Continuous Tuning Details TRIZ Cases
- Inductive Link Coil De-Tuning Compensation With Shield-Coupled Tuning
An electrostatic shield with a variable inductor stabilizes inductive power and data links against parasitic detuning at fixed frequencies.
- Variable Inductor Feedback Control for Core-Safe Resonance Tuning
A sensor coil tracks core permeability so DC bias can tune inductance for resonance matching without pushing the magnetic core beyond its linear range.
- Self-Tunable Antenna Feedback for Small-Antenna Detuning
Near-field RF sensing and closed-loop tuning keep small antennas in resonance despite body proximity, improving bandwidth and radiation efficiency.
- Graphene-Metal THz Absorber Patterning for Frequency Tuning
A patterned graphene-metal bi-layer enables tunable terahertz absorption while overcoming high-frequency metal loss and fabrication limits.
- RFID Resonant Circuit Tuning for Longer-Range Tag Reading
Adjustable capacitance and inductance tuning boosts RFID reader transmission power, extending tag reading distance and improving interference resistance.
- Varactor-Tuned Input Harmonic Trap for Broadband RF Amplifiers
A varactor and inductor tune the input harmonic trap electronically, preserving linear gain, phase, and efficiency across broadband RF operation.
- RF Modulation Layout Using a Separate Choke for DC Isolation
A separate RF choke between the modulation element and control circuit preserves DC bias isolation while shrinking RF element size and cost.
- Oscillator IC Temperature Compensation Using Local Basis Functions
Local basis functions in an oscillator IC improve temperature compensation precision while reducing calibration time, size, and oven cost.
- Envelope Tracking Tuning with Sequential Setting Search
Sequential search of ET algorithm, tracker, and power amplifier settings cuts tuning time while preserving envelope tracking performance.
- Wireless Parametric Resonator for Cable-Free Multi-Modal Brain Imaging
An RF-pumped parametric resonator wirelessly amplifies and transmits MRI and neuronal signals, reducing cable heating and design complexity.
- RFID Resonant Circuit Matching for Extended Passive Tag Read Range
Adjustable capacitance and inductance match RFID resonance to extend passive tag read range and reduce idle power through shutdown control.
- Resonant Tank AFSC Circuit for CMOS Process Frequency Drift
Series CRTMOM capacitors and varactors compensate resonant tank frequency drift from CMOS process variation while preserving gain consistency.
- Digitally Tunable Capacitor Using Positive Logic RF Biasing
Positive logic biasing replaces negative voltage generation in a digitally tunable capacitor, improving RF linearity, switching speed, and power use.
- Active Steering Torque Phase Control for Nibble Cancellation
A phase-shifted motor torque cancels steering nibble from wheel imbalance, reducing steering wheel vibration across wheel speeds.
- Variable Local Coil Matrix for MRI Anatomy Fit and Decoupling
Detachable MRI coil segments reconfigure to fit different anatomies while preserving resonance and electrical consistency for better image quality.
- Clocked RF Frequency Detection for On-Chip Auto-Tuning
A clocked frequency detector enables tunable RF circuits to self-tune on chip, cutting external support blocks, size, and integration cost.
- Microwave Circuit Digital Set-Point Calibration for Yield Tuning
On-chip measurement and stored digital calibration data replace manual bias tuning, preserving microwave circuit specs while improving yield.
- Resonator Frequency Stabilization Using Dual-Drive Correlation
Two drive frequencies within the resonance linewidth separate frequency fluctuations from additive noise, enabling resonator stabilization.
- Peak Current Evaluation Using Pulse Stress and Resistance Shift
Pulse width and duty tuning stress an IC test structure, then resistance change is used to calculate peak current in scaled devices.