Ferrite/superconductor microwave device
Ferroelectric electronically tunable filters
Ferroelectric high Tc superconductor RF phase shifter
Ferroelectric RF limiter
Ferroelectric tunable coaxial filter
Filter device having independently adjustable filtering...
Filter device having spiral resonators connected by a linear...
Frequency dependent inductor apparatus and method for a...
Frequency stable resonator with temperature compensating layers