WAVE-GUIDE FILTER ON BASE OF DIELECTRIC THE BRAGG STRUCTURE FOR MILLIMETER WAVES APPLICATIONS

It is considered and offered the waveguide band elimination filter wit h the working mode Hi,, that can be used in millimeter waves devices s uch as up, down- converters, mixer, etc. The characteristics of the fi lter was calculated by using analogy in electromagnetic the waveguide propagation and optical the wave propagation in the medium with the sp ecific refractive index (N) over cap. This conception can be applied f or party-filled waveguide in the case when the Brillouin decomposition of the waveguide waves into plane waves is correct and the transforma tion of the incident (propagating) mode into other the mode types is a bsent. In this work were calculated the spectrum energy transmittance T(f) in the filter stop band and the wavelength lambda(0) in the cente r of this band using the characteristic equation obtained in the resul t of theoretical consideration. Theoretical results are compared with experimental measurements.