Chirp-UWB通信系统中锁相解调接收机的设计与实现

Design and implementation of a PLL demodulation receiver in Chirp-UWB communication systems

Chirp-UWB信号以其强抗干扰、低功耗、低时延、抗多径效应等能力,在无线通信中有其独特的优势。接收机是Chirp-UWB通信系统中的重要组成部分,结构简单、复杂度低的接收机设计一直是Chirp-UWB系统实现的关键之一。根据Chirp-UWB信号的特性,研究并设计了一种Chirp-UWB信号的宽带锁相解调电路。实验表明,锁相环解调Chirp-UWB信号的接收机具有易实现、数据解调可靠、电路成本低等优点。

Because of good performances such as strong anti-interference ability, low-power consumption, anti-multipath effect and so on, Chirp-UWB signal bccome to attract more and more attention. Receiver is an important part of Chirp-UWB communication system. However, the design of a simple-structure, low-complexity receiver is one of the key factors in Chirp-UWB system. According to the characteristics of Chirp-UWB signals ,a demodulation circuit of wideband PLL is designed . The results show that the PLL demodulation receiver of Chirp-UWB signal has many advantages, for instance, easy to implement, reliable data demodulation, low-cost circuit.