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A UWB-IR Transmitter With Digitally Controlled
提出一种新型超宽带脉冲无线电发射机，具有低功耗、简单设计和精确脉冲生成的特点。
0.18-μm CMOS, 2.2V, 29.7mW
超宽带脉冲无线电数字控制低功耗CMOS
▸创新点1：数字控制脉冲生成（方法创新）。通过数字控制技术实现脉冲生成，简化了设计流程，降低了功耗，同时提高了脉冲形状的精确度。
▸创新点2：相位和振幅单独数字控制（电路创新）。采用独立的数字控制模块分别调节脉冲的相位和振幅，确保了脉冲形状的灵活性和准确性，无需额外的滤波器。
▸创新点3：无需滤波器（系统创新）。通过数字控制方法直接生成符合FCC频谱掩模的脉冲信号，消除了传统设计中滤波器的需求，进一步降低了系统复杂度和功耗。
▸创新点4：低功耗设计（性能创新）。在2.2V供电电压下，平均功耗仅为29.7mW，显著优于传统UWB发射器，适用于低功耗应用场景。
Abstract
A novel transmitter for ultra-wideband (UWB) im- pulse radio has been developed. The proposed architecture enables low-power operation, simple design, and accurate pulse-shape gen- eration. The phase and amplitude of the pulse are controlled sepa- rately and digitally to generate a desired pulse shape. This digital control method also contributes to the low-power transmission and eliminates the need for a filter. The transmitter is fabricated using a 0.18- m CMOS process. The core chip size is only 0.40 mm /50. From experimental measurements, it was found that the generated signal satisfied the FCC spectrum mask, and the average power dis- sipation was only 29.7 mW at A 2.2-V supply voltage. Therefore, the developed UWB transmitter generates accurate pulses with low power consumption and simple design architecture.