Filter for existing waveguide structures

Filter for microwaves

Filter for microwaves

Filter for microwaves

Filter for short electromagnetic waves formed as a comb line or

Filter for very short electromagnetic waves

Filter having a dielectric resonator

Filter having a dielectric resonator

Filter having an electromagnetically tunable transmission zero

Filter having elements with distributed constants which associat

Filter having part of a resonator and integral shell extruded fr

Filter of the type consisting of a primary waveguide having late

Filter structure including circuit board

Filter structures for integrated circuit interfaces

Filter unit

Filter utilizing a coupling bar

Filter with an adjustable shunt zero

Filter with dielectric resonators

Filter with electrically adjustable attenuation characteristic

Filter with improved capacitive coupling portion