Filter including a microstrip antenna and a frequency selective

Filter including acoustic wave filters connected in parallel

Filter module using piezoelectric resonators, duplexer,...

Filter structure and arrangement comprising piezoelectric...

Filter structure comprising piezoelectric resonators

Filter unit having two attenuation poles

Filter using film bulk acoustic resonator and...

Filter using piezoelectric resonator

Filter with low-noise amplifier

Filter, antenna sharing device, and communication device

Filter, duplexer, and communication device

Filter, duplexer, and communication device

Filter, duplexer, and communication device

Filter, duplexer, and communications device

Filter, multiplexer, and communication apparatus

Filtering device comprising filters, each having a resonance...

Filtering device for high-voltage power lines used as high-frequ

Filtering type frequency switching circuit

Filters and duplexers utilizing thin film stacked crystal filter

Five port waveguide switch