Filter apparatus

Filter apparatus

Filter apparatus

Filter apparatus and method

Filter apparatus, duplexer, and communication apparatus

Filter arrangement

Filter arrangement

Filter arrangement

Filter arrangement for balanced and unbalanced line systems

Filter arrangement including a non-reversible circuit element, a

Filter array having a plurality of capacitance elements

Filter assembly

Filter assembly

Filter assembly comprising a plastic resonator support and reson

Filter assembly insertable into a substrate

Filter assembly with unbalanced to balanced conversion and...

Filter chip and filter device

Filter circuit

Filter circuit

Filter circuit