POWER LIMITER Russian patent published in 1995 - IPC

FIELD: waveguide technology. SUBSTANCE: power limiter has section 1 of rectangular waveguide, ferrite plate 2 with matching bevels 3, magnetic system 4. Field of magnetic system is oriented perpendicular to wide walls of section 1 of rectangular waveguide. Width of ferrite plate 2 equals a₁= (0,6-1,0)A/e_F, thickness of plate is b₁≅ a₁/2, length is l > λ_f, where a is width of section 1 rectangular waveguide; E_f is dielectric permittivity of ferrite plate 2; λ_f is length of wave H₁₀ in waveguide partially occupied by ferrite. In compliance with item 2 of formula of invention width of section 1 a′ of rectangular waveguide is chosen from relationship a > a′ ≥ 2a₁. EFFECT: reduced pass losses, and threshold power, increased dynamic range and expanded band of working frequencies. 2 cl, 2 dwg