A shaped coupling aperture excites three resonant modes independently, improving CWG filter bandwidth, Q-factor, and harmonic control.
An integrated support portion and intermodulation groove replace screw fixation to stabilize the dielectric resonator and improve Q value.
A shared waveguide with common junctions and resonance blocks enables dual-band filtering while improving power handling and temperature stability.
Overlapping electrode patterns enable vertical capacitive coupling, reducing filter height while preserving frequency response and Q-factor.
A fishbone waveguide coupled through a Josephson junction shortens resonator length, reducing superconducting chip footprint without unwanted modes.
Single-layer tuning bars and resonators cut filter thickness and weight while preserving skirt characteristics and fine frequency tuning.
A single-layer resonator and tuning-bar layout enables fine frequency tuning while cutting filter thickness and weight.
Voltage-tuned liquid crystal layers vary resonator capacitance to steer radio wave refraction more flexibly than fixed lens-based designs.
Groove-separated dual- and single-mode resonators enable compact dielectric filters with capacitive coupling, high selectivity, and lower spurious signals.
Internal jacket canals bring coolant close to HF cavity surfaces, reducing hot spots, thermal stress, and frequency tuning drift.
Single-layer resonators and tuning bars replace multi-cavity coupling parts to enable frequency tuning in a slimmer, lighter RF filter.
A single-layer resonator and tuning-bar layout slims RF filters while preserving frequency tuning and skirt characteristics without extra conductive parts.
A split ring resonator with radial stubs broadens high-frequency noise rejection above 20 GHz while saving PCB space on RF lines.
Stacked dielectric layers place resonator conductor parts at different heights to shrink band-pass filter area without degrading filtering performance.
By shortening transmission lines and lengthening stubs beyond quarter wavelength, this filter improves selectivity and reduces pass-band attenuation.
Electrical switching links a conductive tuning pattern to shift resonant frequency while preserving high Q, low loss, and fast RF tuning.
Strategic main and cross coupling windows create transmission zeros that suppress high-order spurious resonance in compact dielectric filters.
A 3D coupler inside cavity filters widens bandwidth and suppresses harmonics while avoiding extra loss, volume, and group delay issues.
Metalized dielectric blocks form the septum and resonator couplings in one structure, cutting E-plane filter part count, size, weight, and cost.
Organic electrochemical transistor tuning replaces complex semiconductor integration in microwave metadevices for flexible, large-area reconfiguration.
Sheet-shaped resonant rods replace flying rods to create low-side transmission zeros with simpler cavity filter assembly and better consistency.