D波段是毫米波频段的一种, 其频率范围在110~170 GHz。作为一种新的频段资源, 它有着更高的载波频率, 因此可以承受更大的带宽和传输速率, 成为毫米波通信中的研究热点。本文首先对系统传输链路进行理论分析, 然后基于光生毫米波系统产生了134.4 GHz的D波段毫米波, 并考虑到实际应用中的多用户情况, 通过直接调制器和IQ调制器产生了5个频带的D波段毫米波信号, 对其传输性能进行了实验探究。验证了其传输性能和传输速率及传输距离之间的关系。

D band is a kind of millimetre wave ranging from 110 GHz to 170 GHz. As a new frequency band resource, it has higher carrier frequency which leads to wider bandwidth and higher transmission rate. For this reason, it attracts more and more focus in recent years. In this paper, the principle of transmission link is analyzed firstly. Secondly, a D-band millimetre wave is generated based on photonic beating technique. Considering the situation of multi-user in practical application, a millimetre wave signal with five bands is generated by an Intensity Modulator(IM) and a I/Q modulator. At last, some experiments are performed to explore the performance of this system and verify the relationship between Bit Error Rate(BER) performance and Baud rate/wireless distance.