Filter structure including circuit board

Filter structure with anti-rotation keying

Filter structures for integrated circuit interfaces

Filter switching circuit having a shorter distance of...

Filter system comprising a bulk acoustic wave resonator

Filter system with bulk wave resonator having a reflection...

Filter system with controlled amplitude in stopband or passband

Filter unit

Filter unit adapted for miniaturization and for selecting a part

Filter unit for connectors having filter capacitors formed on op

Filter using enhanced quality factor resonator and method

Filter using micro-mechanical resonator

Filter using multilayer ceramic technology and structure...

Filter using piezoelectric material

Filter utilizing a coupling bar

Filter with a switch having capacitance

Filter with acoustically coupled resonators

Filter with an adjustable shunt zero

Filter with dielectric resonators

Filter with electrically adjustable attenuation characteristic