Metal injection molding forms resonators and chamber structures with tighter tolerances, enabling smaller RF filters with lower cost and better performance.
Varying secondary resonances across adjacent cavities enables broadband stopband rejection without cascaded filters, while keeping low loss and high power handling.
A layered dielectric waveguide with a varying opening cross-section supports dense mmWave links with lower crosstalk, latency, and power use.
A suspended pressing element tunes cavity filter resonance without cover screws, simplifying assembly and reducing tuning time.
An irregular cavity and dielectric resonator balance high Q, compact size, and wider tuning range while reducing frequency sensitivity.
Planar resonator modules vary electromagnetic coupling to build lighter high-order cavity filters with simpler tuning and lower production complexity.
Through-holes between adjacent dielectric resonators cut magnetic coupling, raise harmonic frequency, and improve remote suppression.
Series resonant cavities and matching resonators suppress out-of-band leakage, removing guard bands while cutting combiner power loss.
An externally adjustable tuner in a dielectric cavity filter sets cross-coupling without disassembly, cutting material complexity and tuning time.
Upper-plate slots tune cavity resonators after fabrication to correct resonance shifts from manufacturing variation while keeping high Q and low loss.
Selective acidic etching shrinks the resonator-substrate interface, removes native oxides, and rounds edges to reduce TLS losses.
A nested dielectric block and support frame enable triple-mode resonance, cutting filter volume while preserving high Q and lowering insertion loss.
A grounded coupling plate replaces lossy spiral inductors in multilayer RF filters, creating transmission zeros on both sides of the passband.
Stacked conductors in a dielectric resonator increase signal path surface area, preserving Q factor and lowering filter insertion loss in compact designs.
LCM-built ceramic resonators use complex internal cavities to improve pass-band behavior, cut insertion loss, and enable compact RF filters.
A metal interface inside the dielectric resonator widens mode spacing and bandwidth while preserving unloaded Q and compact filter size.
A fishbone waveguide in a stepped impedance resonator cuts chip footprint while preserving resonance control and layout flexibility.