Methods and apparatus to reduce distortion between electromagnetic wave transmissions

A method, comprising:

• receiving, by a first waveguide system, first electromagnetic waves that propagate along a physical transmission medium without requiring an electrical return path, wherein the first electromagnetic waves convey first signals in a first frequency range and second signals in a second frequency range, and wherein a first spectral location of the first frequency range exceeds a second spectral location of the second frequency range;
• reducing signal distortion by:
• frequency converting, by the first waveguide system, the first signals in the first frequency range to a first updated frequency range;
• frequency converting, by the first waveguide system, the second signals in the second frequency range to a second updated frequency range;
• and
• generating, by the first waveguide system, second electromagnetic waves that propagate along the physical transmission medium without requiring an electrical return path, wherein the second electromagnetic waves convey the first signals in the first updated frequency range and the second signals in the second updated frequency range.

A non-transitory machine-readable medium, comprising executable instructions that, when executed by a processing system of a first waveguide system that includes a processor, facilitate performance of operations, the operations comprising:

• receiving first electromagnetic waves that propagate along a physical transmission medium without requiring an electrical return path, wherein the first electromagnetic waves conveys first signals in a first frequency range and second signals in a second frequency range, and wherein a first spectral location of the first frequency range exceeds a second spectral location of the second frequency range;
• frequency converting the first signals in the first frequency range to a first updated frequency range;
• frequency converting the second signals in the second frequency range to a second updated frequency range;
• and
• generating second electromagnetic waves that propagate along the physical transmission medium without requiring an electrical return path, wherein the second electromagnetic waves convey the first signals in the first updated frequency range and the second signals in the second updated frequency range.