Filter device having a distributed-constant-line-type resonator

Filter device of piezo-electric type including divided co-planar

Filter device utilizing magnetostatic waves

Filter device utilizing stacked resonators and acoustic...

Filter device with balanced signal input and output terminals

Filter device, multiband filter, duplexer and communications...

Filter devices incorporating dielectric resonators and leakage c

Filter element

Filter element

Filter element

Filter element and fabrication thereof

Filter element and method for manufacturing the same

Filter elements having ferroelectric-ferromagnetic composite mat

Filter equipment for power lines

Filter for analog signals

Filter for electric signals

Filter for electric signals consisting of switches, capacitors a

Filter for existing waveguide structures

Filter for microwaves

Filter for microwaves