A 100-110-GHz band path-length modulator

To show the feasibility of a path-length modulator in the highest frequency band of a waveguide transmission system, two models have been successfully constructed and tested in the 100-110-GHz range. Combined with the results previously obtained in the 50-60-GHz range, the above results indicate that the path-length modulator can be built satisfactorily anywhere in the entire frequency band of the waveguide transmission system presently under consideration.