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UWB是一个复杂的通信系统,本文从这个复杂的通信系统中截取一个小部分作为了解和研究的对象。UWB信号在一个开放的信道中传输,信道中能量有损耗,到达接收端时,通过及时的损耗补偿才能利于检波。根据实际损耗的测量本文选择42db的前置放大器电路实现这种补偿过程。在设计过程中,采用了SYSTEMVIEW软件进行信号和放大系统的理论仿真,分析放大后的信号形式。接着又设计了放大器的电子电路,并进行参数优化和噪声分析。结果显示该电路符合需求的低噪声要求。
UWB is a complex communication system, this article intercepts a small part of this complex communication system as the object of understanding and research. UWB signal is transmitted in an open channel, and the energy in the channel is lossy. When the signal arrives at the receiving end, it can be detected by the timely loss compensation. According to the actual measurement of the loss of this choice 42db preamplifier circuit to achieve this compensation process. In the design process, using SYSTEMVIEW software for signal and amplification system theory simulation, analysis of the amplified signal form. Then the electronic circuit of the amplifier is designed, and the parameter optimization and noise analysis are carried out. The results show that the circuit meets the needs of the low noise requirements.