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Recent content by jasonlitw

  1. jasonlitw

    GSM interference decoupling

    This problem is hard to solve. First , you need to check which part is coupled by GSM TDD noise. From MIC input or Speaker output ?? Meanwhile , you also need to check your OPamp spec. Does it have high PSRR ?? When RF is transmitting , it will consume more current than receive and cause big...
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