Simultaneous Amplitude And Angle Modulation TRIZ Cases

By rescaling the digital phase signal from measured intensity modulation, this case suppresses vibration bias in fiber optic gyroscopes.

Envelope-based phase and duty-cycle predistortion reduces PWM-PPM slewing distortion and preserves RF AM signal purity at high power.

Known data inserted into VSB stuff-byte positions gives receivers extra training for synchronization and equalization in multipath fading.

Combining and phase-shifting two baseband signals lets two users share one timeslot, boosting capacity while limiting co-channel interference.

A loopback calibration module corrects QAM transmitter amplitude and phase mismatch from analog mixers, improving signal accuracy with less calibration time.

Dynamic switching between differential and single-ended LNA modes improves receiver noise immunity without continuous high power draw.

A fractional DLL and compensation network generate low-noise quadrature signals with accurate duty cycles at lower power for multiband transceivers.

A 180-degree baseband phase shift handles zero crossings without forcing infinite phase-modulator bandwidth, reducing distortion.

Programmable delays, tapped delay lines, and cross-correlation align AM and PM paths in digital polar transmitters to reduce distortion.

Phase-shift encryption protects wireless symbols at the physical layer, including pilot and sync signals, to harden over-the-air links.

Output phase and envelope feedback stabilize a polar RF transmitter, simplify calibration, and improve PA integration and efficiency.

Threshold-based AM inversion folds strong FM impulses to cut peak deviation, reduce noise, and preserve polar transmit spectrum.

By slowing or disabling the amplitude path when phase modulation is sufficient, this case cuts current draw while meeting ACLR limits.

Random symbol scrambling lowers dummy-data transmit power without transmitter-receiver signaling, enabling instant power reduction.

A shared RF path combines linear and polar modulation, cutting component count and power use without PLL bandwidth limits.

A parallel correction circuit trims PWM quantization errors in a hybrid class-S modulator, improving RF efficiency and envelope accuracy.

Oversampling and delta-sigma modulation shift DAC quantization noise out of band, enabling on-chip low-pass filtering with lower power and complexity.

A periodic test signal tunes envelope and phase path delay in a polar transmitter by minimizing IQ I-signal swing, cutting ACP without spurious output.

Round-robin carrier assignment separates highly correlated encoded bits across symbols, reducing noise and interference impact.

A dual-PLL translational synthesizer balances narrow-band phase noise suppression with pulling resistance in direct-conversion transmitters.

A differential test signal measures AM-PM path delay mismatch in a split polar transmitter, preserving EVM and spectral quality.

A fully digital I/Q modulator replaces analog RF paths in deep-submicron CMOS, cutting calibration burden, noise, and integration complexity.

A mixer shifts signal phase using variable gain amplifiers with cos and sin coefficients.

A time-varying threshold in an AMR reduction circuit dynamically adjusts signal samples to lower high-frequency events and adjacent channel leakage ratios.

Weighted Gaussian pulses segment frequency signals to minimize inter-symbol interference and simplify receiver design in multi-state modulation systems.

Decomposing channel matrices at the transmitting end removes interference signals, optimizing data transfer rates and transmission power for each terminal.

A fiber optic gyroscope processing component rescales modulated digital phase signals using detected intensity modulation amplitude.

Merging square, triangular, and sine waveforms into one signal reduces testing time while measuring maximum signal dispersion.

Dynamic band setting encodes high-band spectral data based on input characteristics, reducing allophone generation and improving decoded speech quality.

A stochastic bit loading algorithm dynamically selects transmission constellations based on signal-to-noise ratio to increase data throughput.

Applying a frequency offset via a unitary pre-coding matrix spreads error symbols across carriers, improving diversity gain in fading channels.

Base station switches carrier frequency within synchronization markers to maintain frame integrity.