Planar resonators in magnetically coupled cavity modules cut filter size and weight while easing tuning and reducing manufacturing sensitivity.
An intermediate-expansion buffer between the resonant rod and dielectric reduces welding stress, cracking risk, and tuning instability.
A small connecting arc and four-step deep drawing improve resonator accuracy, elasticity, coupling area, and Q factor while cutting cost.
Independent coaxial shafts automate RF filter screw and nut tuning, improving pass-band adjustment consistency while reducing labor dependence.
A third resonator and surrounding reference conductor extend phase control and filtering flexibility beyond single resonator limits.
Recessed substrate regions under strip conductors and grounded surfaces preserve electromagnetic coupling while shrinking filter size.
A split conductive and non-conductive tuning part improves cavity filter tuning while suppressing radiation and preserving linearity.
Laser-etched glass cores embed millimeter wave resonators and couplers to cut footprint, lower insertion loss, and raise bandwidth density.
Offset blind coupling holes enable tunable negative coupling in dielectric filters, improving out-of-band suppression without added loss.
Electromagnetically coupled Josephson resonators shrink oscillator size while preserving stable frequency and reducing coupling loss.
Offset cavity windows tune notch and skirt characteristics in a cavity-dielectric filter assembly without separate metal crossbars.
Movable dielectric tuners at both resonator ends enable compact coaxial filters with tunable frequency and bandwidth, low loss, and high power handling.
A spherical spoof-plasmon resonator boosts subwavelength scattering in all directions and polarizations while keeping frequency tunable.
Grounded resistors outside a resonant cavity improve RF combiner cooling and widen bandwidth at higher power and frequency.
Integrated groove coupling between dual-mode and single-mode resonators shrinks dielectric filters while preserving selectivity and reducing spurious issues.
Inclined inner-wall extension sections enlarge resonant cavity volume, cutting insertion loss while easing demolding and reducing filter size.
A movable bar inside overlapping resonator elements tunes cavity frequency across bands, reducing the need for multiple fixed filters.
Multimode strip line resonators combine multiple bands without a bulky common cavity, cutting 5G radio size and weight while preserving filter loss performance.