Thank you. For the record, circular polarization is tied to the wavelength (I hadn’t noticed that before for some reason). Also, if I understand it right, you can superpose many (more than two) different elliptically or linearly polarized signals with different axes, but you can’t separate them.
No. Circular polarization allows exactly two channels per frequency, just like linear polarization.
Thank you. For the record, circular polarization is tied to the wavelength (I hadn’t noticed that before for some reason). Also, if I understand it right, you can superpose many (more than two) different elliptically or linearly polarized signals with different axes, but you can’t separate them.