An orbital angular momentum multiplexing communication system at 28 GHz with an active uniform circular array  

作　　者：Yu GAN Lin LIU Jian BAI Hongfu MENG 

机构地区：[1]State Key Laboratory of Millimeter Waves,School of Information Science and Engineering,Southeast University,Nanjing 210096,China [2]Beijing Remote Sensing Equipment Research Institute,Beijing 100071,China

出　　处：《Frontiers of Information Technology & Electronic Engineering》2024年第12期1759-1768,共10页信息与电子工程前沿(英文版)

基　　金：Project supported by the National Natural Science Foundation of China(No.61101020)。

摘　　要：This paper presents an orbital angular momentum(OAM)multiplexing communication system employing active uniform circular arrays(UCAs)to achieve simultaneous five-mode transmission.At 28 GHz,dualloop UCAs are implemented in the transceiver,in which four UCAs comprising multiple 4×4 microstrip subarrays are placed concentrically.The next stage of each channel is an active transmitter and receiver(T/R)module,which is composed of a beamformer integrated circuit(IC)and a feed network.Additionally,a central antenna with the ability to transmit mode 0 is integrated.Similar to the active phased array system,both the receiving and transmitting modes are reconfigurable by adjusting the phase shifter.According to specific requirements,the modes of different UCAs can be assigned arbitrarily,and the receiving and transmitting states of each UCA can be configured independently.In this study,a 6-m OAM link with data transmission rate of 3 Gbit/s has been successfully implemented.

关 键 词：communication ANTENNA MOMENTUM 

分 类 号：TN914[电子电信—通信与信息系统]