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中文摘要：
设计并实现了一种基于单载波UWB（Ultra-wide Band）通信系统中OOK（On-off Keying）调制电路，电路通过UWB极窄脉冲控制BJ]r振荡器的导通或截止来实现UWB信号对载波的调制，将UWB信号的中心频率搬移到FCC开放频段（3．1GHz-10．6GHz）。通过对实际电路的测试，得出当UWB脉冲重复速率为310MHz时，可以实现载波对UWB信号稳定、高效的调制，结果证明此电路是一种非常有效的调制电路。
英文摘要：
An OOK modulation circuit design for single-carrier UWB system is presented in this paper. The UWB signal is modulated by controlling the BJT oscillator on and off, and moving UWB signal center-frequency to FCC regulation 13.1 GHz- 10.6 GHz）. UWB signal can be modulated when the pulse repetition frequency is 310 MHz. The proposed circuit has proven to he robust and repeatable.
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