Low noise, high linearity RF front end circuit is the key of the whole RF receiver system design.

低噪声、高线性度的射频前端设计是整个射频接收机系统电路设计中的关键。

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Secondly, this paper has made the instructions of the overall structure about the UHF RFID tags, and analysis the circuit design specification of the RF front-end modules.

其次，本文对超高频射频电子标签的整体结构做了介绍，同时分析了射频前端各电路模块的设计指标。

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Then, the paper elaborates the design principles of RF front-end circuit, including high efficient rectifier, modulation circuit, demodulation circuit and ESD protection.

然后本文详细阐述了射频前端电路设计原理及过程，包括高效倍压整流电路、调制电路、解调电路和ESD保护电路。

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