提出了一种利用标准0.18μm CMOS工艺实现的单芯片UHF阅读器的发射机。为了实现低成本和全集成的目标,采用了直接上变频结构,主要模块包括截止频率为125 kHz的脉冲整形滤波器,DSB-ASK调制的非平衡式的混频器和两级AB类放大器。就单芯片阅读器的发射机而言,它的整版面积(含PAD和ESD保护)少于2 mm2,具有全集成、低成本的特点。在1.8 V和3.3 V的供电电压下,输出功率达18.6 dBm,各项性能满足EPC GlobalClass1 Gen2协议要求。 A transmitter for a single-chip UHF reader using a standard 0.18μm CMOS process is presented. In order to achieve low-cost and fully integrated target, a direct up-conversion architecture is adopted. The main modules include a pulse shaping filter with a cut-off frequency of 125 kHz, an unbalanced mixer with DSB-ASK modulation, and a two-stage class AB amplifier. For single-chip reader transmitters, its full-page area (with PAD and ESD protection) of less than 2 mm2 provides a fully integrated, low cost solution. At 1.8 V and 3.3 V supply voltage, the output power of 18.6 dBm, the performance of EPC GlobalClass1 Gen2 agreement to meet the requirements.