Figure 8
From: Multiplexed Millimeter Wave Communication with Dual Orbital Angular Momentum (OAM) Mode Antennas
The output signals from the l = +3 port of the receiving antenna measured by a spectrum analyzer. The blue solid line is the receiving signal intensity when the signal is launched into the l = +3 port of the transmitting antenna and the red dash line is that when the signal launched into the l = –3 port. fc = 60 GHz, fs = 20 kHz.
