Experimental demonstration of a dual-channel E-band communication link using commercial impulse radios with orbital angular momentum multiplexing

In this paper, we use commercial impulse radios and spiral phase plates to generate two different orbital angular momentum (OAM) beams from 71 GHz to 76 GHz. In addition, we have experimentally demonstrated that those two different OAM beams can be multiplexed and demultiplexed over the same frequency radio channel at 2 meters range. At the same time, those two channels can work independently with channel crosstalk less than -15 dB and bit-error-rate (BER) less than 9.65 × 10
^-10
.