boshi Jin , Steven Christopher Sprinkle , Florinel G. Balteanu , Oleksiy Klimashov , Dylan Charles Bartle , Paul T. DiCarlo
- 申请人: Skyworks Solutions, Inc.
- 申请人地址: US MA Woburn
- 专利权人: Skyworks Solutions, Inc.
- 当前专利权人: Skyworks Solutions, Inc.
- 当前专利权人地址: US MA Woburn
- 代理机构: Knobbe, Martens, Olson & Bear, LLP
- 主分类号: H04B1/04
- IPC分类号: H04B1/04 ; H03F3/45 ; H03F1/32 ; H03F3/24 ; H03F3/193 ; H03F3/19 ; H04B1/48 ; H04B1/40 ; H04B1/3827 ; H04B1/525 ; H03F1/02 ; H03F3/195 ; H03F3/21 ; H04W88/02
摘要:
A linearization circuit that reduces intermodulation distortion in an amplifier output receives a first signal that includes a first frequency and a second frequency and generates a difference signal having a frequency approximately equal to the difference of the first frequency and the second frequency. The linearization circuit generates an envelope signal based at least in part on a power level of the first signal and adjusts a magnitude of the difference signal based on the envelope signal. When the amplifier receives the first signal at an input terminal and the adjusted signal at a second terminal, intermodulation between the adjusted signal and the first signal cancels at least a portion of the intermodulation products that result from the intermodulation of the first frequency and the second frequency.
公开/授权文献
- US20170005625A1 AMPLIFIER LINEARIZATION IN A RADIO FREQUENCY SYSTEM 公开/授权日:2017-01-05
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