Transmission Noise Reduction TRIZ Cases
- Active EMI Filter Current Source for High-Temperature Stability
A bias-stabilized high-frequency current source helps active EMI filters attenuate automotive noise while staying compact across wide temperatures.
- Active EMI Filter Current Source With Unipolar High-Impedance Output
A symmetric bipolar current source with active biasing enables compact active EMI filtering above 1 MHz without a bipolar supply.
- Complementary Data Streams for Power Supply Noise Reduction
By pairing a primary bit stream with inverted lower-rate streams, this case cuts supply noise and jitter without added capacitors.
- Common-LO Self-Interference Cancellation for FDD Transceivers
A common LO and auxiliary phase-noise cancellation path suppress TX leakage in FDD transceivers without high-power low-noise oscillators.
- Optical Coupling Circuit With Noise-Current Cancellation
A duplicated noise current from a shielded photodiode is subtracted before comparison, improving optical isolator signal accuracy under capacitive noise.
- Supply Line Blocking Circuit for Wideband Crosstalk Suppression
A blocking circuit on shared supply lines uses capacitance and admittance transformation to suppress wideband interference and reduce crosstalk.
- Transmit-Receive Switch Circuit for Harmonic Rejection and ESD Protection
Integrated isolation circuitry grounds second-harmonic, ESD, and noise signals to cut insertion loss and improve transceiver efficiency.
- Neural Adaptive Line Enhancement for In-Band RF Noise Suppression
A neural adaptive line enhancer de-correlates narrowband signals from noise to suppress in-band RF interference and improve audio stability.
- Nonlinear Noise Measurement Using Notch Signal Separation
Bilateral and unilateral notch signals separate nonlinear noise and IQ imbalance from additive white Gaussian noise for accurate measurement.
- Single-Ended Signal Transmission Using Return-Path Current Cancellation
See how opposing current in a return-path inductance reduces common-mode noise without adding signal conductors.
- Background Noise Recording for Ultra-Short-Range Radar Measurement
Reconfigurable filters and recorded noise help radar switch range modes and maintain accurate distance measurements across varied placement.
- External REIN Filter Coupling for Telecommunications Cable Noise
A waterproof enclosure couples a REIN filter to external distribution points using crimp connectors and shock-absorbing materials.
- High-Side Driver Reverse Current Protection Circuit
Merging separate loops into one path reduces area and power consumption while maintaining protection reliability.
- Power Supply Generator Switcher Noise Cancellation Feedback
Feedback circuit generates compensating noise signal to cancel switcher interference, reducing spurious emissions and improving power efficiency.
- Transceiving Circuit DC Bias Control via Frequency Domain Analysis
A transceiving circuit uses frequency domain analysis to generate an ideal DC bias voltage group for a mixer.
- Adjusting Switch-Mode Power Supply Frequency to Reduce Harmonic Interference
A switch-mode power supply adjusts its switching rate to shift harmonic frequencies away from the receiver band.