Abstract
The key points of NFC Antenna Integrated with LCD display system are to find the optimal design of matching circuit. Mainly, this design of matching circuit study how to achieve maximum RF energy coupling between matching circuit and tag antenna. In order to achieve optimal matching, it is necessary to increase the series resistance before the filter circuit and cancel the series resistance connected to the antenna Finally, this paper optimizes the balance circuit of the traditional matching circuit of the NFC antenna recommended by the NXP chip, and uses ADS software and Smith chart matching simulation to verify the effectiveness of the circuit.
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