Advances on Exploiting Polarization in Wireless Communications: Channels, Technologies, and Applications

Polarization agile self‐oscillating active integrated antenna for spatial modulation wireless communications

“…Polarization‐agile spatially modulated communication uses polarization (space‐domain parameters); in so doing, communication is realized by switching between two orthogonal polarized waves (e.g. ±45°) according to a binary information signal . Communication using ±45° polarizations is equivalent to simultaneously transmitting horizontally and vertically polarized carrier waves, only either one being binary‐phase modulated.…”

Polarization Agile Self-Oscillating Active Integrated Antenna for Spatial Modulation Wireless Communications

“…±45 • ) according to a binary information signal. 26,27 Communication using ±45 • polarizations is equivalent to simultaneously transmitting horizontally and vertically polarized carrier waves, only either one being binary-phase modulated. Therefore, carrier components are included in the modulated waves, and no carrier recovery circuit is required on the receiving side; moreover, effects of phase noise of local oscillators can be eliminated.…”

Giant enhancement of tunable asymmetric transmission for circularly polarized waves in a double-layer graphene chiral metasurface

“…12 With the development of research on chirality with asymmetric transmission, electromagnetic devices applied for both linearly and circularly polarized waves have been designed, such as some polarization transformers, polarization analysers and polarization-controlled devices. [13][14][15][16] They are widely used to promote the evolution of optical communication and photonics. The excitation of enantiomerically sensitive surface plasmons is a collective mode of electron oscillation at the interface of conductor and medium, which is in charge of asymmetric transmission for circularly polarized waves in planar chiral metasurfaces.…”