Plane type strip-line filter in which strip line is shortened an

Plane type strip-line filter in which strip line is shortened an

Plane type strip-line filter in which strip line is...

Pluricavities microwave filter having cavities oriented in a saw

Point detect filter

Polar dielectric filter and dielectric duplexer incorporating sa

Polarity reversal network

Preselector filter with tunable narrowband excision

Printed bandpass filter for a double conversion tuner

Printed circuit board filter having rows of vias defining a...

Printed circuit board helical resonator and filter apparatus

Printed wiring board assembly with self-compensating ground...

Pseudo-elliptical filter for the millimeter band using waveguide