Ferroelectric-tunable microwave branching couplers

Film bulk acoustic resonator filter and duplexer

Film bulk acoustic resonator, filter, communication module...

Film carrier signal transmission line having separating grooves

Filter and antenna duplexer

Filter and duplexer

Filter and duplexer

Filter apparatus with circulator for use in radio apparatus tran

Filter assembly and communication apparatus

Filter assembly comprising two bulk wave resonators

Filter bank

Filter circuit and transmitter and receiver using the same

Filter combiner

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

Filter device for transmitter-receiver antenna

Filter device substrate and filter device

Filter element, and filter device, duplexer, and...

Filter having directional coupler and communication device

Filter having resonators coupled by a saw filter and a duplex fi

Filter having switch function and band pass filter