Filter circuit for an electromagnetic pickup

Filter circuit for attenuating high frequency signals

Filter circuit for electric waves

Filter circuit having a charge transfer device

Filter circuit having an acoustic surface-wave filter device

Filter circuit having plural passing bands

Filter circuit including system for tuning resonant...

Filter circuit utilizing a surface acoustic wave filter

Filter circuit utilizing charge transfer device

Filter circuit with a filter stage and balun on a single...

Filter circuit with automatic tuning

Filter circuit with series and parallel elements

Filter circuits having transformers as filter elements

Filter combiner

Filter combining surface acoustic wave resonators

Filter comprising inductor, duplexer using the filter and...

Filter connector

Filter connector

Filter connector

Filter connector