Man pages matching name find_optimal_dimensions_for_microstrip_coupler in section 1:

find_optimal_dimensions_for_microstrip_coupler.1.en	debian 10 / atlc
find_optimal_dimensions_for_microstrip_coupler.1.en	debian 11 / atlc
find_optimal_dimensions_for_microstrip_coupler.1.en	debian 12 / atlc