Cross-Talk/Noise/Interference Reduction TRIZ Cases
- Optical Module Shielding Cage for EMC Compliance
A shielding cage encloses high-speed signal lines within an optical module circuit board to contain electromagnetic radiation.
- Conductive Frame Shielding for Stacked PCB Noise
Grounded conductive frames enclose stacked PCB spaces to block noise emission, preserving antenna performance in high-frequency devices.
- Conductive Stiffener for Flexible Substrate Grounding
A nickel-gold plated stainless steel stiffener connects to a flexible printed circuit board ground via conductive epoxy.
- Carrier Material Via Segmentation for Thermal Management
Layered via structures with segmented conductive fillings balance thermal performance and manufacturing costs in carrier materials.
- Display Device Circuit Board EMI Dissipation via Conductive Structure
A circuit board with an exposed external conductive layer electrically couples to a display module's conductive portion through an intermediate structure.
- Stacked Connector Wafer Inserts for Differential Signal Crosstalk Reduction
Rotating wafer inserts reorient differential signal contacts to minimize connector width while maintaining capacitive coupling.
- Single Quad-Mode Dielectric Resonator for Dual-Band Filtering Switch
A single quad-mode dielectric resonator enables dual-band filtering switching via planar microstrip coupling.
- Signal Processing Board Noise Reduction via Six-Layer Substrate
Six-layer substrate integrates power and ground planes with bypass capacitors to secure return current paths, reducing noise in dense signal processing boards.
- Electronic Circuit Module Shielding via 3D Via Contact
A conductive film connects to exposed via conductor portions on a circuit board side surface to form a three-dimensional contact area.
- Frequency Selective Surface Shielding for Open Structures
Periodic frequency selective surfaces reduce electromagnetic interference by 30 dB while maintaining equipment access and airflow.
- Reconfigurable Dielectric Composite Substrate for Microwave Applications
Dispersed piezoelectric fillers in composite substrates enable reconfigurable dielectric properties, overcoming fixed characteristic limitations.
- Ground Wall Crosstalk Suppression in PCB Microstrip Lines
Optimized ground walls reduce far-end crosstalk in high-speed microstrip lines, enabling denser routing without signal integrity loss.
- Embedded Semiconductor PCB With Integrated Electromagnetic Shielding
Resin-insulating layers house embedded semiconductor elements while side and bottom metal layers form electromagnetic shielding to block interference.
- Chip Package Shielding Layer with Embedded Conductive Connectors
A chip package integrates a shielding layer with conductive connectors embedded in the molding compound to establish electrical grounding.
- Multi-layer Flexible Circuit Board Using PTFE Substrate
A multi-layer flexible circuit board uses a PTFE substrate to enable high-speed signal transmission while preventing copper ion migration.
- Package Substrate with Embedded Circuit and Coplanar Dielectric
Equalizing dielectric and circuit thickness eliminates excess material, reducing substrate height for higher density packaging.
- Embedded Packaging Shielding Cavity for Electromagnetic Interference
Shielding walls and grounded wiring layers enclose the device, resolving incomplete five-side protection that leaves pins vulnerable to interference.
- Rigid-Flex PCB Impedance Control via Shielding Layer
Shielding layer on flexible circuit board insulation manages differential mode signal impedance to eliminate high-frequency transmission errors.
- Plating Stub Capacitance for High-Frequency Signal Reflections
Capacitive coupling shifts plating stub resonant frequency away from operational bands in chip packages.
- PCB Capacitor Arrangement for Negative Mutual Inductance
Arranging capacitor elements to produce negative mutual inductance reduces effective inductance, suppressing radiation noise from common mode currents.
- Potted PCB Module for Aircraft PDU Moisture and Vibration Protection
A potted printed circuit board module integrates a dielectric sheet and thermally conductive backing to shield electronics within an enclosure.
- Flexible PCB Shielding via Segmented Via Walls
Segmented conductive shield walls with gaps reduce signal radiation while maintaining bending durability for high-frequency transmission.
- RF Filtering in PWB DC Distribution Layers
Embedding ferrite particles in epoxy laminate layers attenuates radio frequency energy, eliminating leakage through the direct current distribution network.
- Surface Mount Connector Pad Crosstalk Reduction
Intermediary ground pads shield adjacent signal paths, enabling high-speed trace routing on the top surface without excessive crosstalk.
- USB-C Connector Port Module With Reinforcing Via Holes
Conductive via holes in the rigid joint of a USB-C connector port module reinforce physical integrity and dissipate heat generated by high current loads.