- 专利标题: AMPLIFIER LINEARIZATION IN A RADIO FREQUENCY SYSTEM
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申请号: US15817591申请日: 2017-11-20
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公开(公告)号: US20180167037A1公开(公告)日: 2018-06-14
- 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.
- 主分类号: H03F1/32
- IPC分类号: H03F1/32 ; H03F3/45 ; H04B1/40 ; H04B1/3827 ; H04B1/525 ; H03F3/19 ; H03F1/02 ; H03F3/195 ; H03F3/21 ; H03F3/193 ; H03F3/24 ; H04B1/48
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
- US10164582B2 Amplifier linearization in a radio frequency system 公开/授权日:2018-12-25
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