Angle Modulation Details TRIZ Cases
- Tunable Oscillator Reactance Sharing for Gain Switching Stability
Shared varactor banks switch tuning gain while keeping effective reactance constant, cutting calibration time without frequency shifts.
- Digital Microphone Signal Switching to Eliminate Audio Popping
A virtual signal path and delayed power-off keep unstable digital microphone switching signals from reaching the codec and causing audio popping.
- Pre-Emphasis PAM Driver With High-Pass Equalizer Paths
Parallel equalizer paths with capacitive high-pass filtering speed multi-level signal transitions and reduce inter-symbol interference.
- Chopped Integrator Modulator for Charge Injection Error Reduction
By resetting a common node during chopping transitions, this modulator cuts charge injection, offset voltage, and flicker noise in current sensors.
- Shared NIC Hardware Clock for Multi-Host Time Synchronization
A single NIC hardware clock serves multiple hosts through controller-selected discipline, cutting PTP cost and overhead while keeping time accurate.
- Power-On Reset Circuit with Coupled Reference Voltage Startup
Temporary coupling of the reference node to the supply node stabilizes startup voltage comparison and prevents premature reset release.
- PAM4 Pre-Emphasis Driver With Equalizer Paths for Faster Transitions
Parallel equalizer paths with AC filtering boost high-frequency signal edges, speeding PAM4 transitions and reducing inter-symbol interference.
- Tunable Oscillator Reactance Switching for Stable Frequency Calibration
Shared unit reactance switching changes tuning gain while holding oscillator frequency steady, enabling faster, more accurate calibration.
- Gate Driving Circuit With Selective Pull-Up for Threshold Shift Compensation
Selective pull-up switching compensates threshold voltage shifts in gate drivers, keeping display gate signals stable over time.
- Radar Transmission Unit Resolution Analysis Using Simulated Echoes
Simulated echo processing and Fourier analysis reveal radar transmission unit resolution and accuracy from beat-frequency spectral properties.
- FSK Modulation Index Switching for Accurate Frequency Correction
A smaller preamble modulation index keeps FSK packets within the channelization filter passband for accurate frequency correction under large offsets.
- Sine-Cosine PWM Modulator for Constant Frequency Audio Output
A sine-cosine PWM stage keeps natural frequency constant while pushing modulation near 100% and limiting audio distortion.
- Ka-Band Multi-Chip Modulator With Direct High-Frequency Modulation
Direct Ka-band modulation removes mixer and local oscillator stages, cutting power, circuit complexity, signal spurs, and package size.
- Capacitive Sensing ADC Modulation for Low-Cost High Resolution
Triangular or saw-tooth ADC modulation lets capacitive sensing achieve higher resolution from a low-cost converter without large passive components.
- PLL Radar Chirp Generation With Loop Gain Calibration
Calibration keeps PLL loop gain stable during FMCW chirps, improving radar transmitter signal robustness across frequency and ambient changes.
- Millimeter-Wave Modulation with Constant Envelope PA Efficiency
Constant-envelope millimeter-wave modulation cuts PAPR so power amplifiers run efficiently while supporting high-speed, noise-resistant transmission.
- RF Diffractive Element With Sub-Wavelength Beam Steering
Sub-wavelength writable RF patterns boost diffraction efficiency and beam steering while cutting surface reflection losses.
- Tunable Impedance Switching With Low Distortion and Low On-Resistance
Series-connected switch transistors and drive impedance networks cut on/off-state distortion in tunable impedance circuits while preserving low resistance.
- RFID Carrier Phase Modulation for Stable Power and Clock Recovery
By limiting and spreading symbol phase jumps, this RFID scheme preserves remote power, clock recovery, and emission compliance at higher data rates.
- Sine-Cosine PWM Modulator With Stable Frequency at High Modulation
A dual comparator-integrator PWM scheme keeps natural frequency stable at nearly 100% modulation while minimizing distortion.
- RFID Carrier Phase Modulation for High Bit Rates and Stable Power Feed
By spreading each symbol phase jump over early carrier cycles, this case raises RFID bit rate while limiting spurious modulation and preserving power feed.
- Clock Frequency Modulation for EMI Reduction Across Isolation Barriers
Deterministic clock modulation spreads spectral energy to cut EMI while preserving synchronization for data transfer across an isolation barrier.