TE10-Mode Filters Formed by Multilayered Dielectric Slabs in Waveguides Below Cutoff

A new type of dielectric resonator filter is being introduced, utilizing longitudinal multilayered dielectric slabs rather than transverse dielectric plates. The length of each slab coincides with the length of the filter enclosure. Ladder-shaped metal inserts are sandwiched between the dielectric slabs determining the resonator and coupling sections. The metal insert dimensions can be fabricated very accurately using low-cost photolithographic techniques. Compared with conventional TE10-mode dielectric resonator filters the new design shows also improved filter performance.