Frequency Demodulator Arrangements TRIZ Cases

Dynamic sampling clock phase shifts raise ADC resolution without lowering modulator frequency, helping keep filters smaller and data rates high.

Dynamic sampling clock phase shifts raise converter resolution without lowering modulator frequency, reducing filter size and cost.

Repeated triggering and phase-varied modulation enable wideband weak-signal detection while suppressing low-frequency noise.

A single image-distortion measurement sets local oscillator duty ratio to cut transmitter impairments while reducing calibration time and circuit complexity.

A phase comparator and injection-locked oscillator cut band-pass filter power below 100 nW while improving robustness to PVT variations.

A PLL-based FM demodulator tracks phase and frequency offset in weak or poor-quality signals to preserve sensitivity and audio quality.

Using phase comparison and injection locking, this filter extracts temporally modulated signals at 1.8 nW while staying robust to PVT variation.

A frequency-offset LO enables reciprocal mixing cancellation and signal isolation without extra PLLs, cutting spurious artifacts and power use.

Analog quadrature nulling plus digital temperature-based compensation improves MEMS gyroscope SNR, dynamic range, and rate offset stability.

Training-sequence-based estimation of transmitter bias and imbalance improves phase noise compensation accuracy in coherent QAM receivers.

Wide-to-narrow IF filter switching can shift passband center frequency; this case corrects PLL oscillation to preserve reception and reduce interference.

Phase-sensitive separation of 2f measurement and f fault signals normalizes gas analyzer output and compensates for transformer-related interference.