Multi-Band Filters TRIZ Cases
- Lamb Wave Filter Layout With Floating Electrodes for Band-Edge Rejection
Floating center electrodes create a band gap in a Lamb wave filter, sharpening band-edge rejection without adding signal delay.
- Dual-Sided SAW Filter Layout for Compact Multi-Band RF Filtering
SAW resonators on both sides of one substrate enable multi-band RF filtering in a single chip, cutting package size and part count.
- Dual-Sided SAW Filter Packaging for Multi-Band Chip Miniaturization
A dual-sided SAW filter chip uses through electrodes and shared packaging to support multiple frequency bands with fewer parts and better yield.
- Multi-Band Acoustic Filter Circuit With Shared Blocking Attenuation
Shared attenuation in a multi-band filter circuit eases single-band rejection demands, cutting filter complexity while improving band isolation.
- Stacked Piezoelectric BAW Resonators for High-Frequency Stability
Alternating-polarity piezoelectric stacks using ALD and sputtering raise BAW resonant frequency while preserving stability and power handling.
- ALD Piezoelectric BAW Stack With Polarization Inversion for 40 GHz
Stacked piezoelectric layers with ALD polarization inversion raise BAW resonant frequency while preserving stability and power handling.
- BAW Piezoelectric Stack Using ALD for High-Frequency Stability
Stacked oppositely polarized piezoelectric layers formed by ALD and sputtering help BAW resonators reach high frequency with better stability and power handling.
- Acoustic Wave Filter Wiring Layout for Low-Leakage Signal Routing
A grounded conductor beneath low-permittivity insulation suppresses wiring capacitive coupling and preserves insertion loss in compact acoustic wave filters.
- SAW Ladder Filter with Additional Resonator for Thermal Load Relief
An added resonator before the SAW ladder filter diverts heat and electrical load, protecting the initial resonator and stabilizing filter characteristics.
- Coplanar IDT Acoustic Wave Filter With Local Thickness Tuning
Coplanar IDT electrodes and locally varied piezoelectric thickness simplify multi-band filter fabrication while preserving electrode uniformity.
- Combined Passband Acoustic Filter for Wideband Steep Roll-Off
Parallel BAW or SAW band-pass filters create a combined passband that widens bandwidth while preserving steep roll-off and filtering quality.
- Elastic Wave Reflector Regions for Dual-Filter Insertion Loss
Frequency-tuned reflector regions return signals to the correct filter, reducing energy dissipation and insertion loss at common outputs.
- Acoustic Wave Filter Signal Layout for Lower Shared-Terminal Loss
A 3D inclined signal-line crossover suppresses leakage between shared filter parts, improving insertion loss and VSWR.