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TRF7970如何实现ISO14443B,远距离通讯

Other Parts Discussed in Thread: TRF7970A

购买了TRF7970A EVM开发板,,外接大功率天线,测试读取身份证,读取距离只有10cm左右,TRF7970发射功率最大只有200mW,有没有参考设计可以增强功率,要求读写卡距离在30cm左右