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我在一份“TRF7960A RFID Multiplexer Example System ”资料上看到建议使用PE42440 + PE4257来做多天线切换，但是我从PE42440芯片的datasheet上看到支持的频段范围为50-3000Mhz，而芯片工作频段为13.56MHz，若按资料上的建议去设计，是否会存在问题？
