Waveguide frequency-band/polarization splitter

Polarized-wave splitter, which comprises at least the following components:

• a common waveguide having a cross section suitable for letting at least two different polarizations propagate, the common waveguide having first and second ends, the first end constituting a common input/output;
• a first slot placed at the second end of the common waveguide, the first slot letting waves propagate with a first polarization;
• a second slot placed on a lateral part of the common waveguide, the second slot letting waves propagate with a second polarization;
• a first transition region providing a change in waveguide cross section;
• a second transition region providing a change in waveguide cross section;
• a first waveguide filter having a first end connected to the first slot via the first transition region, and a second end constituting a first individual input/output;
• and
• a second waveguide filter having a first end connected to the second slot via the second transition region, and a second end constituting a second individual input/output;
• wherein the overall dimensions of the various components are such that the transfer characteristics of the splitter, within a transmit band and within a receive band, measured, on the one hand, between the common input/output and the first individual input/output and, on the other hand, between the common input/output and the second individual input/output, are better than the characteristics resulting from the sum of the characteristics of the components constituting the splitter, within the said bands.